I am currently working on a project to read data from a GPS device and display that data on a LCD. Currently I'm using avr-gcc on the PI to program the AVR on the gertboard. The AVR is controlling the LCD and I'd also like the AVR to control/read the GPS device. Ive got the LCD up and running, now to the GPS. It uses UART but I'm not clear on how to connect things. I'm using a EM-406 GPS. Has anyone done this? I think reading the data will be pretty straight forward once I have everything connected right.
So I guess my question is how do I interface with the UART of the ATMEGA on the gertboard? I tried to find some reference in the forums but didn't find anything. Can someone point me in the right direction please? Much help is appreciated.