undefined reference to `timer0_overflow_count'

[bizkit1]

Hello,

I am trying to compile this for the adafruit feather m0 RFM915 (SAMD21) and i am running into this error:
undefined reference to timer0_overflow_count'
from here:

  cli();
      timer0_overflow_count += 8 * 64 * clockCyclesPerMicrosecond();
      sei();

Also, for cli() and sei() i get these errors:

'cli' was not declared in this scope
'sei' was not declared in this scope

Any help would be highly appreciated taking into consideration that your project is what i need for my setup. Thanks

[Bjoerns-TB]

Hi,

the sleep method used in this example is not compatible with the M0. Deleting the affected code and adding a simple delay will make it work.