diff --git a/examples/stm32f4/src/bin/blinky.rs b/examples/stm32f4/src/bin/blinky.rs
index 0e411d78..da512dce 100644
--- a/examples/stm32f4/src/bin/blinky.rs
+++ b/examples/stm32f4/src/bin/blinky.rs
@@ -25,15 +25,6 @@ fn main() -> ! {
             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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32f4/src/bin/button.rs b/examples/stm32f4/src/bin/button.rs
index 901fce41..395ec484 100644
--- a/examples/stm32f4/src/bin/button.rs
+++ b/examples/stm32f4/src/bin/button.rs
@@ -24,15 +24,6 @@ fn main() -> ! {
             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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32f4/src/bin/button_exti.rs b/examples/stm32f4/src/bin/button_exti.rs
index 63c273b1..bccd3870 100644
--- a/examples/stm32f4/src/bin/button_exti.rs
+++ b/examples/stm32f4/src/bin/button_exti.rs
@@ -48,15 +48,6 @@ fn main() -> ! {
             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);
-        });
-
         // EXTI clock
         pac::RCC.apb2enr().modify(|w| {
             w.set_syscfgen(true);
diff --git a/examples/stm32f4/src/bin/spi.rs b/examples/stm32f4/src/bin/spi.rs
index f8c9997e..40b0748d 100644
--- a/examples/stm32f4/src/bin/spi.rs
+++ b/examples/stm32f4/src/bin/spi.rs
@@ -14,11 +14,11 @@ use embedded_hal::digital::v2::OutputPin;
 use example_common::*;
 
 use cortex_m_rt::entry;
+use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::pac;
 use embassy_stm32::spi::{Config, Spi};
 use embassy_stm32::time::Hertz;
 use embedded_hal::blocking::spi::Transfer;
-use embassy_stm32::dbgmcu::Dbgmcu;
 
 #[entry]
 fn main() -> ! {
@@ -26,15 +26,6 @@ fn main() -> ! {
 
     unsafe {
         Dbgmcu::enable_all();
-
-        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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32f4/src/bin/usart.rs b/examples/stm32f4/src/bin/usart.rs
index dbe17c91..51a2e0fd 100644
--- a/examples/stm32f4/src/bin/usart.rs
+++ b/examples/stm32f4/src/bin/usart.rs
@@ -47,15 +47,6 @@ fn main() -> ! {
             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);
-        });
     }
 
     let executor = EXECUTOR.put(Executor::new());
diff --git a/examples/stm32h7/src/bin/blinky.rs b/examples/stm32h7/src/bin/blinky.rs
index c41cc789..54e139e7 100644
--- a/examples/stm32h7/src/bin/blinky.rs
+++ b/examples/stm32h7/src/bin/blinky.rs
@@ -28,8 +28,7 @@ fn main() -> ! {
 
     let rcc = pp.RCC.constrain();
 
-    rcc
-        .sys_ck(96.mhz())
+    rcc.sys_ck(96.mhz())
         .pclk1(48.mhz())
         .pclk2(48.mhz())
         .pclk3(48.mhz())
@@ -47,16 +46,6 @@ fn main() -> ! {
         w
     });
 
-    pp.RCC.ahb4enr.modify(|_, w| {
-        w.gpioaen().set_bit();
-        w.gpioben().set_bit();
-        w.gpiocen().set_bit();
-        w.gpioden().set_bit();
-        w.gpioeen().set_bit();
-        w.gpiofen().set_bit();
-        w
-    });
-
     let p = embassy_stm32::init(Default::default());
 
     let mut led = Output::new(p.PB14, Level::High, Speed::Low);
diff --git a/examples/stm32h7/src/bin/dac.rs b/examples/stm32h7/src/bin/dac.rs
index 12195675..330f69aa 100644
--- a/examples/stm32h7/src/bin/dac.rs
+++ b/examples/stm32h7/src/bin/dac.rs
@@ -13,9 +13,9 @@ use embassy_stm32::gpio::NoPin;
 use example_common::*;
 
 use cortex_m_rt::entry;
+use embassy_stm32::dac::{Channel, Dac, Value};
 use stm32h7::stm32h743 as pac;
 use stm32h7xx_hal::prelude::*;
-use embassy_stm32::dac::{Dac, Value, Channel};
 
 #[entry]
 fn main() -> ! {
@@ -23,13 +23,11 @@ fn main() -> ! {
 
     let pp = pac::Peripherals::take().unwrap();
 
-    let pwrcfg = pp.PWR.constrain()
-        .freeze();
+    let pwrcfg = pp.PWR.constrain().freeze();
 
     let rcc = pp.RCC.constrain();
 
-    rcc
-        .sys_ck(96.mhz())
+    rcc.sys_ck(96.mhz())
         .pclk1(48.mhz())
         .pclk2(48.mhz())
         .pclk3(48.mhz())
@@ -47,21 +45,11 @@ fn main() -> ! {
         w
     });
 
