118 files changed, 391 insertions, 142 deletions

diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index d76e5ced4..d2e8e316b 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -69,4 +69,4 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Test
-        run: cd embassy-util && cargo test
+        run: cd embassy-sync && cargo test
diff --git a/.vscode/settings.json b/.vscode/settings.json
index d6ce75c99..5e9e51799 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -18,7 +18,7 @@
   "rust-analyzer.linkedProjects": [
     // Declare for the target you wish to develop
     //"embassy-executor/Cargo.toml",
-    //"embassy-util/Cargo.toml",
+    //"embassy-sync/Cargo.toml",
     "examples/nrf/Cargo.toml",
     // "examples/rp/Cargo.toml",
     // "examples/std/Cargo.toml",
diff --git a/embassy-boot/boot/Cargo.toml b/embassy-boot/boot/Cargo.toml
index 9c2e72be5..a42f88688 100644
--- a/embassy-boot/boot/Cargo.toml
+++ b/embassy-boot/boot/Cargo.toml
@@ -14,7 +14,7 @@ target = "thumbv7em-none-eabi"
 [dependencies]
 defmt = { version = "0.3", optional = true }
 log = { version = "0.4", optional = true  }
-embassy-util = { version = "0.1.0", path = "../../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync" }
 embedded-storage = "0.3.0"
 embedded-storage-async = "0.3.0"
 
diff --git a/embassy-boot/nrf/Cargo.toml b/embassy-boot/nrf/Cargo.toml
index b06e8102c..234393e7c 100644
--- a/embassy-boot/nrf/Cargo.toml
+++ b/embassy-boot/nrf/Cargo.toml
@@ -15,7 +15,7 @@ target = "thumbv7em-none-eabi"
 [dependencies]
 defmt = { version = "0.3", optional = true }
 
-embassy-util = { path = "../../embassy-util" }
+embassy-sync = { path = "../../embassy-sync" }
 embassy-nrf = { path = "../../embassy-nrf", default-features = false, features = ["nightly"] }
 embassy-boot = { path = "../boot", default-features = false }
 cortex-m = { version = "0.7.6" }
diff --git a/embassy-boot/stm32/Cargo.toml b/embassy-boot/stm32/Cargo.toml
index d8f492531..ad4657e0d 100644
--- a/embassy-boot/stm32/Cargo.toml
+++ b/embassy-boot/stm32/Cargo.toml
@@ -17,7 +17,7 @@ defmt = { version = "0.3", optional = true }
 defmt-rtt = { version = "0.3", optional = true }
 log = { version = "0.4", optional = true }
 
-embassy-util = { path = "../../embassy-util" }
+embassy-sync = { path = "../../embassy-sync" }
 embassy-stm32 = { path = "../../embassy-stm32", default-features = false, features = ["nightly"] }
 embassy-boot = { path = "../boot", default-features = false }
 cortex-m = { version = "0.7.6" }
diff --git a/embassy-cortex-m/Cargo.toml b/embassy-cortex-m/Cargo.toml
index 1f16da31b..7efced669 100644
--- a/embassy-cortex-m/Cargo.toml
+++ b/embassy-cortex-m/Cargo.toml
@@ -35,7 +35,7 @@ prio-bits-8 = []
 defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
 
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-executor = { version = "0.1.0", path = "../embassy-executor"}
 embassy-macros = { version = "0.1.0", path = "../embassy-macros"}
 embassy-hal-common = { version = "0.1.0", path = "../embassy-hal-common"}
diff --git a/embassy-embedded-hal/Cargo.toml b/embassy-embedded-hal/Cargo.toml
index 866666871..462680720 100644
--- a/embassy-embedded-hal/Cargo.toml
+++ b/embassy-embedded-hal/Cargo.toml
@@ -16,7 +16,7 @@ std = []
 nightly = ["embedded-hal-async", "embedded-storage-async"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embedded-hal-02 = { package = "embedded-hal", version = "0.2.6", features = ["unproven"] }
 embedded-hal-1 = { package = "embedded-hal", version = "1.0.0-alpha.8" }
 embedded-hal-async = { version = "0.1.0-alpha.1", optional = true }
diff --git a/embassy-embedded-hal/src/shared_bus/asynch/i2c.rs b/embassy-embedded-hal/src/shared_bus/asynch/i2c.rs
index dc483b826..0bc6afd98 100644
--- a/embassy-embedded-hal/src/shared_bus/asynch/i2c.rs
+++ b/embassy-embedded-hal/src/shared_bus/asynch/i2c.rs
@@ -4,8 +4,8 @@
 //!
 //! ```rust
 //! use embassy_embedded_hal::shared_bus::i2c::I2cDevice;
-//! use embassy_util::mutex::Mutex;
-//! use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
+//! use embassy_sync::mutex::Mutex;
+//! use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
 //!
 //! static I2C_BUS: StaticCell<Mutex::<ThreadModeRawMutex, Twim<TWISPI0>>> = StaticCell::new();
 //! let config = twim::Config::default();
@@ -24,8 +24,8 @@
 //! ```
 use core::future::Future;
 
-use embassy_util::blocking_mutex::raw::RawMutex;
-use embassy_util::mutex::Mutex;
+use embassy_sync::blocking_mutex::raw::RawMutex;
+use embassy_sync::mutex::Mutex;
 use embedded_hal_async::i2c;
 
 use crate::shared_bus::I2cDeviceError;
diff --git a/embassy-embedded-hal/src/shared_bus/asynch/spi.rs b/embassy-embedded-hal/src/shared_bus/asynch/spi.rs
index bb419d6a6..c95b59ef0 100644
--- a/embassy-embedded-hal/src/shared_bus/asynch/spi.rs
+++ b/embassy-embedded-hal/src/shared_bus/asynch/spi.rs
@@ -4,8 +4,8 @@
 //!
 //! ```rust
 //! use embassy_embedded_hal::shared_bus::spi::SpiDevice;
-//! use embassy_util::mutex::Mutex;
-//! use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
+//! use embassy_sync::mutex::Mutex;
+//! use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
 //!
 //! static SPI_BUS: StaticCell<Mutex<ThreadModeRawMutex, spim::Spim<SPI3>>> = StaticCell::new();
 //! let mut config = spim::Config::default();
@@ -27,8 +27,8 @@
 //! ```
 use core::future::Future;
 
-use embassy_util::blocking_mutex::raw::RawMutex;
-use embassy_util::mutex::Mutex;
+use embassy_sync::blocking_mutex::raw::RawMutex;
+use embassy_sync::mutex::Mutex;
 use embedded_hal_1::digital::blocking::OutputPin;
 use embedded_hal_1::spi::ErrorType;
 use embedded_hal_async::spi;
diff --git a/embassy-embedded-hal/src/shared_bus/blocking/i2c.rs b/embassy-embedded-hal/src/shared_bus/blocking/i2c.rs
index 837312e87..a611e2d27 100644
--- a/embassy-embedded-hal/src/shared_bus/blocking/i2c.rs
+++ b/embassy-embedded-hal/src/shared_bus/blocking/i2c.rs
@@ -4,7 +4,7 @@
 //!
 //! ```rust
 //! use embassy_embedded_hal::shared_bus::blocking::i2c::I2cDevice;
-//! use embassy_util::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
+//! use embassy_sync::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
 //!
 //! static I2C_BUS: StaticCell<NoopMutex<RefCell<Twim<TWISPI0>>>> = StaticCell::new();
 //! let irq = interrupt::take!(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0);
@@ -18,8 +18,8 @@
 
 use core::cell::RefCell;
 
-use embassy_util::blocking_mutex::raw::RawMutex;
-use embassy_util::blocking_mutex::Mutex;
+use embassy_sync::blocking_mutex::raw::RawMutex;
+use embassy_sync::blocking_mutex::Mutex;
 use embedded_hal_1::i2c::blocking::{I2c, Operation};
 use embedded_hal_1::i2c::ErrorType;
 
diff --git a/embassy-embedded-hal/src/shared_bus/blocking/spi.rs b/embassy-embedded-hal/src/shared_bus/blocking/spi.rs
index a48d9183c..23845d887 100644
--- a/embassy-embedded-hal/src/shared_bus/blocking/spi.rs
+++ b/embassy-embedded-hal/src/shared_bus/blocking/spi.rs
@@ -4,7 +4,7 @@
 //!
 //! ```rust
 //! use embassy_embedded_hal::shared_bus::blocking::spi::SpiDevice;
-//! use embassy_util::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
+//! use embassy_sync::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
 //!
 //! static SPI_BUS: StaticCell<NoopMutex<RefCell<Spim<SPI3>>>> = StaticCell::new();
 //! let irq = interrupt::take!(SPIM3);
@@ -20,8 +20,8 @@
 
 use core::cell::RefCell;
 
