diff options
| -rw-r--r-- | bsp/hc32/libraries/hc32_drivers/drv_usart.c | 13 | ||||
| -rw-r--r-- | bsp/hc32/libraries/hc32_drivers/drv_usart.h | 1 |
2 files changed, 7 insertions, 7 deletions
diff --git a/bsp/hc32/libraries/hc32_drivers/drv_usart.c b/bsp/hc32/libraries/hc32_drivers/drv_usart.c index 15a2107d6d..582bb343d2 100644 --- a/bsp/hc32/libraries/hc32_drivers/drv_usart.c +++ b/bsp/hc32/libraries/hc32_drivers/drv_usart.c @@ -545,18 +545,17 @@ static void hc32_dma_config(struct rt_serial_device *serial, rt_ubase_t flag) DMA_Init(uart_dma->Instance, uart_dma->channel, &dma_init); /* Initialize LLP */ - static stc_dma_llp_descriptor_t llp_desc; llp_init.u32State = DMA_LLP_ENABLE; llp_init.u32Mode = DMA_LLP_WAIT; - llp_init.u32Addr = (uint32_t)&llp_desc; + llp_init.u32Addr = (uint32_t)&uart->config->llp_desc; DMA_LlpInit(uart_dma->Instance, uart_dma->channel, &llp_init); /* Configure LLP descriptor */ - llp_desc.SARx = dma_init.u32SrcAddr; - llp_desc.DARx = dma_init.u32DestAddr; - llp_desc.DTCTLx = (dma_init.u32TransCount << DMA_DTCTL_CNT_POS) | (dma_init.u32BlockSize << DMA_DTCTL_BLKSIZE_POS); - llp_desc.LLPx = (uint32_t)&llp_desc; - llp_desc.CHCTLx = (dma_init.u32SrcAddrInc | dma_init.u32DestAddrInc | dma_init.u32DataWidth | \ + uart->config->llp_desc.SARx = dma_init.u32SrcAddr; + uart->config->llp_desc.DARx = dma_init.u32DestAddr; + uart->config->llp_desc.DTCTLx = (dma_init.u32TransCount << DMA_DTCTL_CNT_POS) | (dma_init.u32BlockSize << DMA_DTCTL_BLKSIZE_POS); + uart->config->llp_desc.LLPx = (uint32_t)&uart->config->llp_desc; + uart->config->llp_desc.CHCTLx = (dma_init.u32SrcAddrInc | dma_init.u32DestAddrInc | dma_init.u32DataWidth | \ llp_init.u32State | llp_init.u32Mode | dma_init.u32IntEn); /* Enable DMA interrupt */ diff --git a/bsp/hc32/libraries/hc32_drivers/drv_usart.h b/bsp/hc32/libraries/hc32_drivers/drv_usart.h index 4b9ab4ae80..4b70bcdb04 100644 --- a/bsp/hc32/libraries/hc32_drivers/drv_usart.h +++ b/bsp/hc32/libraries/hc32_drivers/drv_usart.h @@ -57,6 +57,7 @@ struct hc32_uart_config struct hc32_uart_irq_config tx_irq; #ifdef RT_SERIAL_USING_DMA struct hc32_uart_rxto *rx_timeout; + stc_dma_llp_descriptor_t llp_desc; struct dma_config *dma_rx; struct hc32_uart_irq_config *tc_irq; struct dma_config *dma_tx; |