cmsis_rtos_threadx
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Outline
#include <string.h>
#include "cmsis_os2.h"
#include "cmsis_compiler.h"
#include "tx_api.h"
#include "tx_initialize.h"
#include "tx_thread.h"
#include "tx_timer.h"
#include "tx_byte_pool.h"
#include "tx_event_flags.h"
#include "tx_mutex.h"
#include "tx_semaphore.h"
#include "tx_queue.h"
#define KERNEL_ID
#define IS_IRQ_MODE
#define RTOS2_DEFAULT_THREAD_STACK_SIZE
#define RTOS2_INTERNAL_BYTE_POOL_SIZE
#define RTOS2_BYTE_POOL_STACK_SIZE
#define RTOS2_BYTE_POOL_HEAP_SIZE
#define RTOS2_DEFAULT_TIME_SLICE
#define RTOS2_BYTE_POOL_STACK_TYPE
#define RTOS2_BYTE_POOL_HEAP_TYPE
KernelState
HeapBytePool
StackBytePool
-------------------CMSIS RTOS2 Internal Functions
MemAlloc(uint32_t, uint8_t)
MemFree(void *)
MemInit()
---------------------------Kenel Management APIs
osKernelInitialize()
osKernelGetInfo(osVersion_t *, char *, uint32_t)
osKernelGetState()
osKernelStart()
osKernelGetTickCount()
osKernelGetTickFreq()
osKernelGetSysTimerCount()
osKernelGetSysTimerFreq()
-----------------------------Generic Wait APIs
osDelay(uint32_t)
osDelayUntil(uint32_t)
--------------------------Thread Management APIs
osThreadNew(osThreadFunc_t, void *, const osThreadAttr_t *)
osThreadGetName(osThreadId_t)
osThreadGetId()
osThreadGetState(osThreadId_t)
osThreadGetStackSize(osThreadId_t)
osThreadGetStackSpace(osThreadId_t)
osThreadSetPriority(osThreadId_t, osPriority_t)
osThreadGetPriority(osThreadId_t)
osThreadYield()
osThreadSuspend(osThreadId_t)
osThreadResume(osThreadId_t)
osThreadExit()
osThreadTerminate(osThreadId_t)
osThreadDetach(osThreadId_t)
osThreadJoin(osThreadId_t)
osThreadGetCount()
osThreadEnumerate(osThreadId_t *, uint32_t)
---------------------------Timer Management APIs
osTimerNew(osTimerFunc_t, osTimerType_t, void *, const osTimerAttr_t *)
osTimerGetName(osTimerId_t)
osTimerIsRunning(osTimerId_t)
osTimerStop(osTimerId_t)
osTimerStart(osTimerId_t, uint32_t)
osTimerDelete(osTimerId_t)
-----------------------------Event flags APIs
osEventFlagsNew(const osEventFlagsAttr_t *)
osEventFlagsGetName(osEventFlagsId_t)
osEventFlagsSet(osEventFlagsId_t, uint32_t)
osEventFlagsClear(osEventFlagsId_t, uint32_t)
osEventFlagsGet(osEventFlagsId_t)
osEventFlagsWait(osEventFlagsId_t, uint32_t, uint32_t, uint32_t)
osEventFlagsDelete(osEventFlagsId_t)
---------------------------Mutex Management APIs
osMutexNew(const osMutexAttr_t *)
osMutexGetName(osMutexId_t)
osMutexAcquire(osMutexId_t, uint32_t)
osMutexRelease(osMutexId_t)
osMutexGetOwner(osMutexId_t)
osMutexDelete(osMutexId_t)
------------------------------Semaphores APIs
osSemaphoreNew(uint32_t, uint32_t, const osSemaphoreAttr_t *)
osSemaphoreGetName(osSemaphoreId_t)
osSemaphoreAcquire(osSemaphoreId_t, uint32_t)
osSemaphoreRelease(osSemaphoreId_t)
osSemaphoreDelete(osSemaphoreId_t)
------------------------------Message Queue APIs
osMessageQueueNew(uint32_t, uint32_t, const osMessageQueueAttr_t *)
osMessageQueueGetName(osMessageQueueId_t)
osMessageQueueGetCapacity(osMessageQueueId_t)
osMessageQueueGetMsgSize(osMessageQueueId_t)
osMessageQueueGetCount(osMessageQueueId_t)
osMessageQueueGetSpace(osMessageQueueId_t)
osMessageQueueReset(osMessageQueueId_t)
osMessageQueueDelete(osMessageQueueId_t)
osMessageQueuePut(osMessageQueueId_t, const void *, uint8_t, uint32_t)
osMessageQueueGet(osMessageQueueId_t, void *, uint8_t *, uint32_t)
------------------------tx_application_define API
tx_application_define(void *)
Files
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SourceVuSTM32 Libraries and Samplescmsis_rtos_threadxcmsis_os2.c
 
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/** ****************************************************************************** * @file cmsis_os2.c * @author MCD Application Team * @brief CMSIS RTOS2 wrapper for AzureRTOS ThreadX ****************************************************************************** * @attention * * Copyright (c) 2020 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** *//* ... */ /** * Important note * -------------- * This file is the implementation of functions to wrap CMSIS RTOS2 onto * AzureRTOS ThreadX based on API published by Arm Limited in cmsis_os2.h. * The implementation of these functions is inspired from an original work from * Arm Limited to wrap CMSIS RTOS2 onto FreeRTOS (see copyright and license * information below). * The whole contents of this file is a creation by STMicroelectronics licensed * to you under the License as specified above. However, some functions * originally created by Arm Limited have not been strongly reworked by * STMicroelectronics and are still available under their Apache License, * Version 2.0 original terms; these original functions are: * - osKernelGetInfo * - osKernelStart * - osKernelGetTickCount * - osKernelGetTickFreq * - osKernelGetSysTimerFreq * - osDelay * - osDelayUntil * - osThreadGetId * - osTimerIsRunning *//* ... */ /* -------------------------------------------------------------------------- * Copyright (c) 2013-2019 Arm Limited. All rights reserved. * * SPDX-License-Identifier: Apache-2.0 * * Licensed under the Apache License, Version 2.0 (the License); you may * not use this file except in compliance with the License. * You may obtain a copy of the License at * * www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an AS IS BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Name: cmsis_os2.c * Purpose: CMSIS RTOS2 wrapper for AzureRTOS ThreadX * *---------------------------------------------------------------------------*//* ... */ #include <string.h> /* ::CMSIS:RTOS2 */ #include "cmsis_os2.h" /* CMSIS compiler specific defines */ #include "cmsis_compiler.h" #include "tx_api.h" #include "tx_initialize.h" #include "tx_thread.h" #include "tx_timer.h" #include "tx_byte_pool.h" #include "tx_event_flags.h" #include "tx_mutex.h" #include "tx_semaphore.h" #include "tx_queue.h" 12 includes /*---------------------------------------------------------------------------*/ /* Kernel version and identification string definition (major.minor.rev: mmnnnrrrr dec) */ #define KERNEL_VERSION (((uint32_t)THREADX_MAJOR_VERSION * 10000000UL) + \ ((uint32_t)THREADX_MINOR_VERSION * 10000UL) + \ ((uint32_t)THREADX_PATCH_VERSION * 1UL))... #define KERNEL_ID ("AzureRTOS ThreadX") #define IS_IRQ_MODE() (__get_IPSR() != 0U) /* Default thread stack size */ #define RTOS2_DEFAULT_THREAD_STACK_SIZE 1024 /* Default thread stack size */ #define RTOS2_INTERNAL_BYTE_POOL_SIZE 256 5 defines /* Default stack byte pool memory size */ #ifndef RTOS2_BYTE_POOL_STACK_SIZE #define RTOS2_BYTE_POOL_STACK_SIZE 3 * 1024 #endif /* Default stack byte pool memory size */ #ifndef RTOS2_BYTE_POOL_HEAP_SIZE #define RTOS2_BYTE_POOL_HEAP_SIZE 4 * 1024 #endif /* Default time slice for the created threads */ #ifndef RTOS2_DEFAULT_TIME_SLICE #define RTOS2_DEFAULT_TIME_SLICE 4 #endif /* Default stack byte pool memory type */ #define RTOS2_BYTE_POOL_STACK_TYPE 1 /* Default stack byte pool memory type */ #define RTOS2_BYTE_POOL_HEAP_TYPE 2 #ifndef TX_THREAD_USER_EXTENSION #error "CMSIS RTOS ThreadX Wrapper: TX_THREAD_USER_EXTENSION must be defined as tx_thread_detached_joinable (ULONG) in tx_user.h file" #endif #ifdef TX_DISABLE_ERROR_CHECKING #error "CMSIS RTOS ThreadX Wrapper : TX_DISABLE_ERROR_CHECKING must be undefined" #endif /* Ensure the maximum number of priorities is modified by the user to 64. */ #if(TX_MAX_PRIORITIES != 64) #error "CMSIS RTOS ThreadX Wrapper: TX_MAX_PRIORITIES must be fixed to 64 in tx_user.h file" #endif /*---------------------------------------------------------------------------*/ static osKernelState_t KernelState = osKernelInactive; extern uint32_t SystemCoreClock; TX_BYTE_POOL HeapBytePool; TX_BYTE_POOL StackBytePool; /*---------------------------------------------------------------------------*/ /*-------------------CMSIS RTOS2 Internal Functions--------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function MemAlloc allocates thread, timer, mutex, semaphore, * event flags and message queue block object memory. * Or it allocates the thread or message queue stack memory. * @param [in] memory size to be allocated from BytePool * [in] to be allocated memory type (Heap or Stack) * @retval pointer to the allocated memory or NULL in case of error. *//* ... */ static uint8_t *MemAlloc(uint32_t mem_size, uint8_t pool_type) { /* The output pointer to the allocated memory or NULL in case of error */ uint8_t *mem_ptr; /* Allocated memory size */ uint32_t allocated_mem_size = mem_size; /* Pointer to the BytePool to be used for memory allocation */ TX_BYTE_POOL *byte_pool; /* Check if the memory size is invalid or the BytePool type is wrong */ if ((mem_size == 0) || (pool_type > RTOS2_BYTE_POOL_HEAP_TYPE)) { /* Return NULL in case of error */ mem_ptr = NULL; }if ((mem_size == 0) || (pool_type > RTOS2_BYTE_POOL_HEAP_TYPE)) { ... } else { /* If the memory size the be allocated is less then the TX_BYTE_POOL_MIN */ if (allocated_mem_size < TX_BYTE_POOL_MIN) { /* We should at least allocate TX_BYTE_POOL_MIN */ allocated_mem_size = TX_BYTE_POOL_MIN; }if (allocated_mem_size < TX_BYTE_POOL_MIN) { ... } /* Assign the BytePool to be used (StackBytePool or HeapBytePool) */ if (pool_type == RTOS2_BYTE_POOL_STACK_TYPE) { /* Point to the Stack BytePool */ byte_pool = &StackBytePool; }if (pool_type == RTOS2_BYTE_POOL_STACK_TYPE) { ... } else { /* Point to the Heap BytePool */ byte_pool = &HeapBytePool; }else { ... } /* Allocate the mem_ptr */ if (tx_byte_allocate(byte_pool, (void **) &mem_ptr, allocated_mem_size, TX_NO_WAIT) != TX_SUCCESS) { /* Return NULL in case of error */ mem_ptr = NULL; }if (tx_byte_allocate(byte_pool, (void **) &mem_ptr, allocated_mem_size, TX_NO_WAIT) != TX_SUCCESS) { ... } }else { ... } return (mem_ptr); }{ ... } /** * @brief The function MemFree allocates thread, timer, mutex, semaphore, * event flags and message queue block object memory. * Or it allocates the thread or message queue stack memory. * @param [in] memory size to be allocated from BytePool * [in] to be allocated memory type (Heap or Stack) * @retval pointer to the allocated memory or NULL in case of error. *//* ... */ static osStatus_t MemFree(VOID *memory_ptr) { /* The output status code that indicates the execution status */ osStatus_t status = osOK; /* Check if the memory_ptr is invalid */ if (memory_ptr == NULL) { /* Return osError in case of error */ status = osError; }if (memory_ptr == NULL) { ... } else { /* Free the allocated memory_ptr */ if (tx_byte_release(memory_ptr) != TX_SUCCESS) { /* Return osError in case of error */ status = osError; }if (tx_byte_release(memory_ptr) != TX_SUCCESS) { ... } }else { ... } return (status); }{ ... } /** * @brief The function MemInit creates memory pools for stack and heap. * The stack pool is used for threads and queues stacks allocations. * The heap pool is used for threads, timers, mutex, semaphores, * message queues and events flags control block object memory allocations. * The size of stack and heap pools are user configured using the * RTOS2_BYTE_POOL_STACK_SIZE and RTOS2_BYTE_POOL_HEAP_SIZE flags. * @param none. * @retval status code that indicates the execution status of the function. *//* ... */ static osStatus_t MemInit(void) { /* Allocated memory size */ uint32_t bytepool_size = RTOS2_BYTE_POOL_STACK_SIZE; /* Unused memory address */ CHAR *unused_memory = NULL; /* If the memory size the be allocated is less then the TX_BYTE_POOL_MIN */ if (bytepool_size < TX_BYTE_POOL_MIN) { /* We should at least allocate TX_BYTE_POOL_MIN */ bytepool_size = TX_BYTE_POOL_MIN; }if (bytepool_size < TX_BYTE_POOL_MIN) { ... } /* Initialize the Heap BytePool address */ unused_memory = (CHAR *)_tx_initialize_unused_memory; /* Create a byte memory pool from which to allocate the timer control block *//* ... */ if (tx_byte_pool_create(&StackBytePool, "Byte Pool Stack", unused_memory, RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size) != TX_SUCCESS) { /* Return osError in case of error */ return (osError); }if (tx_byte_pool_create(&StackBytePool, "Byte Pool Stack", unused_memory, RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size) != TX_SUCCESS) { ... } else { /* Set the tx_initialize_unused_memory address */ unused_memory += RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size; }else { ... } /* Set bytepool_size to the user configured Heap size */ bytepool_size = RTOS2_BYTE_POOL_HEAP_SIZE; /* If the memory size the be allocated is less then the TX_BYTE_POOL_MIN */ if (bytepool_size < TX_BYTE_POOL_MIN) { /* We should at least allocate TX_BYTE_POOL_MIN */ bytepool_size = TX_BYTE_POOL_MIN; }if (bytepool_size < TX_BYTE_POOL_MIN) { ... } /* Create a byte memory pool from which to allocate the timer control block *//* ... */ if (tx_byte_pool_create(&HeapBytePool, "Byte Pool Heap", unused_memory, RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size) != TX_SUCCESS) { /* Return osError in case of error */ return (osError); }if (tx_byte_pool_create(&HeapBytePool, "Byte Pool Heap", unused_memory, RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size) != TX_SUCCESS) { ... } else { /* Set the tx_initialize_unused_memory address */ unused_memory += RTOS2_INTERNAL_BYTE_POOL_SIZE + bytepool_size; }else { ... } /* Update the _tx_initialize_unused_memory */ _tx_initialize_unused_memory = unused_memory; return (osOK); }{ ... } /*---------------------------------------------------------------------------*/-------------------CMSIS RTOS2 Internal Functions /*---------------------------Kenel Management APIs---------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osKernelInitialize initializes the RTOS Kernel. Before * it is successfully executed, only the functions osKernelGetInfo and * osKernelGetState may be called. * Note : This function cannot be called from Interrupt Service * Routines. * @param none * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osKernelInitialize(void) { /* The output status code that indicates the execution status */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR in case of error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } else { /* Check if the kernel state is osKernelInactive */ if (KernelState == osKernelInactive) { /* Initialize the kernel */ _tx_initialize_kernel_setup(); /* Initialize the Heap and stack memory BytePools */ if (MemInit() == osOK) { /* Set the kernel state to osKernelReady */ KernelState = osKernelReady; /* Return osOK in case of success */ status = osOK; }if (MemInit() == osOK) { ... } else { /* Return osError in case of error */ status = osError; }else { ... } }if (KernelState == osKernelInactive) { ... } else { /* Return osError in case of error */ status = osError; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osKernelGetInfo retrieves the API and kernel version * of the underlying RTOS kernel and a human readable identifier string * for the kernel. It can be safely called before the RTOS is * initialized or started (call to osKernelInitialize or osKernelStart) * Note : This function may be called from Interrupt Service * Routines. * @param [out] version pointer to buffer for retrieving version information. * [out] id_buf pointer to buffer for retrieving kernel identification * string. * [in] id_size size of buffer for kernel identification string. