Merge branch 'main' into i2c

18 files changed, 584 insertions, 20 deletions

diff --git a/examples/rp/src/bin/pio_onewire.rs b/examples/rp/src/bin/pio_onewire.rs
index 102f13c45..6432edb8a 100644
--- a/examples/rp/src/bin/pio_onewire.rs
+++ b/examples/rp/src/bin/pio_onewire.rs
@@ -61,7 +61,7 @@ async fn main(_spawner: Spawner) {
             let mut data = [0; 9];
             onewire.read_bytes(&mut data).await;
             if crc8(&data) == 0 {
-                let temp = ((data[1] as u32) << 8 | data[0] as u32) as f32 / 16.;
+                let temp = ((data[1] as i16) << 8 | data[0] as i16) as f32 / 16.;
                 info!("Read device {:x}: {} deg C", device, temp);
             } else {
                 warn!("Reading device {:x} failed", device);
diff --git a/examples/rp/src/bin/pio_onewire_parasite.rs b/examples/rp/src/bin/pio_onewire_parasite.rs
index fd076dee0..78fb94b18 100644
--- a/examples/rp/src/bin/pio_onewire_parasite.rs
+++ b/examples/rp/src/bin/pio_onewire_parasite.rs
@@ -63,7 +63,7 @@ async fn main(_spawner: Spawner) {
             let mut data = [0; 9];
             onewire.read_bytes(&mut data).await;
             if crc8(&data) == 0 {
-                let temp = ((data[1] as u32) << 8 | data[0] as u32) as f32 / 16.;
+                let temp = ((data[1] as i16) << 8 | data[0] as i16) as f32 / 16.;
                 info!("Read device {:x}: {} deg C", device, temp);
             } else {
                 warn!("Reading device {:x} failed. {:02x}", device, data);
diff --git a/examples/rp235x/src/bin/pio_onewire.rs b/examples/rp235x/src/bin/pio_onewire.rs
index 102f13c45..6432edb8a 100644
--- a/examples/rp235x/src/bin/pio_onewire.rs
+++ b/examples/rp235x/src/bin/pio_onewire.rs
@@ -61,7 +61,7 @@ async fn main(_spawner: Spawner) {
             let mut data = [0; 9];
             onewire.read_bytes(&mut data).await;
             if crc8(&data) == 0 {
-                let temp = ((data[1] as u32) << 8 | data[0] as u32) as f32 / 16.;
+                let temp = ((data[1] as i16) << 8 | data[0] as i16) as f32 / 16.;
                 info!("Read device {:x}: {} deg C", device, temp);
             } else {
                 warn!("Reading device {:x} failed", device);
diff --git a/examples/rp235x/src/bin/pio_onewire_parasite.rs b/examples/rp235x/src/bin/pio_onewire_parasite.rs
index fd076dee0..78fb94b18 100644
--- a/examples/rp235x/src/bin/pio_onewire_parasite.rs
+++ b/examples/rp235x/src/bin/pio_onewire_parasite.rs
@@ -63,7 +63,7 @@ async fn main(_spawner: Spawner) {
             let mut data = [0; 9];
             onewire.read_bytes(&mut data).await;
             if crc8(&data) == 0 {
-                let temp = ((data[1] as u32) << 8 | data[0] as u32) as f32 / 16.;
+                let temp = ((data[1] as i16) << 8 | data[0] as i16) as f32 / 16.;
                 info!("Read device {:x}: {} deg C", device, temp);
             } else {
                 warn!("Reading device {:x} failed. {:02x}", device, data);
diff --git a/examples/stm32f4/src/bin/adc_dma.rs b/examples/stm32f4/src/bin/adc_dma.rs
index c24f01753..f8da91336 100644
--- a/examples/stm32f4/src/bin/adc_dma.rs
+++ b/examples/stm32f4/src/bin/adc_dma.rs
@@ -4,7 +4,7 @@ use cortex_m::singleton;
 use defmt::*;
 use embassy_executor::Spawner;
 use embassy_stm32::Peripherals;
