fixup! Serial: Replace Pins trait with TxPin / RxPin

Author: dbrgn

examples/rtc.rs

@@ -45,7 +45,8 @@ fn main() -> ! {
 
     let serial = dp.USART2
         .usart(
-            (gpioa.pa2, gpioa.pa3),
+            gpioa.pa2,
+            gpioa.pa3,
             serial::Config::default()
                 .baudrate(115_200.bps()),
             &mut rcc,

examples/serial.rs

@@ -22,20 +22,14 @@ fn main() -> ! {
     // the RCC register.
     let gpioa = dp.GPIOA.split(&mut rcc);
 
-    #[cfg(feature = "stm32l0x1")]
-    let tx_pin = gpioa.pa9;
-    #[cfg(feature = "stm32l0x1")]
-    let rx_pin = gpioa.pa10;
-
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let tx_pin = gpioa.pa14;
-    #[cfg(any(feature = "stm32l0x2", feature = "stm32l0x3"))]
-    let rx_pin = gpioa.pa15;
+    // Choose TX / RX pins
+    let tx_pin = gpioa.pa2;
+    let rx_pin = gpioa.pa3;
 
     // Configure the serial peripheral.
     let serial = dp
         .USART2
-        .usart((tx_pin, rx_pin), serial::Config::default(), &mut rcc)
+        .usart(tx_pin, rx_pin, serial::Config::default(), &mut rcc)
         .unwrap();
 
     let (mut tx, mut rx) = serial.split();

examples/serial_dma.rs

@@ -42,7 +42,8 @@ fn main() -> ! {
     let (mut tx, mut rx) = dp
         .USART2
         .usart(
-            (gpioa.pa2, gpioa.pa3),
+            gpioa.pa2,
+            gpioa.pa3,
             serial::Config::default().baudrate(115_200.bps()),
             &mut rcc,
         )

examples/serial_dma_async.rs

@@ -46,14 +46,15 @@ fn main() -> ! {
     let gpioa = dp.GPIOA.split(&mut rcc);
 
     let (tx, rx) = dp
-    .USART2
-    .usart(
-        (gpioa.pa2, gpioa.pa3),
-        serial::Config::default().baudrate(115_200.bps()),
-        &mut rcc,
-    )
-    .unwrap()
-    .split();
+        .USART2
+        .usart(
+            gpioa.pa2,
+            gpioa.pa3,
+            serial::Config::default().baudrate(115_200.bps()),
+            &mut rcc,
+        )
+        .unwrap()
+        .split();
 
     // we only have two elements for each queue, so U2 is fine (size is max 2)
     let mut rx_buffers: Queue<Pin<DmaBuffer>, U2> = Queue::new();