feat: blinky external

examples/blinky-external.rs

@@ -0,0 +1,46 @@
+#![no_main]
+#![no_std]
+
+use defmt_rtt as _; // global logger
+//
+use panic_probe as _;
+use cortex_m_rt::entry;
+use hal::{pac, prelude::*, rcc::Config};
+
+#[entry]
+fn main() -> ! {
+    let dp = pac::Peripherals::take().unwrap();
+    let cp = cortex_m::Peripherals::take().unwrap();
+
+    let mut rcc = dp.RCC.freeze(Config::hsi16());
+
+    let gpioa = dp.GPIOA.split(&mut rcc);
+    let gpiob = dp.GPIOB.split(&mut rcc);
+
+    let mut builtin_led = gpioa.pa5.into_push_pull_output();
+    let mut led0 = gpiob.pb5.into_push_pull_output(); // D4
+    let mut led1 = gpiob.pb4.into_push_pull_output(); // D5
+
+    let mut delay = cp.SYST.delay(rcc.clocks);
+
+    builtin_led.set_high().unwrap();
+    led0.set_high().unwrap();
+    led1.set_high().unwrap();
+
+    loop {
+        builtin_led.set_high().unwrap();
+        led0.set_low().unwrap();
+        led1.set_low().unwrap();
+        delay.delay_ms(100_u16);
+
+        led0.set_high().unwrap();
+        delay.delay_ms(100_u16);
+
+        builtin_led.set_low().unwrap();
+        delay.delay_ms(100_u16);
+
+        led0.set_low().unwrap();
+        led1.set_high().unwrap();
+        delay.delay_ms(100_u16);
+    }
+}