Added display task

Cargo.toml

@@ -9,7 +9,7 @@ cortex-m = { version = "0.7", features = ["critical-section-single-core"] }
 defmt = { version = "0.3", features = ["encoding-rzcobs"] }
 defmt-brtt = { version = "0.1", default-features = false, features = ["rtt"] }
 panic-probe = { version = "0.3", features = ["print-defmt"] }
-rtic = { version = "2.0.0-alpha.1", features = [ "thumbv7-backend" ] }
+rtic = { version = "2.0.1", features = [ "thumbv7-backend" ] }
 defmt-rtt = "0.4"
 stm32f4xx-hal = { version = "0.16.2", features = ["stm32f401"] }
 embedded-hal = {version = "0.2.3"}

src/main.rs

@@ -1,5 +1,6 @@
 #![no_main]
 #![no_std]
+#![feature(type_alias_impl_trait)]
 use defmt_rtt as _; // global logger
 
 use panic_probe as _;
@@ -78,6 +79,7 @@ mod app {
         disp_led: gpioa::PA10<Output<PushPull>>,
         disp_cs: gpioa::PA15<Output<PushPull>>,
         disp: ST7735<Spi<SPI1>, gpio::Pin<'A', 12, Output>, gpio::Pin<'A', 11, Output>>,
+        col_pos: u16,
     }
 
     #[init]
@@ -117,20 +119,19 @@ mod app {
         );
 
         let mut pll = si5153::Si5153::new(&i2c);
-        /*
-                pll.init(&mut i2c, 25000000, 800000000, 800000000);
-                pll.set_ms_source(&mut i2c, si5153::Multisynth::MS0, si5153::PLL::A);
-                pll.set_ms_source(&mut i2c, si5153::Multisynth::MS1, si5153::PLL::A);
-                pll.set_ms_source(&mut i2c, si5153::Multisynth::MS2, si5153::PLL::B);
 
-                pll.set_ms_freq(&mut i2c, si5153::Multisynth::MS0, 8_000_000);
-                pll.set_ms_phase(&mut i2c, si5153::Multisynth::MS0, 0);
-                pll.enable_ms_output(&mut i2c, si5153::Multisynth::MS0);
+        pll.init(&mut i2c, 25000000, 800000000, 800000000);
+        pll.set_ms_source(&mut i2c, si5153::Multisynth::MS0, si5153::PLL::A);
+        pll.set_ms_source(&mut i2c, si5153::Multisynth::MS1, si5153::PLL::A);
+        pll.set_ms_source(&mut i2c, si5153::Multisynth::MS2, si5153::PLL::B);
 
-                pll.set_ms_freq(&mut i2c, si5153::Multisynth::MS1, 8_000_000);
-                pll.set_ms_phase(&mut i2c, si5153::Multisynth::MS1, 100);
-                pll.enable_ms_output(&mut i2c, si5153::Multisynth::MS1);
-        */
+        pll.set_ms_freq(&mut i2c, si5153::Multisynth::MS0, 8_000_000);
+        pll.set_ms_phase(&mut i2c, si5153::Multisynth::MS0, 0);
+        pll.enable_ms_output(&mut i2c, si5153::Multisynth::MS0);
+
+        pll.set_ms_freq(&mut i2c, si5153::Multisynth::MS1, 8_000_000);
+        pll.set_ms_phase(&mut i2c, si5153::Multisynth::MS1, 100);
+        pll.enable_ms_output(&mut i2c, si5153::Multisynth::MS1);
 
         defmt::info!("PLL chip setup done");
 
@@ -210,7 +211,7 @@ mod app {
 
         disp.init(&mut delay).unwrap();
         disp.set_orientation(&Orientation::Landscape).unwrap();
-        disp.clear(Rgb565::GREEN).unwrap();
+        disp.clear(Rgb565::BLUE).unwrap();
 
         (
             Shared {},
@@ -233,10 +234,38 @@ mod app {
                 disp_led,
                 disp_cs,
                 disp,
+                col_pos: 0,
             },
         )
     }
 
+    #[task(priority = 0, local = [disp, col_pos])]
+    async fn update_display(cx: update_display::Context, col: [Complex<f32>; 128]) {
+        let mut max_intens = 0.0;
+        for samp in col {
+            let intens = (samp.re.pow(2) + samp.im.pow(2)) as f32;
+            max_intens = if intens > max_intens {
+                intens
+            } else {
+                max_intens
+            };
+        }
+
+        for y in 0..128 {
+            let norm_intens = (col[y].re.pow(2) + col[y].im.pow(2)) / max_intens;
+            Pixel(
+                Point::new(*cx.local.col_pos as i32, y as i32),
+                Rgb565::new(0, (norm_intens * 64.0f32) as u8, 0),
+            )
+            .draw(cx.local.disp)
+            .unwrap();
+        }
+
+        *cx.local.col_pos = (*cx.local.col_pos + 1) % 160;
+
+        defmt::info!("Position is {}", cx.local.col_pos);
+    }
+
     #[task(binds = DMA2_STREAM0, local = [transfer, iq_buffer, board_led, i_offset, q_offset, usb_filter])]
     fn dma2_stream0(cx: dma2_stream0::Context) {
         let (buffer, _) = cx
@@ -264,12 +293,14 @@ mod app {
 
         let mut fft_input = [Complex::<f32>::default(); 128];
         for idx in 0..samples.len() / 2 {
-            let _filtered = cx.local.usb_filter.compute(samples[idx]) * 2.0;
+            let _filtered = cx.local.usb_filter.compute(samples[idx]);
             fft_input[idx] = samples[idx];
         }
 
         let spectrum = cfft_128(&mut fft_input);
 
+        update_display::spawn(spectrum.clone()).unwrap();
+
         let mut max_idx: usize = 0;
         let mut max_mag = 0.0;
         for idx in 0..spectrum.len() {