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uart-console: document the venv interpreter needed under sudo

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Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
Dennis Brentjes
2026-09-30 17:39:32 +00:00
parent 48cd3555f6
commit fff16a85c4
1 changed files with 4 additions and 2 deletions
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scripts/uart-console.py
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@@ -10,14 +10,16 @@ The bring-up diagnostics (w5100_selftest / w5100_udptest / w5100_regdump) just
stream a status line on the same port, so this works for those too. stream a status line on the same port, so this works for those too.
Usage: Usage:
sudo ./scripts/uart-console.py # /dev/ttyUSB1 @ 115200 sudo /opt/venv/bin/python3 scripts/uart-console.py # /dev/ttyUSB1 @ 115200
sudo ./scripts/uart-console.py /dev/ttyUSB0 115200 sudo ./scripts/uart-console.py /dev/ttyUSB0 115200
./scripts/uart-console.py --send "udp broadcast hi" # one-shot, no tty ./scripts/uart-console.py --send "udp broadcast hi" # one-shot, no tty
./scripts/uart-console.py --read 5 # just dump 5s of output ./scripts/uart-console.py --read 5 # just dump 5s of output
Channel A of the FT2232H is the MPSSE/iceprog port; the UART is channel B, which Channel A of the FT2232H is the MPSSE/iceprog port; the UART is channel B, which
is normally the SECOND ttyUSB (…USB1). Needs read/write on the device node — is normally the SECOND ttyUSB (…USB1). Needs read/write on the device node —
run under sudo, or add yourself to the port's group. run under sudo, or add yourself to the port's group. In the devcontainer
pyserial lives in /opt/venv, which plain `sudo python3` does NOT see — invoke
`sudo /opt/venv/bin/python3` explicitly or you just get "needs pyserial".
Quit the interactive console with Ctrl-] (or Ctrl-C). Quit the interactive console with Ctrl-] (or Ctrl-C).
""" """