mirror of
https://github.com/STMicroelectronics/STM32CubeF7.git
synced 2025-05-05 19:30:14 +08:00
357 lines
11 KiB
C
357 lines
11 KiB
C
/**
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******************************************************************************
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* @file FreeRTOS/FreeRTOS_LowPower/Src/main.c
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* @author MCD Application Team
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* @brief Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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#include "cmsis_os.h"
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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#define blckqSTACK_SIZE configMINIMAL_STACK_SIZE
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#define QUEUE_SIZE (uint32_t) 1
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/* Private variables ---------------------------------------------------------*/
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osMessageQId osQueue;
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/* The number of items the queue can hold. This is 1 as the Rx task will
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remove items as they are added so the Tx task should always find the queue
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empty. */
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#define QUEUE_LENGTH (1)
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/* The rate at which the Tx task sends to the queue. */
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#define TX_DELAY (500)
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/* The value that is sent from the Tx task to the Rx task on the queue. */
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#define QUEUED_VALUE (100)
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/* The length of time the LED will remain on for. It is on just long enough
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to be able to see with the human eye so as not to distort the power readings too
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much. */
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#define LED_TOGGLE_DELAY (20)
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/* Private function prototypes -----------------------------------------------*/
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static void MPU_Config(void);
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static void QueueReceiveThread(const void *argument);
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static void QueueSendThread(const void *argument);
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static void GPIO_ConfigAN(void);
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static void SystemClock_Config(void);
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static void CPU_CACHE_Enable(void);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/* Configure the MPU attributes */
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MPU_Config();
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/* Enable the CPU Cache */
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CPU_CACHE_Enable();
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/* STM32F7xx HAL library initialization:
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- Configure the Flash ART accelerator on ITCM interface
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- Configure the Systick to generate an interrupt each 1 msec
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- Set NVIC Group Priority to 4
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- Low Level Initialization
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*/
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HAL_Init();
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/* Configure the system clock to 216 Mhz */
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SystemClock_Config();
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/* Configure GPIO's to AN to reduce power consumption */
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GPIO_ConfigAN();
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/* Configure LED1 */
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BSP_LED_Init(LED1);
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/* Create the queue used by the two threads */
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osMessageQDef(osqueue, QUEUE_LENGTH, uint16_t);
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osQueue = osMessageCreate (osMessageQ(osqueue), NULL);
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/* Note the Tx has a lower priority than the Rx when the threads are
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spawned. */
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osThreadDef(RxThread, QueueReceiveThread, osPriorityNormal, 0, configMINIMAL_STACK_SIZE);
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osThreadCreate(osThread(RxThread), NULL);
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osThreadDef(TxThread, QueueSendThread, osPriorityBelowNormal, 0, configMINIMAL_STACK_SIZE);
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osThreadCreate(osThread(TxThread), NULL);
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/* Start scheduler */
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osKernelStart();
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/* We should never get here as control is now taken by the scheduler */
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for(;;);
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}
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/**
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* @brief Message Queue Producer Thread.
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* @param argument: Not used
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* @retval None
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*/
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static void QueueSendThread (const void *argument)
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{
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for(;;)
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{
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/* Place this thread into the blocked state until it is time to run again.
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The kernel will place the MCU into the Retention low power sleep state
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when the idle thread next runs. */
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osDelay(TX_DELAY);
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/* Send to the queue - causing the queue receive thread to flash its LED.
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It should not be necessary to block on the queue send because the Rx
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thread will already have removed the last queued item. */
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osMessagePut(osQueue, (uint32_t)QUEUED_VALUE, 0);
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}
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}
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/**
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* @brief Message Queue Consumer Thread.
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* @param argument: Not used
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* @retval None
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*/
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static void QueueReceiveThread(const void *argument)
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{
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osEvent event;
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for(;;)
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{
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/* Wait until something arrives in the queue. */
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event = osMessageGet(osQueue, osWaitForever);
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/* To get here something must have arrived, but is it the expected
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value? If it is, turn the LED on for a short while. */
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if(event.status == osEventMessage)
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{
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if(event.value.v == QUEUED_VALUE)
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{
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BSP_LED_On(LED1);
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osDelay(LED_TOGGLE_DELAY);
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BSP_LED_Off(LED1);
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}
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}
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}
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}
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/**
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* @brief Pre Sleep Processing
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* @param ulExpectedIdleTime: Expected time in idle state
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* @retval None
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*/
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void PreSleepProcessing(uint32_t * ulExpectedIdleTime)
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{
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/* Called by the kernel before it places the MCU into a sleep mode because
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configPRE_SLEEP_PROCESSING() is #defined to PreSleepProcessing().
