【灵动微电子MM32F0121测评】+5_硬件I2C写入读取测试

只看该作者 · 2025-6-18 22:00

i2c是我们在项目中应该非常多的通信协议，MM32F0121自带硬件I2C，而且开发板上还带一个24c02存储芯片，用的就是I2C协议，

下面就是对i2c初始化

void I2C_Configure(void)

{

    GPIO_InitTypeDef GPIO_InitStruct;

    I2C_InitTypeDef  I2C_InitStruct;



    RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);



    I2C_DeInit(I2C1);



    I2C_StructInit(&I2C_InitStruct);

    I2C_InitStruct.I2C_Mode       = I2C_MODE_MASTER;

    I2C_InitStruct.I2C_OwnAddress = I2C_OWN_ADDRESS;

    I2C_InitStruct.I2C_ClockSpeed = 100000;

    I2C_Init(I2C1, &I2C_InitStruct);



    I2C_TargetAddressConfig(I2C1, EEPROM_I2C_ADDRESS);



    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);



    GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_1);

    GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_1);



    GPIO_StructInit(&GPIO_InitStruct);

    GPIO_InitStruct.GPIO_Pin   = GPIO_Pin_10 | GPIO_Pin_11;

    GPIO_InitStruct.GPIO_Speed = GPIO_Speed_High;

    GPIO_InitStruct.GPIO_Mode  = GPIO_Mode_AF_OD;

    GPIO_Init(GPIOB, &GPIO_InitStruct);



    I2C_Cmd(I2C1, ENABLE);

}

下面就是写入Hello 21ic, Hello MM32F0121,

复制

    uint8_t ReadBuffer[]={0}, WriteBuffer[]="Hello 21ic, Hello MM32F0121";



    printf("\r\nTest %s", __FUNCTION__);



    I2C_Configure();



    printf("\r\n\r\nEEPROM Write : ");



    EEPROM_WriteData(0, WriteBuffer, sizeof(WriteBuffer));



    printf("OK");



    printf("\r\n\r\nEEPROM Read  : \r\n");



    EEPROM_ReadData(0, ReadBuffer, sizeof(WriteBuffer));

                printf("%s ", ReadBuffer);

下需就是在串口助手中查看

只看该作者 · 2025-7-31 17:55

硬件I2C写入读取测试