Merge pull request #5108 from liebman/low-power-stm32wl5x

low-power: stm32wl5x

5 files changed, 125 insertions, 0 deletions

diff --git a/examples/stm32wl5x-lp/.cargo/config.toml b/examples/stm32wl5x-lp/.cargo/config.toml
new file mode 100644
index 000000000..969068656
--- /dev/null
+++ b/examples/stm32wl5x-lp/.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 = "debug"
diff --git a/examples/stm32wl5x-lp/Cargo.toml b/examples/stm32wl5x-lp/Cargo.toml
new file mode 100644
index 000000000..b1823fb8a
--- /dev/null
+++ b/examples/stm32wl5x-lp/Cargo.toml
@@ -0,0 +1,39 @@
+[package]
+edition = "2024"
+name = "embassy-stm32wl5x-lp"
+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", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "unstable-pac", "exti", "chrono", "low-power-pender"] }
+embassy-sync = { version = "0.7.2", path = "../../embassy-sync", features = ["defmt"] }
+embassy-executor = { version = "0.9.0", path = "../../embassy-executor", features = ["defmt"] }
+embassy-time = { version = "0.5.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
+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 = { git = "https://github.com/gauteh/defmt-serial", rev = "411ae7fa909b4fd2667885aff687e009b9108190", 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"] }
+chrono = { version = "^0.4", default-features = false }
+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/stm32wl5x-lp/build.rs b/examples/stm32wl5x-lp/build.rs
new file mode 100644
index 000000000..8cd32d7ed
--- /dev/null
+++ b/examples/stm32wl5x-lp/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/stm32wl5x-lp/memory.x b/examples/stm32wl5x-lp/memory.x
new file mode 100644
index 000000000..4590867a8
--- /dev/null
+++ b/examples/stm32wl5x-lp/memory.x
@@ -0,0 +1,15 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  FLASH                             : ORIGIN = 0x08000000, LENGTH = 256K
+  SHARED_RAM                  (rwx) : ORIGIN = 0x20000000, LENGTH = 128
+  RAM                         (rwx) : ORIGIN = 0x20000080, LENGTH = 64K - 128
+}
+
+SECTIONS
+{
+    .shared_data :
+    {
+        *(.shared_data)
+    } > SHARED_RAM
+}
diff --git a/examples/stm32wl5x-lp/src/bin/blinky.rs b/examples/stm32wl5x-lp/src/bin/blinky.rs
new file mode 100644
index 000000000..60b671a77
--- /dev/null
+++ b/examples/stm32wl5x-lp/src/bin/blinky.rs
@@ -0,0 +1,57 @@
+// This example is configured for the nucleo-wl55jc board. Curret monitor should show just a few microamps when the device is in stop2 mode.
+#![no_std]
+#![no_main]
+
+use core::mem::MaybeUninit;
+
+use defmt::*;
+#[cfg(feature = "defmt-rtt")]
+use defmt_rtt as _;
+use embassy_executor::Spawner;
+use embassy_stm32::SharedData;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_time::Timer;
+use panic_probe as _;
+
+#[unsafe(link_section = ".shared_data")]
+static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
+
+#[embassy_executor::main(executor = "embassy_stm32::Executor", entry = "cortex_m_rt::entry")]
+async fn async_main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    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;
+    }
+    let p = embassy_stm32::init_primary(config, &SHARED_DATA);
+
+    #[cfg(feature = "defmt-serial")]
+    {
+        use embassy_stm32::mode::Blocking;
+        use embassy_stm32::usart::Uart;
+        use static_cell::StaticCell;
+        let config = embassy_stm32::usart::Config::default();
+        let uart = Uart::new_blocking(p.LPUART1, p.PA3, p.PA2, config).expect("failed to configure UART!");
+        static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
+        defmt_serial::defmt_serial(SERIAL.init(uart));
+    }
+
+    info!("Hello World!");
+
+    let mut led = Output::new(p.PB15, Level::High, Speed::Low);
+
+    loop {
+        info!("low");
+        led.set_low();
+        Timer::after_millis(5000).await;
+
+        info!("high");
+        led.set_high();
+        Timer::after_millis(5000).await;
+    }
+}