use systick event system to drive synthesis

ch32v-insert-coin/audio/sequences

@@ -0,0 +1,18 @@
+"wahwahwahwah" sound - let play a few times
+note timing: 6hz
+data: let freqs = [100, 200, 300, 400, 500, 600, 700, 800, 900];
+
+"falling" sound
+note timing: 6hz
+[
+1000,
+990, 980, 970, 960, 950, 940, 930, 920, 910, 900,
+890, 880, 870, 860, 850, 840, 830, 820, 810, 800,
+790, 780, 770, 760, 750, 740, 730, 720, 710, 700,
+690, 680, 670, 660, 650, 640, 630, 620, 610, 600,
+590, 580, 570, 560, 550, 540, 530, 520, 510, 500,
+490, 480, 470, 460, 450, 440, 430, 420, 410, 400,
+390, 380, 370, 360, 350, 340, 330, 320, 310, 300,
+290, 280, 270, 260, 250, 240, 230, 220, 210, 200,
+190, 180, 170, 160, 150, 140, 130, 120, 110, 100,
+]

ch32v-insert-coin/ext/wavetable-synth

@@ -1 +1 @@
-Subproject commit 9417e6edbf590f3fe777e39ad76efc21a024e01d
+Subproject commit e6ca9c7ed8b9af193333be793983df5e48cb961a

ch32v-insert-coin/src/main.rs

@@ -195,6 +195,107 @@ impl Handler<hal::interrupt::typelevel::EXTI7_0> for Test {
     }
 }
 
+static mut LED: Option<ch32_hal::gpio::Output<'_>> = None;
+static mut SYSTICK_COUNT: u32 = 0;
+static mut SYNTHESIZERS: Option<AppSynthesizers<'_, ch32_hal::peripherals::TIM1>> = None;
+static mut TOGGLE_COUNT: u32 = 0;
+static mut TICK_FLAG: bool = false;
+static mut SYNTH_TICK_FLAG: bool = false;
+static mut NOTE_TICK_FLAG: bool = false;
+static mut FREQ: [usize; 2] = [220, 440];
+static mut INDEX: usize = 0;
+
+fn flag() -> bool {
+    unsafe { core::ptr::read_volatile(&raw const TICK_FLAG as *const bool) }
+}
+
+fn clear_flag() {
+    unsafe {
+        TICK_FLAG = false;
+    }
+}
+
+fn synth_flag() -> bool {
+    unsafe { core::ptr::read_volatile(&raw const SYNTH_TICK_FLAG as *const bool) }
+}
+
+fn clear_synth_flag() {
+    unsafe {
+        SYNTH_TICK_FLAG = false;
+    }
+}
+
+fn note_flag() -> bool {
+    unsafe { core::ptr::read_volatile(&raw const NOTE_TICK_FLAG as *const bool) }
+}
+
+fn clear_note_flag() {
+    unsafe {
+        NOTE_TICK_FLAG = false;
+    }
+}
+
+#[qingke_rt::interrupt(core)]
+fn SysTick() {
+    let r = &ch32_hal::pac::SYSTICK;
+
+    // Clear interrupt flag
+    r.sr().write(|w| w.set_cntif(false));
+
+    unsafe {
+        // if let Some(ref mut synthesizers) = SYNTHESIZERS {
+        // println!("tick");
+        //     synthesizers.tick();
+        // }
+        SYNTH_TICK_FLAG = true;
+
+        if SYSTICK_COUNT % 5000 == 0 {
+            NOTE_TICK_FLAG = true;
+        }
+
+        if SYSTICK_COUNT % 50000 == 0 {
+            TICK_FLAG = true;
+            // if let Some(ref mut led) = LED {
+            //     let toggle = TOGGLE_COUNT;
+            //     // println!("TOGGLE {toggle}");
+            //     TOGGLE_COUNT += 1;
+            //     led.toggle();
+            // }
+            // println!("HERE");
+        }
+        SYSTICK_COUNT = SYSTICK_COUNT.wrapping_add(1);
+    }
+}
+
+fn systick_init(tick_freq_hz: usize) {
+    let r = &ch32_hal::pac::SYSTICK;
+
+    // Calculate counts per millisecond using HCLK/8 as clock source
+    // HCLK/8 = 48MHz/8 = 6MHz
+    // For tick_freq_hz interrupt: 6MHz / tick_freq_hz
+    let systick_per_tick = (48_000_000 / 8 / tick_freq_hz) as u32;
+
+    // Reset SysTick
+    r.ctlr().write(|w| {
+        // Start with everything disabled
+    });
+
+    // Set compare register and reset counter
+    r.cmp().write_value(systick_per_tick - 1);
+    r.cnt().write_value(0);
+
+    // Clear interrupt flag
+    r.sr().write(|w| w.set_cntif(false));
+
+    // Configure and start SysTick
+    r.ctlr().write(|w| {
+        w.set_ste(true); // Enable counter
+        w.set_stie(true); // Enable interrupt
+        w.set_stre(true); // Auto reload enable
+        w.set_stclk(ch32_hal::pac::systick::vals::Stclk::HCLK_DIV8); // HCLK/8 clock source
+    });
+}
+
 bind_interrupts!(struct Irqs {
     EXTI7_0 => Test;
 });
@@ -203,15 +304,20 @@ bind_interrupts!(struct Irqs {
 use insert_coin::TickTimerService;
 use insert_coin::{TickService, TickServiceData};
 