-use embassy_util::blocking_mutex::raw::RawMutex;
-use embassy_util::blocking_mutex::Mutex;
+use embassy_sync::blocking_mutex::raw::RawMutex;
+use embassy_sync::blocking_mutex::Mutex;
 use embedded_hal_1::digital::blocking::OutputPin;
 use embedded_hal_1::spi;
 use embedded_hal_1::spi::blocking::SpiBusFlush;
diff --git a/embassy-futures/Cargo.toml b/embassy-futures/Cargo.toml
new file mode 100644
index 000000000..e564f5a96
--- /dev/null
+++ b/embassy-futures/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "embassy-futures"
+version = "0.1.0"
+edition = "2021"
+
+[package.metadata.embassy_docs]
+src_base = "https://github.com/embassy-rs/embassy/blob/embassy-futures-v$VERSION/embassy-futures/src/"
+src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-futures/src/"
+features = ["nightly"]
+target = "thumbv7em-none-eabi"
+
+[dependencies]
+defmt = { version = "0.3", optional = true }
+log = { version = "0.4.14", optional = true }
diff --git a/embassy-util/src/fmt.rs b/embassy-futures/src/fmt.rs
index f8bb0a035..f8bb0a035 100644
--- a/embassy-util/src/fmt.rs
+++ b/embassy-futures/src/fmt.rs
diff --git a/embassy-futures/src/lib.rs b/embassy-futures/src/lib.rs
new file mode 100644
index 000000000..48c9c8574
--- /dev/null
+++ b/embassy-futures/src/lib.rs
@@ -0,0 +1,12 @@
+#![no_std]
+#![doc = include_str!("../../README.md")]
+#![warn(missing_docs)]
+
+// This mod MUST go first, so that the others see its macros.
+pub(crate) mod fmt;
+
+mod select;
+mod yield_now;
+
+pub use select::*;
+pub use yield_now::*;
diff --git a/embassy-util/src/select.rs b/embassy-futures/src/select.rs
index 8cecb7fa0..8cecb7fa0 100644
--- a/embassy-util/src/select.rs
+++ b/embassy-futures/src/select.rs
diff --git a/embassy-util/src/yield_now.rs b/embassy-futures/src/yield_now.rs
index 1ebecb916..1ebecb916 100644
--- a/embassy-util/src/yield_now.rs
+++ b/embassy-futures/src/yield_now.rs
diff --git a/embassy-lora/Cargo.toml b/embassy-lora/Cargo.toml
index c7435ab3e..9d5e7aed2 100644
--- a/embassy-lora/Cargo.toml
+++ b/embassy-lora/Cargo.toml
@@ -25,7 +25,7 @@ defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
 
 embassy-time = { version = "0.1.0", path = "../embassy-time" }
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-stm32 = { version = "0.1.0", path = "../embassy-stm32", default-features = false, optional = true }
 embedded-hal-1 = { package = "embedded-hal", version = "1.0.0-alpha.8" }
 embedded-hal-async = { version = "0.1.0-alpha.1" }
diff --git a/embassy-lora/src/stm32wl/mod.rs b/embassy-lora/src/stm32wl/mod.rs
index 4a4c5cfb7..374c8532f 100644
--- a/embassy-lora/src/stm32wl/mod.rs
+++ b/embassy-lora/src/stm32wl/mod.rs
@@ -12,7 +12,7 @@ use embassy_stm32::subghz::{
     Status, SubGhz, TcxoMode, TcxoTrim, Timeout, TxParams,
 };
 use embassy_stm32::Peripheral;
-use embassy_util::channel::signal::Signal;
+use embassy_sync::channel::signal::Signal;
 use lorawan_device::async_device::radio::{Bandwidth, PhyRxTx, RfConfig, RxQuality, SpreadingFactor, TxConfig};
 use lorawan_device::async_device::Timings;
 
diff --git a/embassy-net/Cargo.toml b/embassy-net/Cargo.toml
index 9f9bb2261..2143f36d3 100644
--- a/embassy-net/Cargo.toml
+++ b/embassy-net/Cargo.toml
@@ -38,7 +38,7 @@ defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
 
 embassy-time = { version = "0.1.0", path = "../embassy-time" }
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embedded-io = { version = "0.3.0", features = [ "async" ] }
 
 managed = { version = "0.8.0", default-features = false, features = [ "map" ] }
diff --git a/embassy-net/src/stack.rs b/embassy-net/src/stack.rs
index 4b6a7ae2a..8d2dd4bca 100644
--- a/embassy-net/src/stack.rs
+++ b/embassy-net/src/stack.rs
@@ -2,8 +2,8 @@ use core::cell::UnsafeCell;
 use core::future::Future;
 use core::task::{Context, Poll};
 
+use embassy_sync::waitqueue::WakerRegistration;
 use embassy_time::{Instant, Timer};
-use embassy_util::waitqueue::WakerRegistration;
 use futures::future::poll_fn;
 use futures::pin_mut;
 use heapless::Vec;
diff --git a/embassy-nrf/Cargo.toml b/embassy-nrf/Cargo.toml
index 0ef7f5bbd..186c73a58 100644
--- a/embassy-nrf/Cargo.toml
+++ b/embassy-nrf/Cargo.toml
@@ -18,7 +18,7 @@ flavors = [
 
 time = ["dep:embassy-time"]
 
-defmt = ["dep:defmt", "embassy-executor/defmt", "embassy-util/defmt", "embassy-usb?/defmt", "embedded-io?/defmt", "embassy-embedded-hal/defmt"]
+defmt = ["dep:defmt", "embassy-executor/defmt", "embassy-sync/defmt", "embassy-usb?/defmt", "embedded-io?/defmt", "embassy-embedded-hal/defmt"]
 
 # Enable nightly-only features
 nightly = ["embedded-hal-1", "embedded-hal-async", "embassy-usb", "embedded-storage-async", "dep:embedded-io", "embassy-embedded-hal/nightly"]
@@ -66,7 +66,7 @@ _gpio-p1 = []
 [dependencies]
 embassy-executor = { version = "0.1.0", path = "../embassy-executor", optional = true }
 embassy-time = { version = "0.1.0", path = "../embassy-time", optional = true }
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-cortex-m = { version = "0.1.0", path = "../embassy-cortex-m", features = ["prio-bits-3"]}
 embassy-hal-common = {version = "0.1.0", path = "../embassy-hal-common" }
 embassy-embedded-hal = {version = "0.1.0", path = "../embassy-embedded-hal" }
diff --git a/embassy-nrf/src/buffered_uarte.rs b/embassy-nrf/src/buffered_uarte.rs
index 08dfcbcf9..62af544ae 100644
--- a/embassy-nrf/src/buffered_uarte.rs
+++ b/embassy-nrf/src/buffered_uarte.rs
@@ -21,7 +21,7 @@ use core::task::Poll;
 use embassy_cortex_m::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
 use embassy_hal_common::ring_buffer::RingBuffer;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::WakerRegistration;
+use embassy_sync::waitqueue::WakerRegistration;
 use futures::future::poll_fn;
 // Re-export SVD variants to allow user to directly set values
 pub use pac::uarte0::{baudrate::BAUDRATE_A as Baudrate, config::PARITY_A as Parity};
diff --git a/embassy-nrf/src/gpiote.rs b/embassy-nrf/src/gpiote.rs
index cf49b0db0..b52035705 100644
--- a/embassy-nrf/src/gpiote.rs
+++ b/embassy-nrf/src/gpiote.rs
@@ -3,7 +3,7 @@ use core::future::Future;
 use core::task::{Context, Poll};
 
 use embassy_hal_common::{impl_peripheral, Peripheral, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::gpio::sealed::Pin as _;
diff --git a/embassy-nrf/src/qdec.rs b/embassy-nrf/src/qdec.rs
index 83f2916b9..762e09715 100644
--- a/embassy-nrf/src/qdec.rs
+++ b/embassy-nrf/src/qdec.rs
@@ -3,7 +3,7 @@
 use core::task::Poll;
 
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::gpio::sealed::Pin as _;
diff --git a/embassy-nrf/src/qspi.rs b/embassy-nrf/src/qspi.rs
index 6d7ebb4b1..c97cb1656 100644
--- a/embassy-nrf/src/qspi.rs
+++ b/embassy-nrf/src/qspi.rs
@@ -526,7 +526,7 @@ cfg_if::cfg_if! {
 }
 
 pub(crate) mod sealed {
-    use embassy_util::waitqueue::AtomicWaker;
+    use embassy_sync::waitqueue::AtomicWaker;
 
     use super::*;
 
diff --git a/embassy-nrf/src/rng.rs b/embassy-nrf/src/rng.rs
index 7aad561b6..42da51d0f 100644
--- a/embassy-nrf/src/rng.rs
+++ b/embassy-nrf/src/rng.rs
@@ -4,7 +4,7 @@ use core::task::Poll;
 
 use embassy_hal_common::drop::OnDrop;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::interrupt::InterruptExt;
diff --git a/embassy-nrf/src/saadc.rs b/embassy-nrf/src/saadc.rs
index f2ef46d8d..7dc66349e 100644
--- a/embassy-nrf/src/saadc.rs
+++ b/embassy-nrf/src/saadc.rs
@@ -4,7 +4,7 @@ use core::sync::atomic::{compiler_fence, Ordering};
 use core::task::Poll;
 
