diff --git a/examples/stm32f4/src/bin/blinky.rs b/examples/stm32f4/src/bin/blinky.rs
index 9e50c95c..9f86515e 100644
--- a/examples/stm32f4/src/bin/blinky.rs
+++ b/examples/stm32f4/src/bin/blinky.rs
@@ -8,32 +8,32 @@
 
 #[path = "../example_common.rs"]
 mod example_common;
+use defmt::panic;
+use embassy::executor::Spawner;
+use embassy::time::{Duration, Timer};
 use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::Peripherals;
 use embedded_hal::digital::v2::OutputPin;
 use example_common::*;
 
-use cortex_m_rt::entry;
-
-#[entry]
-fn main() -> ! {
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
     info!("Hello World!");
 
     unsafe {
         Dbgmcu::enable_all();
     }
 
-    let p = embassy_stm32::init(Default::default());
-
     let mut led = Output::new(p.PB7, Level::High, Speed::Low);
 
     loop {
         info!("high");
         led.set_high().unwrap();
-        cortex_m::asm::delay(10_000_000);
+        Timer::after(Duration::from_millis(300)).await;
 
         info!("low");
         led.set_low().unwrap();
-        cortex_m::asm::delay(10_000_000);
+        Timer::after(Duration::from_millis(300)).await;
     }
 }
diff --git a/examples/stm32f4/src/bin/button_exti.rs b/examples/stm32f4/src/bin/button_exti.rs
index bc48c2b1..d685b660 100644
--- a/examples/stm32f4/src/bin/button_exti.rs
+++ b/examples/stm32f4/src/bin/button_exti.rs
@@ -8,19 +8,22 @@
 
 #[path = "../example_common.rs"]
 mod example_common;
-use embassy::executor::Executor;
-use embassy::util::Forever;
+use defmt::panic;
+use embassy::executor::Spawner;
 use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::exti::ExtiInput;
 use embassy_stm32::gpio::{Input, Pull};
+use embassy_stm32::Peripherals;
 use embassy_traits::gpio::{WaitForFallingEdge, WaitForRisingEdge};
 use example_common::*;
 
-use cortex_m_rt::entry;
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
 
-#[embassy::task]
-async fn main_task() {
-    let p = embassy_stm32::init(Default::default());
+    unsafe {
+        Dbgmcu::enable_all();
+    }
 
     let button = Input::new(p.PC13, Pull::Down);
     let mut button = ExtiInput::new(button, p.EXTI13);
@@ -34,18 +37,3 @@ async fn main_task() {
         info!("Released!");
     }
 }
-
-static EXECUTOR: Forever<Executor> = Forever::new();
-
-#[entry]
-fn main() -> ! {
-    info!("Hello World!");
-
-    unsafe { Dbgmcu::enable_all() }
-
-    let executor = EXECUTOR.put(Executor::new());
-
-    executor.run(|spawner| {
-        unwrap!(spawner.spawn(main_task()));
-    })
-}
diff --git a/examples/stm32f4/src/bin/spi.rs b/examples/stm32f4/src/bin/spi.rs
index 60428387..6e2b703f 100644
--- a/examples/stm32f4/src/bin/spi.rs
+++ b/examples/stm32f4/src/bin/spi.rs
@@ -9,16 +9,15 @@
 #[path = "../example_common.rs"]
 mod example_common;
 
-use embassy_stm32::gpio::{Level, Output, Speed};
-use embedded_hal::digital::v2::OutputPin;
-use example_common::*;
-
 use cortex_m_rt::entry;
 use embassy_stm32::dbgmcu::Dbgmcu;
+use embassy_stm32::dma::NoDma;
+use embassy_stm32::gpio::{Level, Output, Speed};
 use embassy_stm32::spi::{Config, Spi};
 use embassy_stm32::time::Hertz;
 use embedded_hal::blocking::spi::Transfer;
-use embassy_stm32::dma::NoDma;
+use embedded_hal::digital::v2::OutputPin;
+use example_common::*;
 
 #[entry]
 fn main() -> ! {
diff --git a/examples/stm32f4/src/bin/spi_dma.rs b/examples/stm32f4/src/bin/spi_dma.rs
index 10a419fd..ccabbed9 100644
--- a/examples/stm32f4/src/bin/spi_dma.rs
+++ b/examples/stm32f4/src/bin/spi_dma.rs
@@ -9,21 +9,24 @@
 #[path = "../example_common.rs"]
 mod example_common;
 use core::fmt::Write;
-use cortex_m_rt::entry;
-use embassy::executor::Executor;
-use embassy::time::Clock;
-use embassy::util::Forever;
-use example_common::*;
-use embassy_traits::spi::FullDuplex;
-use heapless::String;
-use embassy_stm32::spi::{Spi, Config};
-use embassy_stm32::pac;
-use embassy_stm32::time::Hertz;
 use core::str::from_utf8;
+use defmt::panic;
+use embassy::executor::Spawner;
+use embassy_stm32::dbgmcu::Dbgmcu;
+use embassy_stm32::spi::{Config, Spi};
+use embassy_stm32::time::Hertz;
+use embassy_stm32::Peripherals;
+use embassy_traits::spi::FullDuplex;
+use example_common::*;
+use heapless::String;
 
