Just did a quick test on Kubuntu 17.10 using gcc-version 5.4.0 (GCC).
Same ide version.
Same result using the MicroCore. Only works when using the delay(1).
Just did a quick test on Kubuntu 17.10 using gcc-version 5.4.0 (GCC).
Same ide version.
Same result using the MicroCore. Only works when using the delay(1).