 use embassy_hal_common::{impl_peripheral, into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 use pac::{saadc, SAADC};
 use saadc::ch::config::{GAIN_A, REFSEL_A, RESP_A, TACQ_A};
diff --git a/embassy-nrf/src/spim.rs b/embassy-nrf/src/spim.rs
index 57c0c14c7..be2fc02fc 100644
--- a/embassy-nrf/src/spim.rs
+++ b/embassy-nrf/src/spim.rs
@@ -363,7 +363,7 @@ impl<'d, T: Instance> Drop for Spim<'d, T> {
 }
 
 pub(crate) mod sealed {
-    use embassy_util::waitqueue::AtomicWaker;
+    use embassy_sync::waitqueue::AtomicWaker;
 
     use super::*;
 
diff --git a/embassy-nrf/src/temp.rs b/embassy-nrf/src/temp.rs
index 1491e4268..d520fd686 100644
--- a/embassy-nrf/src/temp.rs
+++ b/embassy-nrf/src/temp.rs
@@ -4,7 +4,7 @@ use core::task::Poll;
 
 use embassy_hal_common::drop::OnDrop;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use fixed::types::I30F2;
 use futures::future::poll_fn;
 
diff --git a/embassy-nrf/src/time_driver.rs b/embassy-nrf/src/time_driver.rs
index b961d65a0..c32a44637 100644
--- a/embassy-nrf/src/time_driver.rs
+++ b/embassy-nrf/src/time_driver.rs
@@ -3,9 +3,9 @@ use core::sync::atomic::{compiler_fence, AtomicU32, AtomicU8, Ordering};
 use core::{mem, ptr};
 
 use critical_section::CriticalSection;
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
+use embassy_sync::blocking_mutex::CriticalSectionMutex as Mutex;
 use embassy_time::driver::{AlarmHandle, Driver};
-use embassy_util::blocking_mutex::raw::CriticalSectionRawMutex;
-use embassy_util::blocking_mutex::CriticalSectionMutex as Mutex;
 
 use crate::interrupt::{Interrupt, InterruptExt};
 use crate::{interrupt, pac};
diff --git a/embassy-nrf/src/timer.rs b/embassy-nrf/src/timer.rs
index b3b613db2..3de5a8962 100644
--- a/embassy-nrf/src/timer.rs
+++ b/embassy-nrf/src/timer.rs
@@ -5,7 +5,7 @@ use core::task::Poll;
 
 use embassy_hal_common::drop::OnDrop;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::interrupt::{Interrupt, InterruptExt};
@@ -40,8 +40,8 @@ macro_rules! impl_timer {
             fn regs() -> &'static pac::timer0::RegisterBlock {
                 unsafe { &*(pac::$pac_type::ptr() as *const pac::timer0::RegisterBlock) }
             }
-            fn waker(n: usize) -> &'static ::embassy_util::waitqueue::AtomicWaker {
-                use ::embassy_util::waitqueue::AtomicWaker;
+            fn waker(n: usize) -> &'static ::embassy_sync::waitqueue::AtomicWaker {
+                use ::embassy_sync::waitqueue::AtomicWaker;
                 const NEW_AW: AtomicWaker = AtomicWaker::new();
                 static WAKERS: [AtomicWaker; $ccs] = [NEW_AW; $ccs];
                 &WAKERS[n]
diff --git a/embassy-nrf/src/twim.rs b/embassy-nrf/src/twim.rs
index 9587d1f40..850f6d0fa 100644
--- a/embassy-nrf/src/twim.rs
+++ b/embassy-nrf/src/twim.rs
@@ -13,9 +13,9 @@ use core::task::Poll;
 
 use embassy_embedded_hal::SetConfig;
 use embassy_hal_common::{into_ref, PeripheralRef};
+use embassy_sync::waitqueue::AtomicWaker;
 #[cfg(feature = "time")]
 use embassy_time::{Duration, Instant};
-use embassy_util::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::chip::{EASY_DMA_SIZE, FORCE_COPY_BUFFER_SIZE};
diff --git a/embassy-nrf/src/uarte.rs b/embassy-nrf/src/uarte.rs
index 0d24cf65f..4347ea558 100644
--- a/embassy-nrf/src/uarte.rs
+++ b/embassy-nrf/src/uarte.rs
@@ -932,7 +932,7 @@ impl<'d, U: Instance, T: TimerInstance> UarteRxWithIdle<'d, U, T> {
 pub(crate) mod sealed {
     use core::sync::atomic::AtomicU8;
 
-    use embassy_util::waitqueue::AtomicWaker;
+    use embassy_sync::waitqueue::AtomicWaker;
 
     use super::*;
 
diff --git a/embassy-nrf/src/usb.rs b/embassy-nrf/src/usb.rs
index 509ee313e..688326e9c 100644
--- a/embassy-nrf/src/usb.rs
+++ b/embassy-nrf/src/usb.rs
@@ -7,10 +7,10 @@ use core::task::Poll;
 
 use cortex_m::peripheral::NVIC;
 use embassy_hal_common::{into_ref, PeripheralRef};
+use embassy_sync::waitqueue::AtomicWaker;
 pub use embassy_usb;
 use embassy_usb::driver::{self, EndpointError, Event, Unsupported};
 use embassy_usb::types::{EndpointAddress, EndpointInfo, EndpointType, UsbDirection};
-use embassy_util::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 use futures::Future;
 use pac::usbd::RegisterBlock;
diff --git a/embassy-rp/Cargo.toml b/embassy-rp/Cargo.toml
index 0e53d3a35..cfd95b7b4 100644
--- a/embassy-rp/Cargo.toml
+++ b/embassy-rp/Cargo.toml
@@ -27,7 +27,7 @@ nightly = ["embassy-executor/nightly", "embedded-hal-1", "embedded-hal-async", "
 unstable-traits = ["embedded-hal-1"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-executor = { version = "0.1.0", path = "../embassy-executor" }
 embassy-time = { version = "0.1.0", path = "../embassy-time", features = [ "tick-1mhz" ] }
 embassy-cortex-m = { version = "0.1.0", path = "../embassy-cortex-m", features = ["prio-bits-2"]}
diff --git a/embassy-rp/src/gpio.rs b/embassy-rp/src/gpio.rs
index 90862fa32..428855c7f 100644
--- a/embassy-rp/src/gpio.rs
+++ b/embassy-rp/src/gpio.rs
@@ -5,7 +5,7 @@ use core::task::{Context, Poll};
 
 use embassy_cortex_m::interrupt::{Interrupt, InterruptExt};
 use embassy_hal_common::{impl_peripheral, into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use crate::pac::common::{Reg, RW};
 use crate::pac::SIO;
diff --git a/embassy-rp/src/timer.rs b/embassy-rp/src/timer.rs
index 5bc1f66c8..5215c0c0f 100644
--- a/embassy-rp/src/timer.rs
+++ b/embassy-rp/src/timer.rs
@@ -2,9 +2,9 @@ use core::cell::Cell;
 
 use atomic_polyfill::{AtomicU8, Ordering};
 use critical_section::CriticalSection;
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
+use embassy_sync::blocking_mutex::Mutex;
 use embassy_time::driver::{AlarmHandle, Driver};
-use embassy_util::blocking_mutex::raw::CriticalSectionRawMutex;
-use embassy_util::blocking_mutex::Mutex;
 
 use crate::interrupt::{Interrupt, InterruptExt};
 use crate::{interrupt, pac};
diff --git a/embassy-stm32/Cargo.toml b/embassy-stm32/Cargo.toml
index c47ea0bca..7a8e5c59b 100644
--- a/embassy-stm32/Cargo.toml
+++ b/embassy-stm32/Cargo.toml
@@ -31,7 +31,7 @@ flavors = [
 ]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-executor = { version = "0.1.0", path = "../embassy-executor" }
 embassy-time = { version = "0.1.0", path = "../embassy-time", optional = true }
 embassy-cortex-m = { version = "0.1.0", path = "../embassy-cortex-m", features = ["prio-bits-4"]}
@@ -72,7 +72,7 @@ quote = "1.0.15"
 stm32-metapac = { version = "0.1.0", path = "../stm32-metapac", default-features = false, features = ["metadata"]}
 
 [features]
-defmt = ["dep:defmt", "bxcan/unstable-defmt", "embassy-util/defmt", "embassy-executor/defmt", "embassy-embedded-hal/defmt", "embedded-io?/defmt", "embassy-usb?/defmt"]
+defmt = ["dep:defmt", "bxcan/unstable-defmt", "embassy-sync/defmt", "embassy-executor/defmt", "embassy-embedded-hal/defmt", "embedded-io?/defmt", "embassy-usb?/defmt"]
 sdmmc-rs = ["embedded-sdmmc"]
 net = ["embassy-net" ]
 memory-x = ["stm32-metapac/memory-x"]
diff --git a/embassy-stm32/src/dcmi.rs b/embassy-stm32/src/dcmi.rs
index bbb9a12cb..fb9dc9d08 100644
--- a/embassy-stm32/src/dcmi.rs
+++ b/embassy-stm32/src/dcmi.rs
@@ -1,7 +1,7 @@
 use core::task::Poll;
 
