fix: reduce warning

examples/ethernet.rs

@@ -7,7 +7,6 @@ use core::sync::atomic::{AtomicU32, Ordering};
 extern crate log;
 
 use cortex_m;
-use cortex_m::asm::nop;
 use cortex_m_rt::{
     entry,
     exception,
@@ -15,14 +14,9 @@ use cortex_m_rt::{
 extern crate smoltcp;
 
 use stm32h7xx_hal::ethernet;
-use stm32h7xx_hal::gpio::Speed;
-use stm32h7xx_hal::hal::digital::v2::{
-    OutputPin,
-    InputPin,
-};
+use stm32h7xx_hal::hal::digital::v2::InputPin;
 use stm32h7xx_hal::rcc::CoreClocks;
 use stm32h7xx_hal::{pac, prelude::*, spi, stm32, stm32::interrupt};
-use Speed::*;
 
 use core::{
     str,
@@ -32,8 +26,8 @@ use core::mem::uninitialized;
 
 // Exception: no phy::wait
 //use smoltcp::phy::wait as phy_wait;
-use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr, Ipv4Address};
-use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, Routes};
+use smoltcp::wire::{IpAddress, IpCidr};
+use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder};
 use smoltcp::socket::SocketSet;
 use smoltcp::socket::{SocketHandle, TcpSocket, TcpSocketBuffer};
 use smoltcp::time::{Duration, Instant};
@@ -44,16 +38,6 @@ use embedded_nal::TcpStack;
 
 use firmware;
 use firmware::{
-	attenuator::Attenuator,
-	config_register::{
-		ConfigRegister,
-		CFGMask,
-		StatusMask,
-	},
-	dds::{
-		DDS,
-		DDSCFRMask,
-	},
 	cpld::{
 		CPLD,
     },
@@ -63,6 +47,10 @@ use firmware::{
         Channel1SwitchCommand,
         Channel2SwitchCommand,
         Channel3SwitchCommand,
+        Channel0AttenuationCommand,
+        Channel1AttenuationCommand,
+        Channel2AttenuationCommand,
+        Channel3AttenuationCommand,
         ClockSourceCommand,
         ClockDivisionCommand,
     },
@@ -83,9 +71,6 @@ use scpi::{
     ieee488_stb,
     ieee488_tst,
     ieee488_wai,
-    nquery,
-    //Helpers
-    qonly,
     scpi_crate_version,
     scpi_status,
     scpi_system,
@@ -290,16 +275,20 @@ fn main() -> ! {
             }
         },
         "CHANNEL0" => {
-            "SWitch" => Channel0SwitchCommand
+            "SWitch" => Channel0SwitchCommand,
+            "Attenuation" => Channel0AttenuationCommand
         },
         "CHANNEL1" => {
-            "SWitch" => Channel1SwitchCommand
+            "SWitch" => Channel1SwitchCommand,
+            "Attenuation" => Channel1AttenuationCommand
         },
         "CHANNEL2" => {
-            "SWitch" => Channel2SwitchCommand
+            "SWitch" => Channel2SwitchCommand,
+            "Attenuation" => Channel2AttenuationCommand
         },
         "CHANNEL3" => {
-            "SWitch" => Channel3SwitchCommand
+            "SWitch" => Channel3SwitchCommand,
+            "Attenuation" => Channel3AttenuationCommand
         },
         "CLOCK" => {
             "SOURCE" => ClockSourceCommand,
@@ -364,7 +353,7 @@ fn main() -> ! {
 		    }
 
 		    if socket.can_recv() {
-                let mut data = socket.recv(|buffer| {
+                let data = socket.recv(|buffer| {
                     (buffer.len(), buffer)
                 }).unwrap();
                 if str::from_utf8(data).unwrap().trim() == "quit" {
@@ -394,6 +383,7 @@ use stm32h7xx_hal::gpio::{
 /*
  *  Migrated ethernet setup pins
  */
+#[allow(non_camel_case_types)]
 pub fn setup_ethernet_pins<REF_CLK, MDIO, MDC, CRS_DV, RXD0, RXD1, TX_EN, TXD0, TXD1>(
     pa1: PA1<REF_CLK>, pa2: PA2<MDIO>, pc1: PC1<MDC>, pa7: PA7<CRS_DV>, pc4: PC4<RXD0>,
     pc5: PC5<RXD1>, pg11: PG11<TX_EN>, pg13: PG13<TXD0>, pb13: PB13<TXD1>