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osKernelGetInfo(osVersion_t *version, char *id_buf, uint32_t id_size) { /* The output status code that indicates the execution status */ osStatus_t status = osOK; /* Check if input version pointer is not NULL */ if (version != NULL) { /* Version encoding is major.minor.rev: mmnnnrrrr dec */ version->api = KERNEL_VERSION; version->kernel = KERNEL_VERSION; }if (version != NULL) { ... } else { /* Return osError in case of error */ status = osError; }else { ... } /* Check if input id_buf pointer is not NULL and id_size != 0 */ if ((id_buf != NULL) && (id_size != 0U)) { if (id_size > sizeof(KERNEL_ID)) { id_size = sizeof(KERNEL_ID); }if (id_size > sizeof(KERNEL_ID)) { ... } memcpy(id_buf, KERNEL_ID, id_size); }if ((id_buf != NULL) && (id_size != 0U)) { ... } else { /* Return osError in case of error */ status = osError; }else { ... } return (status); }{ ... } /** * @brief The function osKernelGetState returns the current state of the * kernel and can be safely called before the RTOS is initialized or * started (call to osKernelInitialize or osKernelStart). In case it * fails it will return osKernelError, otherwise it returns the kernel * state (refer to osKernelState_t for the list of kernel states). * Note : This function may be called from Interrupt Service * Routines. * @param none * @retval current RTOS Kernel state. *//* ... */ osKernelState_t osKernelGetState(void) { return (KernelState); }{ ... } /** * @brief The function osKernelStart starts the RTOS kernel and begins thread * switching. It will not return to its calling function in case of * success. Before it is successfully executed, only the functions * osKernelGetInfo, osKernelGetState, and object creation functions * (osXxxNew) may be called. * Note : This function cannot be called from Interrupt Service * Routines. * @param none * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osKernelStart(void) { /* The output status code that indicates the execution status */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR in case of error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } else { /* Check if the kernel state is osKernelReady */ if (KernelState == osKernelReady) { /* Set the kernel state to osKernelRunning */ KernelState = osKernelRunning; /* Return osOK in case of success */ status = osOK; /* Start the Kernel */ tx_kernel_enter(); }if (KernelState == osKernelReady) { ... } else { /* Return osError in case of error */ status = osError; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osKernelGetTickCount returns the current RTOS kernel * tick count. * Note : This function may be called from Interrupt Service * Routines. * @param none * @retval RTOS kernel current tick count. *//* ... */ uint32_t osKernelGetTickCount(void) { /* The output RTOS kernel current tick count */ uint32_t ticks; /* Get the RTOS kernel current tick count */ ticks = (uint32_t)tx_time_get(); return (ticks); }{ ... } /** * @brief The function osKernelGetTickFreq returns the frequency of the * current RTOS kernel tick. * Note : This function may be called from Interrupt Service * Routines. * @param none * @retval frequency of the kernel tick in hertz, i.e. kernel ticks per second. *//* ... */ uint32_t osKernelGetTickFreq(void) { return (TX_TIMER_TICKS_PER_SECOND); }{ ... } /** * @brief The function osKernelGetSysTimerCount returns the current RTOS * kernel system timer as a 32-bit value. The value is a rolling 32-bit * counter that is composed of the kernel system interrupt timer value * and the counter that counts these interrupts (RTOS kernel ticks). * This function allows the implementation of very short timeout checks * below the RTOS tick granularity. Such checks might be required when * checking for a busy status in a device or peripheral initialization * routine, see code example below. * Note : This function may be called from Interrupt Service * Routines. * @param none * @retval RTOS kernel current system timer count as 32-bit value. *//* ... */ uint32_t osKernelGetSysTimerCount(void) { /* The RTOS kernel current tick count */ uint32_t ticks; /* The output RTOS kernel current system timer count as 32-bit value */ uint32_t val; /* Get the RTOS kernel current tick count */ ticks = (uint32_t)tx_time_get(); /* Compute the RTOS kernel current system timer count */ val = (uint32_t)(ticks * (SystemCoreClock / TX_TIMER_TICKS_PER_SECOND)); return (val); }{ ... } /** * @brief The function osKernelGetSysTimerFreq returns the frequency of the * current RTOS kernel system timer. * Note : This function may be called from Interrupt Service * Routines. * @param none * @retval frequency of the system timer in hertz, i.e. timer ticks per second. *//* ... */ uint32_t osKernelGetSysTimerFreq(void) { return (SystemCoreClock); }{ ... } /*---------------------------------------------------------------------------*/---------------------------Kenel Management APIs /*-----------------------------Generic Wait APIs-----------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osDelay waits for a time period specified in kernel * ticks. For a value of 1 the system waits until the next timer tick * occurs. The actual time delay may be up to one timer tick less than * specified, i.e. calling osDelay(1) right before the next system tick * occurs the thread is rescheduled immediately. * The delayed thread is put into the BLOCKED state and a context * switch occurs immediately. The thread is automatically put back to * the READY state after the given amount of ticks has elapsed. If the * thread will have the highest priority in READY state it will being * scheduled immediately. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ticks time ticks value * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osDelay(uint32_t ticks) { /* The output status code that indicates the execution status */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR in case of error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } else { /* Return osOK in case of success */ status = osOK; /* Check that the input ticks != 0 */ if (ticks != 0U) { /* Sleep the thread */ tx_thread_sleep(ticks); }if (ticks != 0U) { ... } }else { ... } return (status); }{ ... } /** * @brief The function osDelayUntil waits until an absolute time (specified * in kernel ticks) is reached. * The corner case when the kernel tick counter overflows is handled by * osDelayUntil. Thus it is absolutely legal to provide a value which * is lower than the current tick value, i.e. returned by * osKernelGetTickCount. Typically as a user you do not have to take * care about the overflow. The only limitation you have to have in * mind is that the maximum delay is limited to (231)-1 ticks. * The delayed thread is put into the BLOCKED state and a context * switch occurs immediately. The thread is automatically put back to * the READY state when the given time is reached. If the thread will * have the highest priority in READY state it will being scheduled * immediately. * @param [in] ticks absolute time in ticks * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osDelayUntil(uint32_t ticks) { uint32_t tcnt, delay; /* The output status code that indicates the execution status */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR in case of error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } else { /* Return osOK in case of success */ status = osOK; /* Return osOK in case of success */ tcnt = (uint32_t)tx_time_get(); /* Determine remaining number of ticks to delay */ delay = ticks - tcnt; /* Check if target tick has not expired */ if ((delay != 0U) && (0 == (delay >> (8 * sizeof(uint32_t) - 1)))) { /* Sleep the thread */ tx_thread_sleep(delay); }if ((delay != 0U) && (0 == (delay >> (8 * sizeof(uint32_t) - 1)))) { ... } else { /* No delay or already expired */ status = osErrorParameter; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/-----------------------------Generic Wait APIs /*--------------------------Thread Management APIs---------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osThreadNew starts a thread function by adding it to * the list of active threads and sets it to state READY. Arguments for * the thread function are passed using the parameter pointer * *argument. When the priority of the created thread function is * higher than the current RUNNING thread, the created thread function * starts instantly and becomes the new RUNNING thread. Thread * attributes are defined with the parameter pointer attr. Attributes * include settings for thread priority, stack size, or memory * allocation. * The function can be safely called before the RTOS is started * (call to osKernelStart), but not before it is initialized (call to * osKernelInitialize). * The function osThreadNew returns the pointer to the thread object * identifier or NULL in case of an error. * Note : This function Cannot be called from Interrupt Service * Routines. * @param [in] func thread function. * [in] argument pointer that is passed to the thread function as * start argument. * [in] attr thread attributes; NULL: default values. * @retval thread ID for reference by other functions or NULL in case of error. *//* ... */ osThreadId_t osThreadNew(osThreadFunc_t func, void *argument, const osThreadAttr_t *attr) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = NULL; /* Pointer to the thread name */ CHAR *name_ptr = NULL; /* Pointer to start address of the thread stack */ VOID *stack_start; /* The thread stack size */ ULONG stack_size; /* The thread control block size */ ULONG cb_size; /* The thread priority */ UINT priority; /* The thread entry input */ ULONG entry_input = 0; /* Check if this API is called from Interrupt Service Routines or the thread_id is NULL *//* ... */ if (!IS_IRQ_MODE() && (func != NULL)) { /* Initialize the name_ptr to NULL */ name_ptr = NULL; /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the thread name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check the input priority value and attribute bits for osThreadJoinable parameter *//* ... */ if ((attr->priority < osPriorityIdle) || (attr->priority > osPriorityISR)) { /* Return NULL pointer in case of error */ return (NULL); }if ((attr->priority < osPriorityIdle) || (attr->priority > osPriorityISR)) { ... } else { /* Set the thread priority */ priority = osPriorityISR - attr->priority; }else { ... } /* Check if the argument is not NULL */ if (argument != NULL) { /* Set the entry_input */ entry_input = (ULONG) argument; }if (argument != NULL) { ... } /* Check if the stack size is equal to 0 */ if (attr->stack_size == 0U) { /* Set stack size to DEFAULT_THREAD_STACK_SIZE */ stack_size = RTOS2_DEFAULT_THREAD_STACK_SIZE; }if (attr->stack_size == 0U) { ... } else if (attr->stack_size < TX_BYTE_POOL_MIN) { /* Set stack size to TX_BYTE_POOL_MIN */ stack_size = TX_BYTE_POOL_MIN; }else if (attr->stack_size < TX_BYTE_POOL_MIN) { ... } else { /* Set stack size to attr->stack_size */ stack_size = (ULONG)attr->stack_size; }else { ... } /* Check if the input stack pointer is NULL */ if (attr->stack_mem == NULL) { /* Allocate the stack for the thread to be created */ stack_start = MemAlloc(stack_size, RTOS2_BYTE_POOL_STACK_TYPE); if (stack_start == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (stack_start == NULL) { ... } }if (attr->stack_mem == NULL) { ... } else { if (attr->stack_size == 0U) { /* Return NULL pointer in case of error */ return (NULL); }if (attr->stack_size == 0U) { ... } else { /* Set stack size to the input attr->stack_size */ stack_size = (ULONG)attr->stack_size; }else { ... } /* The stack shall point to the input stack memory address */ stack_start = attr->stack_mem; }else { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_THREAD) */ cb_size = sizeof(TX_THREAD); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_THREAD)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_THREAD)) { ... } else { /* Set stack size to attr->cb_size */ cb_size = (ULONG)attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the thread_ptr structure for the thread to be created */ thread_ptr = (TX_THREAD *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (thread_ptr == NULL) { /* Check if the memory for thread stack has been internally allocated *//* ... */ if (attr->stack_mem == NULL) { /* Free the already allocated memory for thread stack */ MemFree(stack_start); }if (attr->stack_mem == NULL) { ... } /* Return NULL pointer in case of error */ return (NULL); }if (thread_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ thread_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Set the thread priority to default osPriorityNormal*/ priority = osPriorityISR - osPriorityNormal; /* Initialize the name_ptr to NULL */ name_ptr = NULL; /* Initialize the stack_size to RTOS2_DEFAULT_THREAD_STACK_SIZE */ stack_size = RTOS2_DEFAULT_THREAD_STACK_SIZE; /* Check if the argument is not NULL */ if (argument != NULL) { /* Set the entry_input */ entry_input = (ULONG) argument; }if (argument != NULL) { ... } /* Allocate the stack for the thread to be created */ stack_start = MemAlloc(stack_size, RTOS2_BYTE_POOL_STACK_TYPE); if (stack_start == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (stack_start == NULL) { ... } /* Allocate the thread_ptr structure for the thread to be created */ thread_ptr = (TX_THREAD *)MemAlloc(sizeof(TX_THREAD), RTOS2_BYTE_POOL_HEAP_TYPE); if (thread_ptr == NULL) { /* Free the already allocated memory for thread stack */ MemFree(stack_start); /* Return NULL pointer in case of error */ return (NULL); }if (thread_ptr == NULL) { ... } }else { ... } /* Call the tx_thread_create function to create the new thread. Note: By default the preempt_threshold shall be deactivated by setting its value to the priority or deactivated using TX_DISABLE_PREEMPTION_THRESHOLD *//* ... */ if (tx_thread_create(thread_ptr, name_ptr, (void(*)(ULONG))func, entry_input, stack_start, stack_size, priority, priority, RTOS2_DEFAULT_TIME_SLICE, TX_AUTO_START) != TX_SUCCESS) { /* Check if the memory for thread control block has been internally allocated *//* ... */ if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for thread control block */ MemFree(thread_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } /* Check if the memory for thread stack has been internally allocated */ if ((attr->stack_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for thread stack */ MemFree(stack_start); }if ((attr->stack_mem == NULL) || (attr == NULL)) { ... } /* Return NULL pointer in case of error */ thread_ptr = NULL; }if (tx_thread_create(thread_ptr, name_ptr, (void(*)(ULONG))func, entry_input, stack_start, stack_size, priority, priority, RTOS2_DEFAULT_TIME_SLICE, TX_AUTO_START) != TX_SUCCESS) { ... } else { /* Check if the thread shall be created joinable */ if ((attr != NULL) && (attr->attr_bits == osThreadJoinable)) { /* Set the thread to Joinable state */ thread_ptr->tx_thread_detached_joinable = osThreadJoinable; }if ((attr != NULL) && (attr->attr_bits == osThreadJoinable)) { ... } else { /* Set the thread to Detached state */ thread_ptr->tx_thread_detached_joinable = osThreadDetached; }else { ... } }else { ... } }if (!IS_IRQ_MODE() && (func != NULL)) { ... } return ((osThreadId_t)thread_ptr); }{ ... } /** * @brief The function osThreadGetName returns the pointer to the name_ptr * string of the thread identified by parameter thread_id or NULL in * case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId * @retval name_ptr as null-terminated string. *//* ... */ const char *osThreadGetName(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr = NULL; /* Check if this API is called from Interrupt Service Routines, the thread_id is NULL or thread_id->tx_thread_id != TX_THREAD_ID *//* ... */ if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Call the tx_thread_info_get to get the thread name_ptr */ if (tx_thread_info_get(thread_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_thread_info_get(thread_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (name_ptr); }{ ... } /** * @brief The function osThreadGetId returns the thread object ID of the * currently running thread or NULL in case of an error. * Note : This function may be called from Interrupt Service Routines. * @param none * @retval thread ID for reference by other functions or NULL in case of error. *//* ... */ osThreadId_t osThreadGetId(void) { /* For ThreadX the control block pointer is the thread identifier */ osThreadId_t thread_id; /* Call the tx_thread_identify to get the control block pointer of the currently executing thread. *//* ... */ thread_id = (osThreadId_t)tx_thread_identify(); return (thread_id); }{ ... } /** * @brief The function osThreadGetState returns the state of the thread * identified by parameter thread_id. In case it fails or if it is * called from an ISR, it will return osThreadError, otherwise it * returns the thread state (refer to osThreadState_t for the list of * thread states). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId * @retval state current thread state of the specified thread. *//* ... */ osThreadState_t osThreadGetState(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The control block pointer of the current running thread */ TX_THREAD *current_thread = NULL; /* The current thread state of the specified thread. */ osThreadState_t state; /* The current thread state of the specified thread as specified by threadx */ UINT threadx_state; /* Check if this API is called from Interrupt Service Routines, the thread_id is NULL or thread_id->tx_thread_id != TX_THREAD_ID *//* ... */ if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) /* Return osThreadError in case of an error */ { state = osThreadError; ...} else { /* Get the current running thread */ TX_THREAD_GET_CURRENT(current_thread); if (current_thread == thread_id) { /* The state is running */ state = osThreadRunning; }if (current_thread == thread_id) { ... } else { /* Call the tx_thread_info_get to get the thread threadx_state */ if (tx_thread_info_get(thread_ptr, NULL, &threadx_state, NULL, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return osThreadError in case of an error */ state = osThreadError; }if (tx_thread_info_get(thread_ptr, NULL, &threadx_state, NULL, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } else { /* Link the ThreadX thread states to CMSIS RTOS2 states */ switch (threadx_state) { /* The thread is in READY state */ case TX_READY: { state = osThreadReady; break; ...} /* The thread is in COMPLETED state */case TX_READY: case TX_COMPLETED: { state = osThreadTerminated; break; ...} /* The thread is in TERMINATED state */case TX_COMPLETED: case TX_TERMINATED: { state = osThreadTerminated; break; ...} /* The thread is in SUSPENDED state */case TX_TERMINATED: case TX_SUSPENDED: case TX_QUEUE_SUSP: case TX_SEMAPHORE_SUSP: case TX_EVENT_FLAG: case TX_BLOCK_MEMORY: case TX_BYTE_MEMORY: case TX_IO_DRIVER: case TX_FILE: case TX_TCP_IP: case TX_MUTEX_SUSP: case TX_PRIORITY_CHANGE: { state = osThreadBlocked; break; ...} /* The thread is in SLEEP state */case TX_PRIORITY_CHANGE: case TX_SLEEP: { state = osThreadBlocked; break; ...} /* The thread is in unknown state */case TX_SLEEP: default: { state = osThreadError; break; ...}default }switch (threadx_state) { ... } }else { ... } }else { ... } }else { ... } return (state); }{ ... } /** * @brief The function osThreadGetStackSize returns the stack size of the * thread specified by parameter thread_id. In case of an error, it * returns 0. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval remaining_stack_space remaining stack space in bytes. *//* ... */ uint32_t osThreadGetStackSize(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The specific thread stack size in bytes */ unsigned int stack_size; /* Check if this API is called from Interrupt Service Routines, the thread_id is NULL or thread_id->tx_thread_id != TX_THREAD_ID *//* ... */ if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return 0 in case of error */ stack_size = 0U; }if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* The stack_size get the allocated thread stack size in the thread creation step */ stack_size = thread_ptr->tx_thread_stack_size; }else { ... } return (stack_size); }{ ... } /** * @brief The function osThreadGetStackSpace returns the size of unused stack * space for the thread specified by parameter thread_id. Stack * watermark recording during execution needs to be enabled (refer to * Thread Configuration). In case of an error, it returns 0. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval remaining_stack_space remaining stack space in bytes. *//* ... */ uint32_t osThreadGetStackSpace(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* Remaining stack space in bytes */ uint32_t remaining_stack_space; /* Check if this API is called from Interrupt Service Routines, the thread_id is NULL or thread_id->tx_thread_id != TX_THREAD_ID *//* ... */ if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return 0 in case of error */ remaining_stack_space = 0U; }if (IS_IRQ_MODE() || (thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Compute the remaining free stack size for the given thread */ remaining_stack_space = (unsigned int)((CHAR *)thread_ptr->tx_thread_stack_ptr - (CHAR *)thread_ptr->tx_thread_stack_start); }else { ... } return (remaining_stack_space); }{ ... } /** * @brief The function osThreadSetPriority changes the priority of an active * thread specified by the parameter thread_id to the priority * specified by the parameter priority. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * [in] priority new priority value for the thread function. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadSetPriority(osThreadId_t thread_id, osPriority_t priority) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* Old priority */ UINT old_priority; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if thread_ptr is NULL or thread_id->tx_thread_id != TX_THREAD_ID or the input priority is out of range *//* ... */ else if ((thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID) || (priority < osPriorityIdle) || (priority > osPriorityISR)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_ptr == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID) || (priority < osPriorityIdle) || (priority > osPriorityISR)) { ... } else { /* Convert input CMSIS osPriority_t to threadX priority */ priority = (osPriority_t)(osPriorityISR - priority); /* Call the tx_thread_priority_change to change the thread priority */ if (tx_thread_priority_change(thread_ptr, priority, &old_priority) == TX_SUCCESS) { /* Return osOK in case of success */ status = osOK; }if (tx_thread_priority_change(thread_ptr, priority, &old_priority) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osThreadGetPriority returns the priority of an active * thread specified by the parameter thread_id. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval priority current priority value of the specified thread. *//* ... */ osPriority_t osThreadGetPriority(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The returned thread priority or error */ osPriority_t priority; /* Check if this API is called from Interrupt Service Routines or the thread_id is NULL *//* ... */ if (IS_IRQ_MODE() || (thread_ptr == NULL)) { /* Return osPriorityError in case of an error */ priority = osPriorityError; }if (IS_IRQ_MODE() || (thread_ptr == NULL)) { ... } else { /* Call the tx_thread_info_get to get the thread priority */ if (tx_thread_info_get(thread_ptr, NULL, NULL, NULL, (UINT *)&priority, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return osPriorityError in case of an error */ priority = osPriorityError; }if (tx_thread_info_get(thread_ptr, NULL, NULL, NULL, (UINT *)&priority, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } else { /* Convert the threadX priority to CMSIS osPriority_t */ priority = (osPriority_t)(osPriorityISR - priority); }else { ... } }else { ... } return (priority); }{ ... } /** * @brief The function osThreadYield passes control to the next thread with * the same priority that is in the READY state. If there is no other * thread with the same priority in state READY, then the current * thread continues execution and no thread switch occurs. * osThreadYield does not set the thread to state BLOCKED. Thus no * thread with a lower priority will be scheduled even if threads in * state READY are available. * Note : This function cannot be called from Interrupt Service * Routines. * @param none. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadYield(void) { /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } else { /* Call the tx_thread_relinquish to relinquishes processor control to other ready-to-run threads at the same or higher priority. *//* ... */ tx_thread_relinquish(); /* Return osOK for success */ status = osOK; }else { ... } return (status); }{ ... } /** * @brief The function osThreadSuspend suspends the execution of the thread * identified by parameter thread_id. The thread is put into the * BLOCKED state (osThreadBlocked). Suspending the running thread will * cause a context switch to another thread in READY state immediately. * The suspended thread is not executed until explicitly resumed with * the function osThreadResume. * Threads that are already BLOCKED are removed from any wait list and * become ready when they are resumed. Thus it is not recommended to * suspend an already blocked thread. