I am trying to use it on an arduino mega with the GPRS Tx and Rx pins connected to Serial1.
But it appears that the only way I can do this is to go into the library source and change these defines:
#define _GSM_TXPIN_ 2
#define _GSM_RXPIN_ 3
It is a bit of a nuisance!
It would be nicer if there was a similar library with the same functionality and nice collection of example sketches which you could just pass in the Tx and Rx pins you want to use through a constructor or the begin(...) function.
Oh, it looks like it has some additional functions:
int getString( char *pre_string, char *post_string, char *buffer, int length);
boolean find(char *target);
boolean findUntil(char *target, char *terminate);
Still it seems to me it would be a lot more user friendly to just pass in a Stream object to the GSM class constructor and create a HWSerial objects around it internally.
Thus making this library work like most other libraries for serial devices seem to all work.
Why can't HWSerial GSM::_cell; just be Stream *GSM::_cell;
Because someone hacked together something that worked, and then said "F**k it. Good enough". When clearly it isn't. Try using that shield on a Mega, if you want to experience real frustration.
