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993a4a7c5f
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@2798 ebee16cc-31ac-478f-84a7-5cbb03baadba
106 lines
4.2 KiB
Python
106 lines
4.2 KiB
Python
# Convert binary file to a hex encoded array for inclusion in C projects
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import os
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import struct
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import sys
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import logging
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class BinToArray:
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def __init__(self):
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pass
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def ConvertFileToArray(self, strInFile, strOutFile, integerSize, ignoreBytes, endianNess):
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""" Reads binary file at location strInFile and writes out a C array of hex values
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Parameters -
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strInFile - Path and filename of binary file to convert
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strOutFile - Path and filename of output. Suggested extension is .c or .cpp
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integerSize - Size in bytes of output array elements. Array generated is always
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of type uint8, uint16, uint32. These types would need to be defined using
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typedef if they don't exist, or the user can replace the type name with the
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appropriate keyword valid for the compiler size conventions
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ignoreBytes - Number of bytes to ignore at the beginning of binary file. Helps
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strip out file headers and only encode the payload/data.
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endianNess - Only used for integerSize of 2 or 4. 'l' for Little Endian, 'b' for
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Big Endian
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"""
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# Check integerSize value
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if integerSize not in (1, 2, 4):
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logging.debug("Integer Size parameter must be 1, 2 or 4")
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return
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# endif
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# Open input file
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try:
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fileIn = open(strInFile, 'rb')
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except IOError, err:
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logging.debug("Could not open input file %s" % (strInFile))
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return
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# end try
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# Open input file
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try:
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fileOut = open(strOutFile, 'w')
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except IOError, err:
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logging.debug("Could not open output file %s" % (strOutFile))
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return
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# end try
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# Start array definition preamble
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inFileName = os.path.basename(strInFile)
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strVarType = "uint%d_t" % (integerSize * 8)
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fileOut.write("// Array representation of binary file %s\n\n\n" % (inFileName))
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fileOut.write("static %s dataArray[] = {\n" % strVarType)
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# Convert and write array into C file
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fileIn.seek(ignoreBytes)
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if integerSize == 1:
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bufChunk = fileIn.read(20)
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while bufChunk != '':
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fileOut.write(" ")
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for byteVal in bufChunk:
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fileOut.write("0x%02x, " % ord(byteVal))
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# end for
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fileOut.write("\n")
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bufChunk = fileIn.read(20)
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# end while
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else:
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if endianNess == 'l' and integerSize == 2:
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endianFormatter = '<H'
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maxWordsPerLine = 10
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elif endianNess == 'l' and integerSize == 4:
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endianFormatter = '<L'
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maxWordsPerLine = 6
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elif endianNess == 'b' and integerSize == 2:
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endianFormatter = '>H'
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maxWordsPerLine = 10
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elif endianNess == 'b' and integerSize == 4:
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endianFormatter = '>L'
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maxWordsPerLine = 6
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# endif
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bufChunk = fileIn.read(integerSize)
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i = 0
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fileOut.write(" ")
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while bufChunk != '':
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wordVal = struct.unpack(endianFormatter, bufChunk)
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if integerSize == 2:
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fileOut.write("0x%04x, " % wordVal)
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else:
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fileOut.write("0x%08x, " % wordVal)
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# endif
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i += 1
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if i == maxWordsPerLine:
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fileOut.write("\n ")
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i = 0
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# endif
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bufChunk = fileIn.read(integerSize)
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# end while
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# end if
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# Close array definition
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fileOut.write("\n };\n")
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fileIn.close()
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fileOut.close()
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if __name__ == "__main__":
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print(sys.argv[0])
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logging.basicConfig(level=logging.DEBUG)
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converter = BinToArray()
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converter.ConvertFileToArray(
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sys.argv[1], sys.argv[2], 4, 0, 'l')
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