After AT+CMUX=0,0<CR> modem responds "OK" but ignores any SABM(0) commands (even repeated 10 times) until it receives <LF> character. then it works Sending AT+CMUX=0,0<CR><LF> doesnt help To make MUX working I have to: Send AT+CMUX=0,0<CR> (modem responds OK) Wait 0,5 sec Send <LF> Send SABM(0) and other MUX session My firmware is 10.00.002 Exactly the same Code for my application works with Sagem HiLoNC and uBLOX LEON without mentioned problem.
SOLVED You have to fix baudrate with IPR=value Autobauding and CMUX dont coexist well Anyway its a bug because while entering any binary protocol DATA/GPRS/MUX current baudrate should be frozen, and autobauding should be suspended by firmware.
Dear Wojciech, you are right IPR must be fixed. Unfortunatly this limitation was removed from latest CMUX User Guide. We will fix this on next User Guide.
After AT+CMUX=0,0<CR>
modem responds "OK" but
ignores any SABM(0) commands (even repeated 10 times)
until it receives <LF> character.
then it works
Sending AT+CMUX=0,0<CR><LF> doesnt help
To make MUX working I have to:
Send AT+CMUX=0,0<CR>
(modem responds OK)
Wait 0,5 sec
Send <LF>
Send SABM(0) and other MUX session
My firmware is 10.00.002
Exactly the same Code for my application
works with Sagem HiLoNC and uBLOX LEON
without mentioned problem.
SOLVED
You have to fix baudrate with IPR=value
Autobauding and CMUX dont coexist well
Anyway its a bug because while entering
any binary protocol DATA/GPRS/MUX
current baudrate should be frozen,
and autobauding should be suspended by firmware.
Dear Wojciech,
you are right IPR must be fixed. Unfortunatly this limitation was removed from latest CMUX User Guide.
We will fix this on next User Guide.