GD32H7 从存储器到外设SPI传输数据无法重复启用DMA

Question

GD32H7系列 DMA传输多个num到SPI外设就会出错，CHEN寄存器不再清零。

    dma_single_data_parameter_struct dma_init_struct;
__attribute__((aligned(32))) uint32_t spi3_send_array[BUFFER_SIZE] = {};

void DMA_Init(void)
{     
    uint16_t i;
    SCB_CleanDCache_by_Addr((uint32_t *)spi3_send_array, BUFFER_SIZE * 2);
    nvic_irq_enable(EXTI0_IRQn, 1U, 0U); //add DMA_INT EXTI0_IRQn ENET0_IRQn
//    dma_single_data_parameter_struct dma_init_struct;
    rcu_periph_clock_enable(RCU_DMA0);
    rcu_periph_clock_enable(RCU_DMAMUX);
    dma_deinit(DMA0, DMA_CH0);
    dma_single_data_para_struct_init(&dma_init_struct);
    dma_init_struct.request = DMA_REQUEST_SPI3_TX;
    dma_init_struct.direction = DMA_MEMORY_TO_PERIPH;    
    dma_init_struct.memory0_addr = (uint32_t)spi3_send_array;
    dma_init_struct.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
    dma_init_struct.periph_memory_width = DMA_PERIPH_WIDTH_32BIT;
    dma_init_struct.number = BUFFER_SIZE;
    dma_init_struct.periph_addr = SPI3_DATA_ADDRESS;
    dma_init_struct.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
    dma_init_struct.priority = DMA_PRIORITY_ULTRA_HIGH;
    dma_single_data_mode_init(DMA0, DMA_CH0, &dma_init_struct);
  
    dma_circulation_disable(DMA0, DMA_CH0);

//    dma_interrupt_enable(DMA0, DMA_CH0, DMA_CHXCTL_FTFIE);
    dma_interrupt_disable(DMA0, DMA_CH0, DMA_INTF_FEEIF);
    
    dma_channel_enable(DMA0, DMA_CH0);   
    
}

void 发送处理(void)   
{
        SCB_CleanInvalidateDCache();
        dma_flag_clear(DMA0, DMA_CH0, DMA_INTF_FTFIF);
        dma_init_struct.memory0_addr = (uint32_t)spi3_send_array;
        dma_init_struct.number = BUFFER_SIZE;
        dma_single_data_mode_init(DMA0, DMA_CH0, &dma_init_struct);
        dma_channel_enable(DMA0, DMA_CH0); 
        spi_dma_enable(SPI3, SPI_DMA_TRANSMIT);    
        spi_master_transfer_start(SPI3, SPI_TRANS_START);
        while(!dma_flag_get(DMA0, DMA_CH0, DMA_INTF_FTFIF));  //等待传输完成，FTFIF被置一
        dma_flag_clear(DMA0, DMA_CH0, DMA_INTF_FTFIF);
        spi_dma_disable(SPI3, SPI_DMA_TRANSMIT); 
        SCB_CleanInvalidateDCache();
       DMA_trans_enable = 0;
       exti_interrupt_flag_clear(EXTI_0);

}

Answer 1

发一下SPI的配置看下