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadSuspend(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the thread ID is NULL or (tx_thread_id != TX_THREAD_ID) */ else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Call the tx_thread_suspend to suspends the specified application thread. A thread may call this service to suspend itself. *//* ... */ if (tx_thread_suspend(thread_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_thread_suspend(thread_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osThreadResume puts the thread identified by parameter * thread_id (which has to be in BLOCKED state) back to the READY * state. If the resumed thread has a higher priority than the running * thread a context switch occurs immediately. * The thread becomes ready regardless of the reason why the thread was * blocked. Thus it is not recommended to resume a thread not suspended * by osThreadSuspend. * Functions that will put a thread into BLOCKED state are: * osEventFlagsWait and osThreadFlagsWait, osDelay and osDelayUntil, * osMutexAcquire and osSemaphoreAcquire, osMessageQueueGet, * osMemoryPoolAlloc, osThreadJoin, osThreadSuspend.. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadResume(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the thread ID is NULL or (tx_thread_id != TX_THREAD_ID) */ else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Call the tx_thread_resume to resumes or prepares for execution a thread that was previously suspended by a tx_thread_suspend call. In addition, this service resumes threads that were created without an automatic start. *//* ... */ if (tx_thread_resume(thread_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_thread_resume(thread_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osThreadExit terminates the calling thread. This allows * the thread to be synchronized with osThreadJoin. * Note : This function cannot be called from Interrupt Service * Routines. * @param none. * @retval none. *//* ... */ __NO_RETURN void osThreadExit(void) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = NULL; /* Check if this API is called from Interrupt Service Routines */ if (!IS_IRQ_MODE()) { /* Call the tx_thread_identify to get the control block pointer of the currently executing thread. *//* ... */ thread_ptr = tx_thread_identify(); /* Check if the current running thread pointer is not NULL */ if (thread_ptr != NULL) { /* Call the tx_thread_terminate to terminates the specified application thread regardless of whether the thread is suspended or not. A thread may call this service to terminate itself. *//* ... */ tx_thread_terminate(thread_ptr); }if (thread_ptr != NULL) { ... } }if (!IS_IRQ_MODE()) { ... } /* Infinite loop */ for (;;); }{ ... } /** * @brief The function osThreadTerminate removes the thread specified by * parameter thread_id from the list of active threads. If the * thread is currently RUNNING, the thread terminates and the * execution continues with the next READY thread. If no such thread * exists, the function will not terminate the running thread, but * return osErrorResource. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadTerminate(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the thread ID is NULL or (tx_thread_id != TX_THREAD_ID) */ else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Call the tx_thread_terminate to terminates the specified application thread regardless of whether the thread is suspended or not. A thread may call this service to terminate itself. *//* ... */ if (tx_thread_terminate(thread_ptr) == TX_SUCCESS) { /* Free the thread resources if it is Detached */ if (thread_ptr->tx_thread_detached_joinable == osThreadDetached) { /* Delete the thread */ tx_thread_delete(thread_ptr); /* Free the already allocated memory for thread stack */ MemFree(thread_ptr->tx_thread_stack_start); /* Free the already allocated memory for thread control block */ MemFree(thread_ptr); }if (thread_ptr->tx_thread_detached_joinable == osThreadDetached) { ... } /* Return osOK for success */ status = osOK; }if (tx_thread_terminate(thread_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osThreadDetach changes the attribute of a thread * (specified by thread_id) to osThreadDetached. Detached threads are * not joinable with osThreadJoin. When a detached thread is * terminated, all resources are returned to the system. The behavior * of osThreadDetach on an already detached thread is undefined. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadDetach(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the thread ID is NULL or (tx_thread_id != TX_THREAD_ID) */ else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Change the status of the specific thread to Detached */ thread_ptr->tx_thread_detached_joinable = osThreadDetached; /* Return osOK for success */ status = osOK; }else { ... } return (status); }{ ... } /** * @brief The function osThreadJoin waits for the thread specified by * thread_id to terminate. If that thread has already terminated, then * osThreadJoin returns immediately. The thread must be joinable. * By default threads are created with the attribute osThreadDetached. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] thread_id thread ID obtained by osThreadNew or osThreadGetId. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osThreadJoin(osThreadId_t thread_id) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = (TX_THREAD *)thread_id; /* The control block pointer of the current running thread */ TX_THREAD *current_thread = NULL; /* The current thread state of the specified thread as specified by threadx */ UINT threadx_state; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the thread ID is NULL or (tx_thread_id != TX_THREAD_ID) */ else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((thread_id == NULL) || (thread_ptr->tx_thread_id != TX_THREAD_ID)) { ... } else { /* Get the current running thread */ TX_THREAD_GET_CURRENT(current_thread); if (current_thread == thread_id) { /* Return osErrorParameter error */ status = osErrorParameter; }if (current_thread == thread_id) { ... } else { /* Call the tx_thread_info_get to get the thread threadx_state */ if (tx_thread_info_get(thread_ptr, NULL, &threadx_state, NULL, NULL, NULL, NULL, NULL, NULL) == TX_SUCCESS) { /* Check if the thread is joinable */ if (thread_ptr->tx_thread_detached_joinable == osThreadJoinable) { /* Only one thread can Join a thread in the same time so we will detach it momentally until it will be terminated *//* ... */ thread_ptr->tx_thread_detached_joinable = osThreadDetached; /* Wait until the state of the specific thread turn to terminated */ while ((threadx_state != TX_TERMINATED) && (threadx_state != TX_COMPLETED)) { /* Call the tx_thread_info_get to get the thread threadx_state */ tx_thread_info_get(thread_ptr, NULL, &threadx_state, NULL, NULL, NULL, NULL, NULL, NULL); }while ((threadx_state != TX_TERMINATED) && (threadx_state != TX_COMPLETED)) { ... } /* Once the thread is terminated it can be again Joinable */ thread_ptr->tx_thread_detached_joinable = osThreadJoinable; /* Return osOK for success */ status = osOK; }if (thread_ptr->tx_thread_detached_joinable == osThreadJoinable) { ... } else { /* Return osErrorResource error */ status = osErrorResource; }else { ... } }if (tx_thread_info_get(thread_ptr, NULL, &threadx_state, NULL, NULL, NULL, NULL, NULL, NULL) == TX_SUCCESS) { ... } else { /* Return osErrorResource error */ status = osErrorResource; }else { ... } }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osThreadGetCount returns the number of active threads * or 0 in case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param none. * @retval count number of active threads. *//* ... */ uint32_t osThreadGetCount(void) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = NULL; /* Returned number of active threads */ unsigned int count = 0U; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return 0 in case of error */ count = 0; }if (IS_IRQ_MODE()) { ... } else { /* thread_ptr = the head pointer of the created thread list */ thread_ptr = _tx_thread_created_ptr; /* Compute the number of active threads */ while (thread_ptr != NULL) { /* Check the next thread validity */ if (thread_ptr->tx_thread_id == TX_THREAD_ID) { /* Increment the number of active threads */ count++; /* Check the state of next created thread */ if ((thread_ptr->tx_thread_created_next != thread_ptr) && (thread_ptr->tx_thread_created_next != _tx_thread_created_ptr)) { thread_ptr = thread_ptr->tx_thread_created_next; }if ((thread_ptr->tx_thread_created_next != thread_ptr) && (thread_ptr->tx_thread_created_next != _tx_thread_created_ptr)) { ... } else { break; }else { ... } }if (thread_ptr->tx_thread_id == TX_THREAD_ID) { ... } else { /* Return 0 in case of error */ count = 0; break; }else { ... } }while (thread_ptr != NULL) { ... } }else { ... } return (count); }{ ... } /** * @brief The function osThreadEnumerate returns the number of enumerated * threads or 0 in case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [out] thread_array pointer to array for retrieving thread IDs. * [in] array_items maximum number of items in array for retrieving * thread IDs. * @retval count number of enumerated threads. *//* ... */ uint32_t osThreadEnumerate(osThreadId_t *thread_array, uint32_t array_items) { /* For ThreadX the control block pointer is the thread identifier */ TX_THREAD *thread_ptr = NULL; /* The number of enumerated threads */ uint32_t count = 0U; /* Check if this API is called from Interrupt Service Routines or if the thread_array is NULL or the array_items is equal to 0 *//* ... */ if (IS_IRQ_MODE() || (thread_array == NULL) || (array_items == 0U)) { /* Return 0 in case of error */ count = 0U; }if (IS_IRQ_MODE() || (thread_array == NULL) || (array_items == 0U)) { ... } else { /* thread_ptr point to the head pointer of the created thread list */ thread_ptr = _tx_thread_created_ptr; /* Compute the number of active threads */ while ((thread_ptr != NULL) && (count < array_items)) { /* Check the next thread validity */ if (thread_ptr->tx_thread_id == TX_THREAD_ID) { /* Retrieve the thread IDs and increment the number of active threads *//* ... */ thread_array[count++] = thread_ptr; /* Check the state of next created thread */ if ((thread_ptr->tx_thread_created_next != thread_ptr) && (thread_ptr->tx_thread_created_next != _tx_thread_created_ptr)) { thread_ptr = thread_ptr->tx_thread_created_next; }if ((thread_ptr->tx_thread_created_next != thread_ptr) && (thread_ptr->tx_thread_created_next != _tx_thread_created_ptr)) { ... } else { break; }else { ... } }if (thread_ptr->tx_thread_id == TX_THREAD_ID) { ... } else { /* Return 0 in case of error */ count = 0; break; }else { ... } }while ((thread_ptr != NULL) && (count < array_items)) { ... } }else { ... } return (count); }{ ... } /*---------------------------------------------------------------------------*/--------------------------Thread Management APIs /*---------------------------Timer Management APIs---------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osTimerNew creates an one-shot or periodic timer and * associates it with a callback function with argument. The timer is * in stopped state until it is started with osTimerStart. * The function can be safely called before the RTOS is started (call * to osKernelStart), but not before it is initialized (call to * osKernelInitialize). * The function osTimerNew returns the pointer to the timer object * identifier or NULL in case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] func function pointer to callback function. * [in] type osTimerOnce for one-shot or osTimerPeriodic for periodic * behavior. * [in] argument argument to the timer callback function. * [in] attr timer attributes; NULL: default values. * @retval timer ID for reference by other functions or NULL in case of error. *//* ... */ osTimerId_t osTimerNew(osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = NULL; /* The name_ptr as null-terminated string */ CHAR *name_ptr = NULL; /* The timer expiration input */ ULONG expiration_input = 0U; /* The timer reschedule ticks */ ULONG reschedule_ticks = 0U; /* The size of control block */ ULONG cb_size = sizeof(TX_TIMER); /* Check if this API is called from Interrupt Service Routines, the timer callback function handler is NULL or the type is not valid *//* ... */ if (!IS_IRQ_MODE() && (func != NULL) && (type <= osTimerPeriodic)) { /* Initialize the name_ptr to NULL */ name_ptr = NULL; /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the timer name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_TIMER) */ cb_size = sizeof(TX_TIMER); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_TIMER)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_TIMER)) { ... } else { /* Set control block size to attr->cb_size */ cb_size = (ULONG) attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the timer_ptr structure for the timer to be created */ timer_ptr = (TX_TIMER *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (timer_ptr == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (timer_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ timer_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Allocate the timer_ptr structure for the timer to be created */ timer_ptr = (TX_TIMER *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); }else { ... } /* Check the timer type to set timer periodicity */ if (type == osTimerPeriodic) { /* Specifies the number of ticks for all timer expirations after the first. A zero for this parameter makes the timer a one-shot timer. Otherwise, for periodic timers, legal values range from 1 through 0xFFFFFFFF. For periodic timer the reschedule_ticks is initiated to 1 then set to ticks given as input in osTimerStart APIs *//* ... */ reschedule_ticks = 1; }if (type == osTimerPeriodic) { ... } /* Check if the argument is not NULL */ if (argument != NULL) { /* Set the expiration_input */ expiration_input = (ULONG)argument; }if (argument != NULL) { ... } /* Call the tx_timer_create function to create the new timer */ if (tx_timer_create(timer_ptr, name_ptr, (void(*)(ULONG))func, expiration_input, 1, reschedule_ticks, TX_NO_ACTIVATE) != TX_SUCCESS) { /* Check if the memory for timer control block has been internally allocated *//* ... */ if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for timer control block */ MemFree(timer_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } /* Return NULL pointer in case of error */ timer_ptr = NULL; }if (tx_timer_create(timer_ptr, name_ptr, (void(*)(ULONG))func, expiration_input, 1, reschedule_ticks, TX_NO_ACTIVATE) != TX_SUCCESS) { ... } }if (!IS_IRQ_MODE() && (func != NULL) && (type <= osTimerPeriodic)) { ... } return ((osThreadId_t)timer_ptr); }{ ... } /** * @brief The function osTimerGetName returns the pointer to the name string * of the timer identified by parameter timer_id or NULL in case of an * error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] timer_id timer ID obtained by osTimerNew. * @retval name as null-terminated string. *//* ... */ const char *osTimerGetName(osTimerId_t timer_id) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = (TX_TIMER *)timer_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr; /* Check if this API is called from Interrupt Service Routines or the timer_id is NULL *//* ... */ if (IS_IRQ_MODE() || (timer_ptr == NULL)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (timer_ptr == NULL)) { ... } else { /* Call the tx_timer_info_get to get the timer name_ptr */ if (tx_timer_info_get(timer_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_timer_info_get(timer_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return ((const char *)name_ptr); }{ ... } /** * @brief The function osTimerIsRunning checks whether a timer specified by * parameter timer_id is running. It returns 1 if the timer is running * and 0 if the timer is stopped or an error occurred. