Re: [ECOS] Redboot: [xyz]modem via TCP?

[Grant Edwards <grante@visi.com>]

On Fri, Feb 09, 2001 at 06:29:10AM -0700, Gary Thomas wrote:

> >> With Redboot, can you do [xyz]modem download via TCP instead of
> >> serial port?
> > 
> > I slapped together a Python program that uses "sx" to download
> > an S record file via TCP using xmodem protocol.  Small files
> > (less than 2K or so) work fine, but when I get up to about 2K,
> > RedBoot crashes.  I can load the large files fine via TFTP and
> > xmodem/serial.
> > 
> > Anybody else see anything like this?
> 
> I've not tried this.  If you want to share [only with me if necessary]
> the Python program, I'll give it a look-see when I get a chance.

Thanks. 

Here it is.  I didn't try any variations on protocol/frame-size
or anything.  Just the defualt x-modem mode. IP addresse and
filename are hard-coded...

========================================================================
import time
import socket
import os
import sys

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('192.168.1.21',9000))

print "connected to: ",s.getpeername()," from ",s.getsockname()

r = s.recv(1024)

print "received: ",r

if not r.startswith("RedBoot"):
    raise "No answer from RedBoot"

s.send("load -m x\r")

r = s.recv(1024)
print  "received: ",r

fd = s.fileno()
os.dup2(fd,0)
os.dup2(fd,1)

os.spawnv(os.P_WAIT,"/usr/bin/sx",("/usr/sbin/sx","-v","dataFile.srec"))

sys.stderr.write("done\n");
s.close()
========================================================================

-- 
Grant Edwards
grante@visi.com