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STM32 HAL 驱动PM2.5传感器（GP2Y10AU气体检测模块）_stm32f103c8t6引脚相连的gp2y10

作者：weixin_40725706 | 2024-05-08 10:42:17

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stm32f103c8t6引脚相连的gp2y10

目录

1、简介

2、CubeMX初始化配置

2.1 基础配置

2.1.1 SYS配置

 2.1.2 RCC配置

2.2 ADC外设配置

2.3 串口外设配置

 2.4 项目生成

 3、KEIL端程序整合

3.1 串口重映射

3.2 ADC数据采集

3.3 主函数代

3.4 效果展示

1、简介

本文通过STM32F103C8T6单片机通过HAL库方式对GP2Y10AU气体检测模块进行数据的读取，并通过串口来进行显示。

2、CubeMX初始化配置

2.1 基础配置

2.1.1 SYS配置

 2.1.2 RCC配置

2.2 ADC外设配置

2.3 串口外设配置

 2.4 项目生成

 3、KEIL端程序整合

3.1 串口重映射

具体步骤：stm32(HAL库)使用printf函数打印到串口

#include "stdio.h"
  1. #ifdef __GNUC__
  2.   #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
  3. #else
  4.   #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
  5. #endif
  6.  
  7. PUTCHAR_PROTOTYPE
  8. {
  9.   HAL_UART_Transmit(&huart1,(uint8_t *)&ch,1,0xFFFF);//阻塞方式打印
  10.   return ch;
  11. }

3.2 ADC数据采集

首先在adc.c最下方添加ADC采集程序，如下所示：

  1. uint16_t ADC_IN_1(void) //ADC采集程序
  2. {
  3. 	HAL_ADC_Start(&hadc1);//开始ADC采集
  4. 	HAL_ADC_PollForConversion(&hadc1,500);//等待采集结束
  5. 	if(HAL_IS_BIT_SET(HAL_ADC_GetState(&hadc1), HAL_ADC_STATE_REG_EOC))//读取ADC完成标志位
  6. 	{
  7. 		return HAL_ADC_GetValue(&hadc1);//读出ADC数值
  8. 	}
  9. 	return 0;
  10. }

接着在adc.h中进行函数声明，如下图所示：

uint16_t ADC_IN_1(void);//ADC采集程序

3.3 主函数代码整合

首先定义变量接受ADC_IN_1（）采集数据，如下图所示：

uint8_t adc_PM2.5;

接着进行ADC采样校准，如下图所示：

HAL_ADCEx_Calibration_Start(&hadc1);//ADC采样校准

 最后进行数据打印，如下图所示：

  1. adc_mq2 = ADC_IN_1();
  2. printf("%d",adc_mq2);
  3. HAL_Delay(500);

 所用代码（便于复制）如下：

  1. uint8_t adc_mq2;
  2.  
  3. HAL_ADCEx_Calibration_Start(&hadc1);//ADC采样校准
  4.  
  5. adc_mq2 = ADC_IN_1();
  6. printf("%d",adc_mq2);
  7. HAL_Delay(200);

