Support for STM32L1

* Add RCC
* Fix more issues with dash in chip names
* Update stm32-data version
* Add blinky and spi example

examples/stm32l1/src/bin/blinky.rs

@@ -0,0 +1,30 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+
+use embassy::executor::Spawner;
+use embassy::time::{Duration, Timer};
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embassy_stm32::Peripherals;
+use embedded_hal::digital::v2::OutputPin;
+use example_common::*;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World!");
+
+    let mut led = Output::new(p.PA12, Level::High, Speed::Low);
+
+    loop {
+        info!("high");
+        unwrap!(led.set_high());
+        Timer::after(Duration::from_millis(1000)).await;
+
+        info!("low");
+        unwrap!(led.set_low());
+        Timer::after(Duration::from_millis(1000)).await;
+    }
+}

examples/stm32l1/src/bin/spi.rs

@@ -0,0 +1,43 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+
+use embassy::executor::Spawner;
+use embassy_stm32::gpio::{Level, Output, Speed};
+use embedded_hal::digital::v2::OutputPin;
+use example_common::*;
+
+use embassy_stm32::dma::NoDma;
+use embassy_stm32::spi::{Config, Spi};
+use embassy_stm32::time::Hertz;
+use embassy_stm32::Peripherals;
+use embedded_hal::blocking::spi::Transfer;
+
+#[embassy::main]
+async fn main(_spawner: Spawner, p: Peripherals) {
+    info!("Hello World, folks!");
+
+    let mut spi = Spi::new(
+        p.SPI1,
+        p.PA5,
+        p.PA7,
+        p.PA6,
+        NoDma,
+        NoDma,
+        Hertz(1_000_000),
+        Config::default(),
+    );
+
+    let mut cs = Output::new(p.PA4, Level::High, Speed::VeryHigh);
+
+    loop {
+        let mut buf = [0x0Au8; 4];
+        unwrap!(cs.set_low());
+        unwrap!(spi.transfer(&mut buf));
+        unwrap!(cs.set_high());
+        info!("xfer {=[u8]:x}", buf);
+    }
+}