Struct Timer

pub struct Timer<'d, T: Instance> { /* private fields */ }

nRF Timer driver.

The timer has an internal counter, which is incremented for every tick of the timer. The counter is 32-bit, so it wraps back to 0 when it reaches 2^32.

It has either 4 or 6 Capture/Compare registers, which can be used to capture the current state of the counter or trigger an event when the counter reaches a certain value. Timer driver.

Implementations

impl<'d, T: Instance> Timer<'d, T>

pub fn new(timer: impl Peripheral<P = T> + 'd) -> Self

Create a new Timer driver.

This can be useful for triggering tasks via PPI Uarte uses this internally.

pub fn new_counter(timer: impl Peripheral<P = T> + 'd) -> Self

Create a new Timer driver in counter mode.

This can be useful for triggering tasks via PPI Uarte uses this internally.

pub fn start(&self)

Starts the timer.

pub fn stop(&self)

Stops the timer.

pub fn clear(&self)

Reset the timer’s counter to 0.

pub fn task_start(&self) -> Task<'d>

Returns the START task, for use with PPI.

When triggered, this task starts the timer.

pub fn task_stop(&self) -> Task<'d>

Returns the STOP task, for use with PPI.

When triggered, this task stops the timer.

pub fn task_clear(&self) -> Task<'d>

Returns the CLEAR task, for use with PPI.

When triggered, this task resets the timer’s counter to 0.

pub fn task_count(&self) -> Task<'d>

Returns the COUNT task, for use with PPI.

When triggered, this task increments the timer’s counter by 1. Only works in counter mode.

pub fn set_frequency(&self, frequency: Frequency)

Change the timer’s frequency.

This will stop the timer if it isn’t already stopped, because the timer may exhibit ‘unpredictable behaviour’ if it’s frequency is changed while it’s running.

pub fn cc(&self, n: usize) -> Cc<'d, T>

Returns this timer’s nth CC register.

Panics

Panics if n >= the number of CC registers this timer has (4 for a normal timer, 6 for an extended timer).