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https://github.com/cjfranko/NTP-Timeturner.git
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30 lines
969 B
Bash
30 lines
969 B
Bash
#!/bin/sh
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set -eu
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# If enabled, start a mock Teensy that exposes a PTY at /dev/ttyACM0 and streams LTC-like lines.
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if [ "${MOCK_TEENSY:-0}" = "1" ]; then
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echo "[entrypoint] Starting mock Teensy (PTY at /dev/ttyACM0)..." >&2
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# Bridge the LTC generator to a PTY that looks like a Teensy serial port.
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# Left side runs the generator, right side is a PTY linked to /dev/ttyACM0
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socat -d -d -lf /dev/stderr EXEC:'/usr/local/bin/ltc-gen.sh',pty,ctty,echo=0,raw PTY,link=/dev/ttyACM0,raw,echo=0 &
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SOCAT_PID=$!
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# Wait briefly for the PTY to appear
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i=0
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while [ $i -lt 50 ]; do
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if [ -e /dev/ttyACM0 ]; then
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break
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fi
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i=$((i+1))
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sleep 0.1
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done
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if [ ! -e /dev/ttyACM0 ]; then
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echo "[entrypoint] WARNING: Failed to create /dev/ttyACM0 (mock Teensy)" >&2
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else
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export HACI_SERIAL_PORT=/dev/ttyACM0
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echo "[entrypoint] Using mock serial at $HACI_SERIAL_PORT" >&2
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fi
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fi
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# Run the requested command (default: get-haci)
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exec "$@"
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