unable to compile ...

[urs8000]

in case of missing <sys/time.h> board selected: Feather M0 as a sensor which does not use time
the above mentioned library is only valid for ESP32
why don't you use an universal time library for that functions?
e.g. Time with TimeLib.h ???

[timmbogner]

Hi @urs8000,
There are issues with AVR boards not having the sys/time.h file, but (to my knowledge) it should be present for SAMD and other boards/chips with time functionality. I am testing the 'LoRa_Sensor' sketch under the Adafruit Feather M0 (SAMD21) definition and it compiles successfully. Let me know if your setup is different.

[urs8000]

hello @timmbogner
thank for your answer
I installed FDRS from scratch and could compile your unmodified example LoRa_Sensor without error (only some notes & warnings)
as soon as I activate DGB_Level 1 or 2 I get:
In file included from e:_development\Arduino\libraries\Farm-Data-Relay-System\src/fdrs_node.h:40,
from E:_development\Arduino\libraries\Farm-Data-Relay-System\examples\LoRa_Sensor\LoRa_Sensor.ino:10:
e:_development\Arduino\libraries\Farm-Data-Relay-System\src/fdrs_time.h: In function 'void adjTimeforNetDelay(time_t)':
e:_development\Arduino\libraries\Farm-Data-Relay-System\src/fdrs_time.h:391:45: error: call of overloaded 'String(time_t&)' is ambiguous
391 | DBG1("Time adj by " + String(newOffset) + " secs");

at the end I could compile HELTEC_LoRa_32(V2), Feather_M0(SAMD21)_LoRa and other ESP based controllers
but NOT ANY ARM based e.g. MoteinoMEGA(-USB)

to overcome this problems I've used a save library bundle dated of 26/02/2024 to compile onla the MoteinoMEGA-sensor

it would be great if you could EXCLUDE timeinformation from any sensor. that's a function one (best MQTT) of the gateways should fullfill.