Closed tiantian1645 closed 3 years ago
https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx/blob/master/projects/usart_rx_idle_line_irq_ringbuff_G0/Src/main.c#L91
pos = ARRAY_LEN(usart_rx_dma_buffer) - LL_DMA_GetDataLength(DMA1, LL_DMA_CHANNEL_2);
pos will be zero if receive size equal ARRAY_LEN(usart_rx_dma_buffer)
That's ok.
https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx/blob/master/projects/usart_rx_idle_line_irq_ringbuff_G0/Src/main.c#L91
pos will be zero if receive size equal ARRAY_LEN(usart_rx_dma_buffer)