{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Memory dump from GDB\n",
    "# (gdb) x/512xb 0x00804000\n",
    "memory_dump = \"\"\"\n",
    "0x804000:       0x39    0x92    0x9a    0xfe    0x80    0xff    0xc0    0xee\n",
    "0x804008:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "0x804010:       0x10    0x40    0x80    0x00    0xff    0xff    0xff    0xff\n",
    "0x804018:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "0x804020:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "0x804028:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "0x804030:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "0x804038:       0xff    0xff    0xff    0xff    0xff    0xff    0xff    0xff\n",
    "\"\"\""
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import struct\n",
    "\n",
    "DEFAULTS = {\n",
    "\t'BOD33 Disable': 0x1,\n",
    "\t'BOD33 Level': 0x1C,\n",
    "\t'BOD33 Action': 0x1,\n",
    "\t'BOD33 Hysteresis': 0x2,\n",
    "\t'NVM BOOTPROT': 0xF,\n",
    "\t'SBLK': 0x0,\n",
    "\t'PSZ': 0x0,\n",
    "\t'RAM ECCDIS': 0x1,\n",
    "\t'WDT Enable': 0x0,\n",
    "\t'WDT Always-On': 0x0,\n",
    "\t'WDT Period': 0xB,\n",
    "\t'WDT Window': 0xB,\n",
    "\t'WDT EWOFFSET': 0xB,\n",
    "\t'WDT WEN': 0x0,\n",
    "\t'NVM LOCKS': 0xFFFFFFFF\n",
    "}\n",
    "\n",
    "# def extract_bits(value, offset, mask):\n",
    "# \treturn (value >> offset) & mask\n",
    "\n",
    "def extract_bits(value, start, end):\n",
    "\tmask = (1 << (end - start + 1)) - 1\n",
    "\treturn (value >> start) & mask\n",
    "\n",
    "\n",
    "def decode_user_row(memory_dump):\n",
    "\t# Extract only the hexadecimal values from the memory dump\n",
    "\thex_values = ''.join(line.split(':')[1].strip().replace(' ', '') for line in memory_dump.strip().split('\\n'))\n",
    "\thex_values = hex_values.replace('0x', '').replace('\\n', '')\n",
    "\t\n",
    "\t# Convert the cleaned hex string to bytes\n",
    "\tmemory_bytes = bytes.fromhex(hex_values)\n",
    "\t\n",
    "\t# Convert bytes to 32-bit words\n",
    "\t# words = struct.unpack('<8I', memory_bytes[:32])\n",
    "\twords = struct.unpack('<8I', memory_bytes[:32])\n",
    "\t\n",
    "\tsettings = {\n",
    "\t\t'BOD33 Disable': extract_bits(words[0], 0, 0),\n",
    "\t\t'BOD33 Level': extract_bits(words[0], 1, 8),\n",
    "\t\t'BOD33 Action': extract_bits(words[0], 9, 10),\n",
    "\t\t'BOD33 Hysteresis': extract_bits(words[0], 11, 14),\n",
    "\t\t'BOD12 Calibration': extract_bits(words[0], 15, 25),\n",
    "\t\t'NVM BOOTPROT': extract_bits(words[0], 26, 29),\n",
    "\t\t'SBLK': extract_bits(words[1], 0, 3),\n",
    "\t\t'PSZ': extract_bits(words[1], 4, 6),\n",
    "\t\t'RAM ECCDIS': extract_bits(words[1], 7, 7),\n",
    "\t\t'WDT Enable': extract_bits(words[1], 16, 16),\n",
    "\t\t'WDT Always-On': extract_bits(words[1], 17, 17),\n",
    "\t\t'WDT Period': extract_bits(words[1], 18, 21),\n",
    "\t\t'WDT Window': extract_bits(words[1], 22, 25),\n",
    "\t\t'WDT EWOFFSET': extract_bits(words[1], 26, 29),\n",
    "\t\t'WDT WEN': extract_bits(words[1], 30, 30),\n",
    "\t\t'NVM LOCKS': words[2],\n",
    "\t\t'User Page': words[3]\n",
    "\t}\n",
    "\treturn settings\n",
    "\n",
    "\n",
    "\n",
    "def display_user_row_settings(settings):\n",
    "\tprint(\"SAME54 User Row Settings (Current vs Default):\")\n",
    "\tprint(\"-\" * 50)\n",
    "\tfor key, value in settings.items():\n",
    "\t\tif key in DEFAULTS:\n",
    "\t\t\tif value != DEFAULTS[key]:\n",
    "\t\t\t\tprint(f\"{key:15}: 0x{value:X} (Default: 0x{DEFAULTS[key]:X}) *DIFFERENT*\")\n",
    "\t\t\telse:\n",
    "\t\t\t\tprint(f\"{key:15}: 0x{value:X} (Default: 0x{DEFAULTS[key]:X})\")\n",
    "\t\telse:\n",
    "\t\t\tprint(f\"{key:15}: 0x{value:X}\")\n",
    "\n",
    "\n",
    "\n",
    "# Decode the memory dump\n",
    "decoded_settings = decode_user_row(memory_dump)\n",
    "\n",
    "# Display the formatted settings\n",
    "display_user_row_settings(decoded_settings)\n"
   ]
  }
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