24 lines
757 B
Bash
Executable File
24 lines
757 B
Bash
Executable File
#!/usr/bin/env bash
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# Linux USB Serial Low Latency Setup Script
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PORT="${1:-/dev/ttyUSB0}"
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if [ ! -e "$PORT" ]; then
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echo "[오류] 포트 $PORT 가 존재하지 않습니다."
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exit 1
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fi
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DEV_NAME=$(basename "$PORT")
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LATENCY_PATH="/sys/bus/usb-serial/devices/$DEV_NAME/latency_timer"
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if [ -f "$LATENCY_PATH" ]; then
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OLD_VAL=$(cat "$LATENCY_PATH")
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echo "$OLD_VAL" | sudo tee "$LATENCY_PATH" > /dev/null 2>&1 || echo 1 | sudo tee "$LATENCY_PATH"
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NEW_VAL=$(cat "$LATENCY_PATH")
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echo "[성공] USB 시리얼 포트 $PORT 지연 타이머 변경: ${OLD_VAL}ms -> ${NEW_VAL}ms"
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else
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# setserial fallback
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setserial "$PORT" low_latency 2>/dev/null || true
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echo "[정보] setserial low_latency 명령을 적용했습니다."
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fi
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