STM32CubuIDE配置串口空闲中断+DMA发送接收

jiangyy

可以参照下面网站：
https://www.liangzl.com/get-article-detail-153117.html

jiangyy

/*
* bsp_uart1_dma2.c
*
*  Created on: Aug 20, 2020
*      Author: jiangyuanyuan
*/

#include "bsp_uart1_dma2.h"

void HAL_USART1_IDLECallback(UART_HandleTypeDef *huart)
{
        uint32_t temp;

        if((__HAL_UART_GET_FLAG(huart,UART_FLAG_IDLE) != RESET))
        {
                HAL_UART_DMAStop(&huart1);
                __HAL_UART_CLEAR_IDLEFLAG(&huart1);
                temp = huart1.hdmarx->Instance->NDTR;
                UsartType1.rx_len =  RECEIVELEN - temp;
                UsartType1.receive_flag=1;
                HAL_UART_Receive_DMA(&huart1,UsartType1.usartDMA_rxBuf,RECEIVELEN);

                if(UsartType1.receive_flag)//如果产生了空闲中断
                {
                        UsartType1.receive_flag=0;//清零标记
                        Usart1SendData_DMA(UsartType1.usartDMA_rxBuf,UsartType1.rx_len);//串口打印收到的数据。
                }
        }
}

//DMA发送函数
void Usart1SendData_DMA(uint8_t *pdata, uint16_t Length)
{
        while(UsartType1.dmaSend_flag == USART_DMA_SENDING);
        UsartType1.dmaSend_flag = USART_DMA_SENDING;
        HAL_UART_Transmit_DMA(&huart1, pdata, Length);
}

//DMA发送完成中断回调函数
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
         __HAL_DMA_DISABLE(huart->hdmatx);
        UsartType1.dmaSend_flag = USART_DMA_SENDOVER;
}

/*
* bsp_uart1_dma2.h
*
*  Created on: Aug 20, 2020
*      Author: jiangyuanyuan
*/

#ifndef INC_BSP_UART1_DMA_H_
#define INC_BSP_UART1_DMA_H_
#include "usart.h"
#include "stm32f4xx_hal.h"

#define RECEIVELEN 1024      //长度根据应用自定义
#define USART_DMA_SENDING 1  //发送未完成
#define USART_DMA_SENDOVER 0 //发送完成

typedef struct
{
uint8_t receive_flag:1;//空闲接收标记
uint8_t dmaSend_flag:1;//发送完成标记
uint16_t rx_len;//接收长度
uint8_t usartDMA_rxBuf[RECEIVELEN];//DMA接收缓存
}USART_RECEIVETYPE;

extern USART_RECEIVETYPE UsartType1;
void HAL_USART1_IDLECallback(UART_HandleTypeDef *huart);
void Usart1SendData_DMA(uint8_t *pdata, uint16_t Length);

#endif /* INC_BSP_UART1_DMA_H_ */

jiangyy

/**
  ******************************************************************************
  * File Name          : USART.c
  * Description        : This file provides code for the configuration
  *                      of the USART instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "usart.h"

/* USER CODE BEGIN 0 */
USART_RECEIVETYPE UsartType1;
/* USER CODE END 0 */

UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_rx;
DMA_HandleTypeDef hdma_usart1_tx;

/* USART1 init function */

void MX_USART1_UART_Init(void)
{

  huart1.Instance = USART1;
  huart1.Init.BaudRate = 115200;
  huart1.Init.WordLength = UART_WORDLENGTH_8B;
  huart1.Init.StopBits = UART_STOPBITS_1;
  huart1.Init.Parity = UART_PARITY_NONE;
  huart1.Init.Mode = UART_MODE_TX_RX;
  huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart1.Init.OverSampling = UART_OVERSAMPLING_16;
  if (HAL_UART_Init(&huart1) != HAL_OK)
  {
    Error_Handler();
  }

}

void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspInit 0 */

  /* USER CODE END USART1_MspInit 0 */
    /* USART1 clock enable */
    __HAL_RCC_USART1_CLK_ENABLE();

    __HAL_RCC_GPIOA_CLK_ENABLE();
    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLUP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

    /* USART1 DMA Init */
    /* USART1_RX Init */
    hdma_usart1_rx.Instance = DMA2_Stream2;
    hdma_usart1_rx.Init.Channel = DMA_CHANNEL_4;
    hdma_usart1_rx.Init.Direction = DMA_PERIPH_TO_MEMORY;
    hdma_usart1_rx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart1_rx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart1_rx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart1_rx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart1_rx.Init.Mode = DMA_CIRCULAR;
    hdma_usart1_rx.Init.Priority = DMA_PRIORITY_LOW;
    hdma_usart1_rx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_usart1_rx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmarx,hdma_usart1_rx);

