[技术问答] I2C硬件收发器的状态字节是不是有统一的标准啊

/*---------------------------------------------------------------------------------------------------------*/

/*  I2C Rx Callback Function                                                                               */

/*---------------------------------------------------------------------------------------------------------*/

void I2C_MasterRx(uint32_t u32Status)

{

    if (u32Status == 0x08)                      /* START has been transmitted and prepare SLA+W */

    {

        I2C_SET_DATA(I2C0, (g_u8DeviceAddr << 1)); /* Write SLA+W to Register I2CDAT */

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x18)                 /* SLA+W has been transmitted and ACK has been received */

    {

        I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x20)                 /* SLA+W has been transmitted and NACK has been received */

    {

        I2C_SET_CONTROL_REG(I2C0, I2C_STA | I2C_STO | I2C_SI);

    }

    else if (u32Status == 0x28)                 /* DATA has been transmitted and ACK has been received */

    {

        if (g_u8DataLen != 2)

        {

            I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);

            I2C_SET_CONTROL_REG(I2C0, I2C_SI);

        }

        else

        {

            I2C_SET_CONTROL_REG(I2C0, I2C_STA | I2C_SI);

        }

    }

    else if (u32Status == 0x10)                 /* Repeat START has been transmitted and prepare SLA+R */

    {

        I2C_SET_DATA(I2C0, (g_u8DeviceAddr << 1) | 0x01);  /* Write SLA+R to Register I2CDAT */

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x40)                 /* SLA+R has been transmitted and ACK has been received */

    {

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x58)                 /* DATA has been received and NACK has been returned */

    {

        g_u8RxData = I2C_GET_DATA(I2C0);

        I2C_SET_CONTROL_REG(I2C0, I2C_STO | I2C_SI);

        g_u8EndFlag = 1;

    }

    else

    {

        /* TO DO */

        printf("Status 0x%x is NOT processed\n", u32Status);

    }

}



/*---------------------------------------------------------------------------------------------------------*/

/*  I2C Tx Callback Function                                                                               */

/*---------------------------------------------------------------------------------------------------------*/

void I2C_MasterTx(uint32_t u32Status)

{

    if (u32Status == 0x08)                      /* START has been transmitted */

    {

        I2C_SET_DATA(I2C0, g_u8DeviceAddr << 1);  /* Write SLA+W to Register I2CDAT */

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x18)                 /* SLA+W has been transmitted and ACK has been received */

    {

        I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);

        I2C_SET_CONTROL_REG(I2C0, I2C_SI);

    }

    else if (u32Status == 0x20)                 /* SLA+W has been transmitted and NACK has been received */

    {

        I2C_SET_CONTROL_REG(I2C0, I2C_STA | I2C_STO | I2C_SI);

    }

    else if (u32Status == 0x28)                 /* DATA has been transmitted and ACK has been received */

    {

        if (g_u8DataLen != 3)

        {

            I2C_SET_DATA(I2C0, g_au8TxData[g_u8DataLen++]);

            I2C_SET_CONTROL_REG(I2C0, I2C_SI);

        }

        else

        {

            I2C_SET_CONTROL_REG(I2C0, I2C_STO | I2C_SI);

            g_u8EndFlag = 1;

        }

    }

    else

    {

        /* TO DO */

        printf("Status 0x%x is NOT processed\n", u32Status);

    }

}