c500e75417
- Add pulseaudio in system mode - Add alsactl restore with correct mixer state from Aether - Add x6200-control package (I2C hardware control library) - Audio chain: pulseaudio -> x6200_control_init -> voice_rec -> speaker
31 lines
847 B
Bash
Executable File
31 lines
847 B
Bash
Executable File
#!/bin/sh
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# i2c_keepalive.sh — X6200 AXP PMU keepalive
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#
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# The X6200 uses an AXP PMU on I2C bus 0, address 0x72.
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# Without periodic I2C traffic the unit powers off after ~180s.
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# This script sends a combined write+read transaction every second.
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#
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# Requires: i2c-tools (i2ctransfer)
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BUS=0
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ADDR=0x72
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INTERVAL=1
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# Only allow one instance
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if pidof -x "$(basename "$0")" >/dev/null 2>&1; then
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COUNT="$(pidof -x "$(basename "$0")" | wc -w)"
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[ "$COUNT" -gt 1 ] && { echo "[keepalive] already running"; exit 0; }
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fi
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trap 'exit 0' INT TERM
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# One-time kick at startup
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i2ctransfer -y "$BUS" w4@"$ADDR" 0xFF 0xFE 0x02 0x80 >/dev/null 2>&1
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i2ctransfer -y "$BUS" w4@"$ADDR" 0xFF 0xFE 0x03 0x80 >/dev/null 2>&1
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# Main keepalive loop
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while :; do
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i2ctransfer -y "$BUS" w2@"$ADDR" 0x20 0x00 r1@"$ADDR" >/dev/null 2>&1
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sleep "$INTERVAL"
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done
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