Missing timers?

[David O'Connor]

Hi. I'm having trouble setting up General purpose timer 3. Is there a reason they're not available in the hal?

eg:

let timer = timer::Timer::tim3(dp.TIM3, 1.hz(), clocks, &mut rcc.apb1r1);

I'm new to L4, but from reading the Reference Manual, it appears these timers exist, and behave how they would in other STM32 MCUs.

[David O'Connor]

Got it working. PR: #186