火焰传感器(STM32F103C8T6+CubeMX)
·
下方有完整代码,谁不给谁耍流氓
目录
水:快速实现
硬件环境(接线图)
STM32F103C8T6 + 火焰传感器模块

Keil uVision5 +STM32CubeMX(Version 6.8.1)
代码
分别建立相关的.c.h,复制粘贴可用
代码都是基于Cubemx和豆包AI,0基础不会复制的直接看下方视频即可
代码1:adc.c
(CBUE生成)
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file adc.c
* @brief This file provides code for the configuration
* of the ADC instances.
******************************************************************************
* @attention
*
* Copyright (c) 2026 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 "adc.h"
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
ADC_HandleTypeDef hadc1;
/* ADC1 init function */
void MX_ADC1_Init(void)
{
/* USER CODE BEGIN ADC1_Init 0 */
/* USER CODE END ADC1_Init 0 */
ADC_ChannelConfTypeDef sConfig = {0};
/* USER CODE BEGIN ADC1_Init 1 */
/* USER CODE END ADC1_Init 1 */
/** Common config
*/
hadc1.Instance = ADC1;
hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
hadc1.Init.ContinuousConvMode = DISABLE;
hadc1.Init.DiscontinuousConvMode = DISABLE;
hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
hadc1.Init.NbrOfConversion = 1;
if (HAL_ADC_Init(&hadc1) != HAL_OK)
{
Error_Handler();
}
/** Configure Regular Channel
*/
sConfig.Channel = ADC_CHANNEL_8;
sConfig.Rank = ADC_REGULAR_RANK_1;
sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN ADC1_Init 2 */
/* USER CODE END ADC1_Init 2 */
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspInit 0 */
/* USER CODE END ADC1_MspInit 0 */
/* ADC1 clock enable */
__HAL_RCC_ADC1_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
/**ADC1 GPIO Configuration
PB0 ------> ADC1_IN8
*/
GPIO_InitStruct.Pin = GPIO_PIN_0;
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* USER CODE BEGIN ADC1_MspInit 1 */
/* USER CODE END ADC1_MspInit 1 */
}
}
void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
if(adcHandle->Instance==ADC1)
{
/* USER CODE BEGIN ADC1_MspDeInit 0 */
/* USER CODE END ADC1_MspDeInit 0 */
/* Peripheral clock disable */
__HAL_RCC_ADC1_CLK_DISABLE();
/**ADC1 GPIO Configuration
PB0 ------> ADC1_IN8
*/
HAL_GPIO_DeInit(GPIOB, GPIO_PIN_0);
/* USER CODE BEGIN ADC1_MspDeInit 1 */
/* USER CODE END ADC1_MspDeInit 1 */
}
}
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
代码2:adc_flame_sensor.c
需求明确,AI生成的,视频里呈现过
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : adc_flame_sensor.c
* @brief : 火焰传感器ADC读取实现
******************************************************************************
*/
/* USER CODE END Header */
#include "adc_flame_sensor.h"
/**
* @brief 读取火焰传感器ADC原始值
* @note ADC1通道8(PB0),12位分辨率(0-4095)
* @retval ADC原始值(0-4095)
*/
uint16_t FlameSensor_Read_ADC_Value(void)
{
uint16_t adc_value = 0;
// 启动ADC转换
if (HAL_ADC_Start(&hadc1) != HAL_OK)
{
Error_Handler(); // 转换启动失败,进入错误处理
}
// 等待转换完成(超时时间10ms)
if (HAL_ADC_PollForConversion(&hadc1, 10) == HAL_OK)
{
// 读取ADC转换结果
adc_value = HAL_ADC_GetValue(&hadc1);
}
// 停止ADC转换
HAL_ADC_Stop(&hadc1);
return adc_value;
}
/**
* @brief 读取火焰传感器多次采样平均值
* @note 多次采样降低噪声干扰
* @param sample_times: 采样次数(建议10-50次)
* @retval 采样平均值(0-4095)
*/
uint16_t FlameSensor_Read_Average_Value(uint8_t sample_times)
{
uint32_t sum = 0;
uint8_t i = 0;
// 采样次数校验(至少1次)
if (sample_times == 0)
{
sample_times = 1;
}
// 多次采样求和
for (i = 0; i < sample_times; i++)
{
sum += FlameSensor_Read_ADC_Value();
HAL_Delay(1); // 每次采样间隔1ms,避免连续采样噪声
}
// 返回平均值
return (uint16_t)(sum / sample_times);
}
/**
* @brief 将ADC值转换为电压值
* @note STM32F103 ADC参考电压默认3.3V,12位分辨率
* @param adc_value: ADC原始值(0-4095)
* @retval 电压值(单位:mV,范围0-3300)
*/
uint32_t FlameSensor_ADC_To_Voltage(uint16_t adc_value)
{
// 计算公式:电压(mV) = ADC值 * 3300 / 4095
return (uint32_t)adc_value * 3300 / 4095;
}
代码3:adc_flame_sensor.h
需求明确,AI生成
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : adc_flame_sensor.h
* @brief : 火焰传感器ADC读取相关函数声明
******************************************************************************
*/
/* USER CODE END Header */
#ifndef __ADC_FLAME_SENSOR_H__
#define __ADC_FLAME_SENSOR_H__
#include "main.h"
#include "adc.h"
/* 函数声明 */
// 读取火焰传感器ADC原始值(0-4095)
uint16_t FlameSensor_Read_ADC_Value(void);
// 读取火焰传感器平均值(多次采样,提高稳定性)
uint16_t FlameSensor_Read_Average_Value(uint8_t sample_times);
// 将ADC值转换为电压值(单位:mV)
uint32_t FlameSensor_ADC_To_Voltage(uint16_t adc_value);
#endif /* __ADC_FLAME_SENSOR_H__ */
代码4:main.c
为了方便想快速复制粘贴的同志看,这里进行了一定删减
提速的小伙伴只需关心定义的变量和while里的内容即可
我这里用的SEGGER_RTT打印数据
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "adc_flame_sensor.h" // 引入火焰传感器头文件
#include "SEGGER_RTT.h" // SEGGER RTT头文件
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
uint16_t flame_adc_value = 0; // 火焰传感器ADC值
uint32_t flame_voltage = 0; // 火焰传感器电压值
void SystemClock_Config(void);
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();
MX_ADC1_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
flame_adc_value = FlameSensor_Read_Average_Value(20);
// 转换为电压值
flame_voltage = FlameSensor_ADC_To_Voltage(flame_adc_value);
HAL_Delay(200); // 200ms读取一次,降低CPU占用
SEGGER_RTT_printf(0, "A:%d,B:%d mV\r\n", flame_adc_value, flame_voltage);
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
现象:
我在附近点了个打火机,发现数值增大一段,符合电路的实际预期

水水:介绍+原理
火焰传感器模块
模块介绍(参数+原理):
核心参数:
- 探测范围:760nm~1100nm 红外 / 火焰光谱
- 探测距离:最大 80cm(打火机火焰),火焰越大距离越远
- 探测角度:约 60°
- 工作电压:3.3V–5V
- 输出:DO 数字开关量、AO 模拟电压
- 灵敏度:可调精密电位器调节
- 驱动能力:>15mA
工作原理:模块通过红外接收管采集火焰 / 红外光信号,经 LM393 比较器将模拟电压(AO)与可调阈值对比,输出干净的数字开关信号(DO),可直接驱动 LED 或连接单片机,实现火焰报警或红外感应。

电路介绍(核心):

水水水:视频教学
RTT+火焰
适合速成,没有相关参数解释,配套上方流程,
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