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] timer_id timer ID obtained by osTimerNew. * @retval 0 not running, 1 running. *//* ... */ uint32_t osTimerIsRunning(osTimerId_t timer_id) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = (TX_TIMER *)timer_id; /* The active state of the timer */ UINT active; /* Check if this API is called from Interrupt Service Routines or the input timer_id in NULL *//* ... */ if (IS_IRQ_MODE() || (timer_id == NULL)) { /* Return 0 in case of error */ active = 0U; }if (IS_IRQ_MODE() || (timer_id == NULL)) { ... } else { /* Check if the timer is valid by calling the tx_timer_info_get to get the timer active state *//* ... */ if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, NULL, NULL) != TX_SUCCESS) { /* Return 0 in case of error */ active = 0U; }if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return ((uint32_t)active); }{ ... } /** * @brief The function osTimerStop stops a timer specified by the parameter * timer_id. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] timer_id timer ID obtained by osTimerNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osTimerStop(osTimerId_t timer_id) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = (TX_TIMER *)timer_id; /* The returned status or error */ osStatus_t status; /* The active state of the timer */ UINT active; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the timer control block is valid */ else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { ... } else { /* Get the timer running state */ if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, NULL, NULL) == TX_SUCCESS) { /* Check if the timer is running (active) */ if (active == TX_TRUE) { /* Call the tx_timer_deactivate to deactivates the specified application timer. If the timer is already deactivated, this service has no effect. *//* ... */ if (tx_timer_deactivate(timer_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_timer_deactivate(timer_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (active == TX_TRUE) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, NULL, NULL) == TX_SUCCESS) { ... } else { /* Return osErrorResource error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osTimerStart starts or restarts a timer specified by * the parameter timer_id. The parameter ticks specifies the value of * the timer in time ticks. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] timer_id timer ID obtained by osTimerNew. * [in] ticks time ticks value of the timer. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osTimerStart(osTimerId_t timer_id, uint32_t ticks) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = (TX_TIMER *)timer_id; /* The returned status or error */ osStatus_t status = osOK; /* The active state of the timer */ UINT active; /* The reschedule ticks of the timer */ ULONG reschedule_ticks; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the timer control block is valid */ else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { ... } else { /* Get the timer running state and reschedule ticks parameters */ if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, &reschedule_ticks, NULL) == TX_SUCCESS) { /* Check if the timer is active. If so, it shall be stopped before being activated again *//* ... */ if (active == TX_TRUE) { /* Call the tx_timer_deactivate to deactivates the specified application timer. If the timer is already deactivated, this service has no effect. *//* ... */ if (tx_timer_deactivate(timer_ptr) == TX_SUCCESS) { /* Set status osOK for success */ status = osOK; }if (tx_timer_deactivate(timer_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (active == TX_TRUE) { ... } if (status == osOK) { /* Check the timer reschedule_ticks parameter for periodicity */ if (reschedule_ticks > 0) { /* Set the reschedule_ticks to the input ticks */ reschedule_ticks = ticks; }if (reschedule_ticks > 0) { ... } /* An expired one-shot timer must be reset via tx_timer_change before it can be activated again. *//* ... */ if (tx_timer_change(timer_ptr, ticks, reschedule_ticks) == TX_SUCCESS) { /* Call the tx_timer_activate to activates the specified application timer. The expiration routines of timers that expire at the same time are executed in the order they were activated. *//* ... */ if (tx_timer_activate(timer_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_timer_activate(timer_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (tx_timer_change(timer_ptr, ticks, reschedule_ticks) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (status == osOK) { ... } }if (tx_timer_info_get(timer_ptr, NULL, &active, NULL, &reschedule_ticks, NULL) == TX_SUCCESS) { ... } else { /* Return osErrorResource error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osTimerDelete deletes the timer specified by parameter * timer_id. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] timer_id timer ID obtained by osTimerNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osTimerDelete(osTimerId_t timer_id) { /* For TX_TIMER the control block pointer is the timer identifier */ TX_TIMER *timer_ptr = (TX_TIMER *)timer_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the timer control block is valid */ else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((timer_id == NULL) || (timer_ptr->tx_timer_id != TX_TIMER_ID)) { ... } else { /* Call the tx_timer_delete to delete the specified application timer. */ if (tx_timer_delete(timer_ptr) == TX_SUCCESS) { /* Free the already allocated memory for timer control block */ MemFree(timer_ptr); /* Return osOK for success */ status = osOK; }if (tx_timer_delete(timer_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/---------------------------Timer Management APIs /*-----------------------------Event flags APIs------------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osEventFlagsNew creates a new event flags object that * is used to send events across threads and returns the pointer to the * event flags object identifier or NULL in case of an error. It can be * safely called before the RTOS is started (call to osKernelStart), but * not before it is initialized (call to osKernelInitialize). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] attr event flags attributes; NULL: default values. * @retval event flags ID for reference by other functions or NULL in * case of error. *//* ... */ osEventFlagsId_t osEventFlagsNew(const osEventFlagsAttr_t *attr) { /* For ThreadX the control block pointer is the event flags identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = NULL; /* Pointer to the event flags name */ CHAR *name_ptr = NULL; /* The size of control block */ ULONG cb_size = sizeof(TX_EVENT_FLAGS_GROUP); /* Check if this API is called from Interrupt Service Routines */ if (!IS_IRQ_MODE()) { /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the event flags name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_EVENT_FLAGS_GROUP) */ cb_size = sizeof(TX_EVENT_FLAGS_GROUP); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_EVENT_FLAGS_GROUP)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_EVENT_FLAGS_GROUP)) { ... } else { /* Set control block size to attr->cb_size */ cb_size = (ULONG) attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the eventflags_ptr structure for the event flags to be created */ eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (eventflags_ptr == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (eventflags_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ eventflags_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Allocate the eventflags_ptr structure for the event flags to be created */ eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); }else { ... } /* Call the tx_event_flags_create function to create the new event flags */ if (tx_event_flags_create(eventflags_ptr, name_ptr) != TX_SUCCESS) { if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for event flags control block */ MemFree(eventflags_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } }if (tx_event_flags_create(eventflags_ptr, name_ptr) != TX_SUCCESS) { ... } }if (!IS_IRQ_MODE()) { ... } return ((osEventFlagsId_t)eventflags_ptr); }{ ... } /** * @brief The function osEventFlagsGetName returns the pointer to the name * string of the event flags object identified by parameter ef_id or NULL * in case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * @retval name as null-terminated string. *//* ... */ const char *osEventFlagsGetName(osEventFlagsId_t ef_id) { /* For ThreadX the control block pointer is the event flags identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr; /* Check if this API is called from Interrupt Service Routines or the ef_id is NULL *//* ... */ if (IS_IRQ_MODE() || (eventflags_ptr == NULL)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (eventflags_ptr == NULL)) { ... } else { /* Call the tx_event_flags_info_get to get the event flags name_ptr */ if (tx_event_flags_info_get(eventflags_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_event_flags_info_get(eventflags_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (name_ptr); }{ ... } /** * @brief The function osEventFlagsSet sets the event flags specified by the * parameter flags in an event flags object specified by parameter ef_id. * All threads waiting for the flag set will be notified to resume from * BLOCKED state. The function returns the event flags stored in the event * control block or an error code (highest bit is set, refer to Flags * Functions Error Codes). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * [in] flags specifies the flags that shall be set. * @retval event flags after setting or error code if highest bit set. *//* ... */ uint32_t osEventFlagsSet(osEventFlagsId_t ef_id, uint32_t flags) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* The returned flags_status or error */ uint32_t flags_status; /* Flags to set */ ULONG flags_to_set = (ULONG) flags; /* Check if the event flags ID is NULL or the event flags is invalid */ if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { /* Return osFlagsErrorParameter error */ flags_status = osFlagsErrorParameter; }if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { ... } else { /* Call the tx_event_flags_set to set flags */ if (tx_event_flags_set(eventflags_ptr, flags_to_set, TX_OR) == TX_SUCCESS) { /* Call the tx_event_flags_info_get to get the current flags */ if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) &flags_status, NULL, NULL, NULL) != TX_SUCCESS) { /* Return osFlagsErrorUnknown in case of an error */ flags_status = osFlagsErrorUnknown; }if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) &flags_status, NULL, NULL, NULL) != TX_SUCCESS) { ... } }if (tx_event_flags_set(eventflags_ptr, flags_to_set, TX_OR) == TX_SUCCESS) { ... } else { /* Return osFlagsErrorResource in case of error */ flags_status = osFlagsErrorResource; }else { ... } }else { ... } return (flags_status); }{ ... } /** * @brief The function osEventFlagsClear clears the event flags specified by * the parameter flags in an event flags object specified by parameter * ef_id. The function returns the event flags before clearing or an error * code (highest bit is set, refer to Flags Functions Error Codes). