I have successfully connected a terminal android app to the obd port of my car. And tried dry run of many at commands, many are working as expected.
But ATMA (AT command to Monitor All) is not responding. Trying to view all the can communication.
Whenever this command is sent via terminal app, the response provided is OK and then again prompt for next command.
Any thing i am missing here?
edit1- car is ford figo diesel model, connected to ELM327 using this app
Did you set the protocol for the chip to monitor on? e.g. ATSP5 for KWP-2000 or ATSP0 for "best guess". What about checking the headers as well - ATH1?
I use the following string of commands to monitor my full KWP bus, which is obviously different from CAN, but is similar enough that it might be of use:
ATI -- check connection from app to scan tool
ATH1 -- Print headers
ATAL -- Allow "long" messages ( > 7 bytes)
ATSP0 (or ATSPX, where X is the protocol number) -- Sets the protocol. 0 is "guess"
ATMA -- Monitor all
You may have also bought a clone of the ELM327 chip - I have found, from personal experience, that a lot of the cheap clones do not offer the full command set. It would have to be a very very bad clone for it not to suppose ATMA!