 main.c如下所示：

  1. /* USER CODE BEGIN Header */
  2. /**
  3.   ******************************************************************************
  4.   * @file           : main.c
  5.   * @brief          : Main program body
  6.   ******************************************************************************
  7.   * @attention
  8.   *
  9.   * Copyright (c) 2023 STMicroelectronics.
  10.   * All rights reserved.
  11.   *
  12.   * This software is licensed under terms that can be found in the LICENSE file
  13.   * in the root directory of this software component.
  14.   * If no LICENSE file comes with this software, it is provided AS-IS.
  15.   *
  16.   ******************************************************************************
  17.   */
  18. /* USER CODE END Header */
  19. /* Includes ------------------------------------------------------------------*/
  20. #include "main.h"
  21. #include "adc.h"
  22. #include "usart.h"
  23. #include "gpio.h"
  24.  
  25. /* Private includes ----------------------------------------------------------*/
  26. /* USER CODE BEGIN Includes */
  27. uint8_t adc_PM2_5;
  28.  
  29. /* USER CODE END Includes */
  30.  
  31. /* Private typedef -----------------------------------------------------------*/
  32. /* USER CODE BEGIN PTD */
  33.  
  34. /* USER CODE END PTD */
  35.  
  36. /* Private define ------------------------------------------------------------*/
  37. /* USER CODE BEGIN PD */
  38. /* USER CODE END PD */
  39.  
  40. /* Private macro -------------------------------------------------------------*/
  41. /* USER CODE BEGIN PM */
  42.  
  43. /* USER CODE END PM */
  44.  
  45. /* Private variables ---------------------------------------------------------*/
  46.  
  47. /* USER CODE BEGIN PV */
  48.  
  49. /* USER CODE END PV */
  50.  
  51. /* Private function prototypes -----------------------------------------------*/
  52. void SystemClock_Config(void);
  53. /* USER CODE BEGIN PFP */
  54.  
  55. /* USER CODE END PFP */
  56.  
  57. /* Private user code ---------------------------------------------------------*/
  58. /* USER CODE BEGIN 0 */
  59.  
  60. /* USER CODE END 0 */
  61.  
  62. /**
  63.   * @brief  The application entry point.
  64.   * @retval int
  65.   */
  66. int main(void)
  67. {
  68.   /* USER CODE BEGIN 1 */
  69.  
  70.   /* USER CODE END 1 */
  71.  
  72.   /* MCU Configuration--------------------------------------------------------*/
  73.  
  74.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  75.   HAL_Init();
  76.  
  77.   /* USER CODE BEGIN Init */
  78.  
  79.   /* USER CODE END Init */
  80.  
  81.   /* Configure the system clock */
  82.   SystemClock_Config();
  83.  
  84.   /* USER CODE BEGIN SysInit */
  85.  
  86.   /* USER CODE END SysInit */
  87.  
  88.   /* Initialize all configured peripherals */
  89.   MX_GPIO_Init();
  90.   MX_ADC1_Init();
  91.   MX_USART1_UART_Init();
  92.   /* USER CODE BEGIN 2 */
  93. HAL_ADCEx_Calibration_Start(&hadc1);//ADC采样校准
  94.  
  95.  
  96.   /* USER CODE END 2 */
  97.  
  98.   /* Infinite loop */
  99.   /* USER CODE BEGIN WHILE */
  100.   while (1)
  101.   {
  102. 		adc_PM2_5 = ADC_IN_1();
  103.    printf("%d",adc_PM2_5);
  104.    HAL_Delay(500);
  105.     /* USER CODE END WHILE */
  106.  
  107.     /* USER CODE BEGIN 3 */
  108.   }
  109.   /* USER CODE END 3 */
  110. }
  111.  
  112. /**
  113.   * @brief System Clock Configuration
  114.   * @retval None
  115.   */
  116. void SystemClock_Config(void)
  117. {
  118.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  119.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  120.   RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
  121.  
  122.   /** Initializes the RCC Oscillators according to the specified parameters
  123.   * in the RCC_OscInitTypeDef structure.
  124.   */
  125.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  126.   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  127.   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  128.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  129.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  130.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  131.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  132.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  133.   {
  134.     Error_Handler();
  135.   }
  136.  
  137.   /** Initializes the CPU, AHB and APB buses clocks
  138.   */
  139.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  140.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  141.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  142.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  143.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  144.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  145.  
  146.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  147.   {
  148.     Error_Handler();
  149.   }
  150.   PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  151.   PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
  152.   if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  153.   {
  154.     Error_Handler();
  155.   }
  156. }
  157.  
  158. /* USER CODE BEGIN 4 */
  159.  
  160. /* USER CODE END 4 */
  161.  
  162. /**
  163.   * @brief  This function is executed in case of error occurrence.
  164.   * @retval None
  165.   */
  166. void Error_Handler(void)
  167. {
  168.   /* USER CODE BEGIN Error_Handler_Debug */
  169.   /* User can add his own implementation to report the HAL error return state */
  170.   __disable_irq();
  171.   while (1)
  172.   {
  173.   }
  174.   /* USER CODE END Error_Handler_Debug */
  175. }
  176.  
  177. #ifdef  USE_FULL_ASSERT
  178. /**
  179.   * @brief  Reports the name of the source file and the source line number
  180.   *         where the assert_param error has occurred.
  181.   * @param  file: pointer to the source file name
  182.   * @param  line: assert_param error line source number
  183.   * @retval None
  184.   */
  185. void assert_failed(uint8_t *file, uint32_t line)
  186. {
  187.   /* USER CODE BEGIN 6 */
  188.   /* User can add his own implementation to report the file name and line number,
  189.      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  190.   /* USER CODE END 6 */
  191. }
  192. #endif /* USE_FULL_ASSERT */

4 硬件连接 

 从左至右依次编号为1-6（白色为1，红色为6）

1---- 5V

2---- GND

3----D0（不接）

4----GND

5----AO

6----5V

 

5 效果展示

上文如有错误，恳请各位大佬指正。

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