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(內(nèi)部溫度傳感器在通道ADC_Channel_16)

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adc-temperature.c

/**
 * @file adc_temperature.c
 * @author WaterFairy (995637517@qq.com)
 * @brief 芯片內(nèi)部溫度傳感器
 * @version 1.0.0
 * @date 2022-04-28 12:04:82
 *
 * @copyright Copyright (c) 2022
 *
 */

#include "stm32f10x.h"
#include "adc_temperature.h"
#include <stdio.h>

void init_adc_temperature(void)
{
    // adc
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_ADCCLKConfig(RCC_PCLK2_Div6); //分頻 72/6 =13 ,不高于14MHZ
    ADC_DeInit(ADC1);

    ADC_InitTypeDef adc_structure;
    adc_structure.ADC_DataAlign = ADC_DataAlign_Right;              //右對齊
    adc_structure.ADC_Mode = ADC_Mode_Independent;                  //獨立模式
    adc_structure.ADC_NbrOfChannel = 1;                             //掃描個數(shù)
    adc_structure.ADC_ContinuousConvMode = DISABLE;                 //連續(xù)
    adc_structure.ADC_ScanConvMode = DISABLE;                       //掃描
    adc_structure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None; //外部
    ADC_Init(ADC1, &adc_structure);

    //開啟內(nèi)部溫度傳感器
    ADC_TempSensorVrefintCmd(ENABLE);
    //使能adc1
    ADC_Cmd(ADC1, ENABLE);
    //規(guī)則組輸入通道配置  (ADC_Channel_16 固定通道,需要頻率高于17.5)
    ADC_RegularChannelConfig(ADC1, ADC_Channel_16, 1, ADC_SampleTime_239Cycles5);

    // adc 校驗
    ADC_ResetCalibration(ADC1);
    while (ADC_GetResetCalibrationStatus(ADC1))
        ;
    ADC_StartCalibration(ADC1);
    while (ADC_GetCalibrationStatus(ADC1))
        ;
}
/**
 * @brief 溫度轉換
 * 溫度(°C) = {(V25 - VSENSE) / Avg_Slope} + 25
 * V25 = VSENSE在25°C時的數(shù)值
 * Avg_Slope ＝ 溫度與VSENSE曲線的平均斜率(單位為mV/ °C 或 μV/ °C)
 * 即:(1.43 - voltage) / 0.043 + 25;
 * @param voltage
 * @return float
 */
float trans_temperature(float voltage)
{
    float V25 = 1.43;
    float Avg_Slope = 0.043;
    return (V25 - voltage) / Avg_Slope + 25;
}
/**
 * @brief Get the adc temperature value object
 *
 * @return float
 */
float get_adc_temperature_value(void)
{
    //開啟軟件轉換
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);
    while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC))
        ;
    // adc值
    uint16_t adc_value = ADC_GetConversionValue(ADC1);
    //電壓
    float voltage = (float)adc_value * (3.3 / 4096);
    //溫度
    return trans_temperature(voltage);
}

adc-temperature.c

/**
 * @file adc_temperature.h
 * @author WaterFairy (995637517@qq.com)
 * @brief
 * @version 1.0.0
 * @date 2022-04-28 12:04:75
 *
 * @copyright Copyright (c) 2022
 *
 */

#include "stm32f10x.h"

#ifndef __ADC_TEMPERATURE_H__
#define __ADC_TEMPERATURE_H__

void init_adc_temperature(void);

float get_adc_temperature_value(void);

#endif