src/attenuator.rs

@@ -40,20 +40,16 @@ where
 		}
 		let mut clone = self.data.clone();
 		// Transmit SPI once to set attenuation
-		match self.spi.transfer(&mut clone).map_err(Error::SPI) {
-			Err(e) => Err(Error::AttenuatorError),
-			Ok(_) => Ok(()),
-		}
+		self.spi.transfer(&mut clone)
+						.map(|_| ())
+						.map_err(|_| Error::AttenuatorError)
 	}
 
 	pub fn set_channel_attenuation(&mut self, channel: u8, attenuation: f32) -> Result<(), Error<E>> {
 		assert!(channel < 4);
 		let mut arr: [f32; 4] = self.get_attenuation()?;
 		arr[channel as usize] = attenuation;
-		match self.set_attenuation(arr) {
-			Ok(v) => Ok(()),
-			Err(e) => Err(e)
-		}
+		self.set_attenuation(arr).map(|_| ())
 	}
 
 	pub fn get_channel_attenuation(&mut self, channel: u8) -> Result<f32, Error<E>> {

src/bitmask_macro.rs

@@ -9,6 +9,7 @@
 macro_rules! construct_bitmask {
 	($collection: ident; $unsigned_type: ty; $($name: ident, $shift: expr, $width: expr),+) => {
 		#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+		#[allow(non_camel_case_types)]
 		pub enum $collection {
 			$(
 				$name,

src/dds.rs

@@ -213,6 +213,7 @@ where
 		}
 	}
 
+	#[allow(non_snake_case)]
 	fn get_VCO_no(&mut self, f_sys_clk: u64, divider: u8) -> Result<u8, Error<E>> {
 		// Select a VCO
 		if divider == 1 {
@@ -387,10 +388,9 @@ macro_rules! impl_register_io {
 							for i in 0..$reg_byte_size {
 								arr[i+1] = bytes[i];
 							}
-							match self.spi.transfer(&mut arr).map_err(Error::SPI) {
-								Ok(v) => Ok(()),
-								Err(e) => Err(e),
-							}
+							self.spi.transfer(&mut arr)
+									.map(|_| ())
+									.map_err(Error::SPI)
 						},
 					)*
 					_ => panic!("Bad address for DDS writing.")

src/lib.rs

@@ -153,6 +153,7 @@ pub trait UrukulTraits {
 	fn set_channel_switch(&mut self, channel: u32, status: bool) -> Result<(), Self::Error>;
 	fn set_clock_source(&mut self, source: ClockSource) -> Result<(), Self::Error>;
 	fn set_clock_division(&mut self, division: u8) -> Result<(), Self::Error>;
+	fn set_channel_attenuation(&mut self, channel: u8, attenuation: f32) -> Result<(), Self::Error>;
 }
 
 impl<SPI, E> UrukulTraits for Urukul<SPI>
@@ -163,10 +164,7 @@ where
 
 	fn get_channel_switch_status(&mut self, channel: u32) -> Result<bool, Self::Error> {
 		if channel < 4 {
-			match self.config_register.get_status(StatusMask::RF_SW) {
-				Ok(val) => Ok((val & (1 << channel)) != 0),
-				Err(_e) => Err(_e),
-			}
+			self.config_register.get_status(StatusMask::RF_SW).map(|val| (val & (1 << channel)) != 0)
 		} else {
 			Err(Error::ParameterError)
 		}
@@ -182,19 +180,16 @@ where
 					prev & (!(1 << channel))
 				}
 			};
-			match self.config_register.set_configurations(&mut [
+			self.config_register.set_configurations(&mut [
 				(CFGMask::RF_SW, next),
-			]) {
-				Ok(_) => Ok(()),
-				Err(_e) => Err(_e),
-			}
+			]).map(|_| ())
 		} else {
 			Err(Error::ParameterError)
 		}
 	}
 
 	fn set_clock_source(&mut self, source: ClockSource) -> Result<(), Self::Error> {
-		let result = match source {
+		match source {
 			ClockSource::OSC => self.config_register.set_configurations(&mut [
 				(CFGMask::CLK_SEL0, 0),
 				(CFGMask::CLK_SEL1, 0),
@@ -206,15 +201,11 @@ where
 			ClockSource::SMA => self.config_register.set_configurations(&mut [
 				(CFGMask::CLK_SEL0, 1),
 			]),
-		};
-		match result {
-			Ok(_) => Ok(()),
-			Err(_e) => Err(_e),
-		}
+		}.map(|_| ())
 	}
 