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::gpio::sealed::AFType;
diff --git a/embassy-stm32/src/dma/bdma.rs b/embassy-stm32/src/dma/bdma.rs
index bd2cd5b57..674255ddc 100644
--- a/embassy-stm32/src/dma/bdma.rs
+++ b/embassy-stm32/src/dma/bdma.rs
@@ -3,7 +3,7 @@
 use core::sync::atomic::{fence, Ordering};
 use core::task::Waker;
 
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use super::{TransferOptions, Word, WordSize};
 use crate::_generated::BDMA_CHANNEL_COUNT;
diff --git a/embassy-stm32/src/dma/dma.rs b/embassy-stm32/src/dma/dma.rs
index 0c66005c7..a45b8780b 100644
--- a/embassy-stm32/src/dma/dma.rs
+++ b/embassy-stm32/src/dma/dma.rs
@@ -1,7 +1,7 @@
 use core::sync::atomic::{fence, Ordering};
 use core::task::Waker;
 
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use super::{Burst, FlowControl, Request, TransferOptions, Word, WordSize};
 use crate::_generated::DMA_CHANNEL_COUNT;
diff --git a/embassy-stm32/src/dma/gpdma.rs b/embassy-stm32/src/dma/gpdma.rs
index 1aea6c65d..bde8c3ef3 100644
--- a/embassy-stm32/src/dma/gpdma.rs
+++ b/embassy-stm32/src/dma/gpdma.rs
@@ -1,7 +1,7 @@
 use core::sync::atomic::{fence, Ordering};
 use core::task::Waker;
 
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use super::{Request, TransferOptions, Word, WordSize};
 use crate::_generated::GPDMA_CHANNEL_COUNT;
diff --git a/embassy-stm32/src/eth/v1/mod.rs b/embassy-stm32/src/eth/v1/mod.rs
index 37593914f..1ab0438ad 100644
--- a/embassy-stm32/src/eth/v1/mod.rs
+++ b/embassy-stm32/src/eth/v1/mod.rs
@@ -7,7 +7,7 @@ use core::task::Waker;
 use embassy_cortex_m::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
 use embassy_hal_common::{into_ref, PeripheralRef};
 use embassy_net::{Device, DeviceCapabilities, LinkState, PacketBuf, MTU};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use crate::gpio::sealed::{AFType, Pin as __GpioPin};
 use crate::gpio::{AnyPin, Speed};
diff --git a/embassy-stm32/src/eth/v2/mod.rs b/embassy-stm32/src/eth/v2/mod.rs
index 1bc1fb72e..d67c3c5e4 100644
--- a/embassy-stm32/src/eth/v2/mod.rs
+++ b/embassy-stm32/src/eth/v2/mod.rs
@@ -5,7 +5,7 @@ use core::task::Waker;
 use embassy_cortex_m::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
 use embassy_hal_common::{into_ref, PeripheralRef};
 use embassy_net::{Device, DeviceCapabilities, LinkState, PacketBuf, MTU};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use crate::gpio::sealed::{AFType, Pin as _};
 use crate::gpio::{AnyPin, Speed};
diff --git a/embassy-stm32/src/exti.rs b/embassy-stm32/src/exti.rs
index ecb180bbe..935149b13 100644
--- a/embassy-stm32/src/exti.rs
+++ b/embassy-stm32/src/exti.rs
@@ -4,7 +4,7 @@ use core::pin::Pin;
 use core::task::{Context, Poll};
 
 use embassy_hal_common::impl_peripheral;
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 
 use crate::gpio::{AnyPin, Input, Pin as GpioPin};
 use crate::pac::exti::regs::Lines;
diff --git a/embassy-stm32/src/i2c/v2.rs b/embassy-stm32/src/i2c/v2.rs
index b4303d3d4..07a3105da 100644
--- a/embassy-stm32/src/i2c/v2.rs
+++ b/embassy-stm32/src/i2c/v2.rs
@@ -5,7 +5,7 @@ use atomic_polyfill::{AtomicUsize, Ordering};
 use embassy_embedded_hal::SetConfig;
 use embassy_hal_common::drop::OnDrop;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 
 use crate::dma::NoDma;
diff --git a/embassy-stm32/src/rng.rs b/embassy-stm32/src/rng.rs
index 81e28f355..520f2ab9a 100644
--- a/embassy-stm32/src/rng.rs
+++ b/embassy-stm32/src/rng.rs
@@ -3,7 +3,7 @@
 use core::task::Poll;
 
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 use rand_core::{CryptoRng, RngCore};
 
diff --git a/embassy-stm32/src/sdmmc/mod.rs b/embassy-stm32/src/sdmmc/mod.rs
index 3ad31ec87..67758c492 100644
--- a/embassy-stm32/src/sdmmc/mod.rs
+++ b/embassy-stm32/src/sdmmc/mod.rs
@@ -5,7 +5,7 @@ use core::task::Poll;
 
 use embassy_hal_common::drop::OnDrop;
 use embassy_hal_common::{into_ref, PeripheralRef};
-use embassy_util::waitqueue::AtomicWaker;
+use embassy_sync::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 use sdio_host::{BusWidth, CardCapacity, CardStatus, CurrentState, SDStatus, CID, CSD, OCR, SCR};
 
@@ -1514,8 +1514,8 @@ foreach_peripheral!(
                 INNER
             }
 
-            fn state() -> &'static ::embassy_util::waitqueue::AtomicWaker {
-                static WAKER: ::embassy_util::waitqueue::AtomicWaker = ::embassy_util::waitqueue::AtomicWaker::new();
+            fn state() -> &'static ::embassy_sync::waitqueue::AtomicWaker {
+                static WAKER: ::embassy_sync::waitqueue::AtomicWaker = ::embassy_sync::waitqueue::AtomicWaker::new();
                 &WAKER
             }
         }
diff --git a/embassy-stm32/src/time_driver.rs b/embassy-stm32/src/time_driver.rs
index 7f4723162..6989a43d3 100644
--- a/embassy-stm32/src/time_driver.rs
+++ b/embassy-stm32/src/time_driver.rs
@@ -4,10 +4,10 @@ use core::sync::atomic::{compiler_fence, Ordering};
 use core::{mem, ptr};
 
 use atomic_polyfill::{AtomicU32, AtomicU8};
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
+use embassy_sync::blocking_mutex::Mutex;
 use embassy_time::driver::{AlarmHandle, Driver};
 use embassy_time::TICKS_PER_SECOND;
-use embassy_util::blocking_mutex::raw::CriticalSectionRawMutex;
-use embassy_util::blocking_mutex::Mutex;
 use stm32_metapac::timer::regs;
 
 use crate::interrupt::{CriticalSection, InterruptExt};
diff --git a/embassy-stm32/src/usart/buffered.rs b/embassy-stm32/src/usart/buffered.rs
index ec2231e43..a7fa43894 100644
--- a/embassy-stm32/src/usart/buffered.rs
+++ b/embassy-stm32/src/usart/buffered.rs
@@ -4,7 +4,7 @@ use core::task::Poll;
 use atomic_polyfill::{compiler_fence, Ordering};
 use embassy_cortex_m::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
 use embassy_hal_common::ring_buffer::RingBuffer;
-use embassy_util::waitqueue::WakerRegistration;
+use embassy_sync::waitqueue::WakerRegistration;
 use futures::future::poll_fn;
 
 use super::*;
diff --git a/embassy-stm32/src/usb/usb.rs b/embassy-stm32/src/usb/usb.rs
index 3861e42d0..db965824a 100644
--- a/embassy-stm32/src/usb/usb.rs
+++ b/embassy-stm32/src/usb/usb.rs
@@ -6,10 +6,10 @@ use core::task::Poll;
 
 use atomic_polyfill::{AtomicBool, AtomicU8};
 use embassy_hal_common::into_ref;
+use embassy_sync::waitqueue::AtomicWaker;
 use embassy_time::{block_for, Duration};
 use embassy_usb::driver::{self, EndpointAllocError, EndpointError, Event, Unsupported};
 use embassy_usb::types::{EndpointAddress, EndpointInfo, EndpointType, UsbDirection};
-use embassy_util::waitqueue::AtomicWaker;
 use futures::future::poll_fn;
 use futures::Future;
 use pac::common::{Reg, RW};
diff --git a/embassy-util/Cargo.toml b/embassy-sync/Cargo.toml
index b54a58b46..0d14bba55 100644
--- a/embassy-util/Cargo.toml
+++ b/embassy-sync/Cargo.toml
@@ -1,11 +1,11 @@
 [package]
-name = "embassy-util"
+name = "embassy-sync"
 version = "0.1.0"
 edition = "2021"
 
