Ads support for WDT and switching on GPS only mode on the gps for powersaving

Ads support for WDT - Watch Dog Timer to prevent the program running in the 328 to freeze or lock up.
Switching on GPS only mode on the gps for powersaving (BDS off), saves about 4-5mA

Timing2.h is a testfile that will start tx every 2min

Fuses to set

62 D9 FE 1.8V / internal /div8 @ 1Mhz

E2 D9 FE 1.8V / internal 8Mhz osc

or the one if you use a 2/4/8Mhz external xo FD D9 FE

Good fusecalc page https://www.engbedded.com/fusecalc/