blink on lpc1114

rust-embedded/lpc1114-test/src/main.rs

@@ -1,12 +1,25 @@
 #![no_main]
 #![no_std]
 
-// Halt on panic
 use panic_semihosting as _;
 
 use cortex_m_rt::entry;
 
 #[entry]
 fn main() -> ! {
-    loop {}
+    let cp = cortex_m::Peripherals::take().unwrap();
+
+    // SAFETY: yes... ha ha ha... YES
+    let gpio0 = unsafe { &(*lpc11xx::GPIO0::ptr()) };
+
+    gpio0.dir.write(|w| w.dir7().output());
+
+    let mut delay = cortex_m::delay::Delay::new(cp.SYST, 12_000_000);
+
+    loop {
+        gpio0.data.write(|w| w.data7().high());
+        delay.delay_ms(500);
+        gpio0.data.write(|w| w.data7().low());
+        delay.delay_ms(500);
+    }
 }