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * [in] flags specifies the flags that shall be cleared. * @retval event flags before clearing or error code if highest bit set. *//* ... */ uint32_t osEventFlagsClear(osEventFlagsId_t ef_id, uint32_t flags) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* The returned flags_status or error */ uint32_t flags_status; /* Flags to clear */ ULONG flags_to_clear = (ULONG) ~flags; /* Check if the event flags ID is NULL or the event flags is invalid */ if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { /* Return osFlagsErrorParameter error */ flags_status = osFlagsErrorParameter; }if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { ... } else { /* Call the tx_event_flags_info_get to get the current flags */ if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) &flags_status, NULL, NULL, NULL) != TX_SUCCESS) { /* Return osFlagsErrorUnknown in case of an error */ flags_status = osFlagsErrorUnknown; }if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) &flags_status, NULL, NULL, NULL) != TX_SUCCESS) { ... } else { /* Call the tx_event_flags_set to set flags */ if (tx_event_flags_set(eventflags_ptr, flags_to_clear, TX_AND) != TX_SUCCESS) { /* Return osFlagsErrorResource in case of error */ flags_status = osFlagsErrorResource; }if (tx_event_flags_set(eventflags_ptr, flags_to_clear, TX_AND) != TX_SUCCESS) { ... } }else { ... } }else { ... } return (flags_status); }{ ... } /** * @brief The function osEventFlagsGet returns the event flags currently set * in an event flags object specified by parameter ef_id or 0 in case of * an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * @retval current event flags. *//* ... */ uint32_t osEventFlagsGet(osEventFlagsId_t ef_id) { /* For ThreadX the control block pointer is the event flags identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* The current flags */ uint32_t current_flags = 0; /* Check if the event flags ID is NULL or the event flags is invalid */ if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { /* Return 0 in case of an error */ current_flags = 0; }if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { ... } else { /* Call the tx_event_flags_info_get to get the current flags */ if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) &current_flags, NULL, NULL, NULL) != TX_SUCCESS) { /* Return 0 in case of an error */ current_flags = 0; }if (tx_event_flags_info_get(eventflags_ptr, NULL, (ULONG *) ¤t_flags, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (current_flags); }{ ... } /** * @brief The function osEventFlagsWait suspends the execution of the * currently RUNNING thread until any or all event flags specified by the * parameter flags in the event object specified by parameter ef_id are * set. When these event flags are already set, the function returns * instantly. Otherwise, the thread is put into the state BLOCKED. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * [in] flags specifies the flags to wait for. * [in] options specifies flags options (osFlagsXxxx). * [in] timeout Timeout Value or 0 in case of no time-out. * @retval event flags before clearing or error code if highest bit set. *//* ... */ uint32_t osEventFlagsWait(osEventFlagsId_t ef_id, uint32_t flags, uint32_t options, uint32_t timeout) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* Flags to get */ ULONG requested_flags = (ULONG) flags; /* The ThreadX wait option */ ULONG wait_option = (ULONG) timeout; /* The ThreadX get options */ UINT get_option = 0; /* The actual flags */ ULONG actual_flags = 0; /* ThreadX APIs status */ UINT status; /* Check if the event flags ID is NULL or the event flags is invalid or non-zero timeout specified in an ISR */ if ((IS_IRQ_MODE() && (timeout != 0)) || (ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { /* Return osFlagsErrorParameter error */ actual_flags = osFlagsErrorParameter; }if ((IS_IRQ_MODE() && (timeout != 0)) || (ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { ... } else { if (options == osFlagsNoClear) { get_option = TX_AND; }if (options == osFlagsNoClear) { ... } else { get_option = TX_AND_CLEAR; }else { ... } /* Call the tx_event_flags_get to get flags */ status = tx_event_flags_get(eventflags_ptr, requested_flags, get_option, &actual_flags, wait_option); /* Check the status */ if ((status == TX_NO_EVENTS) || (status == TX_WAIT_ERROR)) { /* Return osFlagsErrorTimeout for timeout error */ actual_flags = osFlagsErrorTimeout; }if ((status == TX_NO_EVENTS) || (status == TX_WAIT_ERROR)) { ... } else if (status != TX_SUCCESS) { /* Return osFlagsErrorResource in case of an error */ actual_flags = osFlagsErrorResource ; }else if (status != TX_SUCCESS) { ... } }else { ... } return ((uint32_t)actual_flags); }{ ... } /** * @brief The function osEventFlagsDelete deletes the event flags object * specified by parameter ef_id and releases the internal memory obtained * for the event flags handling. After this call, the ef_id is no longer * valid and cannot be used. This can cause starvation of threads that are * waiting for flags of this event object. The ef_id may be created again * using the function osEventFlagsNew. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] ef_id event flags ID obtained by osEventFlagsNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osEventFlagsDelete(osEventFlagsId_t ef_id) { /* For ThreadX the control block pointer is the event flags identifier */ TX_EVENT_FLAGS_GROUP *eventflags_ptr = (TX_EVENT_FLAGS_GROUP *)ef_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the event flags ID is NULL or the event flags is invalid */ else if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((ef_id == NULL) || (eventflags_ptr -> tx_event_flags_group_id != TX_EVENT_FLAGS_ID)) { ... } else { /* Call the tx_event_flags_delete to delete the event flags object */ if (tx_event_flags_delete(eventflags_ptr) == TX_SUCCESS) { /* Free the already allocated memory for thread control block */ if (MemFree(eventflags_ptr) == osOK) { /* Return osOK for success */ status = osOK; }if (MemFree(eventflags_ptr) == osOK) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (tx_event_flags_delete(eventflags_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/-----------------------------Event flags APIs /*---------------------------Mutex Management APIs---------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osMutexNew creates and initializes a new mutex * object and returns the pointer to the mutex object identifier or * NULL in case of an error. It can be safely called before the RTOS * is started (call to osKernelStart), but not before it is initialized * call to osKernelInitialize). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] attr mutex attributes; NULL: default values. * @retval mutex ID for reference by other functions or NULL in case of error. *//* ... */ osMutexId_t osMutexNew(const osMutexAttr_t *attr) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = NULL; /* Pointer to the mutex name */ CHAR *name_ptr = NULL; /* The mutex inherit status */ UINT inherit = TX_INHERIT; /* The size of control block */ ULONG cb_size = sizeof(TX_MUTEX); /* Check if this API is called from Interrupt Service Routines */ if (!IS_IRQ_MODE()) { /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the mutex name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check if the attr_bits is not zero */ if (attr->attr_bits != 0) { /* Check the mutex inherit status */ if ((attr->attr_bits & osMutexPrioInherit) == osMutexPrioInherit) { inherit = TX_INHERIT; }if ((attr->attr_bits & osMutexPrioInherit) == osMutexPrioInherit) { ... } else { inherit = TX_NO_INHERIT; }else { ... } }if (attr->attr_bits != 0) { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_MUTEX) */ cb_size = sizeof(TX_MUTEX); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_MUTEX)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_MUTEX)) { ... } else { /* Set control block size to attr->cb_size */ cb_size = (ULONG) attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the mutex_ptr structure for the mutex to be created */ mutex_ptr = (TX_MUTEX *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (mutex_ptr == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (mutex_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ mutex_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Allocate the mutex_ptr structure for the mutex to be created */ mutex_ptr = (TX_MUTEX *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); }else { ... } /* Call the tx_mutex_create function to create the new mutex */ if (tx_mutex_create(mutex_ptr, name_ptr, inherit) != TX_SUCCESS) { if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for mutex control block */ MemFree(mutex_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } }if (tx_mutex_create(mutex_ptr, name_ptr, inherit) != TX_SUCCESS) { ... } }if (!IS_IRQ_MODE()) { ... } return ((osMutexId_t)mutex_ptr); }{ ... } /** * @brief The function osMutexGetName returns the pointer to the name string * of the mutex identified by parameter mutex_id or NULL in case of * an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mutex_id mutex ID obtained by osMutexNew. * @retval name as null-terminated string. *//* ... */ const char *osMutexGetName(osMutexId_t mutex_id) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = (TX_MUTEX *)mutex_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr; /* Check if this API is called from Interrupt Service Routines or the mutex_id is NULL or the mutex is invalid *//* ... */ if (IS_IRQ_MODE() || (mutex_ptr == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (mutex_ptr == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { ... } else { /* Call the tx_mutex_info_get to get the mutex name_ptr */ if (tx_mutex_info_get(mutex_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_mutex_info_get(mutex_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (name_ptr); }{ ... } /** * @brief The blocking function osMutexAcquire waits until a mutex object * specified by parameter mutex_id becomes available. If no other thread * has obtained the mutex, the function instantly returns and blocks * the mutex object. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mutex_id mutex ID obtained by osMutexNew. * [in] timeout Timeout Value or 0 in case of no time-out. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMutexAcquire(osMutexId_t mutex_id, uint32_t timeout) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = (TX_MUTEX *)mutex_id; /* The returned status or error */ osStatus_t status; /* The ThreadX wait option */ ULONG wait_option = (ULONG) timeout; /* The tx_mutex_get returned status */ UINT tx_status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the mutex ID is NULL or the mutex is invalid */ else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { ... } else { /* Call the tx_mutex_get to get the mutex object */ tx_status = tx_mutex_get(mutex_ptr, wait_option); if (tx_status == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_status == TX_SUCCESS) { ... } else if (tx_status == TX_WAIT_ABORTED) { /* Return osErrorTimeout when the mutex is not obtained in the given time */ status = osErrorTimeout; }else if (tx_status == TX_WAIT_ABORTED) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osMutexRelease releases a mutex specified by parameter * mutex_id. Other threads that currently wait for this mutex will be * put into the READY state. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mutex_id mutex ID obtained by osMutexNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMutexRelease(osMutexId_t mutex_id) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = (TX_MUTEX *)mutex_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the mutex ID is NULL or the mutex is invalid */ else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { ... } else { /* Call the tx_mutex_put to put the mutex object */ if (tx_mutex_put(mutex_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_mutex_put(mutex_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osMutexGetOwner returns the thread ID of the thread * that acquired a mutex specified by parameter mutex_id. In case of an * error or if the mutex is not blocked by any thread, it returns NULL. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mutex_id mutex ID obtained by osMutexNew. * @retval thread ID of owner thread or NULL when mutex was not acquired. *//* ... */ osThreadId_t osMutexGetOwner(osMutexId_t mutex_id) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = (TX_MUTEX *)mutex_id; /* The owner thread of the mutex object */ TX_THREAD *thread_ptr = NULL; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return NULL when the API is called from ISR */ thread_ptr = NULL; }if (IS_IRQ_MODE()) { ... } /* Check if the mutex ID is NULL or the mutex is invalid */ else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { /* Return NULL when mutex_id is NULL */ thread_ptr = NULL; }else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { ... } else { /* Call the tx_mutex_info_get to get the mutex thread owner */ if (tx_mutex_info_get(mutex_ptr, NULL, NULL, &thread_ptr, NULL, NULL, NULL) == TX_SUCCESS) { if (thread_ptr == TX_NULL) { /* Return NULL when mutex object is not acquired */ thread_ptr = NULL; }if (thread_ptr == TX_NULL) { ... } }if (tx_mutex_info_get(mutex_ptr, NULL, NULL, &thread_ptr, NULL, NULL, NULL) == TX_SUCCESS) { ... } else { /* Return NULL when mutex_id is invalid */ thread_ptr = NULL; }else { ... } }else { ... } return ((osThreadId_t)thread_ptr); }{ ... } /** * @brief The function osMutexDelete deletes a mutex object specified by * parameter mutex_id. It releases internal memory obtained for mutex * handling. After this call, the mutex_id is no longer valid and cannot * be used. The mutex may be created again using the function osMutexNew. