add coin chirp when you click the volume button

.gitmodules

@@ -1,12 +1,12 @@
 [submodule "ch32v-insert-coin/ext/ch32-hal"]
 	path = ch32v-insert-coin/ext/ch32-hal
-	url = git@github.com:sigil-03/ch32-hal.git
+	url = https://github.com/sigil-03/ch32-hal.git
 [submodule "ch32v-insert-coin/ext/qingke"]
 	path = ch32v-insert-coin/ext/qingke
-	url = git@github.com:ch32-rs/qingke.git
+	url = https://github.com/ch32-rs/qingke.git
 [submodule "ch32v-insert-coin/ext/adpcm-pwm-dac"]
 	path = ch32v-insert-coin/ext/adpcm-pwm-dac
-	url = ssh://git@git.glyphs.tech:222/sigil-03/adpcm-pwm-dac.git
+	url = https://git.glyphs.tech/sigil-03/adpcm-pwm-dac.git
 [submodule "ch32v-insert-coin/ext/wavetable-synth"]
 	path = ch32v-insert-coin/ext/wavetable-synth
 	url = https://git.glyphs.tech/sigil-03/wavetable-synth.git

ch32v-insert-coin/ext/ch32-hal

@@ -1 +1 @@
-Subproject commit f41336744c4e2548c8f6ba9b323ae4aa39959f1d
+Subproject commit 4f11d68e62dcb0e7098eecf357168724a8322d80

ch32v-insert-coin/src/app.rs

@@ -9,7 +9,7 @@ pub enum State {
     Active,
 }
 
-mod settings {
+pub mod settings {
 
     #[derive(Debug, Default, Clone, Copy)]
     pub enum Level {
@@ -183,7 +183,7 @@ use crate::synthesizer::SynthesizerService;
 
 pub use settings::Settings;
 
-#[cfg(feature = "enable_print")]
+// #[cfg(feature = "enable_print")]
 use ch32_hal::println;
 
 pub struct TimerConfig {
@@ -193,7 +193,8 @@ pub struct TimerConfig {
     pub usb_adc_timer_ms: usize,
     pub led0_timer_ms: usize,
     pub led1_timer_ms: usize,
-    pub led2_timer_ms: usize,
+    pub shutdown_timer_s: usize,
+    // pub led2_timer_ms: usize,
 }
 
 pub struct Timers {
@@ -203,7 +204,9 @@ pub struct Timers {
     usb_adc_timer: TickTimerService,
     led0_timer: TickTimerService,
     led1_timer: TickTimerService,
-    led2_timer: TickTimerService,
+    shutdown_timer: TickTimerService,
+    pps_timer: TickTimerService,
+    // led2_timer: TickTimerService,
 }
 
 impl Timers {
@@ -233,10 +236,15 @@ impl Timers {
                 TickServiceData::new(config.led1_timer_ms * system_tick_rate_hz / 1000),
                 true,
             ),
-            led2_timer: TickTimerService::new(
-                TickServiceData::new(config.led2_timer_ms * system_tick_rate_hz / 1000),
-                true,
+            shutdown_timer: TickTimerService::new(
+                TickServiceData::new(config.shutdown_timer_s),
+                false,
             ),
+            pps_timer: TickTimerService::new(TickServiceData::new(system_tick_rate_hz), true),
+            // led2_timer: TickTimerService::new(
+            //     TickServiceData::new(config.led2_timer_ms * system_tick_rate_hz / 1000),
+            //     true,
+            // ),
         }
     }
     pub fn tick(&mut self) {
@@ -246,7 +254,8 @@ impl Timers {
         self.usb_adc_timer.tick();
         self.led0_timer.tick();
         self.led1_timer.tick();
-        self.led2_timer.tick();
+        self.pps_timer.tick();
+        // self.led2_timer.tick();
     }
     pub fn need_service(&self) -> bool {
         self.sp_timer.need_service()
@@ -255,7 +264,9 @@ impl Timers {
             | self.usb_adc_timer.need_service()
             | self.led0_timer.need_service()
             | self.led1_timer.need_service()
-            | self.led2_timer.need_service()
+            | self.shutdown_timer.need_service()
+            | self.pps_timer.need_service()
+        // | self.led2_timer.need_service()
     }
     pub fn init(&mut self) {
         self.led0_timer.reset();
@@ -272,7 +283,7 @@ impl Timers {
 pub struct Services {
     pub led0: LedService,
     pub led1: LedService,
-    pub led2: LedService,
+    // pub led2: LedService,
     pub synth0: SynthesizerService,
     pub sample_player: DacService<'static>,
     pub sequencer: sequencer::DynamicSequence<'static>,
@@ -294,13 +305,16 @@ pub struct Config {
 pub struct Sequences {
     pub led0: sequencer::BasicSequence<'static>,
     pub led1: sequencer::BasicSequence<'static>,
-    pub led2: sequencer::BasicSequence<'static>,
+    // pub led2: sequencer::BasicSequence<'static>,
     pub audio: &'static [(&'static [sequencer::SequenceEntry], usize)],
 }
 