    /* USART1_TX Init */
    hdma_usart1_tx.Instance = DMA2_Stream7;
    hdma_usart1_tx.Init.Channel = DMA_CHANNEL_4;
    hdma_usart1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
    hdma_usart1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
    hdma_usart1_tx.Init.MemInc = DMA_MINC_ENABLE;
    hdma_usart1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
    hdma_usart1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
    hdma_usart1_tx.Init.Mode = DMA_NORMAL;
    hdma_usart1_tx.Init.Priority = DMA_PRIORITY_LOW;
    hdma_usart1_tx.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
    if (HAL_DMA_Init(&hdma_usart1_tx) != HAL_OK)
    {
      Error_Handler();
    }

    __HAL_LINKDMA(uartHandle,hdmatx,hdma_usart1_tx);

    /* USART1 interrupt Init */
    HAL_NVIC_SetPriority(USART1_IRQn, 3, 0);
    HAL_NVIC_EnableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspInit 1 */

  /* USER CODE END USART1_MspInit 1 */
  }
}

void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
{

  if(uartHandle->Instance==USART1)
  {
  /* USER CODE BEGIN USART1_MspDeInit 0 */

  /* USER CODE END USART1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_USART1_CLK_DISABLE();

    /**USART1 GPIO Configuration
    PA9     ------> USART1_TX
    PA10     ------> USART1_RX
    */
    HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9|GPIO_PIN_10);

    /* USART1 DMA DeInit */
    HAL_DMA_DeInit(uartHandle->hdmarx);
    HAL_DMA_DeInit(uartHandle->hdmatx);

    /* USART1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(USART1_IRQn);
  /* USER CODE BEGIN USART1_MspDeInit 1 */

  /* USER CODE END USART1_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */
#ifdef __GNUC__

#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)

PUTCHAR_PROTOTYPE
{

  HAL_UART_Transmit(&huart1, (uint8_t*)&ch, 1, HAL_MAX_DELAY);
  return ch;
}
#endif
/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

jiangyy

/**
  ******************************************************************************
  * File Name          : USART.h
  * Description        : This file provides code for the configuration
  *                      of the USART instances.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __usart_H
#define __usart_H
#ifdef __cplusplus
extern "C" {
#endif

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* USER CODE BEGIN Includes */
#include "bsp_uart1_dma2.h"
/* USER CODE END Includes */

extern UART_HandleTypeDef huart1;

/* USER CODE BEGIN Private defines */

/* USER CODE END Private defines */

void MX_USART1_UART_Init(void);

/* USER CODE BEGIN Prototypes */

/* USER CODE END Prototypes */

#ifdef __cplusplus
}
#endif
#endif /*__ usart_H */

/**
  * @}
  */

/**
  * @}
  */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

jiangyy

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    stm32f4xx_it.c
  * @brief   Interrupt Service Routines.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_it.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "bsp_uart1_dma2.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN TD */

/* USER CODE END TD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/* External variables --------------------------------------------------------*/
extern TIM_HandleTypeDef htim3;
extern DMA_HandleTypeDef hdma_usart1_tx;
extern UART_HandleTypeDef huart1;
/* USER CODE BEGIN EV */

/* USER CODE END EV */

/******************************************************************************/
/*           Cortex-M4 Processor Interruption and Exception Handlers          */
/******************************************************************************/
/**
  * @brief This function handles Non maskable interrupt.
  */
void NMI_Handler(void)
{
  /* USER CODE BEGIN NonMaskableInt_IRQn 0 */

  /* USER CODE END NonMaskableInt_IRQn 0 */
  /* USER CODE BEGIN NonMaskableInt_IRQn 1 */

  /* USER CODE END NonMaskableInt_IRQn 1 */
}

/**
  * @brief This function handles Hard fault interrupt.
  */
void HardFault_Handler(void)
{
  /* USER CODE BEGIN HardFault_IRQn 0 */

  /* USER CODE END HardFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_HardFault_IRQn 0 */
    /* USER CODE END W1_HardFault_IRQn 0 */
  }
}

/**
  * @brief This function handles Memory management fault.
  */
void MemManage_Handler(void)
{
  /* USER CODE BEGIN MemoryManagement_IRQn 0 */