-use embassy_stm32::adc::{Adc, RingBufferedAdc, SampleTime, Sequence};
+use embassy_stm32::adc::{Adc, AdcChannel, RingBufferedAdc, SampleTime};
 use embassy_time::Instant;
 use {defmt_rtt as _, panic_probe as _};
 
@@ -15,7 +15,7 @@ async fn main(spawner: Spawner) {
 }
 
 #[embassy_executor::task]
-async fn adc_task(mut p: Peripherals) {
+async fn adc_task(p: Peripherals) {
     const ADC_BUF_SIZE: usize = 1024;
     let adc_data: &mut [u16; ADC_BUF_SIZE] = singleton!(ADCDAT : [u16; ADC_BUF_SIZE] = [0u16; ADC_BUF_SIZE]).unwrap();
     let adc_data2: &mut [u16; ADC_BUF_SIZE] = singleton!(ADCDAT2 : [u16; ADC_BUF_SIZE] = [0u16; ADC_BUF_SIZE]).unwrap();
@@ -23,13 +23,24 @@ async fn adc_task(mut p: Peripherals) {
     let adc = Adc::new(p.ADC1);
     let adc2 = Adc::new(p.ADC2);
 
-    let mut adc: RingBufferedAdc<embassy_stm32::peripherals::ADC1> = adc.into_ring_buffered(p.DMA2_CH0, adc_data);
-    let mut adc2: RingBufferedAdc<embassy_stm32::peripherals::ADC2> = adc2.into_ring_buffered(p.DMA2_CH2, adc_data2);
-
-    adc.set_sample_sequence(Sequence::One, &mut p.PA0, SampleTime::CYCLES112);
-    adc.set_sample_sequence(Sequence::Two, &mut p.PA2, SampleTime::CYCLES112);
-    adc2.set_sample_sequence(Sequence::One, &mut p.PA1, SampleTime::CYCLES112);
-    adc2.set_sample_sequence(Sequence::Two, &mut p.PA3, SampleTime::CYCLES112);
+    let mut adc: RingBufferedAdc<embassy_stm32::peripherals::ADC1> = adc.into_ring_buffered(
+        p.DMA2_CH0,
+        adc_data,
+        [
+            (&mut p.PA0.degrade_adc(), SampleTime::CYCLES112),
+            (&mut p.PA2.degrade_adc(), SampleTime::CYCLES112),
+        ]
+        .into_iter(),
+    );
+    let mut adc2: RingBufferedAdc<embassy_stm32::peripherals::ADC2> = adc2.into_ring_buffered(
+        p.DMA2_CH2,
+        adc_data2,
+        [
+            (&mut p.PA1.degrade_adc(), SampleTime::CYCLES112),
+            (&mut p.PA3.degrade_adc(), SampleTime::CYCLES112),
+        ]
+        .into_iter(),
+    );
 
     // Note that overrun is a big consideration in this implementation. Whatever task is running the adc.read() calls absolutely must circle back around
     // to the adc.read() call before the DMA buffer is wrapped around > 1 time. At this point, the overrun is so significant that the context of
diff --git a/examples/stm32g0/src/bin/onewire_ds18b20.rs b/examples/stm32g0/src/bin/onewire_ds18b20.rs
index 62f8711a6..43ecca8c4 100644
--- a/examples/stm32g0/src/bin/onewire_ds18b20.rs
+++ b/examples/stm32g0/src/bin/onewire_ds18b20.rs
@@ -267,7 +267,7 @@ where
         }
 
         match Self::crc8(&data) == 0 {
-            true => Ok(((data[1] as u16) << 8 | data[0] as u16) as f32 / 16.),
+            true => Ok(((data[1] as i16) << 8 | data[0] as i16) as f32 / 16.),
             false => Err(()),
         }
     }
diff --git a/examples/stm32h5/src/bin/stop.rs b/examples/stm32h5/src/bin/stop.rs
index 3c4f49f64..2026d8f99 100644
--- a/examples/stm32h5/src/bin/stop.rs
+++ b/examples/stm32h5/src/bin/stop.rs
@@ -12,7 +12,6 @@ use embassy_stm32::rcc::{HSIPrescaler, LsConfig};
 use embassy_stm32::rtc::{Rtc, RtcConfig};
 use embassy_stm32::{Config, Peri};
 use embassy_time::Timer;
-use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
 #[cortex_m_rt::entry]
@@ -39,8 +38,6 @@ async fn async_main(spawner: Spawner) {
 
     // give the RTC to the executor...
