Minor cleanup

Author: arjanmels

examples/serial.rs

@@ -1,6 +1,5 @@
 #![no_std]
 #![no_main]
-#![feature(asm)]
 
 use core::{fmt::Write, panic::PanicInfo};
 
@@ -83,8 +82,8 @@ fn main() -> ! {
     }
 }
 
-/// Basic panic handler - just loops
 #[panic_handler]
-fn panic(_info: &PanicInfo) -> ! {
+fn panic(info: &PanicInfo) -> ! {
+    dprintln!("\n\n*** {:?}", info);
     loop {}
 }

src/serial.rs

@@ -143,6 +143,7 @@ pub mod config {
 pub struct Pins<
     TX: OutputPin,
     RX: InputPin,
+    // default pins to allow type inference
     CTS: InputPin = crate::gpio::Gpio19<crate::gpio::Input<crate::gpio::Floating>>,
     RTS: OutputPin = crate::gpio::Gpio22<crate::gpio::Output<crate::gpio::PushPull>>,
 > {
@@ -158,6 +159,7 @@ pub struct Serial<
     UART: Instance,
     TX: OutputPin,
     RX: InputPin,
+    // default pins to allow type inference
     CTS: InputPin = crate::gpio::Gpio19<crate::gpio::Input<crate::gpio::Floating>>,
     RTS: OutputPin = crate::gpio::Gpio22<crate::gpio::Output<crate::gpio::PushPull>>,
 > {