get serial printing on usart1 (tx: pa2, rx: pa3)

1 files changed, 23 insertions, 26 deletions

diff --git a/src/led.rs b/src/led.rs
index 951a32e..536121b 100644
--- a/src/led.rs
+++ b/src/led.rs
@@ -1,41 +1,38 @@
-use gd32vf103_pac::Peripherals;
+use gd32vf103xx_hal::{
+    gpio::{Floating, Input, Output, PushPull, Pxx, State, gpioa::PA7},
+};
+use embedded_hal::digital::v2::OutputPin;
 
-#[derive(Clone, Copy)]
-pub struct LED();
+pub struct LED {
+    pin: Pxx<Output<PushPull>>,
+    state: State,
+}
 
 impl LED {
-    pub fn new() -> Self {
-        let peripherals = unsafe { Peripherals::steal() };
-        peripherals.RCU.apb2en.modify(|_, w| {
-            w.paen().set_bit()
-        });
-
-        peripherals.GPIOA.ctl0.modify(|_, w| unsafe {
-            // output mode, push-pull
-            w.ctl7().bits(0b00);
-            // 50 mhz output rate
-            w.md7().bits(0b11);
-            w
-        });
-        Self()
+    pub fn new(pin: PA7<Input<Floating>>) -> Self {
+        let mut p = pin.into_push_pull_output().downgrade();
+        p.set_low().ok();
+        Self { pin: p, state: State::Low }
     }
 
     pub fn is_on(&self) -> bool {
-        let gpio = unsafe { Peripherals::steal() }.GPIOA;
-        gpio.octl.read().octl7().bit()
+        match self.state {
+            State::High => true,
+            State::Low => false,
+        }
     }
 
-    pub fn on(&self) {
-        let gpio = unsafe { Peripherals::steal() }.GPIOA;
-        gpio.bop.write(|w| w.bop7().set_bit());
+    pub fn on(&mut self) {
+        self.state = State::High;
+        self.pin.set_high().ok();
     }
 
-    pub fn off(&self) {
-        let gpio = unsafe { Peripherals::steal() }.GPIOA;
-        gpio.bc.write(|w| w.cr7().set_bit());
+    pub fn off(&mut self) {
+        self.state = State::Low;
+        self.pin.set_low().ok();
     }
 
-    pub fn toggle(&self) {
+    pub fn toggle(&mut self) {
         if self.is_on() {
             self.off();
         } else {