Added Timer support.

Author: Luctius

Cargo.toml

@@ -17,6 +17,10 @@ nb = "0.1.1"
 stm32g4 = "0.13.0"
 paste = "1.0"
 
+[dependencies.cast]
+version = "0.2.7"
+default-features = false
+
 [dependencies.bare-metal]
 features = ["const-fn"]
 version = "0.2.5"

examples/blinky_delay.rs

@@ -3,29 +3,47 @@
 #![no_main]
 #![no_std]
 
-extern crate cortex_m;
-extern crate cortex_m_rt as rt;
-extern crate panic_halt;
-extern crate stm32g4xx_hal as hal;
-
+use hal::delay::DelayFromCountDownTimer;
 use hal::prelude::*;
 use hal::rcc::Config;
 use hal::stm32;
-use rt::entry;
+use hal::timer::Timer;
+use stm32g4xx_hal as hal;
+
+use cortex_m_rt::entry;
+use log::info;
+
+#[macro_use]
+mod utils;
 
 #[entry]
 fn main() -> ! {
+    utils::logger::init();
+
+    info!("start");
     let dp = stm32::Peripherals::take().expect("cannot take peripherals");
     let cp = cortex_m::Peripherals::take().expect("cannot take core peripherals");
     let mut rcc = dp.RCC.freeze(Config::hsi());
 
-    let gpiob = dp.GPIOB.split(&mut rcc);
-    let mut led = gpiob.pb8.into_push_pull_output();
+    info!("Init Led");
+    let gpioa = dp.GPIOA.split(&mut rcc);
+    let mut led = gpioa.pa5.into_push_pull_output();
+
+    info!("Init SYST delay");
+    let mut delay_syst = cp.SYST.delay(&rcc.clocks);
 
-    let mut delay = cp.SYST.delay(&rcc.clocks);
+    info!("Init Timer2 delay");
+    let timer2 = Timer::new(dp.TIM2, &rcc.clocks);
+    let mut delay_tim2 = DelayFromCountDownTimer::new(timer2.start_count_down(100.ms()));
 
     loop {
+        info!("Toggle");
+        led.toggle().unwrap();
+        info!("SYST delay");
+        delay_syst.delay(1000.ms());
+        info!("Toggle");
         led.toggle().unwrap();
-        delay.delay(500.ms());
+        info!("TIM2 delay");
+        delay_tim2.delay_ms(1000_u16);
     }
 }

src/lib.rs

@@ -31,6 +31,11 @@ pub extern crate stm32g4;
 
 pub use nb::block;
 
+mod sealed {
+    pub trait Sealed {}
+}
+pub(crate) use sealed::Sealed;
+
 #[cfg(feature = "stm32g431")]
 pub use stm32g4::stm32g431 as stm32;
 
@@ -76,5 +81,5 @@ pub mod signature;
 // pub mod stopwatch;
 pub mod syscfg;
 pub mod time;
-// pub mod timer;
+pub mod timer;
 // pub mod watchdog;