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@rvalles
executable file 92 lines (91 sloc) 2.797 kb
#!/usr/bin/python
# -*- coding: utf-8 -*-
#Keep python2 working
from __future__ import division #1/2 = float, 1//2 = integer
from __future__ import print_function #print("blah", file=whatever)
#Keep python2 working end
from optparse import OptionParser
import serial
import sys
#import struct
import re
lineregex = re.compile(r'0x(?:[0-9A-F]{8})((?: [0-9A-F]{2}){1,16})')
def get2menu(ser,verbose):
if verbose:
print("Waiting for a prompt...", file=sys.stderr)
while True:
ser.write(" !".encode())
if(ser.read(1)==']' and ser.read(1)==':'):
while ser.read(256):
pass
if verbose:
print("Ok.", file=sys.stderr)
return
def memreadblock(ser,addr,size):
while ser.read(1):
pass
ser.write('r'.encode())
while not (ser.read(1)=='0' and ser.read(1)=='x'):
pass
ser.write(("%x"%addr).encode())
ser.write('\r'.encode())
while not (ser.read(1)=='.' and ser.read(1)=='.' and ser.read(1)=='.'):
pass
ser.write('3'.encode())
while not ser.read(1)==')':
pass
ser.write(str(size).encode())
ser.write('\r'.encode())
buf=''
m = False
while not m:
m = lineregex.match(ser.readline().strip())
while m:
bytes = [chr(int(x, 16)) for x in m.group(1)[1:].split(' ')]
buf+=''.join(bytes)
m = lineregex.match(ser.readline().strip())
return buf
def memreadblock2file(ser,fd,addr,size):
while True:
buf=memreadblock(ser,addr,size)
if len(buf)==size:
break
sys.stderr.write('!')
sys.stderr.write('.')
fd.write(buf)
return
def memread(ser,path,addr,size,verbose):
#bs=1024
bs=10000 #10000 is usually the maximum size for an hexdump on brnboot.
get2menu(ser,verbose)
if path == "-":
fd=sys.stdout
else:
fd=open(path,"wb")
while 0<size:
if size>bs:
memreadblock2file(ser,fd,addr,bs)
size-=bs
addr+=bs
else:
memreadblock2file(ser,fd,addr,size)
size=0
fd.close()
return
def main():
optparser = OptionParser("usage: %prog [options]",version="%prog 0.1")
optparser.add_option("--verbose", action="store_true", dest="verbose", help="be verbose", default=False)
optparser.add_option("--serial", dest="serial", help="specify serial port", default="/dev/ttyUSB0", metavar="dev")
optparser.add_option("--read", dest="read", help="read mem to file", metavar="path")
#optparser.add_option("--write", dest="write",help="write mem from file", metavar="path")
optparser.add_option("--addr", dest="addr",help="mem address", metavar="addr")
optparser.add_option("--size", dest="size",help="size to copy", metavar="bytes")
(options, args) = optparser.parse_args()
if len(args) != 0:
optparser.error("incorrect number of arguments")
ser = serial.Serial(options.serial, 115200, timeout=1)
if options.read:
memread(ser,options.read,int(options.addr,0),int(options.size,0),options.verbose)
return
if __name__ == '__main__':
main()
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