mirror of
https://github.com/STMicroelectronics/STM32CubeF4.git
synced 2025-05-06 19:29:19 +08:00
256 lines
7.9 KiB
C
256 lines
7.9 KiB
C
/**
|
|
******************************************************************************
|
|
* @file FreeRTOS/FreeRTOS_Semaphore/Src/main.c
|
|
* @author MCD Application Team
|
|
* @brief Main program body
|
|
******************************************************************************
|
|
* @attention
|
|
*
|
|
* <h2><center>© Copyright (c) 2017 STMicroelectronics.
|
|
* All rights reserved.</center></h2>
|
|
*
|
|
* This software component is licensed by ST under Ultimate Liberty license
|
|
* SLA0044, the "License"; You may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at:
|
|
* www.st.com/SLA0044
|
|
*
|
|
******************************************************************************
|
|
*/
|
|
/* Includes ------------------------------------------------------------------*/
|
|
#include "main.h"
|
|
#include "cmsis_os.h"
|
|
|
|
/* Private typedef -----------------------------------------------------------*/
|
|
/* Private define ------------------------------------------------------------*/
|
|
/* Private macro -------------------------------------------------------------*/
|
|
#define semtstSTACK_SIZE configMINIMAL_STACK_SIZE
|
|
|
|
/* Private variables ---------------------------------------------------------*/
|
|
osThreadId SemThread1Handle, SemThread2Handle;
|
|
osSemaphoreId osSemaphore;
|
|
|
|
/* Private function prototypes -----------------------------------------------*/
|
|
static void SemaphoreThread1(void const *argument);
|
|
static void SemaphoreThread2(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(LED1);
|
|
BSP_LED_Init(LED2);
|
|
|
|
/* Define used semaphore */
|
|
osSemaphoreDef(SEM);
|
|
|
|
/* Create the semaphore used by the two threads */
|
|
osSemaphore = osSemaphoreCreate(osSemaphore(SEM) , 1);
|
|
|
|
/* Create the first Thread */
|
|
osThreadDef(SEM_Thread1, SemaphoreThread1, osPriorityLow, 0, semtstSTACK_SIZE);
|
|
SemThread1Handle = osThreadCreate(osThread(SEM_Thread1), (void *) osSemaphore);
|
|
|
|
/* Create the second Thread */
|
|
osThreadDef(SEM_Thread2, SemaphoreThread2, osPriorityIdle, 0, semtstSTACK_SIZE);
|
|
SemThread2Handle = osThreadCreate(osThread(SEM_Thread2), (void *) osSemaphore);
|
|
|
|
/* Start scheduler */
|
|
osKernelStart();
|
|
|
|
/* We should never get here as control is now taken by the scheduler */
|
|
for (;;);
|
|
|
|
}
|
|
|
|
/**
|
|
* @brief Semaphore Thread 1 function
|
|
* @param argument: shared semaphore
|
|
* @retval None
|
|
*/
|
|
static void SemaphoreThread1(void const *argument)
|
|
{
|
|
uint32_t count = 0;
|
|
osSemaphoreId semaphore = (osSemaphoreId) argument;
|
|
|
|
for (;;)
|
|
{
|
|
|
|
if (semaphore != NULL)
|
|
{
|
|
/* Try to obtain the semaphore */
|
|
if (osSemaphoreWait(semaphore , 100) == osOK)
|
|
{
|
|
count = osKernelSysTick() + 5000;
|
|
|
|
/* Toggle LED2 every 200 ms for 5 seconds */
|
|
while (count >= osKernelSysTick())
|
|
{
|
|
/* Toggle LED1 */
|
|
BSP_LED_Toggle(LED1);
|
|
|
|
/* Delay 200 ms */
|
|
osDelay(200);
|
|
}
|
|
|
|
/* Turn off LED1*/
|
|
BSP_LED_Off(LED1);
|
|
/* Release the semaphore */
|
|
osSemaphoreRelease(semaphore);
|
|
|
|
/* Suspend ourseleves to execute thread 2 (lower priority) */
|
|
osThreadSuspend(NULL);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Semaphore Thread 2 function
|
|
* @param argument: shared semaphore
|
|
* @retval None
|
|
*/
|
|
static void SemaphoreThread2(void const *argument)
|
|
{
|
|
uint32_t count = 0;
|
|
osSemaphoreId semaphore = (osSemaphoreId) argument;
|
|
|
|
for (;;)
|
|
{
|
|
if (semaphore != NULL)
|
|
{
|
|
/* Try to obtain the semaphore */
|
|
if (osSemaphoreWait(semaphore , 0) == osOK)
|
|
{
|
|
/* Resume Thread 1 (higher priority)*/
|
|
osThreadResume(SemThread1Handle);
|
|
|
|
count = osKernelSysTick() + 5000;
|
|
|
|
/* Toggle LED2 every 200 ms for 5 seconds*/
|
|
while (count >= osKernelSysTick())
|
|
{
|
|
BSP_LED_Toggle(LED2);
|
|
|
|
osDelay(200);
|
|
}
|
|
|
|
/* Turn off LED2 */
|
|
BSP_LED_Off(LED2);
|
|
|
|
/* Release the semaphore to unblock Thread 1 (higher priority) */
|
|
osSemaphoreRelease(semaphore);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @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_ON;
|
|
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
|
|
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|