90 lines
2.6 KiB
Rust
90 lines
2.6 KiB
Rust
use embassy_hal_common::into_ref;
|
|
|
|
use super::{Channel, ConfigurableChannel, Event, Ppi, StaticChannel, Task};
|
|
use crate::{pac, Peripheral};
|
|
|
|
impl Task {
|
|
fn reg_val(&self) -> u32 {
|
|
self.0.as_ptr() as _
|
|
}
|
|
}
|
|
impl Event {
|
|
fn reg_val(&self) -> u32 {
|
|
self.0.as_ptr() as _
|
|
}
|
|
}
|
|
|
|
fn regs() -> &'static pac::ppi::RegisterBlock {
|
|
unsafe { &*pac::PPI::ptr() }
|
|
}
|
|
|
|
#[cfg(not(feature = "nrf51"))] // Not for nrf51 because of the fork task
|
|
impl<'d, C: StaticChannel> Ppi<'d, C, 0, 1> {
|
|
/// Configure PPI channel to trigger `task`.
|
|
pub fn new_zero_to_one(ch: impl Peripheral<P = C> + 'd, task: Task) -> Self {
|
|
into_ref!(ch);
|
|
|
|
let r = regs();
|
|
let n = ch.number();
|
|
r.fork[n].tep.write(|w| unsafe { w.bits(task.reg_val()) });
|
|
|
|
Self { ch }
|
|
}
|
|
}
|
|
|
|
impl<'d, C: ConfigurableChannel> Ppi<'d, C, 1, 1> {
|
|
/// Configure PPI channel to trigger `task` on `event`.
|
|
pub fn new_one_to_one(ch: impl Peripheral<P = C> + 'd, event: Event, task: Task) -> Self {
|
|
into_ref!(ch);
|
|
|
|
let r = regs();
|
|
let n = ch.number();
|
|
r.ch[n].eep.write(|w| unsafe { w.bits(event.reg_val()) });
|
|
r.ch[n].tep.write(|w| unsafe { w.bits(task.reg_val()) });
|
|
|
|
Self { ch }
|
|
}
|
|
}
|
|
|
|
#[cfg(not(feature = "nrf51"))] // Not for nrf51 because of the fork task
|
|
impl<'d, C: ConfigurableChannel> Ppi<'d, C, 1, 2> {
|
|
/// Configure PPI channel to trigger `task1` and `task2` on `event`.
|
|
pub fn new_one_to_two(ch: impl Peripheral<P = C> + 'd, event: Event, task1: Task, task2: Task) -> Self {
|
|
into_ref!(ch);
|
|
|
|
let r = regs();
|
|
let n = ch.number();
|
|
r.ch[n].eep.write(|w| unsafe { w.bits(event.reg_val()) });
|
|
r.ch[n].tep.write(|w| unsafe { w.bits(task1.reg_val()) });
|
|
r.fork[n].tep.write(|w| unsafe { w.bits(task2.reg_val()) });
|
|
|
|
Self { ch }
|
|
}
|
|
}
|
|
|
|
impl<'d, C: Channel, const EVENT_COUNT: usize, const TASK_COUNT: usize> Ppi<'d, C, EVENT_COUNT, TASK_COUNT> {
|
|
/// Enables the channel.
|
|
pub fn enable(&mut self) {
|
|
let n = self.ch.number();
|
|
regs().chenset.write(|w| unsafe { w.bits(1 << n) });
|
|
}
|
|
|
|
/// Disables the channel.
|
|
pub fn disable(&mut self) {
|
|
let n = self.ch.number();
|
|
regs().chenclr.write(|w| unsafe { w.bits(1 << n) });
|
|
}
|
|
}
|
|
|
|
impl<'d, C: Channel, const EVENT_COUNT: usize, const TASK_COUNT: usize> Drop for Ppi<'d, C, EVENT_COUNT, TASK_COUNT> {
|
|
fn drop(&mut self) {
|
|
self.disable();
|
|
|
|
let r = regs();
|
|
let n = self.ch.number();
|
|
r.ch[n].eep.write(|w| unsafe { w.bits(0) });
|
|
r.ch[n].tep.write(|w| unsafe { w.bits(0) });
|
|
r.fork[n].tep.write(|w| unsafe { w.bits(0) });
|
|
}
|
|
}
|