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mutex_id mutex ID obtained by osMutexNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMutexDelete(osMutexId_t mutex_id) { /* For ThreadX the control block pointer is the mutex identifier */ TX_MUTEX *mutex_ptr = (TX_MUTEX *)mutex_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the mutex ID is NULL or the mutex is invalid*/ else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((mutex_id == NULL) || (mutex_ptr -> tx_mutex_id != TX_MUTEX_ID)) { ... } else { /* Call the tx_mutex_delete to delete the mutex object */ if (tx_mutex_delete(mutex_ptr) == TX_SUCCESS) { /* Free the already allocated memory for mutex control block */ if (MemFree(mutex_ptr) == osOK) { /* Return osOK for success */ status = osOK; }if (MemFree(mutex_ptr) == osOK) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (tx_mutex_delete(mutex_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/---------------------------Mutex Management APIs /*------------------------------Semaphores APIs------------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osSemaphoreNew creates and initializes a semaphore * object that is used to manage access to shared resources and returns * the pointer to the semaphore object identifier or NULL in case of an * error. It can be safely called before the RTOS is started * (call to osKernelStart), but not before it is initialized * (call to osKernelInitialize). * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] max_count maximum number of available tokens. * [in] initial_count initial number of available tokens. * [in] attr semaphore attributes; NULL: default values. * @retval semaphore ID for reference by other functions or NULL in case of error. *//* ... */ osSemaphoreId_t osSemaphoreNew(uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_SEMAPHORE *semaphore_ptr = NULL; /* Pointer to the semaphore name */ CHAR *name_ptr = NULL; /* The semaphore initial count */ ULONG init_count = (ULONG) initial_count; /* The size of control block */ ULONG cb_size = sizeof(TX_SEMAPHORE); /* Check if this API is called from Interrupt Service Routines */ if (!IS_IRQ_MODE()) { /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the semaphore name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_SEMAPHORE) */ cb_size = sizeof(TX_SEMAPHORE); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_SEMAPHORE)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_SEMAPHORE)) { ... } else { /* Set control block size to attr->cb_size */ cb_size = (ULONG) attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the semaphore_ptr structure for the semaphore to be created */ semaphore_ptr = (TX_SEMAPHORE *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (semaphore_ptr == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (semaphore_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ semaphore_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Allocate the semaphore_ptr structure for the semaphore to be created */ semaphore_ptr = (TX_SEMAPHORE *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); }else { ... } /* Call the tx_semaphore_create function to create the new semaphore */ if (tx_semaphore_create(semaphore_ptr, name_ptr, init_count) != TX_SUCCESS) { if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for semaphore control block */ MemFree(semaphore_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } }if (tx_semaphore_create(semaphore_ptr, name_ptr, init_count) != TX_SUCCESS) { ... } }if (!IS_IRQ_MODE()) { ... } return ((osSemaphoreId_t)semaphore_ptr); }{ ... } /** * @brief The function osSemaphoreGetName returns the pointer to the name * string of the semaphore identified by parameter semaphore_id or NULL * in case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] semaphore_id semaphore ID obtained by osSemaphoreNew. * @retval name as null-terminated string. *//* ... */ const char *osSemaphoreGetName(osSemaphoreId_t semaphore_id) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_SEMAPHORE *semaphore_ptr = (TX_SEMAPHORE *)semaphore_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr; /* Check if this API is called from Interrupt Service Routines or the semaphore_id is NULL and the semaphore is invalid *//* ... */ if (IS_IRQ_MODE() || (semaphore_ptr == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (semaphore_ptr == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { ... } else { /* Call the tx_semaphore_info_get to get the semaphore name_ptr */ if (tx_semaphore_info_get(semaphore_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_semaphore_info_get(semaphore_ptr, &name_ptr, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (name_ptr); }{ ... } /** * @brief The blocking function osSemaphoreAcquire waits until a token of the * semaphore object specified by parameter semaphore_id becomes available. * If a token is available, the function instantly returns and decrements * the token count. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] semaphore_id semaphore ID obtained by osSemaphoreNew. * [in] timeout Timeout Value or 0 in case of no time-out. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osSemaphoreAcquire(osSemaphoreId_t semaphore_id, uint32_t timeout) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_SEMAPHORE *semaphore_ptr = (TX_SEMAPHORE *)semaphore_id; /* The returned status or error */ osStatus_t status; /* The ThreadX wait option */ ULONG wait_option = (ULONG) timeout; /* The tx_semaphore_get returned status */ UINT tx_status; /* Check if the semaphore ID is NULL or the semaphore is invalid or non-zero timeout specified in an ISR */ if ((IS_IRQ_MODE() && (timeout != 0)) || (semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }if ((IS_IRQ_MODE() && (timeout != 0)) || (semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { ... } else { /* Call the tx_semaphore_get to get the semaphore object */ tx_status = tx_semaphore_get(semaphore_ptr, wait_option); if (tx_status == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_status == TX_SUCCESS) { ... } else if (tx_status == TX_WAIT_ABORTED) { /* Return osErrorTimeout when the semaphore is not obtained in the given time *//* ... */ status = osErrorTimeout; }else if (tx_status == TX_WAIT_ABORTED) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osSemaphoreRelease releases a token of the semaphore * object specified by parameter semaphore_id. Tokens can only be released * up to the maximum count specified at creation time, see osSemaphoreNew. * Other threads that currently wait for a token of this semaphore object * will be put into the READY state. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] semaphore_id semaphore ID obtained by osSemaphoreNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osSemaphoreRelease(osSemaphoreId_t semaphore_id) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_SEMAPHORE *semaphore_ptr = (TX_SEMAPHORE *)semaphore_id; /* The returned status or error */ osStatus_t status; /* Check if the semaphore ID is NULL or the semaphore is invalid */ if ((semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }if ((semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { ... } else { /* Call the tx_semaphore_put to put the semaphore object */ if (tx_semaphore_put(semaphore_ptr) == TX_SUCCESS) { /* Return osOK for success */ status = osOK; }if (tx_semaphore_put(semaphore_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osSemaphoreDelete deletes a semaphore object specified * by parameter semaphore_id. It releases internal memory obtained for * semaphore handling. After this call, the semaphore_id is no longer * valid and cannot be used. The semaphore may be created again using * the function osSemaphoreNew. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] semaphore_id semaphore ID obtained by osSemaphoreNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osSemaphoreDelete(osSemaphoreId_t semaphore_id) { /* For ThreadX the control block pointer is the semaphore identifier */ TX_SEMAPHORE *semaphore_ptr = (TX_SEMAPHORE *)semaphore_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the semaphore ID is NULL or the semaphore is invalid */ else if ((semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((semaphore_id == NULL) || (semaphore_ptr -> tx_semaphore_id != TX_SEMAPHORE_ID)) { ... } else { /* Call the tx_semaphore_delete to delete the semaphore object */ if (tx_semaphore_delete(semaphore_ptr) == TX_SUCCESS) { /* Free the already allocated memory for semaphore control block */ if (MemFree(semaphore_ptr) == osOK) { /* Return osOK for success */ status = osOK; }if (MemFree(semaphore_ptr) == osOK) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }if (tx_semaphore_delete(semaphore_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/------------------------------Semaphores APIs /*------------------------------Message Queue APIs---------------------------*/ /*---------------------------------------------------------------------------*/ /** * @brief The function osMessageQueueNew creates and initializes a message queue * object. The function returns a message queue object identifier * or NULL in case of an error. * The function can be called after kernel initialization with osKernelInitialize. * It is possible to create message queue objects before the RTOS kernel is * started with osKernelStart. * The total amount of memory required for the message queue data is at least * msg_count * msg_size. The msg_size is rounded up to a double even number to * ensure 32-bit alignment of the memory blocks. * The memory blocks allocated from the message queue have a fixed size defined * with the parameter msg_size. * Note : This function Cannot be called from Interrupt Service * Routines. * @param [in] msg_count maximum number of messages in queue. * [in] msg_size maximum message size in bytes. * [in] attr message queue attributes; NULL: default values. * @retval message queue ID for reference by other functions or NULL in case of error. *//* ... */ osMessageQueueId_t osMessageQueueNew(uint32_t msg_count, uint32_t msg_size, const osMessageQueueAttr_t *attr) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = NULL; /* Pointer to the message queue name */ CHAR *name_ptr = NULL; /* Pointer to start address of the message queue data */ VOID *queue_start = NULL; /* The message queue data size */ ULONG queue_size = 0U; /* The message queue control block size */ ULONG cb_size = 0U; /* Check if this API is called from Interrupt Service Routines or the msg_count is equal to 0 or msg_size is equal to 0 *//* ... */ if (!IS_IRQ_MODE() && (msg_count > 0) && (msg_size > 0)) { /* Initialize the name_ptr to NULL */ name_ptr = NULL; /* The msg_size is rounded up to a double even number to ensure 32-bit alignment of the memory blocks. */ msg_size = msg_size + (msg_size % sizeof(ULONG)); /* Check if the attr is not NULL */ if (attr != NULL) { /* Check if the name_ptr is not NULL */ if (attr->name != NULL) { /* Set the message queue name_ptr */ name_ptr = (CHAR *)attr->name; }if (attr->name != NULL) { ... } /* Check if the message queue data size is equal to 0 */ if (attr->mq_size == 0U) { /* Set message queue data size to msg_count * msg_size (The total amount of memory required for the message queue data) *//* ... */ queue_size = msg_count * msg_size; }if (attr->mq_size == 0U) { ... } else if (attr->mq_size < (msg_count * msg_size)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->mq_size < (msg_count * msg_size)) { ... } else if (attr->mq_size < TX_BYTE_POOL_MIN) { /* Set message queue data size to TX_BYTE_POOL_MIN */ queue_size = TX_BYTE_POOL_MIN; }else if (attr->mq_size < TX_BYTE_POOL_MIN) { ... } else { /* Set message queue data size to attr->mq_size */ queue_size = (ULONG)attr->mq_size; }else { ... } /* Check if the input message queue data pointer is NULL */ if (attr->mq_mem == NULL) { /* Allocate the data for the message queue to be created */ queue_start = MemAlloc(queue_size, RTOS2_BYTE_POOL_STACK_TYPE); if (queue_start == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (queue_start == NULL) { ... } }if (attr->mq_mem == NULL) { ... } else { if (attr->mq_size == 0U) { /* Return NULL pointer in case of error */ return (NULL); }if (attr->mq_size == 0U) { ... } else { /* Set message queue data size to attr->mq_size */ queue_size = (ULONG)attr->mq_size; }else { ... } /* The message queue data shall point to the input message queue data memory address */ queue_start = attr->mq_mem; }else { ... } /* Check if the control block size is equal to 0 */ if (attr->cb_size == 0U) { /* Set control block size to sizeof(TX_QUEUE) */ cb_size = sizeof(TX_QUEUE); }if (attr->cb_size == 0U) { ... } else if (attr->cb_size < sizeof(TX_QUEUE)) { /* Return NULL pointer in case of error */ return (NULL); }else if (attr->cb_size < sizeof(TX_QUEUE)) { ... } else { /* Set message queue data size to attr->cb_size */ cb_size = (ULONG)attr->cb_size; }else { ... } /* Check if the input control block pointer is NULL */ if (attr->cb_mem == NULL) { /* Allocate the queue_ptr structure for the message queue to be created */ queue_ptr = (TX_QUEUE *)MemAlloc(cb_size, RTOS2_BYTE_POOL_HEAP_TYPE); if (queue_ptr == NULL) { /* Check if the memory for message queue data has been internally allocated */ if (attr->mq_mem == NULL) { /* Free the already allocated memory for message queue data */ MemFree(queue_start); }if (attr->mq_mem == NULL) { ... } /* Return NULL pointer in case of error */ return (NULL); }if (queue_ptr == NULL) { ... } }if (attr->cb_mem == NULL) { ... } else { /* The control block shall point to the input cb_mem memory address */ queue_ptr = attr->cb_mem; }else { ... } }if (attr != NULL) { ... } else { /* Initialize the name_ptr to NULL */ name_ptr = NULL; /* Initialize the message queue data size to msg_count * msg_size (The total amount of memory required for the message queue data) *//* ... */ queue_size = msg_count * msg_size; /* Allocate the data for the message queue to be created */ queue_start = MemAlloc(queue_size, RTOS2_BYTE_POOL_STACK_TYPE); if (queue_start == NULL) { /* Return NULL pointer in case of error */ return (NULL); }if (queue_start == NULL) { ... } /* Allocate the queue_ptr structure for the message queue to be created */ queue_ptr = (TX_QUEUE *)MemAlloc(sizeof(TX_QUEUE), RTOS2_BYTE_POOL_HEAP_TYPE); if (queue_ptr == NULL) { /* Free the already allocated memory for message queue data */ MemFree(queue_start); /* Return NULL pointer in case of error */ return (NULL); }if (queue_ptr == NULL) { ... } }else { ... } /* For threadX the message size is in 32-Bits */ msg_size = msg_size / sizeof(ULONG); /* Call the tx_queue_create function to create the new message queue */ if (tx_queue_create(queue_ptr, name_ptr, msg_size, queue_start, queue_size) != TX_SUCCESS) { /* Check if the memory for message queue control block has been internally allocated *//* ... */ if ((attr->cb_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for message queue control block */ MemFree(queue_ptr); }if ((attr->cb_mem == NULL) || (attr == NULL)) { ... } /* Check if the memory for message queue data has been internally allocated */ if ((attr->mq_mem == NULL) || (attr == NULL)) { /* Free the already allocated memory for message queue data */ MemFree(queue_start); }if ((attr->mq_mem == NULL) || (attr == NULL)) { ... } /* Return NULL pointer in case of error */ queue_ptr = NULL; }if (tx_queue_create(queue_ptr, name_ptr, msg_size, queue_start, queue_size) != TX_SUCCESS) { ... } }if (!IS_IRQ_MODE() && (msg_count > 0) && (msg_size > 0)) { ... } return ((osMessageQueueId_t)queue_ptr); }{ ... } /** * @brief The function osMessageQueueGetName returns the pointer to the name * string of the message queue identified by parameter mq_id or NULL in * case of an error. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval name_ptr as null-terminated string. *//* ... */ const char *osMessageQueueGetName(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The output name_ptr as null-terminated string */ CHAR *name_ptr = NULL; /* Check if this API is called from Interrupt Service Routines, the mq_id is NULL or mq_id->tx_queue_id != TX_QUEUE_ID *//* ... */ if (IS_IRQ_MODE() || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return NULL in case of an error */ name_ptr = NULL; }if (IS_IRQ_MODE() || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Call the tx_queue_info_get to get the queue name_ptr */ if (tx_queue_info_get(queue_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return NULL in case of an error */ name_ptr = NULL; }if (tx_queue_info_get(queue_ptr, &name_ptr, NULL, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (name_ptr); }{ ... } /** * @brief The function osMessageQueueGetCapacity returns the maximum number of * messages in the message queue object specified by parameter mq_id or * 0 in case of an error. * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval maximum number of messages. *//* ... */ uint32_t osMessageQueueGetCapacity(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The specific maximum number of messages */ uint32_t max_messages_number; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return 0 in case of error */ max_messages_number = 0U; }if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Return the total number of messages in the queue */ max_messages_number = queue_ptr->tx_queue_capacity; }else { ... } return (max_messages_number); }{ ... } /** * @brief The function osMessageQueueGetMsgSize returns the maximum message * size in bytes for the message queue object specified by parameter * mq_id or 0 in case of an error. * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval maximum message size in bytes. *//* ... */ uint32_t osMessageQueueGetMsgSize(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The specific maximum message size in bytes */ uint32_t max_messages_size; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return 0 in case of error */ max_messages_size = 0U; }if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Return the message size that was specified in queue creation */ max_messages_size = queue_ptr->tx_queue_message_size * sizeof(ULONG); }else { ... } return (max_messages_size); }{ ... } /** * @brief The function osMessageQueueGetCount returns the number of queued * messages in the message queue object specified by parameter mq_id or * 0 in case of an error. * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval number of queued messages. *//* ... */ uint32_t osMessageQueueGetCount(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The specific number of queued messages */ uint32_t queued_messages_number = 0U; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return 0 in case of error */ queued_messages_number = 0U; }if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Call the tx_queue_info_get to get the number of queued messages */ if (tx_queue_info_get(queue_ptr, NULL, (ULONG *)&queued_messages_number, NULL, NULL, NULL, NULL) != TX_SUCCESS) { /* Return 0 in case of error */ queued_messages_number = 0U; }if (tx_queue_info_get(queue_ptr, NULL, (ULONG *)&queued_messages_number, NULL, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (queued_messages_number); }{ ... } /** * @brief The function osMessageQueueGetSpace returns the number available * slots for messages in the message queue object specified by * parameter mq_id or 0 in case of an error. * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval number of available slots for messages. *//* ... */ uint32_t osMessageQueueGetSpace(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The specific number of queued messages */ uint32_t queue_messages_free_slots = 0U; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return 0 in case of error */ queue_messages_free_slots = 0U; }if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Call the tx_queue_info_get to get the number of available slots for messages *//* ... */ if (tx_queue_info_get(queue_ptr, NULL, NULL, (ULONG *)&queue_messages_free_slots, NULL, NULL, NULL) != TX_SUCCESS) { /* Return 0 in case of error */ queue_messages_free_slots = 0U; }if (tx_queue_info_get(queue_ptr, NULL, NULL, (ULONG *)&queue_messages_free_slots, NULL, NULL, NULL) != TX_SUCCESS) { ... } }else { ... } return (queue_messages_free_slots); }{ ... } /** * @brief The function osMessageQueueReset resets the message queue specified * by the parameter mq_id. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMessageQueueReset(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ else if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Call the tx_queue_flush deletes all messages stored in the specified message queue *//* ... */ if (tx_queue_flush(queue_ptr) == TX_SUCCESS) { /* Return osOK in case of success */ status = osOK; }if (tx_queue_flush(queue_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osMessageQueueDelete deletes a message queue object * specified by parameter mq_id. It releases internal memory obtained * for message queue handling. After this call, the mq_id is no longer * valid and cannot be used. The message queue may be created again * using the function osMessageQueueNew. * Note : This function cannot be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMessageQueueDelete(osMessageQueueId_t mq_id) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The returned status or error */ osStatus_t status; /* Check if this API is called from Interrupt Service Routines */ if (IS_IRQ_MODE()) { /* Return osErrorISR error */ status = osErrorISR; }if (IS_IRQ_MODE()) { ... } /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID */ else if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { /* Return osErrorParameter error */ status = osErrorParameter; }else if ((queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID)) { ... } else { /* Call the tx_queue_delete deletes the specified message queue */ if (tx_queue_delete(queue_ptr) == TX_SUCCESS) { /* Free the already allocated memory for message queue data */ MemFree(queue_ptr->tx_queue_start); /* Free the already allocated memory for message queue control block */ MemFree(queue_ptr); /* Return osOK in case of success */ status = osOK; }if (tx_queue_delete(queue_ptr) == TX_SUCCESS) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The blocking function osMessageQueuePut puts the message pointed to * by msg_ptr into the the message queue specified by parameter mq_id. * The parameter msg_prio is used to sort message according their * priority (higher numbers indicate a higher priority) on insertion. * The parameter timeout specifies how long the system waits to put the * message into the queue. While the system waits, the thread that is * calling this function is put into the BLOCKED state. The parameter * timeout can have the following values: * * when timeout is 0, the function returns instantly (i.e. try * semantics). * * when timeout is set to osWaitForever the function will wait for an * infinite time until the message is delivered (i.e. wait semantics). * * all other values specify a time in kernel ticks for a timeout * (i.e. timed-wait semantics). * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * [in] msg_ptr pointer to buffer with message to put into a queue. * [in] msg_prio message priority. * [in] timeout Timeout Value or 0 in case of no time-out. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMessageQueuePut(osMessageQueueId_t mq_id, const void *msg_ptr, uint8_t msg_prio, uint32_t timeout) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The returned value from ThreadX call */ UINT tx_status; /* The returned status or error */ osStatus_t status; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID or non-zero timeout specified in an ISR */ if ((IS_IRQ_MODE() && (timeout != 0)) || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID) || (msg_ptr == NULL)) { /* Return osErrorParameter error */ status = osErrorParameter; }if ((IS_IRQ_MODE() && (timeout != 0)) || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID) || (msg_ptr == NULL)) { ... } else { /* Call the tx_queue_send to send a message to the specified message queue */ tx_status = tx_queue_send(queue_ptr, (void *)msg_ptr, timeout); if (tx_status == TX_SUCCESS) { /* Return osOK in case of success */ status = osOK; }if (tx_status == TX_SUCCESS) { ... } else if (tx_status == TX_QUEUE_FULL) { /* Return osErrorResource in case of error */ status = osErrorResource; }else if (tx_status == TX_QUEUE_FULL) { ... } else { /* Return osErrorTimeout in case of error */ status = osErrorTimeout; }else { ... } }else { ... } return (status); }{ ... } /** * @brief The function osMessageQueueGet retrieves a message from the message * queue specified by the parameter mq_id and saves it to the buffer pointed * to by the parameter msg_ptr. The message priority is stored to parameter * msg_prio if not token{NULL}. * The parameter timeout specifies how long the system waits to retrieve * the message from the queue. While the system waits, the thread that is * calling this function is put into the BLOCKED state. * The parameter timeout can have the following values: * * when timeout is 0, the function returns instantly (i.e. try * semantics). * * when timeout is set to osWaitForever the function will wait for an * infinite time until the message is delivered (i.e. wait semantics). * * all other values specify a time in kernel ticks for a timeout * (i.e. timed-wait semantics). * Note : This function may be called from Interrupt Service * Routines. * @param [in] mq_id message queue ID obtained by osMessageQueueNew. * [out] msg_ptr pointer to buffer for message to get from a queue. * [out] msg_prio pointer to buffer for message priority or NULL. * [in] timeout Timeout Value or 0 in case of no time-out. * @retval status code that indicates the execution status of the function. *//* ... */ osStatus_t osMessageQueueGet(osMessageQueueId_t mq_id, void *msg_ptr, uint8_t *msg_prio, uint32_t timeout) { /* For TX_QUEUE the control block pointer is the queue identifier */ TX_QUEUE *queue_ptr = (TX_QUEUE *)mq_id; /* The returned value from ThreadX call */ UINT tx_status; /* The returned status or error */ osStatus_t status; /* Check if the mq_id is NULL or queue_ptr->tx_queue_id != TX_QUEUE_ID or non-zero timeout specified in an ISR */ if ((IS_IRQ_MODE() && (timeout != 0)) || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID) || (msg_ptr == NULL)) { /* Return osErrorParameter error */ status = osErrorParameter; }if ((IS_IRQ_MODE() && (timeout != 0)) || (queue_ptr == NULL) || (queue_ptr->tx_queue_id != TX_QUEUE_ID) || (msg_ptr == NULL)) { ... } else { /* Call the tx_queue_receive to retrieves a message from the specified message queue */ tx_status = tx_queue_receive(queue_ptr, msg_ptr, timeout); if (tx_status == TX_SUCCESS) { /* Return osOK in case of success */ status = osOK; }if (tx_status == TX_SUCCESS) { ... } else if (tx_status == TX_QUEUE_EMPTY) { /* Return osErrorTimeout in case of error */ status = osErrorTimeout; }else if (tx_status == TX_QUEUE_EMPTY) { ... } else if (tx_status == TX_WAIT_ERROR) { /* Return osErrorParameter when a non-zero timeout is used in ISR context */ status = osErrorParameter; }else if (tx_status == TX_WAIT_ERROR) { ... } else { /* Return osErrorResource in case of error */ status = osErrorResource; }else { ... } }else { ... } return (status); }{ ... } /*---------------------------------------------------------------------------*/------------------------------Message Queue APIs /*------------------------tx_application_define API--------------------------*/ /*---------------------------------------------------------------------------*/ __WEAK VOID tx_application_define(VOID *first_unused_memory) { /* Empty tx_application_define() */ }{ ... }
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