periodUs incorrect due to int maths

[kevinjwalters]

In

codal-nrf52/source/NRF52PWM.cpp

Line 157 in bdfa1ec

periodUs = period_ticks / (clock_frequency/1000000);

there's some maths with period_ticks and another integer constant value, for period_ticks of 20 this will result in (float) periodUs being set to 1.0 rather than 1.25

    periodUs = period_ticks / (clock_frequency/1000000);

I suspect that should be something like

    periodUs = (float)period_ticks / (clock_frequency/1000000);

to force FP maths?

The actual PWM hardware timers are set using period_ticks so they are okay AFAICS.