 [package.metadata.embassy_docs]
-src_base = "https://github.com/embassy-rs/embassy/blob/embassy-util-v$VERSION/embassy-util/src/"
-src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-util/src/"
+src_base = "https://github.com/embassy-rs/embassy/blob/embassy-sync-v$VERSION/embassy-sync/src/"
+src_base_git = "https://github.com/embassy-rs/embassy/blob/$COMMIT/embassy-sync/src/"
 features = ["nightly"]
 target = "thumbv7em-none-eabi"
 
diff --git a/embassy-util/build.rs b/embassy-sync/build.rs
index 6fe82b44f..6fe82b44f 100644
--- a/embassy-util/build.rs
+++ b/embassy-sync/build.rs
diff --git a/embassy-util/src/blocking_mutex/mod.rs b/embassy-sync/src/blocking_mutex/mod.rs
index 8a4a4c642..8a4a4c642 100644
--- a/embassy-util/src/blocking_mutex/mod.rs
+++ b/embassy-sync/src/blocking_mutex/mod.rs
diff --git a/embassy-util/src/blocking_mutex/raw.rs b/embassy-sync/src/blocking_mutex/raw.rs
index 15796f1b2..15796f1b2 100644
--- a/embassy-util/src/blocking_mutex/raw.rs
+++ b/embassy-sync/src/blocking_mutex/raw.rs
diff --git a/embassy-util/src/channel/mod.rs b/embassy-sync/src/channel/mod.rs
index 5df1f5c5c..5df1f5c5c 100644
--- a/embassy-util/src/channel/mod.rs
+++ b/embassy-sync/src/channel/mod.rs
diff --git a/embassy-util/src/channel/mpmc.rs b/embassy-sync/src/channel/mpmc.rs
index 263f29bfc..7bebd3412 100644
--- a/embassy-util/src/channel/mpmc.rs
+++ b/embassy-sync/src/channel/mpmc.rs
@@ -373,8 +373,8 @@ where
     /// Establish a new bounded channel. For example, to create one with a NoopMutex:
     ///
     /// ```
-    /// use embassy_util::channel::mpmc::Channel;
-    /// use embassy_util::blocking_mutex::raw::NoopRawMutex;
+    /// use embassy_sync::channel::mpmc::Channel;
+    /// use embassy_sync::blocking_mutex::raw::NoopRawMutex;
     ///
     /// // Declare a bounded channel of 3 u32s.
     /// let mut channel = Channel::<NoopRawMutex, u32, 3>::new();
diff --git a/embassy-util/src/channel/pubsub/mod.rs b/embassy-sync/src/channel/pubsub/mod.rs
index ecc8fbd8f..f62b4d118 100644
--- a/embassy-util/src/channel/pubsub/mod.rs
+++ b/embassy-sync/src/channel/pubsub/mod.rs
@@ -33,9 +33,9 @@ pub use subscriber::{DynSubscriber, Subscriber};
 /// ## Example
 ///
 /// ```
-/// # use embassy_util::blocking_mutex::raw::NoopRawMutex;
-/// # use embassy_util::channel::pubsub::WaitResult;
-/// # use embassy_util::channel::pubsub::PubSubChannel;
+/// # use embassy_sync::blocking_mutex::raw::NoopRawMutex;
+/// # use embassy_sync::channel::pubsub::WaitResult;
+/// # use embassy_sync::channel::pubsub::PubSubChannel;
 /// # use futures_executor::block_on;
 /// # let test = async {
 /// // Create the channel. This can be static as well
diff --git a/embassy-util/src/channel/pubsub/publisher.rs b/embassy-sync/src/channel/pubsub/publisher.rs
index 705797f60..705797f60 100644
--- a/embassy-util/src/channel/pubsub/publisher.rs
+++ b/embassy-sync/src/channel/pubsub/publisher.rs
diff --git a/embassy-util/src/channel/pubsub/subscriber.rs b/embassy-sync/src/channel/pubsub/subscriber.rs
index b9a2cbe18..b9a2cbe18 100644
--- a/embassy-util/src/channel/pubsub/subscriber.rs
+++ b/embassy-sync/src/channel/pubsub/subscriber.rs
diff --git a/embassy-util/src/channel/signal.rs b/embassy-sync/src/channel/signal.rs
index 05889f5a4..9279266c1 100644
--- a/embassy-util/src/channel/signal.rs
+++ b/embassy-sync/src/channel/signal.rs
@@ -19,7 +19,7 @@ use core::task::{Context, Poll, Waker};
 /// Signals are generally declared as `static`s and then borrowed as required.
 ///
 /// ```
-/// use embassy_util::channel::signal::Signal;
+/// use embassy_sync::channel::signal::Signal;
 ///
 /// enum SomeCommand {
 ///   On,
diff --git a/embassy-sync/src/fmt.rs b/embassy-sync/src/fmt.rs
new file mode 100644
index 000000000..f8bb0a035
--- /dev/null
+++ b/embassy-sync/src/fmt.rs
@@ -0,0 +1,228 @@
+#![macro_use]
+#![allow(unused_macros)]
+
+#[cfg(all(feature = "defmt", feature = "log"))]
+compile_error!("You may not enable both `defmt` and `log` features.");
+
+macro_rules! assert {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert!($($x)*);
+        }
+    };
+}
+
+macro_rules! assert_eq {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert_eq!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert_eq!($($x)*);
+        }
+    };
+}
+
+macro_rules! assert_ne {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::assert_ne!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::assert_ne!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert_eq {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert_eq!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert_eq!($($x)*);
+        }
+    };
+}
+
+macro_rules! debug_assert_ne {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::debug_assert_ne!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug_assert_ne!($($x)*);
+        }
+    };
+}
+
+macro_rules! todo {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::todo!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::todo!($($x)*);
+        }
+    };
+}
+
+macro_rules! unreachable {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::unreachable!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::unreachable!($($x)*);
+        }
+    };
+}
+
+macro_rules! panic {
+    ($($x:tt)*) => {
+        {
+            #[cfg(not(feature = "defmt"))]
+            ::core::panic!($($x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::panic!($($x)*);
+        }
+    };
+}
+
+macro_rules! trace {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::trace!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::trace!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! debug {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::debug!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::debug!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! info {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::info!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::info!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! warn {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::warn!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::warn!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+macro_rules! error {
+    ($s:literal $(, $x:expr)* $(,)?) => {
+        {
+            #[cfg(feature = "log")]
+            ::log::error!($s $(, $x)*);
+            #[cfg(feature = "defmt")]
+            ::defmt::error!($s $(, $x)*);
+            #[cfg(not(any(feature = "log", feature="defmt")))]
+            let _ = ($( & $x ),*);
+        }
+    };
+}
+
+#[cfg(feature = "defmt")]
+macro_rules! unwrap {
+    ($($x:tt)*) => {
+        ::defmt::unwrap!($($x)*)
+    };
+}
+
+#[cfg(not(feature = "defmt"))]
+macro_rules! unwrap {
+    ($arg:expr) => {
+        match $crate::fmt::Try::into_result($arg) {
+            ::core::result::Result::Ok(t) => t,
+            ::core::result::Result::Err(e) => {
+                ::core::panic!("unwrap of `{}` failed: {:?}", ::core::stringify!($arg), e);
+            }
+        }
+    };
+    ($arg:expr, $($msg:expr),+ $(,)? ) => {
+        match $crate::fmt::Try::into_result($arg) {
+            ::core::result::Result::Ok(t) => t,
+            ::core::result::Result::Err(e) => {
+                ::core::panic!("unwrap of `{}` failed: {}: {:?}", ::core::stringify!($arg), ::core::format_args!($($msg,)*), e);
+            }
+        }
+    }
+}
+
+#[cfg(feature = "defmt-timestamp-uptime")]
+defmt::timestamp! {"{=u64:us}", crate::time::Instant::now().as_micros() }
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+pub struct NoneError;
+
+pub trait Try {
+    type Ok;
+    type Error;
+    fn into_result(self) -> Result<Self::Ok, Self::Error>;
+}
+
+impl<T> Try for Option<T> {
+    type Ok = T;
+    type Error = NoneError;
+
+    #[inline]
+    fn into_result(self) -> Result<T, NoneError> {
+        self.ok_or(NoneError)
+    }
+}
+
+impl<T, E> Try for Result<T, E> {
+    type Ok = T;
+    type Error = E;
+
+    #[inline]
+    fn into_result(self) -> Self {
+        self
+    }
+}
diff --git a/embassy-util/src/lib.rs b/embassy-sync/src/lib.rs
index 8ec3300d9..7d8815903 100644
--- a/embassy-util/src/lib.rs
+++ b/embassy-sync/src/lib.rs
@@ -15,9 +15,3 @@ pub mod channel;
 pub mod mutex;
 pub mod pipe;
 pub mod waitqueue;
-
-mod select;
-mod yield_now;
-
-pub use select::*;
-pub use yield_now::*;
diff --git a/embassy-util/src/mutex.rs b/embassy-sync/src/mutex.rs
index 75a6e8dd3..75a6e8dd3 100644
--- a/embassy-util/src/mutex.rs
+++ b/embassy-sync/src/mutex.rs
diff --git a/embassy-util/src/pipe.rs b/embassy-sync/src/pipe.rs
index d85b843e4..7d64b648e 100644
--- a/embassy-util/src/pipe.rs
+++ b/embassy-sync/src/pipe.rs
@@ -241,8 +241,8 @@ where
     /// Establish a new bounded pipe. For example, to create one with a NoopMutex:
     ///
     /// ```
-    /// use embassy_util::pipe::Pipe;
-    /// use embassy_util::blocking_mutex::raw::NoopRawMutex;
+    /// use embassy_sync::pipe::Pipe;
+    /// use embassy_sync::blocking_mutex::raw::NoopRawMutex;
     ///
     /// // Declare a bounded pipe, with a buffer of 256 bytes.
     /// let mut pipe = Pipe::<NoopRawMutex, 256>::new();
diff --git a/embassy-util/src/ring_buffer.rs b/embassy-sync/src/ring_buffer.rs
index 521084024..521084024 100644
--- a/embassy-util/src/ring_buffer.rs
+++ b/embassy-sync/src/ring_buffer.rs
diff --git a/embassy-util/src/waitqueue/mod.rs b/embassy-sync/src/waitqueue/mod.rs
index 6661a6b61..6661a6b61 100644
--- a/embassy-util/src/waitqueue/mod.rs
+++ b/embassy-sync/src/waitqueue/mod.rs
diff --git a/embassy-util/src/waitqueue/multi_waker.rs b/embassy-sync/src/waitqueue/multi_waker.rs
index 325d2cb3a..325d2cb3a 100644
--- a/embassy-util/src/waitqueue/multi_waker.rs
+++ b/embassy-sync/src/waitqueue/multi_waker.rs
diff --git a/embassy-util/src/waitqueue/waker.rs b/embassy-sync/src/waitqueue/waker.rs
index 64e300eb8..64e300eb8 100644
--- a/embassy-util/src/waitqueue/waker.rs
+++ b/embassy-sync/src/waitqueue/waker.rs
diff --git a/embassy-usb-hid/Cargo.toml b/embassy-usb-hid/Cargo.toml
index 5e9cfebf7..730351485 100644
--- a/embassy-usb-hid/Cargo.toml
+++ b/embassy-usb-hid/Cargo.toml
@@ -14,7 +14,7 @@ default = ["usbd-hid"]
 usbd-hid = ["dep:usbd-hid", "ssmarshal"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-usb = { version = "0.1.0", path = "../embassy-usb" }
 
