Adds a check to verify if the port had been already enabled, and only in that case disables/re-enables the port. This also solves the issue of setClock being called after begin(), but doesn't not enable the port if begin() had not been called yet.
The current implementation will not change speed if Wire.setClock is called after begin() since the flags are only applied when the port is enabled from being disabled.
Corrected that by adding 2 lines to disable the port, and then enable it again with the new settings.
Tested and confirmed the new speed is applied.
aster94
victorpv
Roger Clark
U-MarquisSeven\Brandon
Samuel Brucksch