I got the TelitSerialPortMux program from ts_support and the FTDI “vcom” (virtual serial port, not the direct access) driver.
Running on Windows XP home with the new V3 USB board. I’ve gotten python scripts to work, by hooking an LED between GPIO6 and ground and making it blink. However, the CMUX mode doesn’t seem to work at all. The Telit program simply alternates between “Connecting” and “Error”, even after the script starts executing. I can see that the module went to CMUX mode, as I see a bunch of binary data when I switch back to hyperterminal and turn the module off, the serial port mux program just won’t connect.
If everyone else has gotten this working, that’s useful information too! If so, let me know what firmware you’re running (AT+CGMR) and any steps you had to take to make it work.
I am having this problem as well… It seems to be caused by the onboard USB controller. Also looks like the CMUX feature only works with the beta firmware 07.02.402 from http://www.roundsolutions.com/techdocs/
Anybody get CMUX working with a GM862-GPS USB Evaluation Board?
Its really sensative. I have to stop it from entering the python script by sending an at command normally. Then switch to the virtual com port and reconnect (using RSTERM from round solutions) It works as far as I can tell. I can run a script with at#execscr but I really need the debug to go to one terminal and the ser data to go to my other monitoring program that passes it to another serial port to talk to a piece of equipment. Ok so I’m stretching things but seriously Telit needs to work on getting more rock solid development tools worked out.