 	fn set_clock_division(&mut self, division: u8) -> Result<(), Self::Error> {
-		let result = match division {
+		match division {
 			1 => self.config_register.set_configurations(&mut [
 				(CFGMask::DIV, 1),
 			]),
@@ -225,10 +216,10 @@ where
 				(CFGMask::DIV, 3),
 			]),
 			_ => Err(Error::ParameterError),
-		};
-		match result {
-			Ok(_) => Ok(()),
-			Err(_e) => Err(_e),
-		}
+		}.map(|_| ())
 	}
-}
+
+	fn set_channel_attenuation(&mut self, channel: u8, attenuation: f32) -> Result<(), Self::Error> {
+		self.attenuator.set_channel_attenuation(channel, attenuation)
+	}
+}

src/main.rs

@@ -1,7 +1,10 @@
 #![no_main]
 #![no_std]
 
-use panic_semihosting as _;
+#[macro_use]
+extern crate log;
+
+use log::{trace, debug, info, warn};
 
 use stm32h7xx_hal::hal::digital::v2::{
 	InputPin,
@@ -11,7 +14,6 @@ use stm32h7xx_hal::{pac, prelude::*, spi};
 
 use cortex_m;
 use cortex_m_rt::entry;
-use cortex_m_semihosting::hprintln;
 
 use firmware;
 use firmware::{
@@ -30,10 +32,13 @@ use firmware::{
 	}
 };
 
+#[path = "../examples/util/logger.rs"]
+mod logger;
+
 #[entry]
 fn main() -> ! {
 
-	let cp = cortex_m::Peripherals::take().unwrap();
+	let mut cp = cortex_m::Peripherals::take().unwrap();
 	let dp = pac::Peripherals::take().unwrap();
 
 	let pwr = dp.PWR.constrain();
@@ -41,9 +46,16 @@ fn main() -> ! {
 
 	let rcc = dp.RCC.constrain();
 	let ccdr = rcc
+		.use_hse(8.mhz())
 		.sys_ck(400.mhz())
 		.pll1_q_ck(48.mhz())
+		.pll1_r_ck(400.mhz())
 		.freeze(vos, &dp.SYSCFG);
+
+	unsafe {
+		logger::enable_itm(&dp.DBGMCU, &mut cp.DCB, &mut cp.ITM);
+	}
+	logger::init();
 	
 	let mut delay = cp.SYST.delay(ccdr.clocks);
 
@@ -58,10 +70,10 @@ fn main() -> ! {
 	let fpga_cdone = gpiod.pd15.into_pull_up_input();
 
 	match fpga_cdone.is_high() {
-		Ok(true)	=> hprintln!("FPGA is ready."),
-		Ok(_)		=> hprintln!("FPGA is in reset state."),
-		Err(_)		=> hprintln!("Error: Cannot read C_DONE"),
-	}.unwrap();
+		Ok(true)	=> info!("FPGA is ready."),
+		Ok(_)		=> info!("FPGA is in reset state."),
+		Err(_)		=> info!("Error: Cannot read C_DONE"),
+	};
 
 	/*
 	 *	Using SPI1, AF5
@@ -150,10 +162,10 @@ fn main() -> ! {
 		0x04,			// Recirculate mode
 	]).unwrap();
 
-	hprintln!("{:#X?}", dds0.read_register(0x0E, &mut[
+	debug!("{:#X?}", dds0.read_register(0x0E, &mut[
 		0x00, 0x00, 0x00, 0x00,
 		0x00, 0x00, 0x00, 0x00,
-	]).unwrap()).unwrap();
+	]).unwrap());
 
