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/**
******************************************************************************
* @file FreeRTOS/FreeRTOS_Mail/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 -----------------------------------------------------------*/
typedef struct
{ /* Mail object structure */
uint32_t var1; /* var1 is a uint32_t */
uint32_t var2; /* var2 is a uint32_t */
uint8_t var3; /* var3 is a uint8_t */
} Amail_TypeDef;
/* Private define ------------------------------------------------------------*/
#define blckqSTACK_SIZE configMINIMAL_STACK_SIZE
#define MAIL_SIZE (uint32_t) 1
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
osMailQId mailId;
uint32_t ProducerValue1 = 0, ProducerValue2 = 0;
uint8_t ProducerValue3 = 0;
uint32_t ConsumerValue1 = 0, ConsumerValue2 = 0;
uint8_t ConsumerValue3 = 0;
/* Private function prototypes -----------------------------------------------*/
/* Thread function that creates a mail and posts it on a mail queue. */
static void MailQueueProducer (const void *argument);
/* Thread function that receives mail , remove it from a mail queue and checks that
it is the expected mail. */
static void MailQueueConsumer (const void *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 LED1 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED3);
/* Create the mail queue used by the two tasks to pass the struct Amail_TypeDef */
osMailQDef(mail, MAIL_SIZE, Amail_TypeDef); /* Define mail queue */
mailId = osMailCreate(osMailQ(mail), NULL); /* create mail queue */
/* Note the producer has a lower priority than the consumer when the tasks are
spawned. */
osThreadDef(QCons, MailQueueConsumer, osPriorityBelowNormal, 0, blckqSTACK_SIZE);
osThreadCreate(osThread(QCons), NULL);
osThreadDef(QProd, MailQueueProducer, osPriorityBelowNormal, 0, blckqSTACK_SIZE);
osThreadCreate(osThread(QProd), NULL);
/* Start scheduler */
osKernelStart ();
/* We should never get here as control is now taken by the scheduler */
for(;;);
}
/**
* @brief Mail Producer Thread.
* @param argument: Not used
* @retval None
*/
static void MailQueueProducer(const void *argument)
{
Amail_TypeDef *pTMail;
for(;;)
{
pTMail = osMailAlloc(mailId, osWaitForever); /* Allocate memory */
pTMail->var1 = ProducerValue1; /* Set the mail content */
pTMail->var2 = ProducerValue2;
pTMail->var3 = ProducerValue3;
if(osMailPut(mailId, pTMail) != osOK) /* Send Mail */
{
/* Toggle LED3 to indicate error */
BSP_LED_Toggle(LED3);
}
else
{
/* Increment the variables we are going to post next time round. The
consumer will expect the numbers to follow in numerical order. */
++ProducerValue1;
ProducerValue2 += 2;
ProducerValue3 += 3;
/* Toggle LED1 to indicate a correct number received */
BSP_LED_Toggle(LED1);
osDelay(250);
}
}
}
/**
* @brief Mail Consumer Thread.
* @param argument: Not used
* @retval None
*/
static void MailQueueConsumer (const void *argument)
{
osEvent event;
Amail_TypeDef *pRMail;
for(;;)
{
/* Get the message from the queue */
event = osMailGet(mailId, osWaitForever); /* wait for mail */
if(event.status == osEventMail)
{
pRMail = event.value.p;
if((pRMail->var1 != ConsumerValue1) || (pRMail->var2 != ConsumerValue2) || (pRMail->var3 != ConsumerValue3))
{
/* Catch-up. */
ConsumerValue1 = pRMail->var1;
ConsumerValue2 = pRMail->var2;
ConsumerValue3 = pRMail->var3;
/* Toggle LED3 to indicate error */
BSP_LED_Toggle(LED3);
}
else
{
/* Calculate values we expect to remove from the mail queue next time
round. */
++ConsumerValue1;
ConsumerValue2 += 2;
ConsumerValue3 += 3;
}
osMailFree(mailId, pRMail); /* free memory allocated for mail */
}
}
}
/**
* @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