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Update drv_usart.c

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周传福 2019-05-19 22:26:56 +08:00 committed by GitHub
parent 24f38acf52
commit 81ff374aed
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1 changed files with 6 additions and 6 deletions
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12
bsp/stm32/libraries/HAL_Drivers/drv_usart.c
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@ -359,20 +359,20 @@ static void dma_isr(struct rt_serial_device *serial)
uart = (struct stm32_uart *) serial->parent.user_data;
RT_ASSERT(uart != RT_NULL);
if ((__HAL_DMA_GET_IT_SOURCE(&(uart->dma.handle), DMA_IT_TC) != RESET) ||
(__HAL_DMA_GET_IT_SOURCE(&(uart->dma.handle), DMA_IT_HT) != RESET))
if ((__HAL_DMA_GET_IT_SOURCE(&(uart->dma_rx.handle), DMA_IT_TC) != RESET) ||
(__HAL_DMA_GET_IT_SOURCE(&(uart->dma_rx.handle), DMA_IT_HT) != RESET))
{
level = rt_hw_interrupt_disable();
recv_total_index = serial->config.bufsz - __HAL_DMA_GET_COUNTER(&(uart->dma.handle));
recv_total_index = serial->config.bufsz - __HAL_DMA_GET_COUNTER(&(uart->dma_rx.handle));
if (recv_total_index == 0)
{
recv_len = serial->config.bufsz - uart->dma.last_index;
recv_len = serial->config.bufsz - uart->dma_rx.last_index;
}
else
{
recv_len = recv_total_index - uart->dma.last_index;
recv_len = recv_total_index - uart->dma_rx.last_index;
}
uart->dma.last_index = recv_total_index;
uart->dma_rx.last_index = recv_total_index;
rt_hw_interrupt_enable(level);
if (recv_len)