     let rtc = Rtc::new(p.RTC, RtcConfig::default());
-    static RTC: StaticCell<Rtc> = StaticCell::new();
-    let rtc = RTC.init(rtc);
     embassy_stm32::low_power::stop_with_rtc(rtc);
 
     spawner.spawn(unwrap!(blinky(p.PB4.into())));
diff --git a/examples/stm32l4/src/bin/adc_dma.rs b/examples/stm32l4/src/bin/adc_dma.rs
new file mode 100644
index 000000000..7a9200edd
--- /dev/null
+++ b/examples/stm32l4/src/bin/adc_dma.rs
@@ -0,0 +1,51 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_stm32::Config;
+use embassy_stm32::adc::{Adc, AdcChannel, SampleTime};
+use {defmt_rtt as _, panic_probe as _};
+
+const DMA_BUF_LEN: usize = 512;
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    info!("Hello World!");
+
+    let mut config = Config::default();
+    {
+        use embassy_stm32::rcc::*;
+        config.rcc.mux.adcsel = mux::Adcsel::SYS;
+    }
+    let p = embassy_stm32::init(config);
+
+    let mut adc = Adc::new(p.ADC1);
+    let mut adc_pin0 = p.PA0.degrade_adc();
+    let mut adc_pin1 = p.PA1.degrade_adc();
+    let mut adc_dma_buf = [0u16; DMA_BUF_LEN];
+    let mut measurements = [0u16; DMA_BUF_LEN / 2];
+    let mut ring_buffered_adc = adc.into_ring_buffered(
+        p.DMA1_CH1,
+        &mut adc_dma_buf,
+        [
+            (&mut adc_pin0, SampleTime::CYCLES640_5),
+            (&mut adc_pin1, SampleTime::CYCLES640_5),
+        ]
+        .into_iter(),
+    );
+
+    info!("starting measurement loop");
+    loop {
+        match ring_buffered_adc.read(&mut measurements).await {
+            Ok(_) => {
+                //note: originally there was a print here showing all the samples,
+                //but even that takes too much time and would cause adc overruns
+                info!("adc1 first 10 samples: {}", measurements[0..10]);
+            }
+            Err(e) => {
+                warn!("Error: {:?}", e);
+            }
+        }
+    }
+}
diff --git a/examples/stm32l5/src/bin/stop.rs b/examples/stm32l5/src/bin/stop.rs
index c34053190..7662dbfa8 100644
--- a/examples/stm32l5/src/bin/stop.rs
+++ b/examples/stm32l5/src/bin/stop.rs
@@ -9,7 +9,6 @@ use embassy_stm32::rcc::LsConfig;
 use embassy_stm32::rtc::{Rtc, RtcConfig};
 use embassy_stm32::{Config, Peri};
 use embassy_time::Timer;
-use static_cell::StaticCell;
 use {defmt_rtt as _, panic_probe as _};
 
 #[cortex_m_rt::entry]
@@ -30,8 +29,6 @@ async fn async_main(spawner: Spawner) {
 
     // give the RTC to the executor...
     let rtc = Rtc::new(p.RTC, RtcConfig::default());
-    static RTC: StaticCell<Rtc> = StaticCell::new();
-    let rtc = RTC.init(rtc);
     embassy_stm32::low_power::stop_with_rtc(rtc);
 
     spawner.spawn(unwrap!(blinky(p.PC7.into())));
diff --git a/examples/stm32wle5/.cargo/config.toml b/examples/stm32wle5/.cargo/config.toml
new file mode 100644
index 000000000..0178d377c
--- /dev/null
+++ b/examples/stm32wle5/.cargo/config.toml
@@ -0,0 +1,9 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# replace your chip as listed in `probe-rs chip list`
+runner = "probe-rs run --chip STM32WLE5JCIx --connect-under-reset"
+
+[build]
+target = "thumbv7em-none-eabi"
+
+[env]
+DEFMT_LOG = "info"
diff --git a/examples/stm32wle5/Cargo.toml b/examples/stm32wle5/Cargo.toml
new file mode 100644
index 000000000..f2fc4dd3d
--- /dev/null
+++ b/examples/stm32wle5/Cargo.toml
@@ -0,0 +1,38 @@
+[package]
+edition = "2024"
+name = "embassy-stm32wl-examples"
+version = "0.1.0"
+license = "MIT OR Apache-2.0"
+publish = false
+
+[dependencies]
+# Change stm32wl55jc-cm4 to your chip name, if necessary.
