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cs140e-20win's Issues

Can't get blink program from lab 0 to work

I'm trying to follow the instructions for lab 0, and can't step 2 to work. I copied all the files to the SD card as instructed, but nothing happens from the Pi. I also tried blink-actled.bin as the kernel, and also nothing happens.

I installed Raspberry Pi OS on a separate SD card, and I can boot up into that. I can get an LED to blink using the Python GPIO library, so it shouldn't be a problem with my hardware or wiring. I also got part 1 working (powering an LED directly).

Has anyone gotten lab 0 to work? If so, can you post the contents of your SD card?

Couldn't open tty port </dev/ttyS3> on WSL

I refer to PR #2.

I am running Ubuntu 20.04 on WSL.

I have installed the CP210x USB to UART Bridge VCP Drivers and checked on Device Manager: the USB to UART bridge is indeed COM3.

However, running the command pi-install /dev/ttyS3 labs/0-blink/part1/blink-pin20.bin gives the following error:

support.c:open_tty_raw:78:couldn't open tty port </dev/ttyS3>
support.c:open_tty:122:retrying
support.c:open_tty_raw:78:couldn't open tty port </dev/ttyS3>
support.c:open_tty:122:retrying
support.c:open_tty_raw:78:couldn't open tty port </dev/ttyS3>
support.c:open_tty:122:retrying
support.c:open_tty_raw:78:couldn't open tty port </dev/ttyS3>
support.c:open_tty:122:retrying
support.c:open_tty_raw:78:couldn't open tty port </dev/ttyS3>
support.c:open_tty:122:retrying
support.c:open_tty:126:PANIC:could not open after 5 tries.

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