-fn debug_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
+fn debug_main(mut p: hal::Peripherals) -> ! {
     // LED0 output setup
     use hal::gpio::{Level, Output};
-    let mut led0_pin = Output::new(p.PC3, Level::High, Default::default());
+    let mut led = Output::new(p.PC3, Level::High, Default::default());
 
-    delay.delay_ms(1000);
+    // unsafe {
+    //     LED = Some(led);
+    // }
 
-    let tick_rate_hz = 100000; // 100khz
+    println!("pre");
-    let tick_interval_us = 1000000 / tick_rate_hz;
+    riscv::asm::delay(20_000_000);
+    println!("post2");
+
+    let tick_rate_hz = 100000; // 50khz
 
     // DAC output setup
     let dac_pin = PwmPin::new_ch4::<0>(p.PC4);
@@ -224,24 +330,76 @@ fn debug_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
         None,
         None,
         Some(dac_pin),
-        Hertz::khz(200),
+        Hertz::khz(500),
         CountingMode::default(),
     );
 
     let pwm_core = SimplePwmCore::new(pwm);
+    unsafe {
+        use qingke_rt::CoreInterrupt;
+
+        qingke::pfic::disable_interrupt(CoreInterrupt::SysTick as u8);
+    }
 
     // === synthesizer setup ===
-    let mut synthesizer = AppSynthesizers::new(tick_rate_hz, pwm_core);
+    // unsafe {
-    synthesizer.square.set_freq(440);
+    //     let mut synth = AppSynthesizers::new(tick_rate_hz, pwm_core);
+    //     synth.square.set_freq(440);
+    //     SYNTHESIZERS = Some(synth);
+    // }
+    let mut synth = AppSynthesizers::new(tick_rate_hz, pwm_core);
+    synth.square.set_freq(440);
 
     #[cfg(feature = "enable_print")]
     println!("begin loop");
 
-    led0_pin.toggle();
+    systick_init(tick_rate_hz);
+
+    unsafe {
+        use qingke::interrupt::Priority;
+        use qingke_rt::CoreInterrupt;
+        qingke::pfic::set_priority(CoreInterrupt::SysTick as u8, Priority::P15 as u8);
+        qingke::pfic::enable_interrupt(CoreInterrupt::SysTick as u8);
+    }
+
+    let mut index = 0;
+    let freqs = [1567, 1396, 1318, 1174, 1046, 987, 880, 783, 698];
+    // let freqs = [100, 200, 300, 400, 500, 600, 700, 800, 900];
+    // let freqs = [
+    //     1000, 990, 980, 970, 960, 950, 940, 930, 920, 910, 900, 890, 880, 870, 860, 850, 840, 830,
+    //     820, 810, 800, 790, 780, 770, 760, 750, 740, 730, 720, 710, 700, 690, 680, 670, 660, 650,
+    //     640, 630, 620, 610, 600, 590, 580, 570, 560, 550, 540, 530, 520, 510, 500, 490, 480, 470,
+    //     460, 450, 440, 430, 420, 410, 400, 390, 380, 370, 360, 350, 340, 330, 320, 310, 300, 290,
+    //     280, 270, 260, 250, 240, 230, 220, 210, 200, 190, 180, 170, 160, 150, 140, 130, 120, 110,
+    //     100,
+    // ];
 
     loop {
-        synthesizer.service();
+        if flag() {
-        delay.delay_us(tick_interval_us as u32);
+            clear_flag();
+            led.toggle();
+        }
+        if synth_flag() {
+            clear_synth_flag();
+            synth.tick();
+        }
+        if note_flag() {
+            clear_note_flag();
+            synth.square.set_freq(freqs[index]);
+            // println!("{}", { freqs[index] });
+            // println!("{}", freqs[index]);
+            index += 1;
+            if index > freqs.len() - 1 {
+                index = 0;
+            }
+        }
+        // if (unsafe { TICK_FLAG == true }) {
+        //     println!("TICK!");
+        //     led.toggle();
+        //     unsafe {
+        //         TICK_FLAG = false;
+        //     }
+        // }
     }
 }
 
