#!/bin/bash

# erase_all.sh — Erase entire Flash on nRF52 via OpenOCD

set -e  # Exit on error

# Default interface is swd0
INTERFACE="swd0"

# Parse command line argument for SWD interface
while getopts "i:" opt; do
  case "$opt" in
    i)
      if [[ "$OPTARG" == "swd0" || "$OPTARG" == "swd1" ]]; then
        INTERFACE="$OPTARG"
      else
        echo "Invalid interface: $OPTARG"
        echo "Usage: $0 [-i swd0|swd1]"
        exit 1
      fi
      ;;
    *)
      echo "Usage: $0 [-i swd0|swd1]"
      exit 1
      ;;
  esac
done

# Run OpenOCD command for full chip erase
sudo openocd \
  -f ./raspberrypi-${INTERFACE}.cfg \
  -f target/nrf52.cfg \
  -c "init" \
  -c "nrf52_recover" \
  -c "reset halt" \
  -c "nrf5 mass_erase" \
  -c "shutdown"

echo "✅ Device erase complete."