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Disasm / usb-otg-workspace

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How to properly test 'serial' example? (NucleoF429ZI) #4

Closed JOE1994 closed 4 years ago

JOE1994 commented 4 years ago

First of all, thank you so much for sharing your hard work! :cat:

I'm having some trouble testing the serial example with my NucleoF429ZI board (I'm a noob in embedded systems :crying_cat_face: ).

I properly initialized vid & pid from lsusb output. I used minicom to connect to ttyACM0, and typed a bunch of lowercase letters from minicom. I expected to see uppercase letters echoed back, but couldn't see anything printed on my minicom screen.

May I ask how you successfully tested the serial example on the NucleoF429ZI board?

Thank you so much :+1:

Disasm commented 4 years ago

Hmm, that's strange. Could you try the same with screen /dev/ttyACM1 115200? Also check that you build the firmware with --release.

I usually only do stress testing with https://github.com/mvirkkunen/serial-threadmark

Disasm commented 4 years ago

Also /dev/ttyACM0 can be used by on-board STLINK programmer, check that you use the one from the serial USB

JOE1994 commented 4 years ago

Also /dev/ttyACM0 can be used by on-board STLINK programmer, check that you use the one from the serial USB

When I run $ ls /dev/tty*, other than bunch of /dev/ttyS*s, I can only find /dev/ttyACM0 and nothing else :crying_cat_face:. Running the screen utility doesn't work for me either.

I currently only have one USB cable connected to my board. When testing the example, did you have any additional wire connections from the board to your pc ?

Disasm commented 4 years ago

I use two cables: one connected to the onboard stlink and another one connected to the microUSB connector on the opposite side of the board. I don't know why, but if I connect only the second one, the board is not powered and doesn't work.

JOE1994 commented 4 years ago

I use two cables: one connected to the onboard stlink and another one connected to the microUSB connector on the opposite side of the board. I don't know why, but if I connect only the second one, the board is not powered and doesn't work.

It works now! :smiley: After connecting the second cable, I can see /dev/ttyACM1 and the https://github.com/mvirkkunen/serial-threadmark works as expected! Thank you so much for your help :+1: You saved my day!