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#!/usr/bin/env python
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# Script to test the comms and get a dump of the
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# BTECH UV-5001 mobile/base radio memory.
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#
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# It works OK on windows with python 2.7.3 and pyserial 2.7
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# It will try all comports from COM1 to COM10
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#
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# Author Pavel, CO7WT, co7wt@frcuba.co.cu, pavelmc@gmail.com
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import serial
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import struct
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import os
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import time
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fpath = "\home\jkidd"
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filename = "uv2501"
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# accesory function, jump it.
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def hexprint(data, addrfmt=None):
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"""Return a hexdump-like encoding of @data"""
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if addrfmt is None:
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addrfmt = '%(addr)03i'
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block_size = 8
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lines = len(data) / block_size
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if (len(data) % block_size) != 0:
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lines += 1
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data += "\x00" * ((lines * block_size) - len(data))
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out = ""
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for block in range(0, (len(data)/block_size)):
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addr = block * block_size
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try:
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out += addrfmt % locals()
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except (OverflowError, ValueError, TypeError, KeyError):
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out += "%03i" % addr
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out += ': '
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left = len(data) - (block * block_size)
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if left < block_size:
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limit = left
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else:
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limit = block_size
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for j in range(0, limit):
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out += "%02x " % ord(data[(block * block_size) + j])
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out += " "
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for j in range(0, limit):
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char = data[(block * block_size) + j]
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if ord(char) > 0x20 and ord(char) < 0x7E:
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out += "%s" % char
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else:
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out += "."
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out += "\n"
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return out
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def make_frame(cmd, addr, length, data=""):
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"""Pack the info in the headder format"""
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if data == "":
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return "\x06" + struct.pack(">BHB", ord(cmd), addr, length)
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else:
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return "\x06" + struct.pack(">BHB", ord(cmd), addr, length) + data
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def tx(radio, frame):
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"""Send data to radio"""
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radio.write(frame)
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def rx(radio, addr, length):
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"""Get data from the radio """
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# 1 byte ACK +
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# 4 bytes header +
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# data of length of data (as I see 0x40 = 64 bytes)
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# it's send a byte at a time, but we can read it all together
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# catching ack
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ack = radio.read(1)
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if (ack == "\x05" and addr == 0) or ack == "\x06":
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# received a correct ACK
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print("Correct ACK (0x%02x) for block: 0x%04x" % (ord(ack), addr))
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else:
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print("BAD ACK (0x%02x) for block: 0x%04x" % (ord(ack), addr))
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raise Exception, "Error"
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# Get the header
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hdr = radio.read(4)
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if len(hdr) != 4:
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print("BAD header length (%s) for block: 0x%04x" % (len(hdr), addr))
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print("Try to make the time.sleep() bigger in dump_mem")
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raise Exception, "Error"
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else:
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c, a, l = struct.unpack(">BHB", hdr)
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print("Header received:")
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print hexprint(hdr)
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if a != addr or l != length or c != ord("X"):
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print("BAD header data")
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print("cmd %s, addr %04x, length %02x" % (c, a, l))
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raise Exception, "Error"
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else:
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print("GOOD header data...")
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# Get the data
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data = radio.read(l)
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if len(data) != l:
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print("BAD data length of %s, vs. %s" % (l, length))
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raise Exception, "Error"
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else:
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print("GOOD data...")
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return data
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def do_magic():
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"""Try to get the radio y program mode and get the ident string"""
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# every byte of this magic chain must be send separatedly util
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# you get a correct answer, this will try 10 times
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magic = "\x55\x20\x15\x09\x20\x45\x4d\x02"
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tries = 10
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# do the magic
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for a in range(0, tries):
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radio.flushInput()
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for byte in magic:
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ack = radio.read(1)
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radio.write(byte)
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# wait a prudent time....
