add build run scripts

build_main.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+cd "$SCRIPT_DIR"
+
+CXX="${CXX:-g++}"
+OUT="${OUT:-main.exe}"
+
+CXXFLAGS=(
+  -std=c++17
+  -O2
+  -Wall
+  -Wextra
+  -pedantic
+)
+
+SOURCES=(
+  main.cpp
+  capture_file_writer.cpp
+  tty_protocol_writer.cpp
+)
+
+LDFLAGS=(
+  -ldl
+  -lutil
+  -lpthread
+)
+
+"$CXX" "${CXXFLAGS[@]}" "${SOURCES[@]}" "${LDFLAGS[@]}" -o "$OUT"
+
+echo "Built $OUT"

run_di1_group_avg.sh

@@ -0,0 +1,31 @@
+#!/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}"
+CSV_PATH="${CSV_PATH:-capture.csv}"
+SVG_PATH="${SVG_PATH:-capture.svg}"
+
+if [[ ! -x "$BIN" ]]; then
+  echo "Binary '$BIN' not found or not executable. Run ./build_main.sh first." >&2
+  exit 1
+fi
+
+exec "$BIN" \
+  clock:internal \
+  internal_ref_hz:2000000 \
+  start:di_syn2_rise \
+  stop:di_syn2_fall \
+  sample_clock_hz:max \
+  range:0.2 \
+  di1:trace \
+  di1_group_avg \
+  duration_ms:100 \
+  packet_limit:0 \
+  "tty:${TTY_PATH}" \
+  "csv:${CSV_PATH}" \
+  "svg:${SVG_PATH}" \
+  "$@"