写一个MM32F0144C6的读取SPI_Flash ID的完整代码

以下是一个简单的MM32F0144C6读取SPI Flash ID的示例代码：

#include "MM32F0144.h"

#define SPI_FLASH_CS_LOW()    GPIO_ResetBits(GPIOC, GPIO_Pin_4)
#define SPI_FLASH_CS_HIGH()   GPIO_SetBits(GPIOC, GPIO_Pin_4)

#define SPI_FLASH_CMD_READ_ID        0x9F

void SPI_Flash_Init(void);
uint8_t SPI_Flash_SendByte(uint8_t byte);
uint8_t SPI_Flash_ReadByte(void);
void SPI_Flash_ReadID(uint8_t *pManufacturerID, uint8_t *pDeviceID);

int main(void)
{
    uint8_t manufacturer_id = 0;
    uint8_t device_id = 0;
    
    SPI_Flash_Init();
    SPI_Flash_ReadID(&manufacturer_id, &device_id);
    
    while(1);
}

void SPI_Flash_Init(void)
{
    SPI_InitTypeDef SPI_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOC, &GPIO_InitStructure);

    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_256;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SPI2, &SPI_InitStructure);

    SPI_Cmd(SPI2, ENABLE);
}

uint8_t SPI_Flash_SendByte(uint8_t byte)
{
    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
    SPI_I2S_SendData(SPI2, byte);
    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_RXNE) == RESET);
    return SPI_I2S_ReceiveData(SPI2);
}

uint8_t SPI_Flash_ReadByte(void)
{
    return SPI_Flash_SendByte(0xFF);
}

void SPI_Flash_ReadID(uint8_t *pManufacturerID, uint8_t *pDeviceID)
{
    SPI_FLASH_CS_LOW();
    SPI_Flash_SendByte(SPI_FLASH_CMD_READ_ID);
    *pManufacturerID = SPI_Flash_ReadByte();
    *pDeviceID = SPI_Flash_ReadByte();
    SPI_FLASH_CS_HIGH();
}

在上面的示例代码中，我们使用了MM32F0144C6的SPI2接口来与SPI Flash通信。我们使用了GPIOC的第4个引脚作为SPI Flash的片选引脚。在初始化SPI接口后，我们可以通过SPI_Flash_SendByte()函数发送字节数据，通过SPI_Flash_ReadByte()函数读取字节数据。在SPI_Flash_ReadID()函数中，我们发送了0x9F命令，读取SPI Flash的制造商ID和设备ID。最后，我们打印出了制造商ID和设备ID。