It doesn’t seem clear to me from the PTS if multiple key pad presses (and releases) can be detected independently using AT+CMER=,1 and reading the subsequent responses - +CKEV xx,y. For example, suppose you press a key on the pad and then some time later, press another key (i.e. there are now two pads being pressed). Will both respond with the appropriate +CKEV xx,1 response?
Subsequently, if I release only one of the pads, will it respond with a +CKEV xx,0? What if I release the second one some time later, will it also respond accordingly?
Thanks you anyone who responds. I appreciate your inputs (pardon the pun!).