 defmt = { version = "0.3", optional = true }
diff --git a/embassy-usb-ncm/Cargo.toml b/embassy-usb-ncm/Cargo.toml
index 47c1f36bd..15d3db96f 100644
--- a/embassy-usb-ncm/Cargo.toml
+++ b/embassy-usb-ncm/Cargo.toml
@@ -10,7 +10,7 @@ features = ["defmt"]
 target = "thumbv7em-none-eabi"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-usb = { version = "0.1.0", path = "../embassy-usb" }
 
 defmt = { version = "0.3", optional = true }
diff --git a/embassy-usb-serial/Cargo.toml b/embassy-usb-serial/Cargo.toml
index 633610471..9788588e9 100644
--- a/embassy-usb-serial/Cargo.toml
+++ b/embassy-usb-serial/Cargo.toml
@@ -10,7 +10,7 @@ features = ["defmt"]
 target = "thumbv7em-none-eabi"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../embassy-sync" }
 embassy-usb = { version = "0.1.0", path = "../embassy-usb" }
 
 defmt = { version = "0.3", optional = true }
diff --git a/embassy-usb-serial/src/lib.rs b/embassy-usb-serial/src/lib.rs
index e561be9df..f3de2ec1b 100644
--- a/embassy-usb-serial/src/lib.rs
+++ b/embassy-usb-serial/src/lib.rs
@@ -9,11 +9,11 @@ use core::cell::Cell;
 use core::mem::{self, MaybeUninit};
 use core::sync::atomic::{AtomicBool, Ordering};
 
+use embassy_sync::blocking_mutex::CriticalSectionMutex;
 use embassy_usb::control::{self, ControlHandler, InResponse, OutResponse, Request};
 use embassy_usb::driver::{Driver, Endpoint, EndpointError, EndpointIn, EndpointOut};
 use embassy_usb::types::*;
 use embassy_usb::Builder;
-use embassy_util::blocking_mutex::CriticalSectionMutex;
 
 /// This should be used as `device_class` when building the `UsbDevice`.
 pub const USB_CLASS_CDC: u8 = 0x02;
diff --git a/embassy-usb/Cargo.toml b/embassy-usb/Cargo.toml
index 6adbd399b..8cad4d314 100644
--- a/embassy-usb/Cargo.toml
+++ b/embassy-usb/Cargo.toml
@@ -10,7 +10,7 @@ features = ["defmt"]
 target = "thumbv7em-none-eabi"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../embassy-util" }
+embassy-futures = { version = "0.1.0", path = "../embassy-futures" }
 
 defmt = { version = "0.3", optional = true }
 log = { version = "0.4.14", optional = true }
diff --git a/embassy-usb/src/lib.rs b/embassy-usb/src/lib.rs
index 3f6e13472..5a3f8ba88 100644
--- a/embassy-usb/src/lib.rs
+++ b/embassy-usb/src/lib.rs
@@ -12,7 +12,7 @@ mod descriptor_reader;
 pub mod driver;
 pub mod types;
 
-use embassy_util::{select, Either};
+use embassy_futures::{select, Either};
 use heapless::Vec;
 
 pub use self::builder::{Builder, Config};
diff --git a/examples/boot/application/nrf/Cargo.toml b/examples/boot/application/nrf/Cargo.toml
index ef9346639..b9ff92578 100644
--- a/examples/boot/application/nrf/Cargo.toml
+++ b/examples/boot/application/nrf/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-nrf-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync" }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly"] }
 embassy-nrf = { version = "0.1.0", path = "../../../../embassy-nrf", features = ["time-driver-rtc1", "gpiote", "nightly", "nrf52840"] }
diff --git a/examples/boot/application/stm32f3/Cargo.toml b/examples/boot/application/stm32f3/Cargo.toml
index 27eafa653..f143d1e8d 100644
--- a/examples/boot/application/stm32f3/Cargo.toml
+++ b/examples/boot/application/stm32f3/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32f3-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f303re", "time-driver-any", "exti"]  }
diff --git a/examples/boot/application/stm32f7/Cargo.toml b/examples/boot/application/stm32f7/Cargo.toml
index 7de0b82d7..29c87eee1 100644
--- a/examples/boot/application/stm32f7/Cargo.toml
+++ b/examples/boot/application/stm32f7/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32f7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32f767zi", "time-driver-any", "exti"]  }
diff --git a/examples/boot/application/stm32h7/Cargo.toml b/examples/boot/application/stm32h7/Cargo.toml
index 65d34c70b..5669527fe 100644
--- a/examples/boot/application/stm32h7/Cargo.toml
+++ b/examples/boot/application/stm32h7/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32h7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32h743zi", "time-driver-any", "exti"]  }
diff --git a/examples/boot/application/stm32l0/Cargo.toml b/examples/boot/application/stm32l0/Cargo.toml
index 8f37869e3..48624d5ec 100644
--- a/examples/boot/application/stm32l0/Cargo.toml
+++ b/examples/boot/application/stm32l0/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32l0-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l072cz", "time-driver-any", "exti", "memory-x"]  }
diff --git a/examples/boot/application/stm32l1/Cargo.toml b/examples/boot/application/stm32l1/Cargo.toml
index 6abf1986d..00b638ca5 100644
--- a/examples/boot/application/stm32l1/Cargo.toml
+++ b/examples/boot/application/stm32l1/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32l1-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l151cb-a", "time-driver-any", "exti"]  }
diff --git a/examples/boot/application/stm32l4/Cargo.toml b/examples/boot/application/stm32l4/Cargo.toml
index 6f2d12ff1..51ba730d5 100644
--- a/examples/boot/application/stm32l4/Cargo.toml
+++ b/examples/boot/application/stm32l4/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32l4-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32l475vg", "time-driver-any", "exti"]  }
diff --git a/examples/boot/application/stm32wl/Cargo.toml b/examples/boot/application/stm32wl/Cargo.toml
index be97d4ebb..182acf694 100644
--- a/examples/boot/application/stm32wl/Cargo.toml
+++ b/examples/boot/application/stm32wl/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-boot-stm32wl-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../../../embassy-executor", features = ["nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../../../embassy-time", features = ["nightly", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../../../embassy-stm32", features = ["unstable-traits", "nightly", "stm32wl55jc-cm4", "time-driver-any", "exti"]  }
diff --git a/examples/nrf-rtos-trace/Cargo.toml b/examples/nrf-rtos-trace/Cargo.toml
index b0907f92c..87c9f33f5 100644
--- a/examples/nrf-rtos-trace/Cargo.toml
+++ b/examples/nrf-rtos-trace/Cargo.toml
@@ -8,14 +8,14 @@ default = ["log", "nightly"]
 nightly = ["embassy-executor/nightly", "embassy-nrf/nightly", "embassy-nrf/unstable-traits"]
 log = [
     "dep:log",
-    "embassy-util/log",
+    "embassy-sync/log",
     "embassy-executor/log",
     "embassy-time/log",
     "embassy-nrf/log",
 ]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util" }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync" }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features=["rtos-trace", "rtos-trace-interrupt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time" }
 embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac"] }
diff --git a/examples/nrf/Cargo.toml b/examples/nrf/Cargo.toml
index 17f29b8fb..b0af0c86e 100644
--- a/examples/nrf/Cargo.toml
+++ b/examples/nrf/Cargo.toml
@@ -8,7 +8,8 @@ default = ["nightly"]
 nightly = ["embassy-executor/nightly", "embassy-nrf/nightly", "embassy-nrf/unstable-traits", "embassy-usb", "embassy-usb-serial", "embassy-usb-hid", "embassy-usb-ncm", "embedded-io/async", "embassy-net"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac"] }
diff --git a/examples/nrf/src/bin/channel.rs b/examples/nrf/src/bin/channel.rs
index 195200988..8371fd0af 100644
--- a/examples/nrf/src/bin/channel.rs
+++ b/examples/nrf/src/bin/channel.rs
@@ -5,9 +5,9 @@
 use defmt::unwrap;
 use embassy_executor::Spawner;
 use embassy_nrf::gpio::{Level, Output, OutputDrive};
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use embassy_time::{Duration, Timer};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
 use {defmt_rtt as _, panic_probe as _};
 
