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#!/usr/bin/python
#
# spreadspace pic utils
#
#
# Copyright (C) 2011 Christian Pointner <equinox@spreadspace.org>
#
# This file is part of spreadspace pic utils.
#
# spreadspace pic utils is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# spreadspace pic utils 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with spreadspace pic utils. If not, see <http://www.gnu.org/licenses/>.
#
'''spreadspace simple pic downloader.'''
VERSION = '0.1'
def open_serial(device, baud):
import os
import tty
import termios
baudrates = { 50: termios.B50, 75: termios.B75, 110: termios.B110, 134: termios.B134,
150: termios.B150, 200: termios.B200, 300: termios.B300, 600: termios.B600,
1200: termios.B1200, 1800: termios.B1800, 2400: termios.B2400, 4800: termios.B4800,
9600: termios.B9600, 19200: termios.B19200, 38400: termios.B38400,
57600: termios.B57600, 115200: termios.B115200, 230400: termios.B230400 }
baudreate = termios.B19200
try:
baudrate = baudrates[int(baud)]
except (KeyError, ValueError):
print "ERROR: invalid baudrate"
sys.exit(3)
try:
dev = os.open(device, os.O_RDWR | os.O_NOCTTY)
tty.setraw(dev, termios.TCSAFLUSH)
tio = termios.tcgetattr(dev)
tio[4] = tio[5] = baudrate
termios.tcsetattr(dev, termios.TCSAFLUSH, tio)
termios.tcflush(dev, termios.TCIFLUSH)
return dev
except OSError, msg:
print "ERROR: opening serial device: %s" % msg
sys.exit(3)
except termios.error, msg:
print "ERROR: configuring serial device: %s" % msg
sys.exit(3)
def load_hex(file):
import os
fin = file
if fin == '-':
fin = sys.stdin
elif not os.path.isfile(fin):
print "ERROR: File not found: %s" % fin
sys.exit(1)
data = {}
ih = IntelHex(fin)
for a in ih.addresses():
if a/2 not in data.keys():
data[a/2] = 0
if a%2 == 0:
data[a/2] += ih[a]
else:
data[a/2] += (ih[a] << 8)
return data
if __name__ == '__main__':
import getopt
import sys
from intelhex import IntelHex
usage = '''spreadspace simple pic downloader.
Usage:
python downloader.py [options] INFILE
Arguments:
INFILE name of hex file for downloading.
Use '-' for reading from stdin.
Options:
-h, --help this help message.
-v, --version version info.
--device=N the serial port to use (default: /dev/ttyUSB0).
--baud=N baudrate to use (default: 19200).
'''
device = "/dev/ttyUSB0"
baudrate = 19200
try:
opts, args = getopt.getopt(sys.argv[1:], "hv",
["help", "version", "device=", "baud="])
for o, a in opts:
if o in ("-h", "--help"):
print(usage)
sys.exit(0)
elif o in ("-v", "--version"):
print(VERSION)
sys.exit(0)
elif o in ("--device"):
device = a
elif o in ("--baud"):
baudrate = a
if not args:
raise getopt.GetoptError('Input file is not specified')
if len(args) > 1:
raise getopt.GetoptError('Too many arguments')
except getopt.GetoptError, msg:
print "ERROR: %s" % msg
print usage
sys.exit(2)
dev = open_serial(device, baudrate)
data = load_hex(args[0])
addrs = data.keys()
addrs.sort()
for a in addrs:
print "%05d: %04X" % (a, data[a])
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