pico-tracker/firmware/Pre-flight.md

Pre-Flight Checklist

• In hw_config.h

  • USE_XOSC is set. Otherwise the symbol timing frequency will be somewhat inaccurate.
  • APRS_ENABLE is set if APRS is to be used on the flight
  • APRS_USE_GEOFENCE is set
  • TELEMETRY_USE_GEOFENCE is set
  • DEBUG_USE_INTWATCHDOG can be disabled during flight. This saves some power
  • Check interrupts are regular enough to kick the hardware watchdog.

• In watchdog.h

  • Set the various MAXIDLE values to values determined during testing. These define how many sleep cycles are permitted in that state before we stop kicking the watchdog. 0xFFFF seems like a good conservative value, but you may want to be more agressive.

• In aprs.h

  • Set callsign and symbol
  • Make sure APRS_FLIGHT_PARAMS is defined

• In main.c

  • Set callsign