diff --git a/ad9959/src/lib.rs b/ad9959/src/lib.rs
index 6fdcefd..d12041c 100644
--- a/ad9959/src/lib.rs
+++ b/ad9959/src/lib.rs
@@ -571,59 +571,4 @@ where
         Ok(tuning_word as f64 * self.system_clock_frequency()
             / (1u64 << 32) as f64)
     }
-
-    pub fn write_profile(
-        &mut self,
-        channel: Channel,
-        freq: f64,
-        turns: f32,
-    ) -> Result<(), Error> {
-        // The function for channel frequency is `f_out = FTW * f_s / 2^32`, where FTW is the
-        // frequency tuning word and f_s is the system clock rate.
-        let tuning_word: u32 = ((freq as f64 / self.system_clock_frequency())
-            * 1u64.wrapping_shl(32) as f64)
-            as u32;
-
-        let phase_offset: u16 = (turns * (1 << 14) as f32) as u16 & 0x3FFFu16;
-
-        self.modify_channel_closure(channel, |interface| {
-            let mut data: [u8; 7] = [0; 7];
-            data[0..2].copy_from_slice(&phase_offset.to_be_bytes());
-            data[3] = Register::CFTW0 as u8;
-            data[4..7].copy_from_slice(&tuning_word.to_be_bytes());
-            interface
-                .write(Register::CPOW0 as u8, &data)
-                .map_err(|_| Error::Interface)
-        })?;
-
-        Ok(())
-    }
-
-    fn modify_channel_closure<F>(
-        &mut self,
-        channel: Channel,
-        f: F,
-    ) -> Result<(), Error>
-    where
-        F: FnOnce(&mut INTERFACE) -> Result<(), Error>,
-    {
-        // Disable all other outputs so that we can update the configuration register of only the
-        // specified channel.
-        let mut csr: [u8; 1] = [0];
-        self.interface
-            .read(Register::CSR as u8, &mut csr)
-            .map_err(|_| Error::Interface)?;
-
-        let mut new_csr = csr;
-        new_csr[0].set_bits(4..8, 0);
-        new_csr[0].set_bit(4 + channel as usize, true);
-
-        let result = f(&mut self.interface);
-
-        self.interface
-            .write(Register::CSR as u8, &new_csr)
-            .map_err(|_| Error::Interface)?;
-
-        result
-    }
 }
diff --git a/src/main.rs b/src/main.rs
index 61dcb7e..2b0e240 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -626,10 +626,10 @@ const APP: () = {
         // Configure ethernet pins.
         {
             // Reset the PHY before configuring pins.
-            //let mut eth_phy_nrst = gpioe.pe3.into_push_pull_output();
-            //eth_phy_nrst.set_low().unwrap();
-            //delay.delay_ms(200u8);
-            //eth_phy_nrst.set_high().unwrap();
+            let mut eth_phy_nrst = gpioe.pe3.into_push_pull_output();
+            eth_phy_nrst.set_low().unwrap();
+            delay.delay_us(200u8);
+            eth_phy_nrst.set_high().unwrap();
             let _rmii_ref_clk = gpioa
                 .pa1
                 .into_alternate_af11()
diff --git a/src/pounder/mod.rs b/src/pounder/mod.rs
index 032b209..1288765 100644
--- a/src/pounder/mod.rs
+++ b/src/pounder/mod.rs
@@ -235,7 +235,7 @@ pub struct PounderDevices<DELAY> {
         hal::gpio::gpiog::PG7<hal::gpio::Output<hal::gpio::PushPull>>,
     >,
     mcp23017: mcp23017::MCP23017<hal::i2c::I2c<hal::stm32::I2C1>>,
-    attenuator_spi: hal::spi::Spi<hal::stm32::SPI1, hal::spi::Enabled, u8>,
+    attenuator_spi: hal::spi::Spi<hal::stm32::SPI1>,
     adc1: hal::adc::Adc<hal::stm32::ADC1, hal::adc::Enabled>,
     adc2: hal::adc::Adc<hal::stm32::ADC2, hal::adc::Enabled>,
     adc1_in_p: hal::gpio::gpiof::PF11<hal::gpio::Analog>,
@@ -262,7 +262,7 @@ where
             DELAY,
             hal::gpio::gpiog::PG7<hal::gpio::Output<hal::gpio::PushPull>>,
         >,
-        attenuator_spi: hal::spi::Spi<hal::stm32::SPI1, hal::spi::Enabled, u8>,
+        attenuator_spi: hal::spi::Spi<hal::stm32::SPI1>,
         adc1: hal::adc::Adc<hal::stm32::ADC1, hal::adc::Enabled>,
         adc2: hal::adc::Adc<hal::stm32::ADC2, hal::adc::Enabled>,
         adc1_in_p: hal::gpio::gpiof::PF11<hal::gpio::Analog>,
@@ -475,11 +475,10 @@ where
         state: ChannelState,
     ) -> Result<(), Error> {
         self.ad9959
-            .write_profile(
-                channel.into(),
-                state.parameters.frequency,
-                state.parameters.phase_offset,
-            )
+            .set_frequency(channel.into(), state.parameters.frequency)
+            .map_err(|_| Error::Dds)?;
+        self.ad9959
+            .set_phase(channel.into(), state.parameters.phase_offset)
             .map_err(|_| Error::Dds)?;
         self.ad9959
             .set_amplitude(channel.into(), state.parameters.amplitude)