GD32F30x系列的芯片，IIC使用DMA和EEPROM通信总线无法正常关闭总线

void I2C_config(void)

{

    rcu_periph_clock_enable(RCU_GPIOB);

    rcu_periph_clock_enable(RCU_I2C0);

    rcu_periph_clock_enable(RCU_DMA0);

    

    gpio_init(GPIOB, GPIO_MODE_AF_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_6 | GPIO_PIN_7);

    

    i2c_deinit(I2C0);

    

    i2c_clock_config(I2C0, 1000000, I2C_DTCY_16_9);

    i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0x11);

    i2c_enable(I2C0);

    i2c_ack_config(I2C0, I2C_ACK_ENABLE);

}

 

uint8_t I2C(uint8_t Addr, uint8_t *TRxData,uint16_t Size)

{

    if(Addr == SLAVE1ADDR_W)

    {

        dma_deinit(DMA0, DMA_CH5);//复位外设DMAx的通道y的所有寄存器

        dma_struct_para_init(&dma_init_struct);//将DMA结构体中所有参数初始化为默认值

 

        dma_init_struct.direction = DMA_MEMORY_TO_PERIPHERAL;//读取存储器中数据，写入外设(写入)

        dma_init_struct.memory_addr = (uint32_t)TRxData;

        dma_init_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;

        dma_init_struct.memory_width = DMA_MEMORY_WIDTH_8BIT;

        dma_init_struct.number = Size;//数据传输数量

        dma_init_struct.periph_addr = (uint32_t)&I2C_DATA(I2C0);//**

        dma_init_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;

        dma_init_struct.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;

        dma_init_struct.priority = DMA_PRIORITY_ULTRA_HIGH;

        dma_init(DMA0, DMA_CH5, &dma_init_struct);

        

        while(i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));

        i2c_start_on_bus(I2C0);

        while(!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));

           i2c_master_addressing(I2C0, Addr, I2C_TRANSMITTER);

        while(!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));

        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);

        

        i2c_dma_config(I2C0, I2C_DMA_ON);

        dma_channel_enable(DMA0, DMA_CH5);

        while(!dma_flag_get(DMA0, DMA_CH5, DMA_FLAG_FTF));

        dma_flag_clear(DMA0, DMA_CH5, DMA_FLAG_FTF);

        

    i2c_stop_on_bus(I2C0);

    while(I2C_CTL0(I2C0)<span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-variant-ligatures: common-ligatures; background-color: rgb(255, 255, 255);"> & </span>0x0200);

    i2c_dma_config(I2C0, I2C_DMA_OFF);

    dma_channel_disable(DMA0, DMA_CH5);

    }

    else if(Addr == SLAVE1ADDR_R)

    {

        dma_deinit(DMA0, DMA_CH6);//复位外设DMAx的通道y的所有寄存器

        dma_struct_para_init(&dma_init_struct);//将DMA结构体中所有参数初始化为默认值

 

        dma_init_struct.direction = DMA_PERIPHERAL_TO_MEMORY;//读取外设中数据，写入存储器(读取)

        dma_init_struct.memory_addr = (uint32_t)TRxData;

        dma_init_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;

        dma_init_struct.memory_width = DMA_MEMORY_WIDTH_8BIT;

        dma_init_struct.number = Size;//数据传输数量

        dma_init_struct.periph_addr = (uint32_t)&I2C_DATA(I2C0);//**

        dma_init_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;

        dma_init_struct.periph_width = DMA_PERIPHERAL_WIDTH_8BIT;

        dma_init_struct.priority = DMA_PRIORITY_ULTRA_HIGH;

        dma_init(DMA0, DMA_CH6, &dma_init_struct);

        

        while(i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));

        i2c_start_on_bus(I2C0);

        while(!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));

        i2c_master_addressing(I2C0, Addr, I2C_RECEIVER);

        while(!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));

        i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);

        

        i2c_dma_config(I2C0, I2C_DMA_ON);

        dma_channel_enable(DMA0, DMA_CH6);

        while(!dma_flag_get(DMA0, DMA_CH6, DMA_FLAG_FTF));

        dma_flag_clear(DMA0, DMA_CH6, DMA_FLAG_FTF);

        

     i2c_stop_on_bus(I2C0);

     while(I2C_CTL0(I2C0)<span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-variant-ligatures: common-ligatures; background-color: rgb(255, 255, 255);"> & </span>0x0200);

     i2c_dma_config(I2C0, I2C_DMA_OFF);

     dma_channel_disable(DMA0, DMA_CH6);

    }

    return 1;

}

 

int main(void)

{

    I2C_config();

    

    uint8_t IICTXData[3] = {0,0,100};

    uint8_t IICRXData[3] = {0,0,0};

    

    I2C(SLAVE1ADDR_W,IICTXData,3);

    

    I2C(SLAVE1ADDR_R,IICTXData,3);

 

    if(IICRXData[0] == 100)

        {

            gpio_bit_reset(GPIOG, GPIO_PIN_15);//亮灯

        }

  

        delay_1ms(10);

  

        IICTXData[2] = 99;

            

I2C(SLAVE1ADDR_W,IICTXData,3);



I2C(SLAVE1ADDR_R,IICTXData,3);

    

    if(IICRXData[0] == 99)

        {

            gpio_bit_set(GPIOG, GPIO_PIN_15);//灭灯

        }

}