+embassy-stm32 = { version = "0.4.0", path = "../../embassy-stm32", features = ["defmt", "stm32wle5jc", "time-driver-any", "memory-x", "unstable-pac", "exti", "low-power"] }
+embassy-sync = { version = "0.7.2", path = "../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.9.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt"] }
+embassy-time = { version = "0.5.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-1_000"] }
+embassy-embedded-hal = { version = "0.5.0", path = "../../embassy-embedded-hal" }
+
+defmt = "1.0.1"
+defmt-rtt = { version = "1.1.0", optional = true }
+defmt-serial = { version = "0.10.0", optional = true }
+
+cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
+cortex-m-rt = "0.7.0"
+embedded-hal = "1.0.0"
+embedded-storage = "0.3.1"
+panic-probe = { version = "1.0.0", features = ["print-defmt"] }
+static_cell = { version = "2.1.1", default-features = false }
+
+[profile.release]
+debug = 2
+
+[package.metadata.embassy]
+build = [
+  { target = "thumbv7em-none-eabi", artifact-dir = "out/examples/stm32wl" }
+]
+
+[features]
+default = ["defmt-serial"]
+defmt-rtt = ["dep:defmt-rtt"]
+defmt-serial = ["dep:defmt-serial"]
diff --git a/examples/stm32wle5/README.md b/examples/stm32wle5/README.md
new file mode 100644
index 000000000..18c3b5071
--- /dev/null
+++ b/examples/stm32wle5/README.md
@@ -0,0 +1,52 @@
+# Low Power Examples for STM32WLEx family
+
+Examples in this repo should work with [LoRa-E5 Dev Board](https://www.st.com/en/partner-products-and-services/lora-e5-development-kit.html) board.
+
+## Prerequsits
+
+- Connect a usb serial adapter to LPUart1 (this is where ALL logging will go)
+- Optional: Connect an amp meter that ran measure down to 0.1uA to the power test pins
+- `cargo install defmt-print` so you can print log messahes from LPUart1
+
+## Example Notes
+
+All examples will set all pins to analog mode before configuring pins for the example, if any. This saves about 500uA!!!!
+
+- the `adc` example will sleep in STOP1 betwen samples and the chip will only draw about 13uA while sleeping
+- the `blinky` example will sleep in STOP2 and the chip will only draw 1uA or less while sleeping
+- the `button_exti` example will sleep in STOP2 and the chip will only draw 1uA or less while sleeping
+- the `i2c` examples will sleep in STOP1 between reads and the chip only draw about 10uA while sleeping
+
+For each example you will need to start `defmt-print` with the example binary and the correct serial port in a seperate terminal.  Example:
+```
+defmt-print -w -v -e target/thumbv7em-none-eabi/debug/<module-name> serial --path /dev/cu.usbserial-00000000 --baud 115200
+```
+
+Run individual examples with
+```
+cargo flash --chip STM32WLE5JCIx --connect-under-reset --bin <module-name>
+```
+for example
+```
+cargo flash --chip STM32WLE5JCIx --connect-under-reset --bin blinky
+```
+
+You can also run them with with `run`.  However in this case expect probe-rs to be disconnected as soon as flashing is done as all IO pins are set to analog input!
+```
+cargo run --bin blinky
+```
+
+## Checklist before running examples
+You might need to adjust `.cargo/config.toml`, `Cargo.toml` and possibly update pin numbers or peripherals to match the specific MCU or board you are using.
+
+* [ ] Update .cargo/config.toml with the correct probe-rs command to use your specific MCU. For example for L432KCU6 it should be `probe-rs run --chip STM32L432KCUx`. (use `probe-rs chip list` to find your chip)
+* [ ] Update Cargo.toml to have the correct `embassy-stm32` feature. For example for L432KCU6 it should be `stm32l432kc`. Look in the `Cargo.toml` file of the `embassy-stm32` project to find the correct feature flag for your chip.
+* [ ] If your board has a special clock or power configuration, make sure that it is set up appropriately.
