implicit wait()

bluepill-rs/src/dmx.rs

@@ -31,7 +31,14 @@ impl DMX {
     }
 
     pub fn send(&mut self, data: &[u8; 512]) {
-        if let Self::Idle(idle) = self {
+        if let Self::Busy(_) = self {
+            self.wait();
+        }
+
+        let Self::Idle(idle) = self else {
+            panic!("Broken DMX State!")
+        };
+
         let txbuffer = idle
             .txbuffer
             .take()
@@ -41,10 +48,10 @@ impl DMX {
         txbuffer.copy_from_slice(data);
         *self = Self::Busy(Some(tx.write(txbuffer)));
     }
-    }
 
     pub fn wait(&mut self) {
-        if let Self::Busy(xfer) = self {
+        let Self::Busy(xfer) = self else { return };
+
         let xfer = xfer.take().unwrap();
         let (txbuffer, tx) = xfer.wait();
 
@@ -54,4 +61,3 @@ impl DMX {
         });
     }
 }
-}

bluepill-rs/src/main.rs

@@ -9,7 +9,7 @@ mod dmx;
 // extern crate panic_halt;
 extern crate panic_semihosting;
 
-#[rtic::app(device = stm32f1xx_hal::pac, dispatchers = [PVD])]
+#[rtic::app(device = stm32f1xx_hal::pac, dispatchers = [SPI1, SPI2, SPI3])]
 mod app {
     use cortex_m::singleton;
     use stm32f1xx_hal::{gpio, pac, prelude::*, serial, timer};
@@ -87,7 +87,9 @@ mod app {
 
                 // Configure gpio C pin 13 as a push-pull output. The `crh` register is passed to the function
                 // in order to configure the port. For pins 0-7, crl should be passed instead.
-                led: gpioc.pc13.into_push_pull_output(&mut gpioc.crh),
+                led: gpioc
+                    .pc13
+                    .into_push_pull_output_with_state(&mut gpioc.crh, gpio::PinState::High),
             },
             init::Monotonics(mono),
         )
@@ -107,7 +109,7 @@ mod app {
         cx.local.led.toggle();
         cx.shared.delay_us.lock(|d| d.delay(1.secs()));
 
-        cx.local.dmx.wait();
+        // cx.local.dmx.wait();
         foo::spawn().unwrap();
     }
 }