 // things that touch hardware
 pub struct Interfaces {
     pub pwm_core: SimplePwmCore<'static, ch32_hal::peripherals::TIM1>,
+    pub adc_core: crate::AdcCore,
+    pub amp: crate::Amplifier,
+    pub usb: crate::Usb,
 }
 
 pub struct App {
@@ -319,10 +333,11 @@ impl App {
         services: Services,
         sequences: Sequences,
         interfaces: Interfaces,
+        settings: Settings,
     ) -> Self {
         Self {
             state: State::default(),
-            settings: Settings::default(),
+            settings,
             timers: Timers::new(config.timers, config.system_tick_rate_hz),
             services,
             sequences,
@@ -332,6 +347,8 @@ impl App {
 
     pub fn init(&mut self) {
         // self.timers.init();
+        self.interfaces.amp.enable();
+
         self.timers.batt_adc_timer.reset();
         self.timers.batt_adc_timer.enable(true);
 
@@ -344,13 +361,20 @@ impl App {
         self.timers.led1_timer.reset();
         self.timers.led1_timer.enable(true);
 
-        self.timers.led2_timer.reset();
-        self.timers.led2_timer.enable(true);
+        self.timers.shutdown_timer.reset();
+        self.timers.shutdown_timer.enable(true);
 
-        self.services.synth0.set_freq(1);
+        self.timers.pps_timer.reset();
+        self.timers.pps_timer.enable(true);
+
+        // self.timers.led2_timer.reset();
+        // self.timers.led2_timer.enable(true);
+
+        // self.services.synth0.set_freq(1);
         self.services.synth0.disable();
-
         self.services.sequencer.disable();
+
+        crate::riscv::asm::delay(2_500_000);
     }
 
     pub fn set_state(&mut self, state: State) {
@@ -388,8 +412,16 @@ impl App {
         }
         if self.timers.batt_adc_timer.need_service() {
             self.timers.batt_adc_timer.service();
-            #[cfg(feature = "enable_print")]
-            println!("batt adc service");
+            if !self.interfaces.usb.powered() {
+                let bv = self.interfaces.adc_core.get_battery_voltage();
+                let avg = self.interfaces.adc_core.get_average();
+                // #[cfg(feature = "enable_print")]
+                // println!("batt adc service: {bv}, {avg}");
+                // println!("none USB");
+                if avg < 421 {
+                    self.set_state(State::DeepSleep);
+                }
+            }
         }
         if self.timers.usb_adc_timer.need_service() {
             self.timers.usb_adc_timer.service();
@@ -430,23 +462,33 @@ impl App {
             // #[cfg(feature = "enable_print")]
             // println!("led1 service");
         }
-        if self.timers.led2_timer.need_service() {
-            let out = match self.settings.brightness {
-                Level::Off => 0,
-                Level::Low => 5,
-                Level::Medium => 25,
-                Level::High => 75,
-                Level::Maximum => {
-                    self.sequences.led2.next();
-                    self.sequences.led2.get_value() / 6
+        if self.timers.pps_timer.need_service() {
+            self.timers.pps_timer.service();
+            self.timers.shutdown_timer.tick();
         }
-            };
-            self.timers.led2_timer.service();
-            self.services.led2.set_amplitude(out);
+        if self.timers.shutdown_timer.need_service() {
+            self.timers.shutdown_timer.service();
+            self.timers.shutdown_timer.reset();
+            // println!("eepy");
+            self.set_state(State::DeepSleep);
+        }
+        // if self.timers.led2_timer.need_service() {
+        //     let out = match self.settings.brightness {
+        //         Level::Off => 0,
+        //         Level::Low => 5,
+        //         Level::Medium => 25,
+        //         Level::High => 75,
+        //         Level::Maximum => {
+        //             self.sequences.led2.next();
+        //             self.sequences.led2.get_value() / 6
+        //         }
+        //     };
+        //     self.timers.led2_timer.service();
+        //     self.services.led2.set_amplitude(out);
 
-            // #[cfg(feature = "enable_print")]
-            // println!("led2 service");
-        }
+        //     // #[cfg(feature = "enable_print")]
+        //     // println!("led2 service");
+        // }
 