+* [ ] If your board has different pin mapping, update any pin numbers or peripherals in the given example code to match your schematic
+
+If you are unsure, please drop by the Embassy Matrix chat for support, and let us know:
+
+* Which example you are trying to run
+* Which chip and board you are using
+
+Embassy Chat: https://matrix.to/#/#embassy-rs:matrix.org
diff --git a/examples/stm32wle5/build.rs b/examples/stm32wle5/build.rs
new file mode 100644
index 000000000..8cd32d7ed
--- /dev/null
+++ b/examples/stm32wle5/build.rs
@@ -0,0 +1,5 @@
+fn main() {
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}
diff --git a/examples/stm32wle5/src/bin/adc.rs b/examples/stm32wle5/src/bin/adc.rs
new file mode 100644
index 000000000..ff1a5fa16
--- /dev/null
+++ b/examples/stm32wle5/src/bin/adc.rs
@@ -0,0 +1,100 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+#[cfg(feature = "defmt-rtt")]
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_stm32::adc::{Adc, SampleTime};
+use embassy_stm32::low_power::Executor;
+use embassy_stm32::rtc::{Rtc, RtcConfig};
+use embassy_time::Timer;
+use panic_probe as _;
+use static_cell::StaticCell;
+
+#[cortex_m_rt::entry]
+fn main() -> ! {
+    info!("main: Starting!");
+    Executor::take().run(|spawner| {
+        spawner.spawn(unwrap!(async_main(spawner)));
+    });
+}
+
+#[embassy_executor::task]
+async fn async_main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    // enable HSI clock
+    config.rcc.hsi = true;
+    // enable LSI clock for RTC
+    config.rcc.ls = embassy_stm32::rcc::LsConfig::default_lsi();
+    config.rcc.msi = Some(embassy_stm32::rcc::MSIRange::RANGE4M);
+    config.rcc.sys = embassy_stm32::rcc::Sysclk::MSI;
+    // enable ADC with HSI clock
+    config.rcc.mux.adcsel = embassy_stm32::pac::rcc::vals::Adcsel::HSI;
+    #[cfg(feature = "defmt-serial")]
+    {
+        // disable debug during sleep to reduce power consumption since we are
+        // using defmt-serial on LPUART1.
+        config.enable_debug_during_sleep = false;
+        // if we are using defmt-serial on LPUART1, we need to use HSI for the clock
+        // so that its registers are preserved during STOP modes.
+        config.rcc.mux.lpuart1sel = embassy_stm32::pac::rcc::vals::Lpuart1sel::HSI;
+    }
+    // Initialize STM32WL peripherals (use default config like wio-e5-async example)
+    let p = embassy_stm32::init(config);
+
+    // start with all GPIOs as analog to reduce power consumption
+    for r in [
+        embassy_stm32::pac::GPIOA,
+        embassy_stm32::pac::GPIOB,
+        embassy_stm32::pac::GPIOC,
+        embassy_stm32::pac::GPIOH,
+    ] {
+        r.moder().modify(|w| {
+            for i in 0..16 {
+                // don't reset these if probe-rs should stay connected!
+                #[cfg(feature = "defmt-rtt")]
+                if config.enable_debug_during_sleep && r == embassy_stm32::pac::GPIOA && [13, 14].contains(&i) {
+                    continue;
+                }
+                w.set_moder(i, embassy_stm32::pac::gpio::vals::Moder::ANALOG);
+            }
+        });
+    }
+    #[cfg(feature = "defmt-serial")]
+    {
+        use embassy_stm32::mode::Blocking;
+        use embassy_stm32::usart::Uart;
+        let config = embassy_stm32::usart::Config::default();
+        let uart = Uart::new_blocking(p.LPUART1, p.PC0, p.PC1, config).expect("failed to configure UART!");
+        static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
+        defmt_serial::defmt_serial(SERIAL.init(uart));
+    }
+
+    // give the RTC to the low_power executor...
