remove trailing whitespaces

Author: youndong-lg

examples/blinky-stm32h747i-disco.rs

@@ -1,5 +1,5 @@
 #![deny(warnings)] // This code runs on stm32h747i-disco and does not use example! macro.
-#![allow(unused_macros)] 
+#![allow(unused_macros)]
 #![no_main]
 #![no_std]
 
@@ -16,45 +16,45 @@ fn main() -> ! {
     utilities::logger::init();
     let cp = cortex_m::Peripherals::take().unwrap();
     let dp = pac::Peripherals::take().unwrap();
-    
+
     // Constrain and Freeze power
     info!("Setup PWR...                  ");
     let pwr = dp.PWR.constrain();
     // let pwrcfg = example_power!(pwr).freeze();
     let pwrcfg = pwr.smps().freeze(); // This code works normally on stm32h747i-disco.
-    
+
     // Constrain and Freeze clock
     // RCC (Reset and Clock Control)
     info!("Setup RCC...                  ");
     let rcc = dp.RCC.constrain();
-    
+
     // CCDR (Core Clock Distribution and Reset)
     //  link: https://docs.rs/stm32h7xx-hal/latest/stm32h7xx_hal/rcc/struct.Ccdr.html
     let ccdr = rcc.sys_ck(100.MHz()).freeze(pwrcfg, &dp.SYSCFG);
-    
+
     info!("");
     info!("stm32h7xx-hal example - Blinky");
     info!("");
-    
+
     let gpioi = dp.GPIOI.split(ccdr.peripheral.GPIOI); // <= GPIO settings for LEDs
-    
+
     // Configure gpio pins as output.
     let mut led1 = gpioi.pi12.into_push_pull_output(); // PI12 for LED1
     let mut led2 = gpioi.pi13.into_push_pull_output(); // PI13 for LED2
     let mut led3 = gpioi.pi14.into_push_pull_output(); // PI14 for LED3
     let mut led4 = gpioi.pi15.into_push_pull_output(); // PI15 for LED4
-    
+
     // Get the delay provider.
     let mut delay = cp.SYST.delay(ccdr.clocks);
-    
+
     loop {
         loop {
             led1.set_high();
             led2.set_low();
             led3.set_high();
             led4.set_low();
             delay.delay_ms(500_u16);
-            
+
             led1.set_low();
             led2.set_high();
             led3.set_low();