In Wavecom module, can it query the signal quality in data mode? I suggest the customer should send +++ to quit data mode and enter into AT mode, then send at+csq to query it. but the customer think it has some problems when transmisting gprs data. the customer want to query the sinal quality offten.
I also suggest that use the second serial port, but the customer H/W is designed compelte.
I suggest that they use Mux protocol, but I think it is difficulty for they to use it.
besides above, is it another mothod to complete the function as the title?