stm32f103zet红牛开发板STMcubeMX hal库版：02旺宝-红牛-按键演示实验

第二课  gpio里的输入

实验现象：程序运行后,按下USER1,D3亮,按下TAMPER,D2亮,按下WAKEUP,D1亮,按下USER2全灭.

电路图 

 

 

在上一个例程的基础上改。给 pa0  pa8   pc13   pd3引脚修改成出入，从原来的例程能看出是浮空，引脚已经外置上拉电阻。

 

 手动在mian.c添加对key的处理。其他位置的文件都是自动生成的 可以看出替代关系 ： GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)  vs   HAL_GPIO_ReadPin(USER1_GPIO_Port,USER1_Pin)

GPIO_ResetBits(GPIOF, GPIO_Pin_8)    vs HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_RESET)

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 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.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* 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 */

  /* USER CODE END 1 */

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

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

  /* USER CODE BEGIN Init */

  /* 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();
  /* USER CODE BEGIN 2 */
    
  /* USER CODE END 2 */

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

    /* USER CODE BEGIN 3 */
      if(HAL_GPIO_ReadPin(WAKEUP_GPIO_Port,WAKEUP_Pin)==0)          //如果PA0 = 0     WAKEUP键按下
        {
            while(HAL_GPIO_ReadPin(WAKEUP_GPIO_Port,WAKEUP_Pin)==0);
            HAL_GPIO_WritePin(LED1_GPIO_Port,LED1_Pin,GPIO_PIN_RESET);                     //D1亮
            HAL_Delay(10);
        }
    
        if(HAL_GPIO_ReadPin(TAMPER_GPIO_Port,TAMPER_Pin)==0)          //如果PA8 = 0    TAMPER键按下
        {
            while(HAL_GPIO_ReadPin(TAMPER_GPIO_Port,TAMPER_Pin)==0);
            HAL_GPIO_WritePin(LED2_GPIO_Port,LED2_Pin,GPIO_PIN_RESET);                      //D2亮
            HAL_Delay(10);
        }
        
        if(HAL_GPIO_ReadPin(USER1_GPIO_Port,USER1_Pin)==0)          //如果PC13 = 0 USER1键按下
        {
            while(HAL_GPIO_ReadPin(USER1_GPIO_Port,USER1_Pin)==0);
            HAL_GPIO_WritePin(LED3_GPIO_Port,LED3_Pin,GPIO_PIN_RESET);                      //D3亮
            HAL_Delay(10);
        }
        
        if(HAL_GPIO_ReadPin(USER2_GPIO_Port,USER2_Pin)==0)           //如果PD3 = 0     USER2键按下
        {
            while(HAL_GPIO_ReadPin(USER2_GPIO_Port,USER2_Pin)==0);
            HAL_GPIO_WritePin(GPIOF,LED1_Pin | LED2_Pin| LED3_Pin ,GPIO_PIN_SET);                   // D1.D2.D3全灭
        }
    

    

      
  }
  /* USER CODE END 3 */
}

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

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  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_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != 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 */
  __disable_irq();
  while (1)
  {
  }
  /* 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,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

实验视频 

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