 	// Choose profile 0
 	config.set_configurations(&mut [

src/nal_tcp_client.rs

@@ -60,15 +60,10 @@ impl<'a, 'b, 'c, 'n> NetworkStack<'a, 'b, 'c, 'n> {
     }
 
     pub fn update(&mut self, time: u32) -> bool {
-        match self.network_interface.poll(
+        self.network_interface.poll(
             &mut self.sockets.borrow_mut(),
             net::time::Instant::from_millis(time as i64),
-        ) {
-            Ok(changed) => changed == false,
-            Err(e) => {
-                true
-            }
-        }
+        ).map_or(true, |changed| changed == false)
     }
 
     fn get_ephemeral_port(&self) -> u16 {

src/scpi.rs

@@ -7,26 +7,9 @@ use scpi::NumericValues;
 
 use core::convert::{TryFrom, TryInto};
 use core::str;
-use core::str::Utf8Error;
-use scpi::ieee488::commands::*;
-use scpi::scpi::commands::*;
 use scpi::{
-    ieee488_cls,
-    ieee488_ese,
-    ieee488_esr,
-    ieee488_idn,
-    ieee488_opc,
-    ieee488_rst,
-    ieee488_sre,
-    ieee488_stb,
-    ieee488_tst,
-    ieee488_wai,
     nquery,
-    //Helpers
     qonly,
-    scpi_crate_version,
-    scpi_status,
-    scpi_system,
 };
 use scpi::suffix::{Amplitude, Db};
 use uom::si::frequency::{gigahertz, hertz, kilohertz, megahertz, Frequency};
@@ -147,6 +130,10 @@ pub struct Channel2SwitchCommand {}
 pub struct Channel3SwitchCommand {}
 pub struct ClockSourceCommand {}
 pub struct ClockDivisionCommand {}
+pub struct Channel0AttenuationCommand {}
+pub struct Channel1AttenuationCommand {}
+pub struct Channel2AttenuationCommand {}
+pub struct Channel3AttenuationCommand {}
 
 impl<T: Device + UrukulTraits> Command<T> for Channel0SwitchCommand {
     nquery!();
@@ -270,17 +257,68 @@ impl<T:Device + UrukulTraits> Command<T> for ClockDivisionCommand {
                                 .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
                                         |token| token.try_into())?;
         trace!("Received master clock division factor: {}", div);
-        match div {
-            1.0 | 2.0 | 4.0 => {
-                debug!("Set master clock division as {}", div);
-                context.device.set_clock_division(div as u8)
-                                .map_err(|_| Error::new(ErrorCode::HardwareError))
-            }
-            _ => Err(Error::new(ErrorCode::IllegalParameterValue)),
+        if div == 1.0 || div == 2.0 || div == 4.0 {
+            debug!("Set master clock division as {}", div);
+            context.device.set_clock_division(div as u8)
+                            .map_err(|_| Error::new(ErrorCode::HardwareError))
+        } else {
+            Err(Error::new(ErrorCode::IllegalParameterValue))
         }
     }
 }
 
+impl<T:Device + UrukulTraits> Command<T> for Channel0AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 0 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(0, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel1AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 1 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(1, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel2AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 2 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(2, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
+impl<T:Device + UrukulTraits> Command<T> for Channel3AttenuationCommand {
+    nquery!();
+
+    fn event(&self, context: &mut Context<T>, args: &mut Tokenizer) -> Result<()> {
+        let attenuation: f32 = args.next_data(false)?
+                                    .map_or(Err(Error::new(ErrorCode::IllegalParameterValue)),
+                                            |token| token.try_into())?;
+        trace!("Received channel 3 attenuation input: {}", attenuation);
+        context.device.set_channel_attenuation(3, attenuation)
+                        .map_err(|_| Error::new(ErrorCode::HardwareError))
+    }
+}
+
 /*
  *  Implement "Device" trait from SCPI
  *  TODO: Implement mandatory commands

src/spi_slave.rs

@@ -51,13 +51,13 @@ where
 
 	fn transfer<'w>(&mut self, words: &'w mut[u8]) -> Result<&'w [u8], Self::Error> {
 		self.0.do_on_get_ref_mut_data(move |mut dev| {
-			dev.select_chip(self.1);
-			let result = dev.spi.transfer(words).map_err(Error::SPI);
-			dev.select_chip(0);
+			dev.select_chip(self.1).map_err(|_| Error::CSError)?;
+			let result = dev.spi.transfer(words).map_err(Error::SPI)?;
+			dev.select_chip(0).map_err(|_| Error::CSError)?;
 			if self.2 {
-				dev.issue_io_update();
+				dev.issue_io_update().map_err(|_| Error::IOUpdateError)?;
 			}
-			result
+			Ok(result)
 		})	
 	}
 }