32 lines
815 B
Rust
32 lines
815 B
Rust
//! Delay implementation using regular timers.
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//!
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//! This is done because RTFM takes ownership of SYST, and the nrf52-hal by
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//! default also wants SYST for its Delay implementation.
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use embedded_hal::blocking::delay::DelayUs;
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use hal::nrf52832_pac as pac;
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use nrf52832_hal::prelude::TimerExt;
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use nrf52832_hal::{self as hal, timer::Timer};
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pub struct TimerDelay {
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timer: hal::Timer<pac::TIMER0>,
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}
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impl TimerDelay {
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pub fn new(timer0: pac::TIMER0) -> Self {
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Self {
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//timer: Timer::new(timer0),
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timer: timer0.constrain(),
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}
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}
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}
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impl DelayUs<u32> for TimerDelay {
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fn delay_us(&mut self, us: u32) {
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// Currently the HAL timer is hardcoded at 1 MHz,
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// so 1 cycle = 1 µs.
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let cycles = us;
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self.timer.delay(cycles);
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}
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}
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