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/**
******************************************************************************
* @file FatFs/FatFs_USBDisk_MultipleAccess_RTOS/Src/main.c
* @author MCD Application Team
* @brief Main program body
* This sample code shows how to use FatFs with USB disk drive with
* multiple access in RTOS mode.
******************************************************************************
* @attention
*
* Copyright (c) 2017 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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
FATFS USBDISKFatFs; /* File system object for USB disk logical drive */
FIL MyFile1, MyFile2; /* File objects */
char USBDISKPath[4]; /* USB Host logical drive path */
USBH_HandleTypeDef hUSBHost; /* USB Host handle */
uint8_t disk_op = 0;
typedef enum {
DISCONNECTION_EVENT = 1,
CONNECTION_EVENT,
}MSC_ApplicationTypeDef;
typedef enum {
DISK_READY_EVENT = 1,
DISK_REMOVE_EVENT,
}FatFs_DiskTypeDef;
osMessageQId AppliEvent;
osMessageQId DiskEvent;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);
static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id);
static void MSC_Application(void);
static void StartThread(void const *argument);
static void ConcurrentThread(void const *argument);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 168 MHz */
SystemClock_Config();
/* Configure LED1, LED3 and LED4 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/*##-1- Start task #########################################################*/
osThreadDef(USER_Thread, StartThread, osPriorityNormal, 0, 8 * configMINIMAL_STACK_SIZE);
osThreadCreate(osThread(USER_Thread), NULL);
osThreadDef(USER_ConcurrentThread, ConcurrentThread, osPriorityHigh, 0, 8 * configMINIMAL_STACK_SIZE);
osThreadCreate(osThread(USER_ConcurrentThread), NULL);
/*##-2- Create Application Queue ###########################################*/
osMessageQDef(app_queue, 1, uint16_t);
AppliEvent = osMessageCreate(osMessageQ(app_queue), NULL);
/*##-3- Create Disk Queue ##################################################*/
osMessageQDef(disk_queue, 1, uint16_t);
DiskEvent = osMessageCreate(osMessageQ(disk_queue), NULL);
/*##-4- Start scheduler ####################################################*/
osKernelStart();
/* We should never get here as control is now taken by the scheduler */
for( ;; );
}
/**
* @brief Start task
* @param pvParameters not used
* @retval None
*/
static void StartThread(void const *argument)
{
osEvent event;
/* Link the USB Host disk I/O driver */
if(FATFS_LinkDriver(&USBH_Driver, USBDISKPath) == 0)
{
/* Init Host Library */
USBH_Init(&hUSBHost, USBH_UserProcess, 0);
/* Add Supported Class */
USBH_RegisterClass(&hUSBHost, USBH_MSC_CLASS);
/* Start Host Process */
USBH_Start(&hUSBHost);
for( ;; )
{
event = osMessageGet(AppliEvent, osWaitForever);
if(event.status == osEventMessage)
{
switch(event.value.v)
{
case CONNECTION_EVENT:
MSC_Application();
break;
case DISCONNECTION_EVENT:
f_mount(NULL, (TCHAR const*)"", 0);
break;
default:
break;
}
}
}
}
}
/**
* @brief Concurrent task
* @param pvParameters not used
* @retval None
*/
static void ConcurrentThread(void const *argument)
{
osEvent event;
FRESULT res; /* FatFs function common result code */
uint16_t byteswritten; /* File write count */
uint8_t wtext[] = "This is STM32 working with FatFs"; /* File write buffer */
for( ;; )
{
event = osMessageGet(DiskEvent, osWaitForever);
if(event.status == osEventMessage)
{
switch(event.value.v)
{
case DISK_READY_EVENT:
/* Create and Open a new text file object with write access */
if(f_open(&MyFile2, "STM32_2.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
/* 'STM32_2.TXT' file Open for write Error */
Error_Handler();
}
else
{
/* Write data to the text file */
res = f_write(&MyFile2, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
/* 'STM32_2.TXT' file Write or EOF Error */
Error_Handler();
}
else
{
/* Close the open text file */
f_close(&MyFile2);
/* If last access to Disk, unlink drive */
if(disk_op == 1)
{
osMessagePut(DiskEvent, DISK_REMOVE_EVENT, 0);
}
disk_op = 2;
/* Success of the demo: no error occurrence */
BSP_LED_On(LED4);
}
}
break;
case DISK_REMOVE_EVENT:
/* Unlink the USB disk I/O driver */
FATFS_UnLinkDriver(USBDISKPath);
break;
default:
break;
}
}
}
}
/**
* @brief Main routine for Mass Storage Class
* @param None
* @retval None
*/
static void MSC_Application(void)
{
FRESULT res; /* FatFs function common result code */
uint32_t byteswritten; /* File write count */
uint8_t wtext[] = "This is STM32 working with FatFs"; /* File write buffer */
/* Register the file system object to the FatFs module */
if(f_mount(&USBDISKFatFs, (TCHAR const*)USBDISKPath, 0) != FR_OK)
{
/* FatFs Initialization Error */
Error_Handler();
}
else
{
/* Create and Open a new text file object with write access */
if(f_open(&MyFile1, "STM32_1.TXT", FA_CREATE_ALWAYS | FA_WRITE) != FR_OK)
{
/* 'STM32_1.TXT' file Open for write Error */
Error_Handler();
}
else
{
/* Allow Second task to have access to FatFs */
osMessagePut(DiskEvent, DISK_READY_EVENT, 0);
/* Write data to the text file */
res = f_write(&MyFile1, wtext, sizeof(wtext), (void *)&byteswritten);
if((byteswritten == 0) || (res != FR_OK))
{
/* 'STM32_1.TXT' file Write or EOF Error */
Error_Handler();
}
else
{
/* Close the open text file */
f_close(&MyFile1);
/* If last access to Disk, unlink drive */
if(disk_op == 2)
{
osMessagePut(DiskEvent, DISK_REMOVE_EVENT, 0);
}
disk_op = 1;
/* Success of the demo: no error occurrence */
BSP_LED_On(LED1);
}
}
}
}
/**
* @brief User Process
* @param phost: Host handle
* @param id: Host Library user message ID
* @retval None
*/
static void USBH_UserProcess(USBH_HandleTypeDef *phost, uint8_t id)
{
switch(id)
{
case HOST_USER_SELECT_CONFIGURATION:
break;
case HOST_USER_DISCONNECTION:
BSP_LED_Off(LED1);
BSP_LED_Off(LED3);
BSP_LED_Off(LED4);
osMessagePut(AppliEvent, DISCONNECTION_EVENT, 0);
break;
case HOST_USER_CLASS_ACTIVE:
osMessagePut(AppliEvent, CONNECTION_EVENT, 0);
break;
default:
break;
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 168000000
* HCLK(Hz) = 168000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 336
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig (&RCC_OscInitStruct);
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn LED3 on */
BSP_LED_On(LED3);
while(1)
{
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
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