 enum LedState {
diff --git a/examples/nrf/src/bin/channel_sender_receiver.rs b/examples/nrf/src/bin/channel_sender_receiver.rs
index d250b6a5c..55d1fccb2 100644
--- a/examples/nrf/src/bin/channel_sender_receiver.rs
+++ b/examples/nrf/src/bin/channel_sender_receiver.rs
@@ -5,9 +5,9 @@
 use defmt::unwrap;
 use embassy_executor::Spawner;
 use embassy_nrf::gpio::{AnyPin, Level, Output, OutputDrive, Pin};
+use embassy_sync::blocking_mutex::raw::NoopRawMutex;
+use embassy_sync::channel::mpmc::{Channel, Receiver, Sender};
 use embassy_time::{Duration, Timer};
-use embassy_util::blocking_mutex::raw::NoopRawMutex;
-use embassy_util::channel::mpmc::{Channel, Receiver, Sender};
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
diff --git a/examples/nrf/src/bin/mutex.rs b/examples/nrf/src/bin/mutex.rs
index 876297883..c402c6ba1 100644
--- a/examples/nrf/src/bin/mutex.rs
+++ b/examples/nrf/src/bin/mutex.rs
@@ -4,9 +4,9 @@
 
 use defmt::{info, unwrap};
 use embassy_executor::Spawner;
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::mutex::Mutex;
 use embassy_time::{Duration, Timer};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::mutex::Mutex;
 use {defmt_rtt as _, panic_probe as _};
 
 static MUTEX: Mutex<ThreadModeRawMutex, u32> = Mutex::new(0);
diff --git a/examples/nrf/src/bin/pubsub.rs b/examples/nrf/src/bin/pubsub.rs
index 1d90217f2..64fed641b 100644
--- a/examples/nrf/src/bin/pubsub.rs
+++ b/examples/nrf/src/bin/pubsub.rs
@@ -4,9 +4,9 @@
 
 use defmt::unwrap;
 use embassy_executor::Spawner;
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::pubsub::{DynSubscriber, PubSubChannel, Subscriber};
 use embassy_time::{Duration, Timer};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::pubsub::{DynSubscriber, PubSubChannel, Subscriber};
 use {defmt_rtt as _, panic_probe as _};
 
 /// Create the message bus. It has a queue of 4, supports 3 subscribers and 1 publisher
diff --git a/examples/nrf/src/bin/uart_split.rs b/examples/nrf/src/bin/uart_split.rs
index dab8e475d..88b9c0a81 100644
--- a/examples/nrf/src/bin/uart_split.rs
+++ b/examples/nrf/src/bin/uart_split.rs
@@ -7,8 +7,8 @@ use embassy_executor::Spawner;
 use embassy_nrf::peripherals::UARTE0;
 use embassy_nrf::uarte::UarteRx;
 use embassy_nrf::{interrupt, uarte};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use {defmt_rtt as _, panic_probe as _};
 
 static CHANNEL: Channel<ThreadModeRawMutex, [u8; 8], 1> = Channel::new();
diff --git a/examples/nrf/src/bin/usb_ethernet.rs b/examples/nrf/src/bin/usb_ethernet.rs
index d427f7563..0200d8807 100644
--- a/examples/nrf/src/bin/usb_ethernet.rs
+++ b/examples/nrf/src/bin/usb_ethernet.rs
@@ -14,10 +14,10 @@ use embassy_net::{PacketBox, PacketBoxExt, PacketBuf, Stack, StackResources};
 use embassy_nrf::rng::Rng;
 use embassy_nrf::usb::{Driver, PowerUsb};
 use embassy_nrf::{interrupt, pac, peripherals};
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use embassy_usb::{Builder, Config, UsbDevice};
 use embassy_usb_ncm::{CdcNcmClass, Receiver, Sender, State};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
 use embedded_io::asynch::{Read, Write};
 use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
diff --git a/examples/nrf/src/bin/usb_hid_keyboard.rs b/examples/nrf/src/bin/usb_hid_keyboard.rs
index cf0078eec..d7c6dafdf 100644
--- a/examples/nrf/src/bin/usb_hid_keyboard.rs
+++ b/examples/nrf/src/bin/usb_hid_keyboard.rs
@@ -8,14 +8,14 @@ use core::sync::atomic::{AtomicBool, Ordering};
 
 use defmt::*;
 use embassy_executor::Spawner;
+use embassy_futures::{select, Either};
 use embassy_nrf::gpio::{Input, Pin, Pull};
 use embassy_nrf::usb::{Driver, PowerUsb};
 use embassy_nrf::{interrupt, pac};
+use embassy_sync::channel::signal::Signal;
 use embassy_usb::control::OutResponse;
 use embassy_usb::{Builder, Config, DeviceStateHandler};
 use embassy_usb_hid::{HidReaderWriter, ReportId, RequestHandler, State};
-use embassy_util::channel::signal::Signal;
-use embassy_util::{select, Either};
 use futures::future::join;
 use usbd_hid::descriptor::{KeyboardReport, SerializedDescriptor};
 use {defmt_rtt as _, panic_probe as _};
diff --git a/examples/rp/Cargo.toml b/examples/rp/Cargo.toml
index c2dcf429a..d804a660b 100644
--- a/examples/rp/Cargo.toml
+++ b/examples/rp/Cargo.toml
@@ -5,7 +5,7 @@ version = "0.1.0"
 
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
 embassy-rp = { version = "0.1.0", path = "../../embassy-rp", features = ["defmt", "unstable-traits", "nightly", "unstable-pac"] }
diff --git a/examples/std/Cargo.toml b/examples/std/Cargo.toml
index 164a2b42d..c7cec6b19 100644
--- a/examples/std/Cargo.toml
+++ b/examples/std/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-std-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["log"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["log"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["log", "std", "nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["log", "std", "nightly"] }
 embassy-net = { version = "0.1.0", path = "../../embassy-net", features=[ "std", "log", "medium-ethernet", "tcp", "udp", "dhcpv4", "pool-16"] }
diff --git a/examples/stm32f0/Cargo.toml b/examples/stm32f0/Cargo.toml
index 8476200d4..cd2995d2c 100644
--- a/examples/stm32f0/Cargo.toml
+++ b/examples/stm32f0/Cargo.toml
@@ -11,7 +11,7 @@ cortex-m-rt = "0.7.0"
 defmt = "0.3"
 defmt-rtt = "0.3"
 panic-probe = "0.3"
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "memory-x", "stm32f030f4", "time-driver-any"] }
diff --git a/examples/stm32f1/Cargo.toml b/examples/stm32f1/Cargo.toml
index fbc96400c..8660e743d 100644
--- a/examples/stm32f1/Cargo.toml
+++ b/examples/stm32f1/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32f1-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f103c8", "unstable-pac", "memory-x", "time-driver-any"]  }
diff --git a/examples/stm32f2/Cargo.toml b/examples/stm32f2/Cargo.toml
index 27894df50..b4bff4d85 100644
--- a/examples/stm32f2/Cargo.toml
+++ b/examples/stm32f2/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32f2-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f207zg", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
diff --git a/examples/stm32f3/Cargo.toml b/examples/stm32f3/Cargo.toml
index 4e6b0ea1e..d152b145f 100644
--- a/examples/stm32f3/Cargo.toml
+++ b/examples/stm32f3/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32f3-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32f303ze", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
diff --git a/examples/stm32f3/src/bin/button_events.rs b/examples/stm32f3/src/bin/button_events.rs
index 61fc6dcab..edf34b4d1 100644
--- a/examples/stm32f3/src/bin/button_events.rs
+++ b/examples/stm32f3/src/bin/button_events.rs
@@ -15,9 +15,9 @@ use embassy_executor::Spawner;
 use embassy_stm32::exti::ExtiInput;
 use embassy_stm32::gpio::{AnyPin, Input, Level, Output, Pin, Pull, Speed};
 use embassy_stm32::peripherals::PA0;
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use embassy_time::{with_timeout, Duration, Timer};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
 use {defmt_rtt as _, panic_probe as _};
 
 struct Leds<'a> {
diff --git a/examples/stm32f4/Cargo.toml b/examples/stm32f4/Cargo.toml
index f93a1d0f9..9bfdda92d 100644
--- a/examples/stm32f4/Cargo.toml
+++ b/examples/stm32f4/Cargo.toml
@@ -5,7 +5,7 @@ version = "0.1.0"
 
