yangsong8-a1 commented on issue #16004: URL: https://github.com/apache/nuttx/issues/16004#issuecomment-2750031291
> If you set bytes_to_read to something a bit bigger (like 5), you don't get anything out any more. Also the thing keeps crashing. In order to reduce the copying of data, the USB reqbuf is directly used as the serial port buf. When CONFIG_CDCACM_NRDREQS is 4, at most 4 packets of USB data are stored without reading. Minicom uses 1 byte as 1 packet of data, so it can only receive 4 bytes. More bytes can be received by expanding CONFIG_CDCACM_NRDREQS. If bytes_to_read is bigger than 5, it will cause a crash？If so, it should be a driver problem, because when there is no buf, the USB device should return NAK but not crash. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
