slweasel2002 wrote:
> [...]
> Is there a method in Linux to record the Serial Port I/O from ttyAM1
> to a log file?
You can try adding "kdebug 7" to the list of pppd options.
This should have the pppd module dump the contents of
both Tx and Rx packets for you. This way you will be able
to see if the packets are just horribly mangled.
In another response, I read that when connected to a PC
you got the familiar {{{{{{ ppp packets when you made
the connection with a terminal emulator. Try using your
breakout box to prune the connection between the PC and
the GPRS modem to Gnd/TxD/RxD, just like the ts7200 and
see if you still see the ppp packets. If you do, then
the problem is all inside the ts7200, if not then add
jumpers to the modem connector (CTS<->RTS, DSR<->DTR etc)
until you see the packets again. Then with the same
jumpers in place connect up to the ts7200.
> Also I was assuming that if I could send the atd*99***1# command and
> get OK back, then the Serial communication is OK. But maybe after
> the data session is established the flow control is required by the
> modem.?
I have seen that happen frequently. Many AT command parsers
ignore flow control, or handle it "differently" from the data
phase. Often the data paths inside the modem are totally
different between command parsing and data movement.
--
Andy Warner Voice: (612) 801-8549 Fax: (208) 575-5634
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