-    pp.RCC.apb1lenr.modify(|_, w|{
+    pp.RCC.apb1lenr.modify(|_, w| {
         w.dac12en().set_bit();
         w
     });
 
-    pp.RCC.ahb4enr.modify(|_, w| {
-        w.gpioaen().set_bit();
-        w.gpioben().set_bit();
-        w.gpiocen().set_bit();
-        w.gpioden().set_bit();
-        w.gpioeen().set_bit();
-        w.gpiofen().set_bit();
-        w
-    });
-
     let p = embassy_stm32::init(Default::default());
 
     let mut dac = Dac::new(p.DAC1, p.PA4, NoPin);
@@ -79,11 +67,11 @@ use micromath::F32Ext;
 fn to_sine_wave(v: u8) -> u8 {
     if v >= 128 {
         // top half
-        let r = 3.14 * ( (v-128) as f32/ 128.0) ;
+        let r = 3.14 * ((v - 128) as f32 / 128.0);
         (r.sin() * 128.0 + 127.0) as u8
     } else {
         // bottom half
-        let r = 3.14 + 3.14 * (v as f32/ 128.0);
+        let r = 3.14 + 3.14 * (v as f32 / 128.0);
         (r.sin() * 128.0 + 127.0) as u8
     }
 }
diff --git a/examples/stm32h7/src/bin/eth.rs b/examples/stm32h7/src/bin/eth.rs
index 7dc02a75..7ae80d6e 100644
--- a/examples/stm32h7/src/bin/eth.rs
+++ b/examples/stm32h7/src/bin/eth.rs
@@ -106,8 +106,6 @@ static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
 
 #[entry]
 fn main() -> ! {
-    use stm32_metapac::RCC;
-
     info!("Hello World!");
 
     info!("Setup RCC...");
@@ -123,16 +121,6 @@ fn main() -> ! {
     let mut rcc = Rcc::new(&mut p.RCC, RccConfig::default());
     rcc.enable_debug_wfe(&mut p.DBGMCU, true);
 
-    unsafe {
-        RCC.ahb4enr().modify(|w| {
-            w.set_gpioaen(true);
-            w.set_gpioben(true);
-            w.set_gpiocen(true);
-            w.set_gpioden(true);
-            w.set_gpioien(true);
-        });
-    }
-
     let rtc_int = interrupt_take!(TIM2);
     let rtc = TIMER_RTC.put(Clock::new(p.TIM2, rtc_int));
     rtc.start();
diff --git a/examples/stm32h7/src/bin/usart.rs b/examples/stm32h7/src/bin/usart.rs
index 143f9449..11e04f33 100644
--- a/examples/stm32h7/src/bin/usart.rs
+++ b/examples/stm32h7/src/bin/usart.rs
@@ -77,16 +77,6 @@ fn main() -> ! {
         w
     });
 
-    pp.RCC.ahb4enr.modify(|_, w| {
-        w.gpioaen().set_bit();
-        w.gpioben().set_bit();
-        w.gpiocen().set_bit();
-        w.gpioden().set_bit();
-        w.gpioeen().set_bit();
-        w.gpiofen().set_bit();
-        w
-    });
-
     unsafe { embassy::time::set_clock(&ZeroClock) };
 
     let executor = EXECUTOR.put(Executor::new());
diff --git a/examples/stm32h7/src/bin/usart_dma.rs b/examples/stm32h7/src/bin/usart_dma.rs
index 90735650..fe59a216 100644
--- a/examples/stm32h7/src/bin/usart_dma.rs
+++ b/examples/stm32h7/src/bin/usart_dma.rs
@@ -12,18 +12,18 @@ use core::fmt::Write;
 use embassy::executor::Executor;
 use embassy::time::Clock;
 use embassy::util::Forever;
+use embassy_stm32::dbgmcu::Dbgmcu;
 use embassy_stm32::dma::NoDma;
 use embassy_stm32::usart::{Config, Uart};
-use embassy_stm32::dbgmcu::Dbgmcu;
-use example_common::*;
 use embassy_traits::uart::Write as _Write;
+use example_common::*;
 
 use hal::prelude::*;
 use stm32h7xx_hal as hal;
 
 use cortex_m_rt::entry;
-use stm32h7::stm32h743 as pac;
 use heapless::String;
+use stm32h7::stm32h743 as pac;
 
