ARDUINO MEGA 2560 SOFTWARE SERIAL PINS SERIAL

ARDUINO MEGA 2560 SOFTWARE SERIAL PINS SERIAL

My sketch is set to use hardware serial with the 'normal' wiring described above. Hopefully they will go back over the sketches and correct them (including comments!) Same comment and code errors exist in them. It was missing a line to enable hardware serial properly.ĭon't waste your time with the 'echo' sketch or the 'leo_echo' sketch. Now back to the Adafruit 'parsing.pde' example sketch. This can cause problems with the software you are using to read the data (or not). Set a mapping (or other) program to the correct COM port and baud rate, and you will normally get NMEA position data streaming in. Load a blank sketch on the Mega, then just look at the raw data coming from TX0/RX0 that passes out the USB cable with any serial monitor set to the right baud rate. The arrows printed on these Mega pins hint at this 'backwards' connection. Hook GPS board RX to RX0 (Digital pin 0) and TX to TX0 (Digital pin 1). Side info on using the Mega as a 'dumb 'USB GPS puck': You are ready to use the modified Adafruit parsing sketch or whatever. This 'emulates' a simple 4 connector generic GPS board hookup to the hardware serial pins on the Mega. Then I hooked wires directly to the shields TX and RX solder pads.

I wanted to test the Adafruit Ultimate GPS Shield board on my Mega in a raw way.īasically, just like you would connect a generic GPS breakout board lying on desk.įound some errors in the example GPS sketches written by Adafruitįirst, I switched the shields onboard switch to 'Soft Serial'.

There are other GPS libraries with example code too. This example uses the Adafruit 'parsing.pde' sketch. Physically, it should work with many of the generic GPS breakout boards that have 4 pins (VCC,RX,TX,GND). This info may help some new people wanting to use a GPS breakout board on a Mega.

Arduino mega 2560 software serial pins