stm32温度采集adc dac代码如何写

您好，以下是关于 stm32 温度采集 adc dac 代码的示例：

首先，您需要初始化 ADC 和 DAC 模块，然后设置 ADC 采样率和 DAC 输出电压。接下来，您可以使用 ADC 采集温度传感器的电压值，并将其转换为实际温度值。最后，您可以使用 DAC 输出控制电压来控制温度。

以下是示例代码：

#include "stm32f4xx.h"

void ADC_Init(void)
{
ADC_InitTypeDef ADC_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

GPIO_InitStruct.GPIO_Pin = GPIO_Pin_;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);

ADC_CommonInitTypeDef ADC_CommonInitStruct;
ADC_CommonInitStruct.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStruct.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStruct.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStruct.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStruct);

ADC_InitStruct.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStruct.ADC_ScanConvMode = DISABLE;
ADC_InitStruct.ADC_ContinuousConvMode = DISABLE;
ADC_InitStruct.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStruct.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStruct.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStruct);

ADC_Cmd(ADC1, ENABLE);
}

void DAC_Init(void)
{
DAC_InitTypeDef DAC_InitStruct;
GPIO_InitTypeDef GPIO_InitStruct;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

GPIO_InitStruct.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);

DAC_InitStruct.DAC_Trigger = DAC_Trigger_None;
DAC_InitStruct.DAC_WaveGeneration = DAC_WaveGeneration_None;
DAC_InitStruct.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
DAC_Init(DAC_Channel_1, &DAC_InitStruct);

DAC_Cmd(DAC_Channel_1, ENABLE);
}

float Get_Temperature(void)
{
uint16_t adc_value = ;
float temperature = .;

ADC_RegularChannelConfig(ADC1, ADC_Channel_, 1, ADC_SampleTime_84Cycles);
ADC_SoftwareStartConv(ADC1);
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
adc_value = ADC_GetConversionValue(ADC1);

temperature = (float)adc_value / 4096. * 3.3;
temperature = (temperature - .76) / .0025 + 25.;

return temperature;
}

void Set_Temperature(float temperature)
{
uint16_t dac_value = ;

dac_value = (uint16_t)(temperature / 3.3 * 4096.);
DAC_SetChannel1Data(DAC_Align_12b_R, dac_value);
}

int main(void)
{
ADC_Init();
DAC_Init();

while(1)
{
float temperature = Get_Temperature();
Set_Temperature(temperature + 5.);
}
}