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/**
******************************************************************************
* @file FreeRTOS/FreeRTOS_Signal/Src/main.c
* @author MCD Application Team
* @brief Main program body
******************************************************************************
* @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"
#include "cmsis_os.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define BIT_0 ( 1 << 0 )
#define BIT_1 ( 1 << 1 )
#define BIT_2 ( 1 << 2 )
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
osThreadId LED3_ThreadId, LED4_ThreadId;
/* Private function prototypes -----------------------------------------------*/
static void Signal_Gen_Thread(void const *argument);
static void LED_Thread1(void const *argument);
static void LED_Thread2(void const *argument);
static void SystemClock_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization
*/
HAL_Init();
/* Configure the System clock to 100 MHz */
SystemClock_Config();
/* Initialize LEDs */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* Thread 1 definition */
osThreadDef(LED3, LED_Thread1, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
/* Thread 2 definition */
osThreadDef(LED4, LED_Thread2, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
/* Thread 3 definition */
osThreadDef(SIGNAL_GEN, Signal_Gen_Thread, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
/* Start thread 1 */
LED3_ThreadId = osThreadCreate(osThread(LED3), NULL);
/* Start thread 2 */
LED4_ThreadId = osThreadCreate(osThread(LED4), NULL);
/* Start thread 3 */
osThreadCreate(osThread(SIGNAL_GEN), NULL);
/* Start scheduler */
osKernelStart();
/* We should never get here as control is now taken by the scheduler */
for(;;);
}
/**
* @brief Thread (LED_Thread1) used to toggle a LED when getting the appropriate signal.
* @param Thread not used
* @retval None
*/
static void LED_Thread1(void const *argument)
{
(void) argument;
osEvent event;
for(;;)
{
event = osSignalWait( BIT_0, osWaitForever);
if(event.value.signals == BIT_0)
{
BSP_LED_Toggle(LED3);
}
}
}
/**
* @brief Thread (LED_Thread2) used to toggle a LED when getting the appropriate signal.
* @param argument not used
* @retval None
*/
static void LED_Thread2(void const *argument)
{
(void) argument;
osEvent event;
for(;;)
{
event = osSignalWait( BIT_1 | BIT_2, osWaitForever);
if(event.value.signals == (BIT_1 | BIT_2))
{
BSP_LED_Toggle(LED4);
}
}
}
/**
* @brief Signal generator thread
* @param Thread not used
* @retval None
*/
static void Signal_Gen_Thread(void const *argument)
{
(void) argument;
for(;;)
{
osSignalSet( LED3_ThreadId, BIT_0 );
osDelay(500);
osSignalSet( LED4_ThreadId, BIT_1 | BIT_2 );
osDelay(500);
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 100000000
* HCLK(Hz) = 100000000
* AHB Prescaler = 1
* APB1 Prescaler = 2
* APB2 Prescaler = 1
* HSE Frequency(Hz) = 8000000
* PLL_M = 8
* PLL_N = 200
* PLL_P = 2
* PLL_Q = 7
* PLL_R = 2
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 3
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* 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_BYPASS;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 8;
RCC_OscInitStruct.PLL.PLLN = 200;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 2;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* 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_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3);
if(ret != HAL_OK)
{
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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