搜了很多资料都没明白uart dma模式是怎样一个工作流程。是通过dma把uart rx fifo中的数据搬运到内存吗?xiexiedalao
GitHub - MaJerle/stm32-usart-uart-dma-rx-tx: STM32 examples for USART using DMA for efficient RX and TX transmission STM32 examples for USART using DMA for efficient RX and TX transmission - GitHub - MaJerle/stm32-usart-uart-dma-rx-tx: STM32 examples for USART using DMA for efficient RX and TX transmission https://github.com/MaJerle/stm32-usart-uart-dma-rx-tx建议你好好阅读他的readme。