noise sub mode

run_do1_noise_subtract.sh

@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+BIN="${BIN:-./main.exe}"
+TTY_PATH="${TTY_PATH:-/tmp/ttyADC_data}"
+LIB_DIR="${LIB_DIR:-$HOME/.local/lib}"
+NOISE_AVG_STEPS="${NOISE_AVG_STEPS:-}"
+
+if [[ ! -x "$BIN" ]]; then
+  echo "Binary '$BIN' not found or not executable. Run ./build_main.sh first." >&2
+  exit 1
+fi
+
+if [[ -z "$NOISE_AVG_STEPS" ]]; then
+  echo "Set NOISE_AVG_STEPS to a positive integer, for example: NOISE_AVG_STEPS=16" >&2
+  exit 1
+fi
+
+if ! [[ "$NOISE_AVG_STEPS" =~ ^[0-9]+$ ]] || [[ "$NOISE_AVG_STEPS" -eq 0 ]]; then
+  echo "NOISE_AVG_STEPS must be a positive integer, got '$NOISE_AVG_STEPS'" >&2
+  exit 1
+fi
+
+if [[ -d "$LIB_DIR" ]]; then
+  export LD_LIBRARY_PATH="${LIB_DIR}${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
+fi
+
+exec "$BIN" \
+  clock:internal \
+  internal_ref_hz:2000000 \
+  start:di_syn2_rise \
+  stop:di_syn2_fall \
+  sample_clock_hz:max \
+  range:5 \
+  duration_ms:100 \
+  packet_limit:0 \
+  do1_toggle_per_frame \
+  do1_noise_subtract \
+  "noise_avg_steps:${NOISE_AVG_STEPS}" \
+  profile:amplitude \
+  "tty:${TTY_PATH}" \
+  "$@"