Adding WIP QSPI streaming

Cargo.toml

@@ -59,9 +59,8 @@ features = ["stm32h743v"]
 
 [dependencies.stm32h7xx-hal]
 features = ["stm32h743v", "rt", "unproven"]
-
-[patch.crates-io]
-stm32h7xx-hal = { git = "https://github.com/quartiq/stm32h7xx-hal.git", branch = "feature/pounder-support" }
+git = "https://github.com/quartiq/stm32h7xx-hal.git"
+branch = "feature/pounder-support"
 
 [features]
 semihosting = ["panic-semihosting", "cortex-m-log/semihosting"]

ad9959/src/lib.rs

@@ -376,9 +376,6 @@ where
         // Latch the configuration and restore the previous CSR. Note that the re-enable of the
         // channel happens immediately, so the CSR update does not need to be latched.
         self.latch_configuration()?;
-        self.interface
-            .write(Register::CSR as u8, &csr)
-            .map_err(|_| Error::Interface)?;
 
         Ok(())
     }
@@ -571,4 +568,69 @@ 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, amplitude: 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;
+
+        let amplitude_control: u16 = (amplitude * (1 << 10) as f32) as u16;
+        let mut acr: [u8; 3] = [0; 3];
+
+        // Enable the amplitude multiplier for the channel if required. The amplitude control has
+        // full-scale at 0x3FF (amplitude of 1), so the multiplier should be disabled whenever
+        // full-scale is used.
+        if amplitude_control < (1 << 10) {
+            let masked_control = amplitude_control & 0x3FF;
+            acr[1] = masked_control.to_be_bytes()[0];
+            acr[2] = masked_control.to_be_bytes()[1];
+
+            // Enable the amplitude multiplier
+            acr[1].set_bit(4, true);
+        }
+
+        self.modify_channel_closure(channel, |interface| {
+            let mut data: [u8; 11] = [0; 11];
+            data[0..2].copy_from_slice(&phase_offset.to_be_bytes());
+            data[2] = Register::CFTW0 as u8;
+            data[3..7].copy_from_slice(&tuning_word.to_be_bytes());
+            data[7] = Register::ACR as u8;
+            data[8..11].copy_from_slice(&acr);
+            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);
+
+        self.interface
+            .write(Register::CSR as u8, &new_csr)
+            .map_err(|_| Error::Interface)?;
+
+        let result = f(&mut self.interface);
+
+        // Latch the configuration and restore the previous CSR. Note that the re-enable of the
+        // channel happens immediately, so the CSR update does not need to be latched.
+        self.latch_configuration()?;
+
+        result
+    }
 }

pounder_test.py

@@ -91,11 +91,11 @@ def main():
 
         # A sample configuration for an output channel.
         channel_config = {
-            'attenuation': 31.5,
+            'attenuation': 0.0,
             'parameters': {
                 'phase_offset': 0.5,
                 'frequency': 100.0e6,
-                'amplitude': 0.2,
+                'amplitude': 1.0,
                 'enabled': True,
             }
         }

src/main.rs

@@ -187,8 +187,7 @@ const APP: () = {
             'static,
             'static,
             'static,
-            ethernet::EthernetDMA<'static>,
-        >,
+            ethernet::EthernetDMA<'static>>,
         eth_mac: ethernet::EthernetMAC,
         mac_addr: net::wire::EthernetAddress,
 
@@ -654,7 +653,7 @@ const APP: () = {
         );
 
         // Configure timer 2 to trigger conversions for the ADC
-        let mut timer2 = dp.TIM2.timer(500.khz(), &mut clocks);
+        let mut timer2 = dp.TIM2.timer(50.khz(), &mut clocks);
         timer2.configure_channel(hal::timer::Channel::One, 0.25);
         timer2.configure_channel(hal::timer::Channel::Two, 0.75);
 
@@ -746,6 +745,35 @@ const APP: () = {
         // TODO: Replace with reference to CPU clock from CCDR.
         next_ms += 400_000.cycles();
 
+        match c.resources.pounder {
+            Some(pounder) => {
+
+                let state = pounder::ChannelState {
+                    parameters: pounder::DdsChannelState {
+                        phase_offset: 0.0,
+                        frequency: 100_000_000.0,
+                        amplitude: 1.0,
+                        enabled: true,
+                    },
+                    attenuation: 10.0,
+                };
+
+                let state1 = pounder::ChannelState {
+                    parameters: pounder::DdsChannelState {
+                        phase_offset: 0.5,
+                        frequency: 50_000_000.0,
+                        amplitude: 1.0,
+                        enabled: true,
+                    },
+                    attenuation: 10.0,
+                };
+
+                pounder.set_channel_state(pounder::Channel::Out0, state).unwrap();
+                pounder.set_channel_state(pounder::Channel::Out1, state1).unwrap();
+            },
+            _ => panic!("Failed"),
+        }
+
         loop {
             let tick = Instant::now() > next_ms;
 

src/pounder/mod.rs

@@ -474,15 +474,8 @@ where
         channel: Channel,
         state: ChannelState,
     ) -> Result<(), Error> {
-        self.ad9959
-            .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)
-            .map_err(|_| Error::Dds)?;
+        self.ad9959.write_profile(channel.into(), state.parameters.frequency,
+                state.parameters.phase_offset, state.parameters.amplitude).map_err(|_| Error::Dds)?;
 
         if state.parameters.enabled {
             self.ad9959