+    let rtc_config = RtcConfig::default();
+    let rtc = Rtc::new(p.RTC, rtc_config);
+    embassy_stm32::low_power::stop_with_rtc(rtc);
+
+    info!("Hello World!");
+
+    let mut adc = Adc::new(p.ADC1);
+    adc.set_sample_time(SampleTime::CYCLES79_5);
+    let mut pin = p.PA10;
+
+    let mut vrefint = adc.enable_vrefint();
+    let vrefint_sample = adc.blocking_read(&mut vrefint);
+    let convert_to_millivolts = |sample| {
+        // From https://www.st.com/resource/en/datasheet/stm32g031g8.pdf
+        // 6.3.3 Embedded internal reference voltage
+        const VREFINT_MV: u32 = 1212; // mV
+
+        (u32::from(sample) * VREFINT_MV / u32::from(vrefint_sample)) as u16
+    };
+
+    loop {
+        let v = adc.blocking_read(&mut pin);
+        info!("--> {} - {} mV", v, convert_to_millivolts(v));
+        Timer::after_secs(1).await;
+    }
+}
diff --git a/examples/stm32wle5/src/bin/blinky.rs b/examples/stm32wle5/src/bin/blinky.rs
new file mode 100644
index 000000000..1191a1157
--- /dev/null
+++ b/examples/stm32wle5/src/bin/blinky.rs
@@ -0,0 +1,90 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+#[cfg(feature = "defmt-rtt")]
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::low_power::Executor;
+use embassy_stm32::rtc::{Rtc, RtcConfig};
+use embassy_time::Timer;
+use panic_probe as _;
+use static_cell::StaticCell;
+
+#[cortex_m_rt::entry]
+fn main() -> ! {
+    info!("main: Starting!");
+    Executor::take().run(|spawner| {
+        spawner.spawn(unwrap!(async_main(spawner)));
+    });
+}
+
+#[embassy_executor::task]
+async fn async_main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    // enable HSI clock
+    config.rcc.hsi = true;
+    // enable LSI clock for RTC
+    config.rcc.ls = embassy_stm32::rcc::LsConfig::default_lsi();
+    config.rcc.msi = Some(embassy_stm32::rcc::MSIRange::RANGE4M);
+    config.rcc.sys = embassy_stm32::rcc::Sysclk::MSI;
+    #[cfg(feature = "defmt-serial")]
+    {
+        // disable debug during sleep to reduce power consumption since we are
+        // using defmt-serial on LPUART1.
+        config.enable_debug_during_sleep = false;
+        // if we are using defmt-serial on LPUART1, we need to use HSI for the clock
+        // so that its registers are preserved during STOP modes.
+        config.rcc.mux.lpuart1sel = embassy_stm32::pac::rcc::vals::Lpuart1sel::HSI;
+    }
+    // Initialize STM32WL peripherals (use default config like wio-e5-async example)
+    let p = embassy_stm32::init(config);
+
+    // start with all GPIOs as analog to reduce power consumption
+    for r in [
+        embassy_stm32::pac::GPIOA,
+        embassy_stm32::pac::GPIOB,
+        embassy_stm32::pac::GPIOC,
+        embassy_stm32::pac::GPIOH,
+    ] {
+        r.moder().modify(|w| {
+            for i in 0..16 {
+                // don't reset these if probe-rs should stay connected!
+                #[cfg(feature = "defmt-rtt")]
+                if config.enable_debug_during_sleep && r == embassy_stm32::pac::GPIOA && [13, 14].contains(&i) {
+                    continue;
+                }
+                w.set_moder(i, embassy_stm32::pac::gpio::vals::Moder::ANALOG);
+            }
+        });
+    }
+    #[cfg(feature = "defmt-serial")]
+    {
+        use embassy_stm32::mode::Blocking;
+        use embassy_stm32::usart::Uart;
+        let config = embassy_stm32::usart::Config::default();
+        let uart = Uart::new_blocking(p.LPUART1, p.PC0, p.PC1, config).expect("failed to configure UART!");
+        static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
+        defmt_serial::defmt_serial(SERIAL.init(uart));
+    }
+
+    // give the RTC to the low_power executor...
+    let rtc_config = RtcConfig::default();
+    let rtc = Rtc::new(p.RTC, rtc_config);
+    embassy_stm32::low_power::stop_with_rtc(rtc);
+
+    info!("Hello World!");
+
+    let mut led = Output::new(p.PB5, Level::High, Speed::Low);
+
+    loop {
+        info!("low");
+        led.set_low();
+        Timer::after_millis(500).await;
+
+        info!("high");
+        led.set_high();
+        Timer::after_millis(500).await;
+    }
+}
diff --git a/examples/stm32wle5/src/bin/button_exti.rs b/examples/stm32wle5/src/bin/button_exti.rs
new file mode 100644
index 000000000..f07f9724d
--- /dev/null
+++ b/examples/stm32wle5/src/bin/button_exti.rs
@@ -0,0 +1,91 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+#[cfg(feature = "defmt-rtt")]
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_stm32::exti::ExtiInput;
+use embassy_stm32::gpio::Pull;
+use embassy_stm32::low_power::Executor;
+use embassy_stm32::rtc::{Rtc, RtcConfig};
+use panic_probe as _;
+use static_cell::StaticCell;
+
+#[cortex_m_rt::entry]
+fn main() -> ! {
+    info!("main: Starting!");
+    Executor::take().run(|spawner| {
+        spawner.spawn(unwrap!(async_main(spawner)));
+    });
+}
+
+#[embassy_executor::task]
+async fn async_main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    // enable HSI clock
+    config.rcc.hsi = true;
+    // enable LSI clock for RTC
+    config.rcc.ls = embassy_stm32::rcc::LsConfig::default_lsi();
+    config.rcc.msi = Some(embassy_stm32::rcc::MSIRange::RANGE4M);
+    config.rcc.sys = embassy_stm32::rcc::Sysclk::MSI;
+    // enable ADC with HSI clock
+    config.rcc.mux.adcsel = embassy_stm32::pac::rcc::vals::Adcsel::HSI;
+    #[cfg(feature = "defmt-serial")]
+    {
+        // disable debug during sleep to reduce power consumption since we are
+        // using defmt-serial on LPUART1.