-#[embassy::task]
-async fn main_task() {
-    let p = embassy_stm32::init(Default::default());
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    unsafe {
+        Dbgmcu::enable_all();
+    }
 
     let mut spi = Spi::new(
         p.SPI1,
@@ -38,48 +41,11 @@ async fn main_task() {
 
     for n in 0u32.. {
         let mut write: String<128> = String::new();
-        let mut read = [0;128];
+        let mut read = [0; 128];
         core::write!(&mut write, "Hello DMA World {}!\r\n", n).unwrap();
-        spi.read_write(&mut read[0..write.len()], write.as_bytes()).await.ok();
+        spi.read_write(&mut read[0..write.len()], write.as_bytes())
+            .await
+            .ok();
         info!("read via spi+dma: {}", from_utf8(&read).unwrap());
     }
 }
-
-struct ZeroClock;
-
-impl Clock for ZeroClock {
-    fn now(&self) -> u64 {
-        0
-    }
-}
-
-static EXECUTOR: Forever<Executor> = Forever::new();
-
-#[entry]
-fn main() -> ! {
-    info!("Hello World!");
-    unsafe {
-        pac::DBGMCU.cr().modify(|w| {
-            w.set_dbg_sleep(true);
-            w.set_dbg_standby(true);
-            w.set_dbg_stop(true);
-        });
-
-        pac::RCC.ahb1enr().modify(|w| {
-            w.set_gpioaen(true);
-            w.set_gpioben(true);
-            w.set_gpiocen(true);
-            w.set_gpioden(true);
-            w.set_gpioeen(true);
-            w.set_gpiofen(true);
-        });
-    }
-
-    unsafe { embassy::time::set_clock(&ZeroClock) };
-
-    let executor = EXECUTOR.put(Executor::new());
-
-    executor.run(|spawner| {
-        unwrap!(spawner.spawn(main_task()));
-    })
-}
diff --git a/examples/stm32f4/src/bin/usart.rs b/examples/stm32f4/src/bin/usart.rs
index 7cac33e9..8f0e04e5 100644
--- a/examples/stm32f4/src/bin/usart.rs
+++ b/examples/stm32f4/src/bin/usart.rs
@@ -8,18 +8,21 @@
 
 #[path = "../example_common.rs"]
 mod example_common;
-use cortex_m::prelude::_embedded_hal_blocking_serial_Write;
-use embassy::executor::Executor;
-use embassy::util::Forever;
+use cortex_m_rt::entry;
 use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::dma::NoDma;
 use embassy_stm32::usart::{Config, Uart};
+use embedded_hal::blocking::serial::Write;
 use example_common::*;
 
-use cortex_m_rt::entry;
+#[entry]
+fn main() -> ! {
+    info!("Hello World!");
+
+    unsafe {
+        Dbgmcu::enable_all();
+    }
 
-#[embassy::task]
-async fn main_task() {
     let p = embassy_stm32::init(Default::default());
 
     let config = Config::default();
@@ -34,20 +37,3 @@ async fn main_task() {
         usart.bwrite_all(&buf).unwrap();
     }
 }
-
-static EXECUTOR: Forever<Executor> = Forever::new();
-
-#[entry]
-fn main() -> ! {
-    info!("Hello World!");
-
-    unsafe {
-        Dbgmcu::enable_all();
-    }
-
-    let executor = EXECUTOR.put(Executor::new());
-
-    executor.run(|spawner| {
-        unwrap!(spawner.spawn(main_task()));
-    })
-}
diff --git a/examples/stm32f4/src/bin/usart_dma.rs b/examples/stm32f4/src/bin/usart_dma.rs
index 552f8367..3b86f78c 100644
--- a/examples/stm32f4/src/bin/usart_dma.rs
+++ b/examples/stm32f4/src/bin/usart_dma.rs
@@ -9,19 +9,23 @@
 #[path = "../example_common.rs"]
 mod example_common;
 use core::fmt::Write;
-use cortex_m_rt::entry;
-use embassy::executor::Executor;
-use embassy::util::Forever;
+use defmt::panic;
+use embassy::executor::Spawner;
 use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::dma::NoDma;
 use embassy_stm32::usart::{Config, Uart};
+use embassy_stm32::Peripherals;
 use embassy_traits::uart::Write as _;
 use example_common::*;
 use heapless::String;
 
-#[embassy::task]
-async fn main_task() {
-    let p = embassy_stm32::init(Default::default());
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    unsafe {
+        Dbgmcu::enable_all();
+    }
 
     let config = Config::default();
     let mut usart = Uart::new(p.USART3, p.PD9, p.PD8, p.DMA1_CH3, NoDma, config);
@@ -34,20 +38,3 @@ async fn main_task() {
         info!("wrote DMA");
     }
 }
-
-static EXECUTOR: Forever<Executor> = Forever::new();
-
-#[entry]
-fn main() -> ! {
-    info!("Hello World!");
-
-    unsafe {
-        Dbgmcu::enable_all();
-    }
-
-    let executor = EXECUTOR.put(Executor::new());
-
-    executor.run(|spawner| {
-        unwrap!(spawner.spawn(main_task()));
-    })
-}