Created attachment 667 [details] reset send failed. Hi. I tried to create a SUMP protocol logic analyzer with a $2 hardware. It worked perfectly well with pulseview in MacOS. https://github.com/DeqingSun/ch55xduino/tree/ch55xduino/ch55xduino/ch55x/libraries/Generic_Examples/examples/04.Communication/SumpLogicAnalyzer However, when I tried windows, pulseview can not scan it successfully every time. Even when it is connected, the capture only work about once in 5 times. And there is a high change it will throw a general error and crash. So I tried sigrok-cli to get more info with CH552 (ACM-CDC), Arduino Leonardo (ACM-CDC) and Arduino Duemilanove (FT232R), they all have similar issues. Here are some screen capture and USB packets I captured. Sometimes the reset command is not delivered (Wrote 0/1 bytes). And the scan got terminated.
Created attachment 668 [details] 02 command failed but actually sent
And sometimes the 02 command seems failed and the next 04 got sent in application. however, USB packet shows 02 was sent but 04 wasn't. The attachment shows a screenshot. I wish I can rebuild the application to perform more test, but MXE didn't compile on my computer.
OK, with pulseview and sigrok-cli both compiled. It seems the transmission works fine, but receiving is not working on pulseview. wait_ovl got signalled in sigrok-cli, but not in pulseview