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NOTE: Additional actions can be taken here to get the power consumption
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even lower. For example, peripherals can be turned off here, and then back
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on again in the post sleep processing function. For maximum power saving
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ensure all unused pins are in their lowest power state. */
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/* Disable the peripheral clock during Low Power (Sleep) mode.*/
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__HAL_RCC_GPIOG_CLK_SLEEP_DISABLE();
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/*
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(*ulExpectedIdleTime) is set to 0 to indicate that PreSleepProcessing contains
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its own wait for interrupt or wait for event instruction and so the kernel vPortSuppressTicksAndSleep
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function does not need to execute the wfi instruction
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*/
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*ulExpectedIdleTime = 0;
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/*Enter to sleep Mode using the HAL function HAL_PWR_EnterSLEEPMode with WFI instruction*/
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HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
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}
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/**
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* @brief Post Sleep Processing
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* @param ulExpectedIdleTime: Not used
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* @retval None
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*/
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void PostSleepProcessing(uint32_t * ulExpectedIdleTime)
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{
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/* Called by the kernel when the MCU exits a sleep mode because
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configPOST_SLEEP_PROCESSING is #defined to PostSleepProcessing(). */
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/* Avoid compiler warnings about the unused parameter. */
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(void) ulExpectedIdleTime;
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}
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/**
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* @brief Configure all GPIO's to AN to reduce the power consumption
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* @param None
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* @retval None
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*/
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static void GPIO_ConfigAN(void)
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{
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GPIO_InitTypeDef GPIO_InitStruct;
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/* Configure all GPIO as analog to reduce current consumption on non used IOs */
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/* Enable GPIOs clock */
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOD_CLK_ENABLE();
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__HAL_RCC_GPIOE_CLK_ENABLE();
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__HAL_RCC_GPIOF_CLK_ENABLE();
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__HAL_RCC_GPIOG_CLK_ENABLE();
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__HAL_RCC_GPIOH_CLK_ENABLE();
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__HAL_RCC_GPIOI_CLK_ENABLE();
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GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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GPIO_InitStruct.Pin = GPIO_PIN_All;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOF, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOI, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
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/* Disable GPIOs clock */
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__HAL_RCC_GPIOA_CLK_DISABLE();
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__HAL_RCC_GPIOB_CLK_DISABLE();
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__HAL_RCC_GPIOC_CLK_DISABLE();
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__HAL_RCC_GPIOD_CLK_DISABLE();
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__HAL_RCC_GPIOE_CLK_DISABLE();
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__HAL_RCC_GPIOF_CLK_DISABLE();
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__HAL_RCC_GPIOG_CLK_DISABLE();
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__HAL_RCC_GPIOH_CLK_DISABLE();
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__HAL_RCC_GPIOI_CLK_DISABLE();
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}
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/**
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* @brief System Clock Configuration
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* The system Clock is configured as follow :
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 216000000
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* HCLK(Hz) = 216000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 25
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* PLL_N = 432
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* PLL_P = 2
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* PLL_Q = 9
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 7
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* @param None
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* @retval None
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*/
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static void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* Enable HSE Oscillator and activate PLL with HSE as source */
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSIState = RCC_HSI_OFF;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 25;
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RCC_OscInitStruct.PLL.PLLN = 432;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 9;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
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clocks dividers */
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
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}
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/**
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* @brief Configure the MPU attributes
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* @param None
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* @retval None
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*/
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static void MPU_Config(void)
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{
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MPU_Region_InitTypeDef MPU_InitStruct;
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/* Disable the MPU */
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HAL_MPU_Disable();
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/* Configure the MPU as Strongly ordered for not defined regions */
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MPU_InitStruct.Enable = MPU_REGION_ENABLE;
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MPU_InitStruct.BaseAddress = 0x00;
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MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
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MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
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MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
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MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
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MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
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MPU_InitStruct.Number = MPU_REGION_NUMBER0;
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MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
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MPU_InitStruct.SubRegionDisable = 0x87;
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MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;
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HAL_MPU_ConfigRegion(&MPU_InitStruct);
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/* Enable the MPU */
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HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{}
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}
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#endif
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/**
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* @brief CPU L1-Cache enable.
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* @param None
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* @retval None
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*/
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static void CPU_CACHE_Enable(void)
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{
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/* Enable I-Cache */
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SCB_EnableICache();
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/* Enable D-Cache */
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SCB_EnableDCache();
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}
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