#!/bin/bash

# reset_nrf54l.sh — Reset nRF54L targets via OpenOCD using Raspberry Pi SWD

set -euo pipefail  # Strict mode: exit on error, undefined vars, and pipe failures

# Print a helpful message on any error, preserving the failing exit code
trap 'rc=$?; echo "❌ nRF54L reset failed (exit $rc)." >&2; exit $rc' ERR

# Default values
INTERFACE="swd0"

usage() {
  echo "Usage: $0 [-i swd0|swd1] [-h]"
  echo
  echo "Options:"
  echo "  -i <interface>   SWD interface to use: swd0 (default) or swd1"
  echo "  -h               Show this help message and exit"
  exit 1
}

# Parse arguments
while getopts "i:h" opt; do
  case "$opt" in
    i)
    INTERFACE="$OPTARG"
      ;;
    h)
      usage
      ;;
    *)
      usage
      ;;
  esac
done

# Run OpenOCD reset command
sudo openocd \
  -f ./raspberrypi-${INTERFACE}.cfg \
  -f target/nordic/nrf54l.cfg \
  -c "init" \
  -c "reset run" \
  -c "shutdown"

echo "✅ nRF54L reset issued on ${INTERFACE}."

# Success
exit 0
a