  /* USER CODE END MemoryManagement_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_MemoryManagement_IRQn 0 */
    /* USER CODE END W1_MemoryManagement_IRQn 0 */
  }
}

/**
  * @brief This function handles Pre-fetch fault, memory access fault.
  */
void BusFault_Handler(void)
{
  /* USER CODE BEGIN BusFault_IRQn 0 */

  /* USER CODE END BusFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_BusFault_IRQn 0 */
    /* USER CODE END W1_BusFault_IRQn 0 */
  }
}

/**
  * @brief This function handles Undefined instruction or illegal state.
  */
void UsageFault_Handler(void)
{
  /* USER CODE BEGIN UsageFault_IRQn 0 */

  /* USER CODE END UsageFault_IRQn 0 */
  while (1)
  {
    /* USER CODE BEGIN W1_UsageFault_IRQn 0 */
    /* USER CODE END W1_UsageFault_IRQn 0 */
  }
}

/**
  * @brief This function handles System service call via SWI instruction.
  */
void SVC_Handler(void)
{
  /* USER CODE BEGIN SVCall_IRQn 0 */

  /* USER CODE END SVCall_IRQn 0 */
  /* USER CODE BEGIN SVCall_IRQn 1 */

  /* USER CODE END SVCall_IRQn 1 */
}

/**
  * @brief This function handles Debug monitor.
  */
void DebugMon_Handler(void)
{
  /* USER CODE BEGIN DebugMonitor_IRQn 0 */

  /* USER CODE END DebugMonitor_IRQn 0 */
  /* USER CODE BEGIN DebugMonitor_IRQn 1 */

  /* USER CODE END DebugMonitor_IRQn 1 */
}

/**
  * @brief This function handles Pendable request for system service.
  */
void PendSV_Handler(void)
{
  /* USER CODE BEGIN PendSV_IRQn 0 */

  /* USER CODE END PendSV_IRQn 0 */
  /* USER CODE BEGIN PendSV_IRQn 1 */

  /* USER CODE END PendSV_IRQn 1 */
}

/**
  * @brief This function handles System tick timer.
  */
void SysTick_Handler(void)
{
  /* USER CODE BEGIN SysTick_IRQn 0 */

  /* USER CODE END SysTick_IRQn 0 */
  HAL_IncTick();
  /* USER CODE BEGIN SysTick_IRQn 1 */

  /* USER CODE END SysTick_IRQn 1 */
}

/******************************************************************************/
/* STM32F4xx Peripheral Interrupt Handlers                                    */
/* Add here the Interrupt Handlers for the used peripherals.                  */
/* For the available peripheral interrupt handler names,                      */
/* please refer to the startup file (startup_stm32f4xx.s).                    */
/******************************************************************************/

/**
  * @brief This function handles EXTI line4 interrupt.
  */
void EXTI4_IRQHandler(void)
{
  /* USER CODE BEGIN EXTI4_IRQn 0 */

  /* USER CODE END EXTI4_IRQn 0 */
  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_4);
  /* USER CODE BEGIN EXTI4_IRQn 1 */

  /* USER CODE END EXTI4_IRQn 1 */
}

/**
  * @brief This function handles TIM3 global interrupt.
  */
void TIM3_IRQHandler(void)
{
  /* USER CODE BEGIN TIM3_IRQn 0 */

  /* USER CODE END TIM3_IRQn 0 */
  HAL_TIM_IRQHandler(&htim3);
  /* USER CODE BEGIN TIM3_IRQn 1 */

  /* USER CODE END TIM3_IRQn 1 */
}

/**
  * @brief This function handles USART1 global interrupt.
  */
void USART1_IRQHandler(void)
{
  /* USER CODE BEGIN USART1_IRQn 0 */
  HAL_USART1_IDLECallback(&huart1);
  /* USER CODE END USART1_IRQn 0 */
  HAL_UART_IRQHandler(&huart1);
  /* USER CODE BEGIN USART1_IRQn 1 */

  /* USER CODE END USART1_IRQn 1 */
}

/**
  * @brief This function handles DMA2 stream7 global interrupt.
  */
void DMA2_Stream7_IRQHandler(void)
{
  /* USER CODE BEGIN DMA2_Stream7_IRQn 0 */

  /* USER CODE END DMA2_Stream7_IRQn 0 */
  HAL_DMA_IRQHandler(&hdma_usart1_tx);
  /* USER CODE BEGIN DMA2_Stream7_IRQn 1 */