+        config.enable_debug_during_sleep = false;
+        // if we are using defmt-serial on LPUART1, we need to use HSI for the clock
+        // so that its registers are preserved during STOP modes.
+        config.rcc.mux.lpuart1sel = embassy_stm32::pac::rcc::vals::Lpuart1sel::HSI;
+    }
+    // Initialize STM32WL peripherals (use default config like wio-e5-async example)
+    let p = embassy_stm32::init(config);
+
+    // start with all GPIOs as analog to reduce power consumption
+    for r in [
+        embassy_stm32::pac::GPIOA,
+        embassy_stm32::pac::GPIOB,
+        embassy_stm32::pac::GPIOC,
+        embassy_stm32::pac::GPIOH,
+    ] {
+        r.moder().modify(|w| {
+            for i in 0..16 {
+                // don't reset these if probe-rs should stay connected!
+                #[cfg(feature = "defmt-rtt")]
+                if config.enable_debug_during_sleep && r == embassy_stm32::pac::GPIOA && [13, 14].contains(&i) {
+                    continue;
+                }
+                w.set_moder(i, embassy_stm32::pac::gpio::vals::Moder::ANALOG);
+            }
+        });
+    }
+    #[cfg(feature = "defmt-serial")]
+    {
+        use embassy_stm32::mode::Blocking;
+        use embassy_stm32::usart::Uart;
+        let config = embassy_stm32::usart::Config::default();
+        let uart = Uart::new_blocking(p.LPUART1, p.PC0, p.PC1, config).expect("failed to configure UART!");
+        static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
+        defmt_serial::defmt_serial(SERIAL.init(uart));
+    }
+
+    // give the RTC to the low_power executor...
+    let rtc_config = RtcConfig::default();
+    let rtc = Rtc::new(p.RTC, rtc_config);
+    embassy_stm32::low_power::stop_with_rtc(rtc);
+
+    info!("Hello World!");
+
+    let mut button = ExtiInput::new(p.PA0, p.EXTI0, Pull::Up);
+
+    info!("Press the USER button...");
+
+    loop {
+        button.wait_for_falling_edge().await;
+        info!("Pressed!");
+        button.wait_for_rising_edge().await;
+        info!("Released!");
+    }
+}
diff --git a/examples/stm32wle5/src/bin/i2c.rs b/examples/stm32wle5/src/bin/i2c.rs
new file mode 100644
index 000000000..af07f911e
--- /dev/null
+++ b/examples/stm32wle5/src/bin/i2c.rs
@@ -0,0 +1,110 @@
+#![no_std]
+#![no_main]
+
+use defmt::*;
+#[cfg(feature = "defmt-rtt")]
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_stm32::i2c::I2c;
+use embassy_stm32::low_power::Executor;
+use embassy_stm32::rtc::{Rtc, RtcConfig};
+use embassy_stm32::time::Hertz;
+use embassy_stm32::{bind_interrupts, i2c, peripherals};
+use embassy_time::{Duration, Timer};
+use panic_probe as _;
+use static_cell::StaticCell;
+
+bind_interrupts!(struct IrqsI2C{
+    I2C2_EV => i2c::EventInterruptHandler<peripherals::I2C2>;
+    I2C2_ER => i2c::ErrorInterruptHandler<peripherals::I2C2>;
+});
+
+#[cortex_m_rt::entry]
+fn main() -> ! {
+    info!("main: Starting!");
+    Executor::take().run(|spawner| {
+        spawner.spawn(unwrap!(async_main(spawner)));
+    });
+}
+
+#[embassy_executor::task]
+async fn async_main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    // enable HSI clock
+    config.rcc.hsi = true;
+    // enable LSI clock for RTC
+    config.rcc.ls = embassy_stm32::rcc::LsConfig::default_lsi();
+    config.rcc.msi = Some(embassy_stm32::rcc::MSIRange::RANGE4M);
+    config.rcc.sys = embassy_stm32::rcc::Sysclk::MSI;
+    // enable ADC with HSI clock
+    config.rcc.mux.i2c2sel = embassy_stm32::pac::rcc::vals::I2c2sel::HSI;
+    #[cfg(feature = "defmt-serial")]
+    {
+        // disable debug during sleep to reduce power consumption since we are
+        // using defmt-serial on LPUART1.
