/** ****************************************************************************** * @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 -----------------------------------------------*/ static void MPU_Config(void); /* 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); static void CPU_CACHE_Enable(void); /* Private functions ---------------------------------------------------------*/ /** * @brief Main program * @param None * @retval None */ int main(void) { /* Configure the MPU attributes */ MPU_Config(); /* Enable the CPU Cache */ CPU_CACHE_Enable(); /* STM32F7xx HAL library initialization: - Configure the Flash ART accelerator on ITCM interface - Configure the Systick to generate an interrupt each 1 msec - Set NVIC Group Priority to 4 - Low Level Initialization */ HAL_Init(); /* Configure the system clock to 216 Mhz */ SystemClock_Config(); /* Initialize LEDs */ 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) = 216000000 * HCLK(Hz) = 216000000 * AHB Prescaler = 1 * APB1 Prescaler = 4 * APB2 Prescaler = 2 * HSE Frequency(Hz) = 25000000 * PLL_M = 25 * PLL_N = 432 * PLL_P = 2 * PLL_Q = 9 * VDD(V) = 3.3 * Main regulator output voltage = Scale1 mode * Flash Latency(WS) = 7 * @param None * @retval None */ static void SystemClock_Config(void) { RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_OscInitTypeDef RCC_OscInitStruct; /* Enable HSE Oscillator and activate PLL with HSE as source */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.HSIState = RCC_HSI_OFF; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 25; RCC_OscInitStruct.PLL.PLLN = 432; RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; RCC_OscInitStruct.PLL.PLLQ = 9; 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_7); } /** * @brief Configure the MPU attributes * @param None * @retval None */ static void MPU_Config(void) { MPU_Region_InitTypeDef MPU_InitStruct; /* Disable the MPU */ HAL_MPU_Disable(); /* Configure the MPU as Strongly ordered for not defined regions */ MPU_InitStruct.Enable = MPU_REGION_ENABLE; MPU_InitStruct.BaseAddress = 0x00; MPU_InitStruct.Size = MPU_REGION_SIZE_4GB; MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS; MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE; MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE; MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE; MPU_InitStruct.Number = MPU_REGION_NUMBER0; MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0; MPU_InitStruct.SubRegionDisable = 0x87; MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE; HAL_MPU_ConfigRegion(&MPU_InitStruct); /* Enable the MPU */ HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT); } #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 /** * @brief CPU L1-Cache enable. * @param None * @retval None */ static void CPU_CACHE_Enable(void) { /* Enable I-Cache */ SCB_EnableICache(); /* Enable D-Cache */ SCB_EnableDCache(); }