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# Program to read and format binary files.
# 'rb' - read binary mode
# Use of struct.unpack
# Read 64k of memory locations.
# Write only 3 X 256 byte pages.
# Calling functions from a class.
import sys
import re
import commands
import struct
class rbin:
def file_op(self,rfile):
self.readfile = rfile
self.wfile = open('loadmem.txt', 'w')
for line in self.readfile.readlines():
for cnt in range (0,4096,1):
x = cnt*16
test = line[x:x+16]
if (len(test) == 14):
magic = struct.unpack("<14b",test)
for i in range(0,14,1):
self.wfile.write("0x%X\n" % (magic[i]))
else:
magic = struct.unpack("<16b",test)
for i in range(0,16,1):
if ((x <= 498) | ((x <= 65520) & (x >= 65280))):
self.wfile.write("0x%X\n" % (magic[i]))
self.readfile.close()
self.wfile.close()
# Call Class
T = rbin()
# Call function from class
T.file_op(open('reg.bin','rb'))
Other reference codes
Open and read file as a single string.
Command line arguments lists as string with ‘sys.argv’. Glob module.
Classes, global variables and functions.
Open and write file. Generate diamond pattern.
Specify files to be written from the command line.
Writes using classes and global variables. Conditional statements, string to hexadecimal conversion,. Strip off white space at end. Convert 12 bit hexadecimal values to 12 bit signed values.. Conversion from Hexadecimal to Signed Magnitude. UNIX shell commands, read lines from a text file, ‘sysargv’ command line operations, use of class and multiple functions.
Python error’s with complete code examples:-
TypeError: not all arguments converted during string formatting,
AttributeError: ** instance has no attribute **