+        config.enable_debug_during_sleep = false;
+        // if we are using defmt-serial on LPUART1, we need to use HSI for the clock
+        // so that its registers are preserved during STOP modes.
+        config.rcc.mux.lpuart1sel = embassy_stm32::pac::rcc::vals::Lpuart1sel::HSI;
+    }
+    // Initialize STM32WL peripherals (use default config like wio-e5-async example)
+    let p = embassy_stm32::init(config);
+
+    // start with all GPIOs as analog to reduce power consumption
+    for r in [
+        embassy_stm32::pac::GPIOA,
+        embassy_stm32::pac::GPIOB,
+        embassy_stm32::pac::GPIOC,
+        embassy_stm32::pac::GPIOH,
+    ] {
+        r.moder().modify(|w| {
+            for i in 0..16 {
+                // don't reset these if probe-rs should stay connected!
+                #[cfg(feature = "defmt-rtt")]
+                if config.enable_debug_during_sleep && r == embassy_stm32::pac::GPIOA && [13, 14].contains(&i) {
+                    continue;
+                }
+                w.set_moder(i, embassy_stm32::pac::gpio::vals::Moder::ANALOG);
+            }
+        });
+    }
+    #[cfg(feature = "defmt-serial")]
+    {
+        use embassy_stm32::mode::Blocking;
+        use embassy_stm32::usart::Uart;
+        let config = embassy_stm32::usart::Config::default();
+        let uart = Uart::new_blocking(p.LPUART1, p.PC0, p.PC1, config).expect("failed to configure UART!");
+        static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
+        defmt_serial::defmt_serial(SERIAL.init(uart));
+    }
+
+    // give the RTC to the low_power executor...
+    let rtc_config = RtcConfig::default();
+    let rtc = Rtc::new(p.RTC, rtc_config);
+    embassy_stm32::low_power::stop_with_rtc(rtc);
+
+    info!("Hello World!");
+    let en3v3 = embassy_stm32::gpio::Output::new(
+        p.PA9,
+        embassy_stm32::gpio::Level::High,
+        embassy_stm32::gpio::Speed::High,
+    );
+    core::mem::forget(en3v3); // keep the output pin enabled
+
+    let mut i2c = I2c::new(p.I2C2, p.PB15, p.PA15, IrqsI2C, p.DMA1_CH6, p.DMA1_CH7, {
+        let mut config = i2c::Config::default();
+        config.frequency = Hertz::khz(100);
+        config.timeout = Duration::from_millis(500);
+        config
+    });
+
+    loop {
+        let mut buffer = [0; 2];
+        // read the temperature register of the onboard lm75
+        match i2c.read(0x48, &mut buffer).await {
+            Ok(_) => info!("--> {:?}", buffer),
+            Err(e) => info!("--> Error: {:?}", e),
+        }
+        Timer::after_secs(5).await;
+    }
+}
diff --git a/examples/stm32wle5/stm32wle5.code-workspace b/examples/stm32wle5/stm32wle5.code-workspace
new file mode 100644
index 000000000..a7c4a0ebd
--- /dev/null
+++ b/examples/stm32wle5/stm32wle5.code-workspace
@@ -0,0 +1,13 @@
+{
+        "folders": [
+                {
+                        "path": "."
+                }
+        ],
+        "settings": {
+                "rust-analyzer.cargo.target": "thumbv7em-none-eabi",
+                "rust-analyzer.cargo.allTargets": false,
+                "rust-analyzer.cargo.targetDir": "target/rust-analyzer",
+                "rust-analyzer.checkOnSave": true,
+        }
+}