gps software
I spent about 3 hours today working on software for the GPS interface. I tried a few different things. The last thing I tried was to poll the port in the main loop of the data logger. I could get some of the GPS strings, but usually only about 2 or three characters out of 56. The problem is that the fifo buffer on the UART is only 8 bytes. With a 30 - 60 Hz main loop, it just doesn’t get to the buffer fast enough to get all of the characters. I need another interrupt-driven serial interface. The problem here is that I don’t know the address of the UART. I can’t go any farther with this, so I emailed jkmicro. Hopefully they can either tell me the correct address, or hook me up with a driver set that will work.