STM32 serial port plus DMA receiving problem

Publisher:哈哈哈33Latest update time:2018-10-05 Source: eefocusKeywords:stm32 Reading articles on mobile phones Scan QR code
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Settings: Enable idle interrupt for serial port; use DMA to receive; disable DMA interrupt


Phenomenon: As long as the received data is greater than the set DMA receiving length, no data will be received, but the serial port idle interrupt can be entered


Solution: Turning on the DMA interrupt will solve the problem caused by the overflow mentioned above.


Keywords:stm32 Reference address:STM32 serial port plus DMA receiving problem

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