  /* USER CODE END DMA2_Stream7_IRQn 1 */
}

/* USER CODE BEGIN 1 */

/* USER CODE END 1 */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

jiangyy

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2020 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "bsp_led.h"
#include "bsp_key.h"
#include "bsp_delay.h"
#include "bsp_tim3.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
        float cnt = 0.00;
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */
  delay_init(168);
  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_DMA_Init();
  MX_TIM3_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
  HAL_TIM_Base_Start_IT(&htim3);
  HAL_UART_Receive_DMA(&huart1, UsartType1.usartDMA_rxBuf, RECEIVELEN);
  __HAL_UART_ENABLE_IT(&huart1, UART_IT_IDLE);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
          cnt++;
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
         delay_ms(1000);
//         printf("output:%.2f\r\n",cnt);
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 168;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |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;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */

  /* USER CODE END Error_Handler_Debug */
}

#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 CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

jiangyy

新增延时函数：/*
* bsp_delay.c
*
*  Created on: Aug 19, 2020
*      Author: jiangyuanyuan
*/

#include "bsp_delay.h"

//初始化延迟函数
//当使用ucos的时候,此函数会初始化ucos的时钟节拍
//SYSTICK的时钟固定为AHB时钟
//SYSCLK:系统时钟频率

static uint32_t fac_us=0;                                                        //us延时倍乘数

void delay_init(uint8_t SYSCLK)
{
    HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);//SysTick频率为HCLK
        fac_us=SYSCLK;                                                //不论是否使用OS,fac_us都需要使用
}

//延时nus
//nus为要延时的us数.
//nus:0~190887435(最大值即2^32/fac_us@fac_us=22.5)
void delay_us(uint32_t nus)
{
        uint32_t ticks;
        uint32_t told,tnow,tcnt=0;
        uint32_t reload=SysTick->LOAD;                                //LOAD的值
        ticks=nus*fac_us;                                                 //需要的节拍数
        told=SysTick->VAL;                                        //刚进入时的计数器值
        while(1)
        {
                tnow=SysTick->VAL;
                if(tnow!=told)
                {
                        if(tnow<told)tcnt+=told-tnow;        //这里注意一下SYSTICK是一个递减的计数器就可以了.
                        else tcnt+=reload-tnow+told;
                        told=tnow;
                        if(tcnt>=ticks)break;                        //时间超过/等于要延迟的时间,则退出.
                }
        };
}

//延时nms
//nms:要延时的ms数
void delay_ms(uint16_t nms)
{
        uint32_t i;
        for(i=0;i<nms;i++) delay_us(1000);
}


/****************************************************************************
* 名                称: void Delay_us(u32 nus)
* 功                能:延时nus
* 入口参数:药延时的微秒数
* 返回参数:无
* 说                明:nus得值,不要大于798915us
****************************************************************************/
void Delay_us(uint32_t nus)
{
        uint32_t i,j;
  for(i = 0; i < nus; i++)
  {
                j=10;   //change it  for timing adjustment
                while(j--)
                {
                        __NOP();  // nop's may be added or removed for timing
                }
  }
}

void Delay_ms(uint16_t nms)
{
        uint16_t i,j,k;
        for(i = 0; i < nms; i++)
        {
                for(j = 0; j < 1000; j++)
                {
                        k=10;   //change it  for timing adjustment
                        while(k--)
                        {
                                __NOP();  // nop's may be added or removed for timing
                        }
                }
        }
}

void delay_Xms(uint16_t nms,uint8_t Cnt)
{
        uint8_t ucCnt = 0;
        for(;ucCnt<Cnt;ucCnt++)
                delay_ms(nms);
}



头文件：
/*
* bsp_delay.h
*
*  Created on: Aug 19, 2020
*      Author: jiangyuanyuan
*/


#ifndef INC_BSP_DELAY_H_
#define INC_BSP_DELAY_H_

#include "gpio.h"
#include "stm32f4xx_hal.h"
#include "bsp_delay.h"

void delay_init(uint8_t SYSCLK);
void delay_ms(uint16_t nms);
void delay_us(uint32_t nus);
void Delay_us(uint32_t nus);
void Delay_ms(uint16_t nms);
#endif /* INC_BSP_delay_H_ */

jiangyy

https://blog.csdn.net/tao4758248 ... 6%E4%BB%A3%E7%A0%81

jiangyy

/*
* bsp_sys.h
*
*  Created on: Aug 24, 2020
*      Author: jiangyuanyuan
*/

#ifndef INC_BSP_SYS_H_
#define INC_BSP_SYS_H_
#include "stm32f4xx_hal.h"