 #[embassy::task]
 async fn main_task() {
@@ -40,7 +40,6 @@ async fn main_task() {
 
         info!("wrote DMA");
     }
-
 }
 
 struct ZeroClock;
diff --git a/examples/stm32l4/Cargo.toml b/examples/stm32l4/Cargo.toml
index 069c1434..41c189c6 100644
--- a/examples/stm32l4/Cargo.toml
+++ b/examples/stm32l4/Cargo.toml
@@ -21,7 +21,6 @@ embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "def
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "unstable-pac", "stm32l4s5vi"]  }
 embassy-extras = {version = "0.1.0", path = "../../embassy-extras" }
-stm32l4 = { version = "0.13", features = ["stm32l4x5" ] }
 stm32l4xx-hal = { version = "0.6.0", features = ["stm32l4x5"] }
 
 defmt = "0.2.0"
diff --git a/examples/stm32l4/src/bin/adc.rs b/examples/stm32l4/src/bin/adc.rs
index a3c44d3c..6894d664 100644
--- a/examples/stm32l4/src/bin/adc.rs
+++ b/examples/stm32l4/src/bin/adc.rs
@@ -11,11 +11,10 @@ mod example_common;
 
 use example_common::*;
 
-use cortex_m_rt::entry;
-//use stm32f4::stm32f429 as pac;
 use cortex_m::delay::Delay;
+use cortex_m_rt::entry;
 use embassy_stm32::adc::{Adc, Resolution};
-use stm32l4::stm32l4x5 as pac;
+use embassy_stm32::pac;
 use stm32l4xx_hal::prelude::*;
 use stm32l4xx_hal::rcc::PllSource;
 
@@ -40,31 +39,16 @@ fn main() -> ! {
         .pll_source(PllSource::HSI16)
         .freeze(&mut flash.acr, &mut pwr);
 
-    let pp = unsafe { pac::Peripherals::steal() };
-
-    pp.RCC.ccipr.modify(|_, w| {
-        unsafe {
-            w.adcsel().bits(0b11);
-        }
-        w
-    });
-
-    pp.DBGMCU.cr.modify(|_, w| {
-        w.dbg_sleep().set_bit();
-        w.dbg_standby().set_bit();
-        w.dbg_stop().set_bit()
-    });
-
-    pp.RCC.ahb2enr.modify(|_, w| {
-        w.adcen().set_bit();
-        w.gpioaen().set_bit();
-        w.gpioben().set_bit();
-        w.gpiocen().set_bit();
-        w.gpioden().set_bit();
-        w.gpioeen().set_bit();
-        w.gpiofen().set_bit();
-        w
-    });
+    unsafe {
+        pac::RCC.ccipr().modify(|w| {
+            w.set_adcsel(0b11);
+        });
+        pac::DBGMCU.cr().modify(|w| {
+            w.set_dbg_sleep(true);
+            w.set_dbg_standby(true);
+            w.set_dbg_stop(true);
+        });
+    }
 
     let p = embassy_stm32::init(Default::default());
 
diff --git a/examples/stm32l4/src/bin/blinky.rs b/examples/stm32l4/src/bin/blinky.rs
index 0af16867..ba271b9e 100644
--- a/examples/stm32l4/src/bin/blinky.rs
+++ b/examples/stm32l4/src/bin/blinky.rs
@@ -24,15 +24,6 @@ fn main() -> ! {
             w.set_dbg_standby(true);
             w.set_dbg_stop(true);
         });
-
-        pac::RCC.ahb2enr().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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32l4/src/bin/button.rs b/examples/stm32l4/src/bin/button.rs
index c7246360..9d2fc2f2 100644
--- a/examples/stm32l4/src/bin/button.rs
+++ b/examples/stm32l4/src/bin/button.rs
@@ -28,15 +28,6 @@ fn main() -> ! {
         pac::RCC.apb2enr().modify(|w| {
             w.set_syscfgen(true);
         });
-
-        pac::RCC.ahb2enr().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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32l4/src/bin/button_exti.rs b/examples/stm32l4/src/bin/button_exti.rs
index 6a06e437..83537d92 100644
--- a/examples/stm32l4/src/bin/button_exti.rs
+++ b/examples/stm32l4/src/bin/button_exti.rs
@@ -59,15 +59,6 @@ fn main() -> ! {
         pac::RCC.apb2enr().modify(|w| {
             w.set_syscfgen(true);
         });
-
-        pac::RCC.ahb2enr().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) };
diff --git a/examples/stm32l4/src/bin/dac.rs b/examples/stm32l4/src/bin/dac.rs
index 5317ac35..1f7f8d46 100644
--- a/examples/stm32l4/src/bin/dac.rs
+++ b/examples/stm32l4/src/bin/dac.rs
@@ -13,11 +13,10 @@ use embassy_stm32::gpio::NoPin;
 use example_common::*;
 
 use cortex_m_rt::entry;
-//use stm32f4::stm32f429 as pac;
 use embassy_stm32::dac::{Channel, Dac, Value};
-use stm32l4::stm32l4x5 as pac;
+use embassy_stm32::pac;
+use stm32l4xx_hal::prelude::*;
 use stm32l4xx_hal::rcc::PllSource;
-use stm32l4xx_hal::{prelude::*};
 