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32f429zi", "unstable-pac", "memory-x", "time-driver-any", "exti"]  }
diff --git a/examples/stm32f7/Cargo.toml b/examples/stm32f7/Cargo.toml
index e286d2310..a446fe3fb 100644
--- a/examples/stm32f7/Cargo.toml
+++ b/examples/stm32f7/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32f7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "net", "stm32f767zi", "unstable-pac", "time-driver-any", "exti"]  }
diff --git a/examples/stm32g0/Cargo.toml b/examples/stm32g0/Cargo.toml
index 5c80d43eb..30f2b86f8 100644
--- a/examples/stm32g0/Cargo.toml
+++ b/examples/stm32g0/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32g0-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "time-driver-any", "stm32g071rb", "memory-x", "unstable-pac", "exti"]  }
diff --git a/examples/stm32g4/Cargo.toml b/examples/stm32g4/Cargo.toml
index 74c645cf5..f81df0b70 100644
--- a/examples/stm32g4/Cargo.toml
+++ b/examples/stm32g4/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32g4-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "time-driver-any", "stm32g491re", "memory-x", "unstable-pac", "exti"]  }
diff --git a/examples/stm32h7/Cargo.toml b/examples/stm32h7/Cargo.toml
index fc5f74f99..0f76f3226 100644
--- a/examples/stm32h7/Cargo.toml
+++ b/examples/stm32h7/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32h7-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32h743bi", "net", "time-driver-any", "exti", "unstable-pac", "unstable-traits"] }
diff --git a/examples/stm32h7/src/bin/signal.rs b/examples/stm32h7/src/bin/signal.rs
index be2ac268e..ae41b07a9 100644
--- a/examples/stm32h7/src/bin/signal.rs
+++ b/examples/stm32h7/src/bin/signal.rs
@@ -4,8 +4,8 @@
 
 use defmt::{info, unwrap};
 use embassy_executor::Spawner;
+use embassy_sync::channel::signal::Signal;
 use embassy_time::{Duration, Timer};
-use embassy_util::channel::signal::Signal;
 use {defmt_rtt as _, panic_probe as _};
 
 static SIGNAL: Signal<u32> = Signal::new();
diff --git a/examples/stm32h7/src/bin/usart_split.rs b/examples/stm32h7/src/bin/usart_split.rs
index 64080ec45..55630dd39 100644
--- a/examples/stm32h7/src/bin/usart_split.rs
+++ b/examples/stm32h7/src/bin/usart_split.rs
@@ -7,8 +7,8 @@ use embassy_executor::Spawner;
 use embassy_stm32::dma::NoDma;
 use embassy_stm32::peripherals::{DMA1_CH1, UART7};
 use embassy_stm32::usart::{Config, Uart, UartRx};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use {defmt_rtt as _, panic_probe as _};
 
 #[embassy_executor::task]
diff --git a/examples/stm32l0/Cargo.toml b/examples/stm32l0/Cargo.toml
index 72365a640..11751a21d 100644
--- a/examples/stm32l0/Cargo.toml
+++ b/examples/stm32l0/Cargo.toml
@@ -8,7 +8,7 @@ default = ["nightly"]
 nightly = ["embassy-stm32/nightly", "embassy-lora", "lorawan-device", "lorawan", "embedded-io/async"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "stm32l072cz", "time-driver-any", "exti", "unstable-traits", "memory-x"]  }
diff --git a/examples/stm32l1/Cargo.toml b/examples/stm32l1/Cargo.toml
index 43f844b67..18b35b305 100644
--- a/examples/stm32l1/Cargo.toml
+++ b/examples/stm32l1/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32l1-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32l151cb-a", "time-driver-any", "memory-x"]  }
diff --git a/examples/stm32l4/Cargo.toml b/examples/stm32l4/Cargo.toml
index eaffa253e..cb7238e4c 100644
--- a/examples/stm32l4/Cargo.toml
+++ b/examples/stm32l4/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 [features]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-embedded-hal = { version = "0.1.0", path = "../../embassy-embedded-hal" }
diff --git a/examples/stm32l5/Cargo.toml b/examples/stm32l5/Cargo.toml
index d8e78088a..624c73c26 100644
--- a/examples/stm32l5/Cargo.toml
+++ b/examples/stm32l5/Cargo.toml
@@ -6,7 +6,7 @@ version = "0.1.0"
 [features]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32l552ze", "time-driver-any", "exti", "unstable-traits", "memory-x"]  }
diff --git a/examples/stm32l5/src/bin/usb_ethernet.rs b/examples/stm32l5/src/bin/usb_ethernet.rs
index 959195518..b21d8629f 100644
--- a/examples/stm32l5/src/bin/usb_ethernet.rs
+++ b/examples/stm32l5/src/bin/usb_ethernet.rs
@@ -15,10 +15,10 @@ use embassy_stm32::rng::Rng;
 use embassy_stm32::time::Hertz;
 use embassy_stm32::usb::Driver;
 use embassy_stm32::{interrupt, Config};
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::mpmc::Channel;
 use embassy_usb::{Builder, UsbDevice};
 use embassy_usb_ncm::{CdcNcmClass, Receiver, Sender, State};
-use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
-use embassy_util::channel::mpmc::Channel;
 use embedded_io::asynch::{Read, Write};
 use rand_core::RngCore;
 use static_cell::StaticCell;
diff --git a/examples/stm32u5/Cargo.toml b/examples/stm32u5/Cargo.toml
index 48833664a..ff0ec9f42 100644
--- a/examples/stm32u5/Cargo.toml
+++ b/examples/stm32u5/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32u5-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "stm32u585ai", "time-driver-any", "memory-x" ]  }
diff --git a/examples/stm32wb/Cargo.toml b/examples/stm32wb/Cargo.toml
index b46300764..3b10da0ad 100644
--- a/examples/stm32wb/Cargo.toml
+++ b/examples/stm32wb/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32wb-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32wb55cc", "time-driver-any", "exti"]  }
diff --git a/examples/stm32wl/Cargo.toml b/examples/stm32wl/Cargo.toml
index ae33478af..5f6679f4b 100644
--- a/examples/stm32wl/Cargo.toml
+++ b/examples/stm32wl/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-stm32wl-examples"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "subghz", "unstable-pac", "exti"]  }
diff --git a/examples/stm32wl/src/bin/subghz.rs b/examples/stm32wl/src/bin/subghz.rs
index d16e3f5e4..6d54e8503 100644
--- a/examples/stm32wl/src/bin/subghz.rs
+++ b/examples/stm32wl/src/bin/subghz.rs
@@ -13,7 +13,7 @@ use embassy_stm32::gpio::{Input, Level, Output, Pull, Speed};
 use embassy_stm32::interrupt;
 use embassy_stm32::interrupt::{Interrupt, InterruptExt};
 use embassy_stm32::subghz::*;
-use embassy_util::channel::signal::Signal;
+use embassy_sync::channel::signal::Signal;
 use {defmt_rtt as _, panic_probe as _};
 
 const PING_DATA: &str = "PING";
diff --git a/examples/wasm/Cargo.toml b/examples/wasm/Cargo.toml
index c7f980366..194e8f4b8 100644
--- a/examples/wasm/Cargo.toml
+++ b/examples/wasm/Cargo.toml
@@ -7,7 +7,7 @@ version = "0.1.0"
 crate-type = ["cdylib"]
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["log"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["log"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["log", "wasm", "nightly", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["log", "wasm", "nightly"] }
 
diff --git a/tests/rp/Cargo.toml b/tests/rp/Cargo.toml
index 8740cc488..4d6877ccd 100644
--- a/tests/rp/Cargo.toml
+++ b/tests/rp/Cargo.toml
@@ -4,7 +4,7 @@ name = "embassy-rp-tests"
 version = "0.1.0"
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt"] }
 embassy-rp = { version = "0.1.0", path = "../../embassy-rp", features = ["nightly", "defmt", "unstable-pac", "unstable-traits"]  }
diff --git a/tests/stm32/Cargo.toml b/tests/stm32/Cargo.toml
index 1d12995a2..f1441d00c 100644
--- a/tests/stm32/Cargo.toml
+++ b/tests/stm32/Cargo.toml
@@ -13,7 +13,7 @@ stm32wb55rg = ["embassy-stm32/stm32wb55rg"]     # Nucleo
 stm32u585ai = ["embassy-stm32/stm32u585ai"]     # IoT board
 
 [dependencies]
-embassy-util = { version = "0.1.0", path = "../../embassy-util", features = ["defmt"] }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = ["defmt"] }
 embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["defmt", "integrated-timers"] }
 embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "tick-32768hz"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "unstable-pac", "memory-x", "time-driver-tim2"]  }