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#
# Copyright (C) 2010 Andreas Auras
#
# This file is part of the DF10CH Atmolight controller project.
#
# DF10CH Atmolight controller 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 2 of the License, or
# (at your option) any later version.
#
# DF10CH Atmolight controller 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
#
# This file is part of the DF10CH setup program
#
import array
import fileinput
import string
class FirmwareFlashError(Exception):
def __init__(self, msg = None):
self.message = msg
def __str__(self):
return self.message
class FlashPage:
def __init__(self, addr, pageSize):
self.pageSize = pageSize
self.baseAddr = addr - addr % pageSize
self.data = array.array('B', [ 0xFF ] * pageSize)
def insert(self, addr, value):
self.data[addr % self.pageSize] = value
def verify(self, data):
for i in range(self.pageSize):
if data[i] != self.data[i]:
raise FirmwareFlashError("verify of flash data against firmware fails at {0:04X}: {1:02X} <> {2:02X}".format(self.baseAddr + i, data[i], self.data[i]))
def __str__(self):
s = "{0:04X}: ".format(self.baseAddr)
for v in self.data:
s = s + "{0:02X} ".format(v)
return s
class FlashMem:
def __init__(self, fileName, pageSize, targetInfoMustExist = False):
self.pageSize = pageSize
self.pageList = list()
self.lastLookupPage = None
self.target = None
self.version = None
self.loadFromHexFile(fileName)
if targetInfoMustExist and (not self.target or not self.version):
raise FirmwareFlashError("no target and/or version information found!")
def getPageForAddr(self, addr):
baseAddr = addr - addr % self.pageSize
if self.lastLookupPage and self.lastLookupPage.baseAddr == baseAddr:
return self.lastLookupPage;
for p in self.pageList:
if p.baseAddr == baseAddr:
self.lastLookupPage = p
return p
return None
def insert(self, addr, value):
p = self.getPageForAddr(addr)
if not p:
p = FlashPage(addr, self.pageSize)
self.pageList.append(p)
p.insert(addr, value)
def loadFromHexFile(self, fileName):
file = None
try:
file = fileinput.FileInput(fileName)
for line in file:
line = string.rstrip(line)
lineLen = len(line)
if not lineLen:
continue
lineType = line[0:1]
if lineType == "#":
continue
if lineType == "@":
try:
self.target, self.version = string.split(line[1:])
except:
raise FirmwareFlashError()
continue
if lineLen < 9 or lineType != ":":
raise FirmwareFlashError()
try:
n = int(line[1:3], 16)
addr = int(line[3:7], 16)
type = int(line[7:9], 16)
except:
raise FirmwareFlashError()
if type != 0:
break
if n > 0:
if lineLen < (9 + 2 * n):
raise FirmwareFlashError()
for i in range(n):
try:
data = int(line[i * 2 + 9: i * 2 + 11], 16)
except:
raise FirmwareFlashError()
self.insert(addr + i, data)
except IOError as err:
raise FirmwareFlashError("could not read firmware file '{0}': {1}".format(fileName, err.__str__()))
except FirmwareFlashError:
raise FirmwareFlashError("could not read firmware file '{0}': syntax error at line {1}".format(fileName, file.lineno()))
finally:
if file:
file.close()
if __name__ == "__main__":
m = FlashMem("10ch_usb_ctrl.hex", 16)
print "target:", m.target, "version:", m.version
for p in m.pageList:
print p
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