 #[entry]
 fn main() -> ! {
@@ -30,36 +29,23 @@ fn main() -> ! {
 
     // TRY the other clock configuration
     // let clocks = rcc.cfgr.freeze(&mut flash.acr);
-    rcc
-        .cfgr
+    rcc.cfgr
         .sysclk(80.mhz())
         .pclk1(80.mhz())
         .pclk2(80.mhz())
         .pll_source(PllSource::HSI16)
         .freeze(&mut flash.acr, &mut pwr);
 
-    let pp = unsafe { pac::Peripherals::steal() };
-
-    pp.DBGMCU.cr.modify(|_, w| {
-        w.dbg_sleep().set_bit();
-        w.dbg_standby().set_bit();
-        w.dbg_stop().set_bit()
-    });
-
-    pp.RCC.apb1enr1.modify(|_, w| {
-        w.dac1en().set_bit();
-        w
-    });
-
-    pp.RCC.ahb2enr.modify(|_, w| {
-        w.gpioaen().set_bit();
-        w.gpioben().set_bit();
-        w.gpiocen().set_bit();
-        w.gpioden().set_bit();
-        w.gpioeen().set_bit();
-        w.gpiofen().set_bit();
-        w
-    });
+    unsafe {
+        pac::DBGMCU.cr().modify(|w| {
+            w.set_dbg_sleep(true);
+            w.set_dbg_standby(true);
+            w.set_dbg_stop(true);
+        });
+        pac::RCC.apb1enr1().modify(|w| {
+            w.set_dac1en(true);
+        });
+    }
 
     let p = embassy_stm32::init(Default::default());
 
diff --git a/examples/stm32l4/src/bin/spi.rs b/examples/stm32l4/src/bin/spi.rs
index 7cac01fd..8702fe0c 100644
--- a/examples/stm32l4/src/bin/spi.rs
+++ b/examples/stm32l4/src/bin/spi.rs
@@ -32,15 +32,6 @@ fn main() -> ! {
         pac::RCC.apb2enr().modify(|w| {
             w.set_syscfgen(true);
         });
-
-        pac::RCC.ahb2enr().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);
-        });
     }
 
     let p = embassy_stm32::init(Default::default());
diff --git a/examples/stm32l4/src/bin/usart.rs b/examples/stm32l4/src/bin/usart.rs
index f572b1ef..1c2a861e 100644
--- a/examples/stm32l4/src/bin/usart.rs
+++ b/examples/stm32l4/src/bin/usart.rs
@@ -60,15 +60,6 @@ fn main() -> ! {
             w.set_dma1en(true);
         });
 
-        pac::RCC.ahb2enr().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);
-        });
-
         pac::RCC.apb1enr1().modify(|w| {
             w.set_uart4en(true);
         });
diff --git a/examples/stm32l4/src/bin/usart_dma.rs b/examples/stm32l4/src/bin/usart_dma.rs
index e325e3da..b51699ac 100644
--- a/examples/stm32l4/src/bin/usart_dma.rs
+++ b/examples/stm32l4/src/bin/usart_dma.rs
@@ -67,15 +67,6 @@ fn main() -> ! {
             w.set_dma1en(true);
             w.set_dma2en(true);
         });
-
-        pac::RCC.ahb2enr().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) };
diff --git a/examples/stm32wb55/Cargo.toml b/examples/stm32wb55/Cargo.toml
index d3d128e8..92813ccd 100644
--- a/examples/stm32wb55/Cargo.toml
+++ b/examples/stm32wb55/Cargo.toml
@@ -21,7 +21,6 @@ embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "def
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
 embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "stm32wb55cc"]  }
 embassy-extras = {version = "0.1.0", path = "../../embassy-extras" }
-stm32wb-pac = "0.2"
 
 defmt = "0.2.0"
 defmt-rtt = "0.2.0"
diff --git a/examples/stm32wb55/src/bin/blinky.rs b/examples/stm32wb55/src/bin/blinky.rs
index d53ad611..ae11c986 100644
--- a/examples/stm32wb55/src/bin/blinky.rs
+++ b/examples/stm32wb55/src/bin/blinky.rs
@@ -13,19 +13,11 @@ use embedded_hal::digital::v2::OutputPin;
 use example_common::*;
 
 use cortex_m_rt::entry;
-use stm32wb_pac as pac;
 
 #[entry]
 fn main() -> ! {
     info!("Hello World!");
 
-    let pp = pac::Peripherals::take().unwrap();
-
-    pp.RCC.ahb2enr.modify(|_, w| {
-        w.gpioben().set_bit();
-        w
-    });
-
     let p = embassy_stm32::init(Default::default());
 
     let mut led = Output::new(p.PB0, Level::High, Speed::Low);