帮我写一个基于STM32F103与SPI 通讯下的采集电压数据传输并打印到串口上的代码

好的，这里提供一个基于STM32F103与SPI通讯下的采集电压数据传输并打印到串口上的代码，供参考：

#include "stm32f10x.h"
#include "stdio.h"

#define SPI1_CS_PIN  GPIO_Pin_4
#define SPI1_CS_PORT GPIOA

void SPI1_Init(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void USART_SendString(char* str);

int main(void)
{
    GPIO_Configuration();
    USART_Configuration();
    SPI1_Init();

    while(1)
    {
        GPIO_ResetBits(SPI1_CS_PORT, SPI1_CS_PIN); // 使能SPI1传输
        while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); // 等待发送缓冲区为空
        SPI_I2S_SendData(SPI1, 0x01); // 发送采集命令
        while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); // 等待接收缓冲区非空
        uint16_t raw_value = SPI_I2S_ReceiveData(SPI1); // 接收采集到的原始数据
        GPIO_SetBits(SPI1_CS_PORT, SPI1_CS_PIN); // 关闭SPI1传输

        float voltage = (float)raw_value / 4095 * 3.3; // 计算电压值，假设采集器分辨率为12位，电压范围为0~3.3V

        char buffer[50];
        sprintf(buffer, "Voltage: %.2fV\r\n", voltage); // 格式化电压值
        USART_SendString(buffer); // 通过串口发送电压值
    }
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = SPI1_CS_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SPI1_CS_PORT, &GPIO_InitStructure);
}

void USART_Configuration(void)
{
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

    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 SPI1_Init(void)
{
    SPI_InitTypeDef SPI_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);

    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_16b;
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SPI1, &SPI_InitStructure);

    SPI_Cmd(SPI1, ENABLE);
}

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

在该代码中，通过SPI1与采集器进行通讯，发送采集命令并接收采集到的原始数据，然后计算出电压值并通过串口发送。注意修改代码中的采集命令及采集器数据格式等参数，以适配实际应用场景。