WIP: Make unborrow safe to use

embassy-nrf/src/ppi/mod.rs

@@ -15,10 +15,9 @@
 //! many tasks and events, but any single task or event can only be coupled with one channel.
 //!
 
-use core::marker::PhantomData;
 use core::ptr::NonNull;
 
-use embassy_hal_common::unsafe_impl_unborrow;
+use embassy_hal_common::{unsafe_impl_unborrow, Unborrowed};
 
 use crate::{peripherals, Unborrow};
 
@@ -28,12 +27,11 @@ mod dppi;
 mod ppi;
 
 pub struct Ppi<'d, C: Channel, const EVENT_COUNT: usize, const TASK_COUNT: usize> {
-    ch: C,
+    ch: Unborrowed<'d, C>,
     #[cfg(feature = "_dppi")]
     events: [Event; EVENT_COUNT],
     #[cfg(feature = "_dppi")]
     tasks: [Task; TASK_COUNT],
-    phantom: PhantomData<&'d mut C>,
 }
 
 const REGISTER_DPPI_CONFIG_OFFSET: usize = 0x80 / core::mem::size_of::<u32>();

embassy-nrf/src/ppi/ppi.rs

@@ -1,5 +1,3 @@
-use core::marker::PhantomData;
-
 use embassy_hal_common::unborrow;
 
 use super::{Channel, ConfigurableChannel, Event, Ppi, StaticChannel, Task};
@@ -29,10 +27,7 @@ impl<'d, C: StaticChannel> Ppi<'d, C, 0, 1> {
         let n = ch.number();
         r.fork[n].tep.write(|w| unsafe { w.bits(task.reg_val()) });
 
-        Self {
-            ch,
-            phantom: PhantomData,
-        }
+        Self { ch }
     }
 }
 
@@ -45,10 +40,7 @@ impl<'d, C: ConfigurableChannel> Ppi<'d, C, 1, 1> {
         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,
-            phantom: PhantomData,
-        }
+        Self { ch }
     }
 }
 
@@ -63,10 +55,7 @@ impl<'d, C: ConfigurableChannel> Ppi<'d, C, 1, 2> {
         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,
-            phantom: PhantomData,
-        }
+        Self { ch }
     }
 }