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time.sleep(0.2)
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# Now you get a x06 of ACK if all goes well
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ack = radio.read(1)
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if ack == "\x06":
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return True
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else:
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print "Attempt %s didn't work, trying again..." % a
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return False
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def do_ident(radio):
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"""Put the radio on PROGRAM mode & identify it"""
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# this is the block of good ident (less the fisrt ACK = \x06)
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#goodident = "\x01\x03\x00\x01\x07\x09\x04\x00\x00\x05\x02\x00\x57\x48\x4B"
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#goodident += "\x4A\x55\x56\x2D\x31\x36\x38\x56\x31\x39\x32\x30\x34\x55\x38"
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#goodident += "\x38\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30"
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#goodident += "\x30\x30\x30\x55"
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# lenght = 49
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goodident = "\x01\x03\x00\x01\x07\x09\x04\x00"
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goodident += "\x00\x05\x02\x00\x57\x48\x4B\x4a"
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goodident += "\x31\x36\x38\x4d\x49\x4e\x4d\x32"
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goodident += "\x39\x32\x30\x34\x55\x38\x38\x30"
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goodident += "\x30\x30\x30\x30\x30\x30\x30\x30"
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goodident += "\x30\x30\x30\x30\x30\x30\x30\x30"
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goodident += "\x55"
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# try to get the radio in program mode
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ack = do_magic()
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if ack is False:
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raise Exception,"Radio did not accept program mode"
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else:
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print("Radio answered PC query, continue...")
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# Ok, get the ident string
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ident = radio.read(49)
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# check if ident is OK
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if len(ident) == 49 and ident == goodident:
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# all ok
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print("Good Ident it's a BTECH UV-2501, ident follows")
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print(hexprint(ident))
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else:
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print("Bad/short/long radio ident: (%02i) bytes:" % len(ident))
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print("Try to makee the time.sleep() bigger in dump_mem")
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print(hexprint(ident))
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raise Exception, "Error"
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def dump_mem(radio):
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"""Get the memory map"""
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data = ""
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for addr in range(0x0000, 0x3200, 0x40):
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# sending the read request
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tx(radio, make_frame("S", addr, 0x40))
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# receiving the data and catching any errors
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time.sleep(0.5)
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try:
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d = rx(radio, addr, 0x40)
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except:
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raise Exception, "Problem receiving block %s" % addr
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print("Received block %04x" % addr)
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data += d
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return data
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def upload(radio, data):
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"""Test the upload procedure"""
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# the fun start here
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for addr in range(0x0000, 0x3200, 0x10):
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# sending the data
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tx(radio, make_frame("\x58", addr, 0x10, data[addr:addr + 0x10]))
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# receiving the response
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time.sleep(0.1)
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ack = radio.read(1)
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if (addr == 0 and ack == "\x05"):
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ack = radio.read(1)
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if ack == "\x06":
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# received a correct ACK
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print("Ok writed block block: 0x%04x" % addr)
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else:
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print("BAD ACK (0x%02x) for block: 0x%04x" % (ord(ack), addr))
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raise Exception, "Error"
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wsp = ""
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# main program
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for sp in range(1, 11):
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# try to identify valid COM ports and use them to download img of the radio
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# the IMG will be on c:\[filename].img
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try:
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radio = serial.Serial('/dev/ttyUSB0') # for windows
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except Exception, e:
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continue
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# this port works
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print " "
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print("Serial por COM%s available, traying to reach radio" % sp)
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try:
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radio.setBaudrate(9600)
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radio.setParity("N")
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radio.setTimeout(0.5)
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radio.flushInput()
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radio.flushOutput()
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except Exception, e:
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print " "
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print("Problem setting discipline on COM%s" % sp)
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radio.close()
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continue
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# ok, will try to reach radio
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do_ident(radio)
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print " "
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print("Radio Found!!!, downloading image to %s.img" % filename)
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d = dump_mem(radio)
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# save to file % dump to screen
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print " "
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print("Done, img file ready")
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fil = open(os.path.join("", filename + ".img" ), 'wb')
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fil.write(d)
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fil.close()
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# set the correct serial port
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wsp = sp
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radio.close()
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print("If download was a succsess I will wait for 2 minutes and then I will")
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print("try a upload of the same data, so, you have 2 minutes to hit CTRL+C")
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print("to abort starting from now")
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time.sleep(120)
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print("I will try an upload now, cross yur fingers")
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## test upload
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radio = serial.Serial('/dev/ttyUSB0')
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try:
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radio.setBaudrate(9600)
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radio.setParity("N")
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radio.setTimeout(0.5)
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radio.flushInput()
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radio.flushOutput()
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except Exception, e:
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raise Exception("Problem setting discipline on COM%s" % wsp)
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# open radio
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do_ident(radio)
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# check the dat is correct
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fil = open(os.path.join("", filename + ".img" ), 'rb')
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d = fil.read()
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fil.close()
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if len(d) != 0x3200:
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raise Exception("This is not the correct file, size don't match")
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upload(radio, d)
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radio.close()
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