用c语言写这个基于stm32的4路电阻温度测量程序

好的，我可以为您提供一份基于STM32的4路电阻温度测量程序的C语言代码示例。请注意，由于我无法直接访问STM32硬件，因此这只是一个基本的示例代码，您可能需要根据您的具体硬件配置和需求进行修改。

#include "stm32f4xx.h"
#include "stdio.h"
#include "stdlib.h"

#define ADC1_DR_ADDRESS ((uint32_t)0x4001204C)

float temp[4];

void ADC1_Init(void);
void GPIO_Init(void);
void USART1_Init(void);
void USART1_puts(char* s);

int main(void)
{
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

    GPIO_Init();
    ADC1_Init();
    USART1_Init();

    while (1)
    {
        ADC_SoftwareStartConv(ADC1);
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
        temp[0] = ((ADC_GetConversionValue(ADC1) * 3.3 / 4096 - 0.76) / 0.0025) + 25;

        ADC_SoftwareStartConv(ADC1);
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
        temp[1] = ((ADC_GetConversionValue(ADC1) * 3.3 / 4096 - 0.76) / 0.0025) + 25;

        ADC_SoftwareStartConv(ADC1);
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
        temp[2] = ((ADC_GetConversionValue(ADC1) * 3.3 / 4096 - 0.76) / 0.0025) + 25;

        ADC_SoftwareStartConv(ADC1);
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
        temp[3] = ((ADC_GetConversionValue(ADC1) * 3.3 / 4096 - 0.76) / 0.0025) + 25;

        char buffer[100];
        sprintf(buffer, "Temp1: %.2f C\r\nTemp2: %.2f C\r\nTemp3: %.2f C\r\nTemp4: %.2f C\r\n", temp[0], temp[1], temp[2], temp[3]);
        USART1_puts(buffer);

        delay_ms(1000);
    }
}

void ADC1_Init(void)
{
    ADC_CommonInitTypeDef ADC_CommonInitStructure;
    ADC_InitTypeDef ADC_InitStructure;

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

    ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
    ADC_InitStructure.ADC_ScanConvMode = ENABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfConversion = 4;
    ADC_Init(ADC1, &ADC_InitStructure);

    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_480Cycles);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_480Cycles);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_480Cycles);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_480Cycles);

    ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
    ADC_DMACmd(ADC1, ENABLE);
    ADC_Cmd(ADC1, ENABLE);
}

void GPIO_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
}

void USART1_Init(void)
{
    USART_InitTypeDef USART_InitStructure;

    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx;

    USART_Init(USART1, &USART_InitStructure);
    USART_Cmd(USART1, ENABLE);
}

void USART1_puts(char* s)
{
    while(*s)
    {
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
        USART_SendData(USART1, *s++);
    }
}

void delay_ms(uint32_t ms)
{
    volatile uint32_t nCount;
    RCC_ClocksTypeDef RCC_Clocks;
    RCC_GetClocksFreq(&RCC_Clocks);
    nCount=(RCC_Clocks.HCLK_Frequency/10000)*ms;
    for(; nCount!=0; nCount--);
}

上述代码使用了4个通道进行ADC转换，每个通道的输入电压都通过电阻分压器接在了ADC的输入端口。程序中的ADC采样时间、参考电压和电压分压器的参数都需要根据具体的硬件配置进行修改。在转换完成后，程序通过USART1把测量数据发送到串口终端。

以上代码仅供参考，具体实现方式可能因硬件和需求的不同而有所不同，您需要根据具体情况进行修改和调试。