STM32F030F4P6 MCP3208代码

以下是使用STM32F030F4P6与MCP3208进行SPI通信的示例代码，你可以根据你的具体需求进行修改：

#include "stm32f0xx.h"
#include "stdio.h"

void RCC_Configuration(void);
void GPIO_Configuration(void);
void SPI_Configuration(void);
uint16_t MCP3208_ReadChannel(uint8_t channel);

int main(void)
{
    RCC_Configuration();
    GPIO_Configuration();
    SPI_Configuration();

    uint16_t value = MCP3208_ReadChannel(0); //读取MCP3208的通道0的值
    printf("MCP3208 channel 0 value: %d\n", value);

    while(1)
    {
    }
}

void RCC_Configuration(void)
{
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SPI1, ENABLE);
}

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    //MCP3208的CS引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    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);

    //SPI1的SCK、MOSI、MISO引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_7;
    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_NOPULL;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_0);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_0);
}

void SPI_Configuration(void)
{
    SPI_InitTypeDef SPI_InitStructure;

    SPI_I2S_DeInit(SPI1);

    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_64;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SPI1, &SPI_InitStructure);

    SPI_Cmd(SPI1, ENABLE);
}

uint16_t MCP3208_ReadChannel(uint8_t channel)
{
    uint16_t value = 0;
    uint8_t cmd = 0x06; //单端输入模式，通道0的命令字
    cmd |= (channel << 1); //设置通道号

    GPIO_ResetBits(GPIOA, GPIO_Pin_4); //拉低CS使能
    SPI_I2S_SendData16(SPI1, cmd); //发送命令字
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET); //等待发送完成
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET); //等待接收完成
    value = SPI_I2S_ReceiveData16(SPI1); //读取回传的数据

    value &= 0x0FFF; //只保留12位有效数据
    GPIO_SetBits(GPIOA, GPIO_Pin_4); //拉高CS禁止

    return value;
}

在使用这份示例代码之前，你需要先了解STM32F030F4P6和MCP3208的硬件连接方式。