在AT32F403A中，你可以使用SPI_I2S_DataTransmit函数来发送数据。

#include "AT32f4xx.h"



// 初始化SPI

void SPI_Init() {

    // 选择SPI控制器

    SPIx = SPI1;

    

    // 使能SPI时钟

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);

    

    // 配置SPI参数

    SPI_InitTypeDef SPI_InitStructure;

    SPI_InitStructure.SPI_Mode = SPI_Mode_Master; // 主模式

    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex; // 全双工模式

    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // 数据位宽8位

    SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // 时钟极性为低电平

    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge; // 时钟相位为第一边沿

    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // 使用软件控制片选

    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256; // 波特率分频256

    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; // 先发送最高位

    SPI_Init(SPIx, &SPI_InitStructure);

    

    // 使能SPI

    SPI_Cmd(SPIx, ENABLE);

}



// 读取93C46

uint8_t read_93C46(uint8_t opcode, uint8_t address) {

    // 发送操作码和地址

    SPI_I2S_SendData(SPIx, opcode);

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    uint8_t received_data = SPI_I2S_ReceiveData(SPIx);

    

    SPI_I2S_SendData(SPIx, address);

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);

    

    // 读取数据

    SPI_I2S_SendData(SPIx, 0x00); // 发送一个空字节，以便从93C46读取数据

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);

    

    return received_data;

}



// 写入93C46

void write_93C46(uint8_t opcode, uint8_t address, uint8_t data) {

    // 发送操作码和地址

    SPI_I2S_SendData(SPIx, opcode);

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    uint8_t received_data = SPI_I2S_ReceiveData(SPIx);

    

    SPI_I2S_SendData(SPIx, address);

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);

    

    // 写入数据

    SPI_I2S_SendData(SPIx, data);

    while(SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);

}



int main() {

    // 初始化SPI

    SPI_Init();

    

    // 读取93C46的数据

    uint8_t opcode = 0b110; // 示例操作码，根据需要修改

    uint8_t address = 0b0101; // 示例地址，根据需要修改

    uint8_t data = read_93C46(opcode, address);

    

    // 写入93C46的数据

    // 示例数据，根据需要修改

    uint8_t write_data = 0xAB;



    // 写入93C46的数据

    write_93C46(opcode, address, write_data);



    while (1) {

        // 循环执行其他任务

    }

}



// 读取93C46

uint8_t read_93C46(uint8_t opcode, uint8_t address) {

    // 发送操作码和地址

    SPI_I2S_SendData(SPIx, opcode << 5 | address);

    while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    uint8_t received_data = SPI_I2S_ReceiveData(SPIx);



    // 读取数据

    SPI_I2S_SendData(SPIx, 0x00); // 发送一个空字节，以便从93C46读取数据

    while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);



    return received_data;

}



// 写入93C46

void write_93C46(uint8_t opcode, uint8_t address, uint8_t data) {

    // 发送操作码、地址和数据

    SPI_I2S_SendData(SPIx, opcode << 5 | address);

    while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    uint8_t received_data = SPI_I2S_ReceiveData(SPIx);



    // 写入数据

    SPI_I2S_SendData(SPIx, data);

    while (SPI_I2S_GetFlagStatus(SPIx, SPI_I2S_FLAG_RXNE) == RESET);

    received_data = SPI_I2S_ReceiveData(SPIx);

}