Show periods per DFT in GUI.

src/app.rs

@@ -47,6 +47,7 @@ pub struct App {
     pub data_frequency: Arc<AtomicF32>,
     pub single_frequency: Arc<Mutex<u32>>,
     pub dft_num: Arc<Mutex<IcdDftNum>>,
+    pub periods_per_dft: Arc<Mutex<Option<f32>>>,
 }
 
 struct TabViewer {
@@ -58,6 +59,7 @@ struct TabViewer {
     on: Arc<Mutex<bool>>,
     single_frequency: Arc<Mutex<u32>>,
     dft_num: Arc<Mutex<IcdDftNum>>,
+    periods_per_dft: Arc<Mutex<Option<f32>>>,
     show_settings: bool,
     show_settings_toggle: Option<bool>,
 }
@@ -93,6 +95,22 @@ impl TabViewer {
                             };
                         });
                     });
+                    ui.add_enabled_ui(*on, |ui| {
+                        ui.horizontal(|ui| {
+                            ui.label("Periods per DFT:");
+                            match (*on, *self.periods_per_dft.lock().unwrap()) {
+                                (true, Some(periods)) => {
+                                    ui.add(Label::new(format!("{:.2}", periods)));
+                                },
+                                (true, None) => {
+                                    ui.add(Label::new("N/A"));
+                                },
+                                (false, _) => {
+                                    ui.add(Label::new("Start to determine!"));
+                                }
+                            }
+                        });
+                    });
                 }
             });
 
@@ -337,6 +355,7 @@ impl App {
         let bode_plot = Arc::new(Mutex::new(BodePlot::new()));
         let single_frequency = Arc::new(Mutex::new(50000));
         let dft_num = Arc::new(Mutex::new(IcdDftNum::Num2048));
+        let periods_per_dft = Arc::new(Mutex::new(None));
         let on = Arc::new(Mutex::new(true));
         let tab_active = TabActive::Single;
 
@@ -349,6 +368,7 @@ impl App {
             bode_plot: bode_plot.clone(),
             single_frequency: single_frequency.clone(),
             dft_num: dft_num.clone(),
+            periods_per_dft: periods_per_dft.clone(),
             on: on.clone(),
             show_settings: false,
             show_settings_toggle: None,
@@ -370,6 +390,7 @@ impl App {
             data_frequency: Arc::new(AtomicF32::new(0.0)),
             single_frequency,
             dft_num,
+            periods_per_dft,
         };
 
         // For testing purposes, populate the Bode plot with a sample low-pass filter response

src/bin/main_gui.rs

@@ -33,6 +33,8 @@ fn main() {
 
     let data_frequency_clone = app.data_frequency.clone();
 
+    let periods_per_dft = app.periods_per_dft.clone();
+
     // Execute the runtime in its own thread.
     std::thread::spawn(move || {
         rt.block_on(communicate_with_hardware(
@@ -45,6 +47,7 @@ fn main() {
             bode_clone,
             connected_clone,
             data_frequency_clone,
+            periods_per_dft,
         ));
     });
 

src/client.rs

@@ -5,7 +5,7 @@ use postcard_rpc::{
 };
 use std::convert::Infallible;
 use bioz_icd_rs::{
-    GetUniqueIdEndpoint, PingEndpoint, SetGreenLedEndpoint, StartMultiImpedance, StartMultiImpedanceEndpoint, StartSingleImpedance, StartSingleImpedanceEndpoint, StopSingleImpedanceEndpoint
+    GetUniqueIdEndpoint, InitImpedanceResult, PingEndpoint, SetGreenLedEndpoint, StartMultiImpedance, StartMultiImpedanceEndpoint, StartSingleImpedance, StartSingleImpedanceEndpoint, StopSingleImpedanceEndpoint
 };
 
 use crate::icd::{IcdDftNum, NumberOfPoints};
@@ -66,11 +66,11 @@ impl WorkbookClient {
         &self,
         frequency: u32,
         dft_number: IcdDftNum,
-    ) -> Result<(), WorkbookError<Infallible>> {
+    ) -> Result<InitImpedanceResult, WorkbookError<Infallible>> {
-        self.client
+        let response = self.client
             .send_resp::<StartSingleImpedanceEndpoint>(&StartSingleImpedance { update_frequency: 60, sinus_frequency: frequency, dft_number})
             .await?;
-        Ok(())
+        Ok(response)
     }
 
     pub async fn start_impedancemeter_multi(

src/communication.rs

@@ -25,6 +25,7 @@ pub async fn communicate_with_hardware(
     bode_series: Arc<Mutex<BodePlot>>,
     connected: Arc<AtomicBool>,
     data_frequency: Arc<AtomicF32>,
+    periods_per_dft: Arc<Mutex<Option<f32>>>,
 ) {
     let data_counter = Arc::new(AtomicU32::new(0));
     let data_counter_clone = data_counter.clone();
@@ -115,11 +116,20 @@ pub async fn communicate_with_hardware(
                 Some(frequency) = run_impedancemeter_rx.recv() => {
                     match frequency {                
                         StartStopSignal::StartSingle(freq, dft_num) => {
-                            if let Err(e) = workbook_client.start_impedancemeter_single(freq, dft_num).await {
+                            match workbook_client.start_impedancemeter_single(freq, dft_num).await {
-                                error!("Failed to start impedancemeter: {:?}", e);
+                                Ok(Ok(periods)) => {
-                            } else {
+                                    info!("Impedance meter started at frequency: {} with periods per DFT: {}", freq, periods);
-                                settings.frequency = Some(StartStopSignal::StartSingle(freq, dft_num));
+                                    settings.frequency = Some(StartStopSignal::StartSingle(freq, dft_num));
-                                info!("Impedancemeter started at frequency: {}", freq);
+                                    *periods_per_dft.lock().unwrap() = Some(periods);
+                                },
+                                Ok(Err(e)) => {
+                                    error!("Failed to init on hardware: {:?}", e);
+                                    *periods_per_dft.lock().unwrap() = None;
+                                },
+                                Err(e) => {
+                                    error!("Communication error when starting impedancemeter: {:?}", e);
+                                    *periods_per_dft.lock().unwrap() = None;
+                                }
                             }
                         },
                         StartStopSignal::StartMulti(dft_num, num_points) => {