From 24cc217d10c46f37eab01ff63aeac714d1d19c2f Mon Sep 17 00:00:00 2001 From: Michael Ossmann Date: Sun, 27 May 2012 22:57:56 -0600 Subject: lpcvtcksum: a simple Python program for generating LPC43xx vector table signatures --- scripts/lpcvtcksum | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100755 scripts/lpcvtcksum diff --git a/scripts/lpcvtcksum b/scripts/lpcvtcksum new file mode 100755 index 0000000..27dc8a7 --- /dev/null +++ b/scripts/lpcvtcksum @@ -0,0 +1,51 @@ +#!/usr/bin/python +# +# Compute and insert the vector table checksum required for booting the +# LPC43xx and some other NXP ARM microcontrollers. +# +# usage: lpcvtcksum firmware.bin +# +# This file is part of the libopencm3 project. +# +# Copyright (C) 2012 Michael Ossmann +# +# This library is free software: you can redistribute it and/or modify +# it under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This library is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with this library. If not, see . + +import sys, struct + +binfile = open(sys.argv[1], 'r+b') +rawvectors = binfile.read(32) +vectors = list(struct.unpack('