@@ -394,11 +552,11 @@ fn app_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
     // dac data
     // let coin_sound = include_bytes!("../audio/coin2.raw");
     // let coin_sound = include_bytes!("../audio/sweep_dpcm_u4.raw");
-    let coin_sound = include_bytes!("../audio/button_1.raw");
+    // let coin_sound = include_bytes!("../audio/button_1.raw");
 
-    let button_sound_1 = include_bytes!("../audio/button_1.raw");
+    // let button_sound_1 = include_bytes!("../audio/button_1.raw");
-    let button_sound_2 = include_bytes!("../audio/button_2.raw");
+    // let button_sound_2 = include_bytes!("../audio/button_2.raw");
-    let button_sound_3 = include_bytes!("../audio/button_3.raw");
+    // let button_sound_3 = include_bytes!("../audio/button_3.raw");
 
     let mut system_state = SystemState::Active;
 
@@ -464,7 +622,7 @@ fn app_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
                     // todo: enter active
                     tt0.enable(true);
                     tt1.enable(true);
-                    interfaces.dac.load_data(coin_sound);
+                    // interfaces.dac.load_data(coin_sound);
                 }
                 if INPUT_FLAGS.main_btn_flag {
                     #[cfg(feature = "enable_print")]
@@ -504,12 +662,12 @@ fn app_main(mut p: hal::Peripherals, mut delay: Delay) -> ! {
                 println!("debounced button_input value: {}", value);
 
                 if !value {
-                    interfaces.dac.load_data(match settings.button_sound_index {
+                    // interfaces.dac.load_data(match settings.button_sound_index {
-                        0 => button_sound_1,
+                    //     0 => button_sound_1,
-                        1 => button_sound_2,
+                    //     1 => button_sound_2,
-                        2 => button_sound_3,
+                    //     2 => button_sound_3,
-                        _ => button_sound_1,
+                    //     _ => button_sound_1,
-                    });
+                    // });
                     // interfaces
                     //     .dac
                     //     .load_data(button_sounds[settings.button_sound_index]);
@@ -645,14 +803,16 @@ fn main() -> ! {
     let mut p = hal::init(config);
 
     // delay to let the debugger attach
-    let mut delay = Delay;
+    println!("pre");
-    delay.delay_ms(1000);
+    riscv::asm::delay(20_000_000);
+    println!("post");
+    debug_main(p);
 
-    debug_main(p, delay);
     // app_main(p, delay);
 }
 
 #[panic_handler]
 fn panic(_info: &core::panic::PanicInfo) -> ! {
+    // println!("panic: {info:?}");
     loop {}
 }

ch32v-insert-coin/src/synthesizer.rs

@@ -3,10 +3,11 @@ use ch32_hal::println;
 use ch32_hal::timer::GeneralInstance16bit;
 use wavetable_synth::{synthesizer::SimpleWavetableSynthesizer, wavetable::SimpleWavetable};
 
-const SQUARE_WAVETABLE: [u8; 32] = [
+const SQUARE_WAVETABLE: [u8; 2] = [0, 100];
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 100, 100, 100, 100, 100, 100, 100, 100,
+// const SQUARE_WAVETABLE: [u8; 32] = [
-    100, 100, 100, 100, 100, 100, 100,
+//     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 100, 100, 100, 100, 100, 100, 100, 100,
-];
+//     100, 100, 100, 100, 100, 100, 100,
+// ];
 
 pub struct AppSynthesizers<'a, T: GeneralInstance16bit> {
     pub square: SimpleWavetableSynthesizer<SimpleWavetable<'static, u8>>,
@@ -21,11 +22,30 @@ impl<'a, T: GeneralInstance16bit> AppSynthesizers<'a, T> {
         Self { square, output }
     }
 
-    pub fn service(&mut self) {
+    pub fn tick(&mut self) {
         self.square.tick();
         if self.square.has_new_output() {
             let out = self.square.get_output();
             // println!("OUTPUT: {out}");
+
+            // println!("new out");
+            self.output.write_amplitude(
+                ch32_hal::timer::Channel::Ch4,
+                out / 2,
+                // (out as f32 * (u8::MAX as f32 / u32::MAX as f32)) as u8,
+            );
+        }
+
+        // println!("{}{}", self.square.counter, self.square.has_new_output());
+    }
+
+    pub fn service(&mut self) {
+        // println!("HERE");
+        if self.square.has_new_output() {
+            let out = self.square.get_output();
+            // println!("OUTPUT: {out}");
+
+            // println!("new out");
             self.output.write_amplitude(
                 ch32_hal::timer::Channel::Ch4,
                 out / 2,