I want to use the Arduino Zero board to send data via a gsm module using the MQTT protocol. However the Zero does not support the software serial library which the code I have found and modified does. How can I change this to work with the Zero?
The main sketch uses this line
SoftwareSerial fonaSS = SoftwareSerial(FONA_TX, FONA_RX);
and calls the function fonaSS in a file called fonahelper.cpp
extern SoftwareSerial fonaSS;
to run further processes e.g.
How would I change this to work with the hardware serial?