Hardware:
- teensy 4.1 + ethernet connector
- GPS module with PPS on pin 35, GPS TX (pin 0), GPS RX (pin 1) (I'm using a ublox Neo-7N, but many others would work)
Software:
- put https://github.com/ddrown/teensy41_ethernet in your Arduino libraries folder
For the GPS module, you just need PPS, serial output at 115200, and ZDA NMEA messages enabled. If you need a different GPS serial speed or need to use the RMC NMEA message, see the settings.h file.
For tests, see the test/ directory. It uses the ArduinoFake mock environment, which uses the FakeIt mock system and Unity unit tests.
For NTP+GPS status, go to http://[ip]
It will start generating a graph of the local Clock Offset, the local Clock Sync parameters, the Satellite Signal strength, and a "radar" view of the GPS satellites overhead.
