STM32F030F4P6 MCP3208代码

以下是基于STM32F030F4P6和MCP3208的SPI通信代码示例：

#include "stm32f0xx.h"

// 定义MCP3208的通道选择指令
#define MCP3208_CH0 0b11000000
#define MCP3208_CH1 0b11100000
#define MCP3208_CH2 0b10000000
#define MCP3208_CH3 0b10100000
#define MCP3208_CH4 0b00000000
#define MCP3208_CH5 0b10010000
#define MCP3208_CH6 0b01000000
#define MCP3208_CH7 0b11010000

// MCP3208的SPI通信函数
uint16_t MCP3208_Read(uint8_t ch) {
    uint16_t data = 0;
    uint8_t send[3] = {0};
    uint8_t recv[3] = {0};

    // 选择通道并发送指令
    send[0] = ch;
    send[1] = 0;
    send[2] = 0;
    GPIOA->BSRR |= GPIO_BSRR_BR_4;
    for (int i = 0; i < 3; i++) {
        while (!(SPI1->SR & SPI_SR_TXE));
        SPI1->DR = send[i];
        while (!(SPI1->SR & SPI_SR_RXNE));
        recv[i] = SPI1->DR;
    }
    GPIOA->BSRR |= GPIO_BSRR_BS_4;

    // 读取数据
    data = ((recv[1] & 0x0F) << 8) | recv[2];

    return data;
}

int main(void)
{
    // 初始化SPI1
    RCC->APB2ENR |= RCC_APB2ENR_SPI1EN;
    RCC->AHBENR |= RCC_AHBENR_GPIOAEN;
    GPIOA->MODER |= GPIO_MODER_MODER5_1 | GPIO_MODER_MODER7_1 | GPIO_MODER_MODER6_1 | GPIO_MODER_MODER4_0;
    GPIOA->AFR[0] |= (0 << GPIO_AFRL_AFRL5_Pos) | (0 << GPIO_AFRL_AFRL6_Pos) | (0 << GPIO_AFRL_AFRL7_Pos);
    SPI1->CR1 |= SPI_CR1_BR_2 | SPI_CR1_BR_1 | SPI_CR1_BR_0 | SPI_CR1_CPOL | SPI_CR1_CPHA | SPI_CR1_MSTR | SPI_CR1_SSM | SPI_CR1_SSI;
    SPI1->CR2 |= SPI_CR2_DS_0 | SPI_CR2_DS_1 | SPI_CR2_DS_2;

    while (1) {
        // 读取MCP3208的通道0
        uint16_t data = MCP3208_Read(MCP3208_CH0);
        // 处理数据
        // ...
    }
}

需要注意的是，此代码仅供参考，具体实现请根据实际情况进行修改。