Forums

Error Free Protocol

Started by Jojo October 6, 2004
Hi NG,
I need a good protocol for error free communicating with my msp and a pc. It
should be a software protocol (not RS232 with parity) because it should work
on other links such as over gsm, too. What about xmodem. Can I use this
protocol for communication, too? Can somebody help please?

Thanks,
Joachim


Jojo wrote:
> Hi NG, > I need a good protocol for error free communicating with my msp and a pc. It > should be a software protocol (not RS232 with parity) because it should work > on other links such as over gsm, too. What about xmodem. Can I use this > protocol for communication, too? Can somebody help please? > > Thanks, > Joachim > >
TCP/IP I believe is supposed to be error free and is the basis for most communications these days. You can use PPP if using a Circuit Switched Data connection over GSM, or even direct with GPRS.
Jojo wrote:

> Hi NG, > I need a good protocol for error free communicating with my msp and a pc. It > should be a software protocol (not RS232 with parity) because it should work > on other links such as over gsm, too. What about xmodem. Can I use this > protocol for communication, too? Can somebody help please?
There are multiple choices. These choices differ in blocksizes or streaming, compression or not, forward errorcorrection, multipoint or master-slave and so on. Error correction is achieved by a CRC and retransmission. If error spikes are expected, a forwarsd error correction may lower the number of retransmissions. Rene -- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net
Jojo wrote:
> > I need a good protocol for error free communicating with my msp > and a pc. It should be a software protocol (not RS232 with parity) > because it should work on other links such as over gsm, too. What > about xmodem. Can I use this protocol for communication, too? Can > somebody help please?
Look up zmodem. -- Chuck F (cbfalconer@yahoo.com) (cbfalconer@worldnet.att.net) Available for consulting/temporary embedded and systems. <http://cbfalconer.home.att.net> USE worldnet address!
> on other links such as over gsm, too. What about xmodem. Can I use this
XModem is horribly inefficient (78%). For file transfers, maybe ZModem is what you want.