CountDown timer API should be configured with a time period, not a frequency #378
Description
The builder methods (start and start_countdown) accept a variable called timeout, which must be convertible into Hertz. This does not make sense to me. A Countdown should "count down from X" where X is a time duration, not a frequency. This leads to non-sensical looking code like:
let frequency = timeout.into.0
Also, it means you loose A LOT of precision on the timer. You can no longer precisely control the timer delay in increments of cycles due to this division.
let ticks = self.clk.0 / frequency;