This is exactly what i was looking for....
For those following, the \x00 added at the end of the
packet is just imaginary and represents
in the meantime, I made the following that just
'decobs' a series of packets (only 8-10 bytes) that
are coming in over the com port. (my incoming packets
also begin with x00 for some reason)
It accurately decodes that data stream (same result as
when I esc out and connect with the dev kit program)
I need to use what you have given me to make it
scalable for size
#!/usr/bin/env python
#MJC 20051004
baudrate = 115200
port = 'com4'
echo = 1
convert_outgoing_cr = 1
import sys, serial, threading
s = serial.Serial(port,baudrate)
def reader():
"""loop forever and copy serial->console"""
cobspacket = [0,0,0,0,0,0,0,0,0,0]
while 1:
i = 0
cobschar = s.read()
cobspacket[i] = ord(cobschar)
if cobschar == '\x00':
cobschar = s.read()
cobspacket[i] = ord(cobschar)
codebyte = int(cobspacket[i])
while cobschar != '\x00':
if i == codebyte:
d = 0
codebyte = codebyte +
cobspacket[i]
else:
d = cobspacket[i]
if i>0:
sys.stdout.write('%02X' % (d))
i+=1
cobschar = s.read()
cobspacket[i] = ord(cobschar)
sys.stdout.write('\n')
def writer():
"""loop forever and copy console->serial"""
while 1:
c = getkey()
if c == '\x1b': break #exit on esc
s.write(c) #send character
if convert_outgoing_cr and c == '\r':
s.write('\n')
if echo: sys.stdout.write('\n')
print "--- Mikey's interface --- type ESC to quit"
#start serial->console thread
r = threading.Thread(target=reader)
r.setDaemon(1)
r.start()
#enter console->serial loop
writer()
print "\n--- exit ---"
--- Alan Gauld <[EMAIL PROTECTED]> wrote:
> > I am a noob to converting pointers in C++ to
> arrays in
> > python, although the first time I see it done, I
> will
> > have no problem. Can you help converting the below
> > (what I think is the 'decoder' section) to python?
>
> It won't be working code but I think this is whats
> happening...
>
> > UINT CCobsPackets::UnStuffData(unsigned char *src,
> > unsigned char *dst, UINT length)
>
> def UnStuffData(src,dst,len):
-snip-
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