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-rw-r--r--embassy-rp/src/i2c.rs23
1 files changed, 14 insertions, 9 deletions
diff --git a/embassy-rp/src/i2c.rs b/embassy-rp/src/i2c.rs
index b9e4382c..d6742f6a 100644
--- a/embassy-rp/src/i2c.rs
+++ b/embassy-rp/src/i2c.rs
@@ -70,8 +70,6 @@ impl<'d, T: Instance> I2c<'d, T, Blocking> {
}
}
-static I2C_WAKER: [AtomicWaker; 2] = [AtomicWaker::new(), AtomicWaker::new()];
-
impl<'d, T: Instance> I2c<'d, T, Async> {
pub fn new_async(
peri: impl Peripheral<P = T> + 'd,
@@ -109,7 +107,7 @@ impl<'d, T: Instance> I2c<'d, T, Async> {
let r = f(self);
if r.is_pending() {
- I2C_WAKER[T::IDX].register(cx.waker());
+ T::waker().register(cx.waker());
g(self);
}
r
@@ -122,7 +120,7 @@ impl<'d, T: Instance> I2c<'d, T, Async> {
let i2c = T::regs();
i2c.ic_intr_mask().write_value(pac::i2c::regs::IcIntrMask::default());
- I2C_WAKER[T::IDX].wake();
+ T::waker().wake();
}
async fn read_async_internal(&mut self, buffer: &mut [u8], restart: bool, send_stop: bool) -> Result<(), Error> {
@@ -809,16 +807,17 @@ fn i2c_reserved_addr(addr: u16) -> bool {
mod sealed {
use embassy_cortex_m::interrupt::Interrupt;
+ use embassy_sync::waitqueue::AtomicWaker;
pub trait Instance {
const TX_DREQ: u8;
const RX_DREQ: u8;
- const IDX: usize;
type Interrupt: Interrupt;
fn regs() -> crate::pac::i2c::I2c;
fn reset() -> crate::pac::resets::regs::Peripherals;
+ fn waker() -> &'static AtomicWaker;
}
pub trait Mode {}
@@ -845,11 +844,10 @@ impl_mode!(Async);
pub trait Instance: sealed::Instance {}
macro_rules! impl_instance {
- ($type:ident, $idx:expr, $irq:ident, $reset:ident, $tx_dreq:expr, $rx_dreq:expr) => {
+ ($type:ident, $irq:ident, $reset:ident, $tx_dreq:expr, $rx_dreq:expr) => {
impl sealed::Instance for peripherals::$type {
const TX_DREQ: u8 = $tx_dreq;
const RX_DREQ: u8 = $rx_dreq;
- const IDX: usize = $idx;
type Interrupt = crate::interrupt::$irq;
@@ -864,13 +862,20 @@ macro_rules! impl_instance {
ret.$reset(true);
ret
}
+
+ #[inline]
+ fn waker() -> &'static AtomicWaker {
+ static WAKER: AtomicWaker = AtomicWaker::new();
+
+ &WAKER
+ }
}
impl Instance for peripherals::$type {}
};
}
-impl_instance!(I2C0, 0, I2C0_IRQ, set_i2c0, 32, 33);
-impl_instance!(I2C1, 1, I2C1_IRQ, set_i2c1, 34, 35);
+impl_instance!(I2C0, I2C0_IRQ, set_i2c0, 32, 33);
+impl_instance!(I2C1, I2C1_IRQ, set_i2c1, 34, 35);
pub trait SdaPin<T: Instance>: sealed::SdaPin<T> + crate::gpio::Pin {}
pub trait SclPin<T: Instance>: sealed::SclPin<T> + crate::gpio::Pin {}