1 files changed, 43 insertions, 0 deletions
diff --git a/src/led.rs b/src/led.rs
new file mode 100644
index 0000000..d8d9912
--- /dev/null
+++ b/src/led.rs
@@ -0,0 +1,43 @@
+use gd32vf103_pac::Peripherals;
+
+pub struct LED();
+
+impl LED {
+    pub fn new(peripherals: &Peripherals) -> Self {
+        peripherals.RCU.apb2en.write(|w| {
+            w.paen().set_bit()
+        });
+
+        peripherals.GPIOA.ctl0.write(|w| unsafe {
+            // output mode, push-pull
+            w.ctl7().bits(0b00);
+            // 50 mhz output rate
+            w.md7().bits(0b11);
+            w
+        });
+        Self {}
+    }
+
+    pub fn is_on(&self) -> bool {
+        let gpio = unsafe { Peripherals::steal() }.GPIOA;
+        gpio.octl.read().octl7().bit()
+    }
+
+    pub fn on(&self) {
+        let gpio = unsafe { Peripherals::steal() }.GPIOA;
+        gpio.bop.write(|w| w.bop7().set_bit());
+    }
+
+    pub fn off(&self) {
+        let gpio = unsafe { Peripherals::steal() }.GPIOA;
+        gpio.bc.write(|w| w.cr7().set_bit());
+    }
+
+    pub fn toggle(&self) {
+        if self.is_on() {
+            self.off();
+        } else {
+            self.on();
+        }
+    }
+}