//位带操作,实现51类似的GPIO控制功能
//具体实现思想,参考<<CM3权威指南>>第五章(87页~92页).M4同M3类似,只是寄存器地址变了.
//IO口操作宏定义

typedef uint8_t                u8;
typedef uint16_t        u16;
typedef uint32_t        u32;

typedef int8_t                vu8;
typedef int16_t                vu16;
typedef int32_t                vu32;

#define BITBAND(addr, bitnum) ((addr & 0xF0000000)+0x2000000+((addr &0xFFFFF)<<5)+(bitnum<<2))
#define MEM_ADDR(addr)  *((volatile unsigned long  *)(addr))
#define BIT_ADDR(addr, bitnum)   MEM_ADDR(BITBAND(addr, bitnum))
//IO口地址映射
#define GPIOA_ODR_Addr    (GPIOA_BASE+20) //0x40020014
#define GPIOB_ODR_Addr    (GPIOB_BASE+20) //0x40020414
#define GPIOC_ODR_Addr    (GPIOC_BASE+20) //0x40020814
#define GPIOD_ODR_Addr    (GPIOD_BASE+20) //0x40020C14
#define GPIOE_ODR_Addr    (GPIOE_BASE+20) //0x40021014
#define GPIOF_ODR_Addr    (GPIOF_BASE+20) //0x40021414
#define GPIOG_ODR_Addr    (GPIOG_BASE+20) //0x40021814
#define GPIOH_ODR_Addr    (GPIOH_BASE+20) //0x40021C14
#define GPIOI_ODR_Addr    (GPIOI_BASE+20) //0x40022014

#define GPIOA_IDR_Addr    (GPIOA_BASE+16) //0x40020010
#define GPIOB_IDR_Addr    (GPIOB_BASE+16) //0x40020410
#define GPIOC_IDR_Addr    (GPIOC_BASE+16) //0x40020810
#define GPIOD_IDR_Addr    (GPIOD_BASE+16) //0x40020C10
#define GPIOE_IDR_Addr    (GPIOE_BASE+16) //0x40021010
#define GPIOF_IDR_Addr    (GPIOF_BASE+16) //0x40021410
#define GPIOG_IDR_Addr    (GPIOG_BASE+16) //0x40021810
#define GPIOH_IDR_Addr    (GPIOH_BASE+16) //0x40021C10
#define GPIOI_IDR_Addr    (GPIOI_BASE+16) //0x40022010

//IO口操作,只对单一的IO口!
//确保n的值小于16!
#define PAout(n)   BIT_ADDR(GPIOA_ODR_Addr,n)  //输出
#define PAin(n)    BIT_ADDR(GPIOA_IDR_Addr,n)  //输入

#define PBout(n)   BIT_ADDR(GPIOB_ODR_Addr,n)  //输出
#define PBin(n)    BIT_ADDR(GPIOB_IDR_Addr,n)  //输入

#define PCout(n)   BIT_ADDR(GPIOC_ODR_Addr,n)  //输出
#define PCin(n)    BIT_ADDR(GPIOC_IDR_Addr,n)  //输入

#define PDout(n)   BIT_ADDR(GPIOD_ODR_Addr,n)  //输出
#define PDin(n)    BIT_ADDR(GPIOD_IDR_Addr,n)  //输入

#define PEout(n)   BIT_ADDR(GPIOE_ODR_Addr,n)  //输出
#define PEin(n)    BIT_ADDR(GPIOE_IDR_Addr,n)  //输入

#define PFout(n)   BIT_ADDR(GPIOF_ODR_Addr,n)  //输出
#define PFin(n)    BIT_ADDR(GPIOF_IDR_Addr,n)  //输入

#define PGout(n)   BIT_ADDR(GPIOG_ODR_Addr,n)  //输出
#define PGin(n)    BIT_ADDR(GPIOG_IDR_Addr,n)  //输入

#define PHout(n)   BIT_ADDR(GPIOH_ODR_Addr,n)  //输出
#define PHin(n)    BIT_ADDR(GPIOH_IDR_Addr,n)  //输入

#define PIout(n)   BIT_ADDR(GPIOI_ODR_Addr,n)  //输出
#define PIin(n)    BIT_ADDR(GPIOI_IDR_Addr,n)  //输入

#endif /* INC_BSP_SYS_H_ */