examples: update blinky example to use GPIO driver (#26)

Use the recently completed GPIO driver in the blinky example

Cargo.toml

@@ -69,3 +69,7 @@ codegen-units = 1 # better optimizations
 debug = true # symbols are nice and they don't increase the size in flash
 lto = true # better optimizations
 opt-level = "s" # optimize for binary size
+
+[[example]]
+name = "blinky"
+required-features = ["stm32h503"]

examples/blinky.rs

@@ -1,3 +1,4 @@
+#![deny(warnings)]
 #![no_main]
 #![no_std]
 
@@ -6,7 +7,7 @@ mod utilities;
 use cortex_m_rt::entry;
 use embedded_hal::delay::DelayNs;
 use fugit::SecsDurationU32;
-use stm32h5xx_hal::{delay::Delay, pac, prelude::*, rcc::ResetEnable};
+use stm32h5xx_hal::{delay::Delay, pac, prelude::*};
 
 #[entry]
 fn main() -> ! {
@@ -22,20 +23,18 @@ fn main() -> ! {
     let rcc = dp.RCC.constrain();
     let ccdr = rcc.sys_ck(250.MHz()).freeze(pwrcfg, &dp.SBS);
 
-    ccdr.peripheral.GPIOA.enable();
-
-    dp.GPIOA.moder().write(|w| w.mode5().output()); // output
-    dp.GPIOA.pupdr().write(|w| w.pupd5().pull_up()); // pull-up
+    let gpioa = dp.GPIOA.split(ccdr.peripheral.GPIOA);
+    let mut led = gpioa.pa5.into_push_pull_output();
 
     let mut delay = Delay::new(cp.SYST, &ccdr.clocks);
     let duration = SecsDurationU32::secs(1).to_millis();
 
     loop {
-        dp.GPIOA.odr().write(|w| w.od5().low());
-        delay.delay_ms(duration);
+        led.set_low();
         log::info!("Off");
-        dp.GPIOA.odr().write(|w| w.od5().high());
         delay.delay_ms(duration);
+        led.set_high();
         log::info!("On");
+        delay.delay_ms(duration);
     }
 }