GD32f303 iic从机问题请求帮忙解决

static int slaveI2c1Enable(struct slaveI2cBus *bus, unsigned int slaveAddr, int bEnable)

{

    if (!bEnable)

    {

        i2c_disable(I2C1);

        rcu_periph_clock_disable(RCU_I2C1);

    }

    else

    {

        /* enable GPIOB clock */

        rcu_periph_clock_enable(RCU_GPIOB);

        /* enable I2C1 clock */

        rcu_periph_clock_enable(RCU_I2C1);



        /* connect PB10 to I2C1_SCL */

        /* connect PB11 to I2C1_SDA */

        gpio_init(GPIOB, GPIO_MODE_AF_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_10 | GPIO_PIN_11);



        /* I2C clock configure */

        i2c_clock_config(I2C1, 100000, I2C_DTCY_2);

        /* I2C address configure */

        i2c_mode_addr_config(I2C1, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, slaveAddr);

        /* enable I2C1 */

        i2c_enable(I2C1);

        /* enable acknowledge */

        i2c_ack_config(I2C1, I2C_ACK_ENABLE);



        /* enable the I2C1 interrupt */

        nvic_priority_group_set(NVIC_PRIGROUP_PRE1_SUB3);

        nvic_irq_enable(I2C1_EV_IRQn, 0, 1);

        nvic_irq_enable(I2C1_ER_IRQn, 0, 2);



        i2c_interrupt_enable(I2C1, I2C_INT_ERR);

        i2c_interrupt_enable(I2C1, I2C_INT_BUF);

        i2c_interrupt_enable(I2C1, I2C_INT_EV);

    }



    return 0;

}



void I2C1_EV_IRQHandler(void)

{



    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_ADDSEND))

    {

        /* clear the ADDSEND bit */

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_ADDSEND);



        if (i2c1.start)

            i2c1.start(&i2c1);

    }

    else if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_RBNE))

    {

        /* if reception data register is not empty ,I2C1 will read a data from I2C_DATA */

        if (i2c1.rx)

            i2c1.rx(&i2c1, i2c_data_receive(I2C1));

    }

    else if ((i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_TBE)) && (!i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_AERR)))

    {

        /* send a data byte */

        unsigned char txValue = i2c1.txData ? (unsigned char)i2c1.txData(&i2c1) : 0x00;

        i2c_data_transmit(I2C1, txValue);

    }

    else if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_STPDET))

    {

        /* clear the STPDET bit */

        i2c_enable(I2C1);



        if (i2c1.stop)

            i2c1.stop(&i2c1);

    }

}



void I2C1_ER_IRQHandler(void)

{

    /* no acknowledge received */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_AERR))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_AERR);



    /* SMBus alert */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_SMBALT))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_SMBALT);



    /* bus timeout in SMBus mode */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_SMBTO))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_SMBTO);



    /* over-run or under-run when SCL stretch is disabled */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_OUERR))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_OUERR);



    /* arbitration lost */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_LOSTARB))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_LOSTARB);



    /* bus error */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_BERR))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_BERR);



    /* CRC value doesn't match */

    if (i2c_interrupt_flag_get(I2C1, I2C_INT_FLAG_PECERR))

        i2c_interrupt_flag_clear(I2C1, I2C_INT_FLAG_PECERR);

}