Fix clippy lints

Signed-off-by: Daniel Egger <daniel@eggers-club.de>

src/i2c.rs

@@ -64,9 +64,9 @@ impl Mode {
     }
 
     pub fn get_frequency(&self) -> Hertz {
-        match self {
-            &Mode::Standard { frequency } => frequency,
-            &Mode::Fast { frequency, .. } => frequency,
+        match *self {
+            Mode::Standard { frequency } => frequency,
+            Mode::Fast { frequency, .. } => frequency,
         }
     }
 }
@@ -211,13 +211,13 @@ fn blocking_i2c<I2C, PINS>(
     data_timeout_us: u32,
 ) -> BlockingI2c<I2C, PINS> {
     let sysclk_mhz = clocks.sysclk().0 / 1_000_000;
-    return BlockingI2c {
+    BlockingI2c {
         nb: i2c,
         start_timeout: start_timeout_us * sysclk_mhz,
         start_retries,
         addr_timeout: addr_timeout_us * sysclk_mhz,
         data_timeout: data_timeout_us * sysclk_mhz,
-    };
+    }
 }
 
 macro_rules! wait_for_flag {
@@ -317,8 +317,8 @@ macro_rules! hal {
 
                             self.i2c.ccr.write(|w| {
                                 let (freq, duty) = match duty_cycle {
-                                    &DutyCycle::Ratio2to1 => (((self.pclk1 / (freq.0* 3)) as u16).max(1), false),
-                                    &DutyCycle::Ratio16to9 => (((self.pclk1 / (freq.0 * 25)) as u16).max(1), true)
+                                    DutyCycle::Ratio2to1 => (((self.pclk1 / (freq.0* 3)) as u16).max(1), false),
+                                    DutyCycle::Ratio16to9 => (((self.pclk1 / (freq.0 * 25)) as u16).max(1), true)
                                 };
 
                                 unsafe {
@@ -403,7 +403,7 @@ macro_rules! hal {
                     while retries_left > 0 {
                         self.nb.send_start();
                         last_ret = busy_wait_cycles!(self.nb.wait_after_sent_start(), self.start_timeout);
-                        if let Err(_) = last_ret {
+                        if last_ret.is_err() {
                             self.nb.reset();
                         } else {
                             break;

src/pwm_input.rs

@@ -249,9 +249,8 @@ macro_rules! hal {
             {
                 /// Return the frequency sampled by the timer
                 pub fn read_frequency(&self, mode : ReadMode, clocks : &Clocks) -> Result<Hertz,Error> {
-                    match mode {
-                        ReadMode::WaitForNextCapture => self.wait_for_capture(),
-                        _ => (),
+                    if let ReadMode::WaitForNextCapture = mode {
+                        self.wait_for_capture();
                     }
 
                     let presc = unsafe { (*$TIMX::ptr()).psc.read().bits() as u16};
@@ -281,9 +280,8 @@ macro_rules! hal {
 
                 /// Return the duty in the form of a fraction : (duty_cycle/period)
                 pub fn read_duty(&self, mode : ReadMode) -> Result<(u16,u16),Error> {
-                    match mode {
-                        ReadMode::WaitForNextCapture => self.wait_for_capture(),
-                        _ => (),
+                    if let ReadMode::WaitForNextCapture = mode {
+                        self.wait_for_capture();
                     }
 
                     // Formulas :

src/rcc.rs

@@ -296,7 +296,7 @@ impl CFGR {
                 w.pllmul()
                     .bits(pllmul_bits)
                     .pllsrc()
-                    .bit(if self.hse.is_some() { true } else { false })
+                    .bit(self.hse.is_some())
             });
 
             rcc.cr.modify(|_, w| w.pllon().set_bit());

src/rtc.rs

@@ -18,7 +18,6 @@ use crate::backup_domain::BackupDomain;
 use crate::time::Hertz;
 
 use core::convert::Infallible;
-use nb;
 
 // The LSE runs at at 32 768 hertz unless an external clock is provided
 const LSE_HERTZ: u32 = 32_768;
@@ -143,7 +142,7 @@ impl Rtc {
     /// Reads the current counter
     pub fn current_time(&self) -> u32 {
         // Wait for the APB1 interface to be ready
-        while self.regs.crl.read().rsf().bit() == false {}
+        while !self.regs.crl.read().rsf().bit() {}
 
         self.regs.cnth.read().bits() << 16 | self.regs.cntl.read().bits()
     }
@@ -180,7 +179,7 @@ impl Rtc {
       ```
     */
     pub fn wait_alarm(&mut self) -> nb::Result<(), Infallible> {
-        if self.regs.crl.read().alrf().bit() == true {
+        if self.regs.crl.read().alrf().bit() {
             self.regs.crl.modify(|_, w| w.alrf().clear_bit());
             Ok(())
         } else {
@@ -195,7 +194,7 @@ impl Rtc {
     */
     fn perform_write(&mut self, func: impl Fn(&mut Self)) {
         // Wait for the last write operation to be done
-        while self.regs.crl.read().rtoff().bit() == false {}
+        while !self.regs.crl.read().rtoff().bit() {}
         // Put the clock into config mode
         self.regs.crl.modify(|_, w| w.cnf().set_bit());
 

src/serial.rs

@@ -45,7 +45,6 @@ use core::sync::atomic::{self, Ordering};
 use crate::pac::{USART1, USART2, USART3};
 use core::convert::Infallible;
 use embedded_hal::serial::Write;
-use nb;
 
 use crate::afio::MAPR;
 use crate::dma::{dma1, CircBuffer, RxDma, Static, Transfer, TxDma, R, W};

src/spi.rs

@@ -33,8 +33,6 @@
 use core::ops::Deref;
 use core::ptr;
 
-use nb;
-
 pub use crate::hal::spi::{FullDuplex, Mode, Phase, Polarity};
 #[cfg(feature = "high")]
 use crate::pac::SPI3;

src/time.rs

@@ -246,12 +246,12 @@ impl MonoTimer {
     }
 
     /// Returns the frequency at which the monotonic timer is operating at
-    pub fn frequency(&self) -> Hertz {
+    pub fn frequency(self) -> Hertz {
         self.frequency
     }
 
     /// Returns an `Instant` corresponding to "now"
-    pub fn now(&self) -> Instant {
+    pub fn now(self) -> Instant {
         Instant {
             now: DWT::get_cycle_count(),
         }
@@ -266,7 +266,7 @@ pub struct Instant {
 
 impl Instant {
     /// Ticks elapsed since the `Instant` was created
-    pub fn elapsed(&self) -> u32 {
+    pub fn elapsed(self) -> u32 {
         DWT::get_cycle_count().wrapping_sub(self.now)
     }
 }

src/timer.rs

@@ -74,7 +74,6 @@ use crate::rcc::{sealed::RccBus, Clocks, Enable, GetBusFreq, Reset};
 use cast::{u16, u32, u64};
 use cortex_m::peripheral::syst::SystClkSource;
 use cortex_m::peripheral::SYST;
-use nb;
 use void::Void;
 
 use crate::time::Hertz;