fix examples

examples/adc.rs

@@ -22,7 +22,7 @@ fn main() -> ! {
     // practical needs. User specified value is be approximated using supported
     // prescaler values 2/4/6/8.
     let clocks = rcc.cfgr.adcclk(2.MHz()).freeze(&mut flash.acr);
-    hprintln!("adc freq: {}", clocks.adcclk()).unwrap();
+    hprintln!("adc freq: {}", clocks.adcclk());
 
     // Setup ADC
     let mut adc1 = adc::Adc::adc1(p.ADC1, clocks);
@@ -41,12 +41,12 @@ fn main() -> ! {
 
     loop {
         let data: u16 = adc1.read(&mut ch0).unwrap();
-        hprintln!("adc1: {}", data).unwrap();
+        hprintln!("adc1: {}", data);
 
         #[cfg(any(feature = "stm32f103", feature = "connectivity"))]
         {
             let data1: u16 = adc2.read(&mut ch1).unwrap();
-            hprintln!("adc2: {}", data1).unwrap();
+            hprintln!("adc2: {}", data1);
         }
     }
 }

examples/adc_temperature.rs

@@ -34,8 +34,8 @@ fn main() -> ! {
         usbpre: rcc::UsbPre::DIV1_5,
         adcpre: rcc::AdcPre::DIV2,
     }, &mut flash.acr);*/
-    hprintln!("sysclk freq: {}", clocks.sysclk()).unwrap();
-    hprintln!("adc freq: {}", clocks.adcclk()).unwrap();
+    hprintln!("sysclk freq: {}", clocks.sysclk());
+    hprintln!("adc freq: {}", clocks.adcclk());
 
     // Setup ADC
     let mut adc = adc::Adc::adc1(p.ADC1, clocks);
@@ -44,6 +44,6 @@ fn main() -> ! {
     loop {
         let temp = adc.read_temp();
 
-        hprintln!("temp: {}", temp).unwrap();
+        hprintln!("temp: {}", temp);
     }
 }

examples/crc.rs

@@ -21,7 +21,7 @@ fn main() -> ! {
     crc.write(0x12345678);
 
     let val = crc.read();
-    hprintln!("found={:08x}, expected={:08x}", val, 0xdf8a8a2b_u32).ok();
+    hprintln!("found={:08x}, expected={:08x}", val, 0xdf8a8a2b_u32);
 
     loop {}
 }

examples/dynamic_gpio.rs

@@ -39,7 +39,7 @@ fn main() -> ! {
     loop {
         pin.make_floating_input(&mut gpioc.crh);
         block!(timer.wait()).unwrap();
-        hprintln!("{}", pin.is_high().unwrap()).unwrap();
+        hprintln!("{}", pin.is_high().unwrap());
 
         pin.make_push_pull_output(&mut gpioc.crh);
         pin.set_high().unwrap();

examples/hello.rs

@@ -14,6 +14,6 @@ use cortex_m_rt::entry;
 
 #[entry]
 fn main() -> ! {
-    hprintln!("Hello, world!").unwrap();
+    hprintln!("Hello, world!");
     loop {}
 }

examples/mfrc522.rs

@@ -8,8 +8,13 @@ use cortex_m::iprintln;
 
 use cortex_m_rt::entry;
 use embedded_hal::digital::v1_compat::OldOutputPin;
+use embedded_hal::spi::{Mode, Phase, Polarity};
 use mfrc522::Mfrc522;
 use stm32f1xx_hal::{pac, prelude::*, spi::Spi};
+pub const MODE: Mode = Mode {
+    polarity: Polarity::IdleLow,
+    phase: Phase::CaptureOnFirstTransition,
+};
 
 #[entry]
 fn main() -> ! {
@@ -32,7 +37,7 @@ fn main() -> ! {
         dp.SPI1,
         (sck, miso, mosi),
         &mut afio.mapr,
-        mfrc522::MODE,
+        MODE,
         1.MHz(),
         clocks,
     );
@@ -46,7 +51,7 @@ fn main() -> ! {
     loop {
         if let Ok(atqa) = mfrc522.reqa() {
             if let Ok(uid) = mfrc522.select(&atqa) {
-                iprintln!(_stim, "* {:?}", uid);
+                iprintln!(_stim, "* {:?}", uid.as_bytes());
             }
         }
     }

examples/multi_mode_gpio.rs

@@ -37,7 +37,7 @@ fn main() -> ! {
     // Wait for the timer to trigger an update and change the state of the LED
     loop {
         block!(timer.wait()).unwrap();
-        hprintln!("{}", pin.is_high()).unwrap();
+        hprintln!("{}", pin.is_high());
         pin.as_push_pull_output(&mut gpioc.crh, |out| {
             out.set_high();
             block!(timer.wait()).unwrap();

examples/panics.rs

@@ -13,7 +13,7 @@ use cortex_m_rt::{entry, exception, ExceptionFrame};
 
 #[entry]
 fn main() -> ! {
-    hprintln!("Hello, world!").unwrap();
+    hprintln!("Hello, world!");
     loop {}
 }
 

examples/qei.rs

@@ -48,6 +48,6 @@ fn main() -> ! {
 
         let elapsed = after.wrapping_sub(before) as i16;
 
-        hprintln!("{}", elapsed).unwrap();
+        hprintln!("{}", elapsed);
     }
 }

examples/rtc.rs

@@ -22,6 +22,6 @@ fn main() -> ! {
     let rtc = Rtc::new(p.RTC, &mut backup_domain);
 
     loop {
-        hprintln!("time: {}", rtc.current_time()).unwrap();
+        hprintln!("time: {}", rtc.current_time());
     }
 }