style: implement a couple clippy suggestions [nfc]

ad9959/src/lib.rs

@@ -120,9 +120,9 @@ where
         RST: OutputPin,
     {
         let mut ad9959 = Ad9959 {
-            interface: interface,
-            io_update: io_update,
-            delay: delay,
+            interface,
+            io_update,
+            delay,
             reference_clock_frequency: clock_frequency,
             system_clock_multiplier: 1,
         };

src/afe.rs

@@ -1,4 +1,3 @@
-use embedded_hal;
 use serde::{Deserialize, Serialize};
 
 use core::convert::TryFrom;
@@ -45,7 +44,7 @@ where
     /// * `a0` - An output connected to the A0 input of the amplifier.
     /// * `a1` - An output connected to the A1 input of the amplifier.
     pub fn new(a0: A0, a1: A1) -> Self {
-        let mut afe = Self { a0: a0, a1: a1 };
+        let mut afe = Self { a0, a1 };
 
         afe.set_gain(Gain::G1);
 

src/main.rs

@@ -28,8 +28,6 @@ extern crate panic_halt;
 extern crate log;
 
 // use core::sync::atomic::{AtomicU32, AtomicBool, Ordering};
-use asm_delay;
-use cortex_m;
 use cortex_m_rt::exception;
 use rtic::cyccnt::{Instant, U32Ext};
 use stm32h7xx_hal as hal;
@@ -331,13 +329,12 @@ const APP: () = {
             .frame_size(16)
             .swap_mosi_miso();
 
-            let spi = dp.SPI4.spi(
+            dp.SPI4.spi(
                 (spi_sck, spi_miso, hal::spi::NoMosi),
                 config,
                 50.mhz(),
                 &clocks,
-            );
-            spi
+            )
         };
 
         let dac2_spi = {
@@ -361,14 +358,12 @@ const APP: () = {
             .frame_size(16)
             .swap_mosi_miso();
 
-            let spi = dp.SPI5.spi(
+            dp.SPI5.spi(
                 (spi_sck, spi_miso, hal::spi::NoMosi),
                 config,
                 50.mhz(),
                 &clocks,
-            );
-
-            spi
+            )
         };
 
         let mut fp_led_0 = gpiod.pd5.into_push_pull_output();
@@ -635,16 +630,16 @@ const APP: () = {
             dac1: dac1_spi,
             adc2: adc2_spi,
             dac2: dac2_spi,
-            afe1: afe1,
-            afe2: afe2,
+            afe1,
+            afe2,
 
             timer: timer2,
             pounder: pounder_devices,
 
-            eeprom_i2c: eeprom_i2c,
+            eeprom_i2c,
             net_interface: network_interface,
-            eth_mac: eth_mac,
-            mac_addr: mac_addr,
+            eth_mac,
+            mac_addr,
         }
     }
 

src/pounder/mod.rs

@@ -1,6 +1,3 @@
-use ad9959;
-use mcp23017;
-
 use serde::{Deserialize, Serialize};
 
 mod attenuators;
@@ -106,7 +103,7 @@ impl QspiInterface {
         qspi.configure_mode(hal::qspi::QspiMode::FourBit)
             .map_err(|_| Error::Qspi)?;
         Ok(Self {
-            qspi: qspi,
+            qspi,
             mode: ad9959::Mode::SingleBitTwoWire,
         })
     }
@@ -396,8 +393,8 @@ where
                 let power = self.measure_power(channel)?;
 
                 Ok(InputChannelState {
-                    attenuation: attenuation,
-                    power: power,
+                    attenuation,
+                    power,
                     mixer: channel_state,
                 })
             }
@@ -458,7 +455,7 @@ where
                 let attenuation = self.get_attenuation(channel)?;
 
                 Ok(OutputChannelState {
-                    attenuation: attenuation,
+                    attenuation,
                     channel: channel_state,
                 })
             }

src/server.rs

@@ -125,7 +125,7 @@ impl Response {
     /// * `message` - The message denoting the status.
     pub fn custom<'a>(code: i32, message: &'a str) -> Self {
         let mut res = Self {
-            code: code,
+            code,
             attribute: String::from(""),
             value: String::from(message),
         };