I’m trying to develop a Cmux based app, running on a arch-specific system, and I need to get CMUX working.
Obviously I need to get hardware flow control to avoid loosing data (AT+IFC=2,2).
The problem is that whenever I start CMUX (AT+CMUX=0,0,5,127) then I completely lose contact with my modem and I can’t event start the control channel nor restart it (excepts from physically restart it, of course). I tried without flow control (and used AT+IFC=0,0 - to unset flow control on the modem) an it works, but as suspected, I get to lose characters.
Do you guys have any clues to what is wrong ? And a way to solve this ?
I hope it’s clear enough and if not, feel free to ask.
Thanks in advance.
Modem version :
AT+WHWV = Hardware Version 4.03
AT+CGMR = 663c00gg.Q2686H 1961896 122407 14:45
Modem settings :