         // services
         if self.services.led0.need_service() {
@@ -461,12 +503,12 @@ impl App {
                 .write_amplitude(self.services.led1.channel, self.services.led1.amplitude);
             self.services.led1.service();
         }
-        if self.services.led2.need_service() {
-            self.interfaces
-                .pwm_core
-                .write_amplitude(self.services.led2.channel, self.services.led2.amplitude);
-            self.services.led2.service();
-        }
+        // if self.services.led2.need_service() {
+        //     self.interfaces
+        //         .pwm_core
+        //         .write_amplitude(self.services.led2.channel, self.services.led2.amplitude);
+        //     self.services.led2.service();
+        // }
 
         // TODO: disable when you get to the end automatically
         // in the sequencer, not here
@@ -513,22 +555,29 @@ impl App {
         self.interfaces
             .pwm_core
             .write_amplitude(self.services.led1.channel, 0);
-        self.interfaces
-            .pwm_core
-            .write_amplitude(self.services.led2.channel, 0);
-        self.interfaces
-            .pwm_core
-            .disable(ch32_hal::timer::Channel::Ch4);
+        crate::riscv::asm::delay(10_000_000);
+
+        self.interfaces.pwm_core.pwm.borrow().shutdown();
+        self.interfaces.adc_core.shutdown();
+
+        self.interfaces.amp.disable();
     }
     pub fn volume_button(&mut self) {
         self.settings.volume.next();
         #[cfg(feature = "enable_print")]
         println!("new volume: {:?}", self.settings.volume);
+        self.services
+            .sequencer
+            .play_sequence(&crate::sequences::COIN_CHIRP, 0);
+        self.timers.shutdown_timer.reset();
+        self.timers.shutdown_timer.enable(true);
     }
     pub fn brightness_button(&mut self) {
         self.settings.brightness.next();
         #[cfg(feature = "enable_print")]
         println!("new brightness: {:?}", self.settings.brightness);
+        self.timers.shutdown_timer.reset();
+        self.timers.shutdown_timer.enable(true);
     }
     pub fn main_button_press(&mut self) {
         // TODO
@@ -536,8 +585,10 @@ impl App {
         println!("main button press");
         self.timers.sp_timer.reset();
         self.timers.lp_timer.reset();
+        self.timers.shutdown_timer.reset();
         self.timers.sp_timer.enable(true);
         self.timers.lp_timer.enable(true);
+        self.timers.shutdown_timer.enable(true);
         self.main_button_click();
     }
     pub fn main_button_release(&mut self) {
@@ -569,12 +620,14 @@ impl App {
         self.services
             .sequencer
             .play_sequence(&crate::sequences::COIN_CHIRP, 0);
+        self.timers.shutdown_timer.reset();
+        self.timers.shutdown_timer.enable(true);
     }
 }
 
 // Events
 impl App {
-    fn main_button_click(&mut self) {
+    pub fn main_button_click(&mut self) {
         // TODO
         #[cfg(feature = "enable_print")]
         println!("click");
@@ -610,6 +663,19 @@ impl App {
     pub fn get_state(&self) -> State {
         self.state
     }
+    pub fn get_settings(&self) -> Settings {
+        self.settings
+    }
+    pub fn should_wake(&self) -> bool {
+        if self.interfaces.usb.powered() {
+            return true;
+        } else {
+            if self.interfaces.adc_core.get_average() >= 421 {
+                return true;
+            }
+        }
+        return false;
+    }
 }
 
 // TODO LIST

ch32v-insert-coin/src/debounced_gpio.rs

@@ -17,7 +17,7 @@ impl<'a> DebouncedGPIO<'a> {
     pub fn new(pin: AnyPin, system_tick_rate_hz: usize, debounce_time_ms: usize) -> Self {
         // coin debounce timer (100ms)
         Self {
-            input: Input::new(pin, Pull::Up),
+            input: Input::new(pin, Pull::None),
             value: false,
             ready: false,
             active: false,

ch32v-insert-coin/src/insert_coin/insert_coin.rs

@@ -11,7 +11,7 @@ use crate::insert_coin::services::{DacService, LedService, Service, TickService,
 // static LED1_DCS: [u8; 5] = [0u8, 25u8, 50u8, 75u8, 100u8];
 
 pub struct SimplePwmCore<'d, T: GeneralInstance16bit> {
-    pwm: core::cell::RefCell<SimplePwm<'d, T>>,
+    pub pwm: core::cell::RefCell<SimplePwm<'d, T>>,
 }
 
 impl<'d, T: GeneralInstance16bit> SimplePwmCore<'d, T> {

ch32v-insert-coin/src/main.rs

@@ -31,7 +31,7 @@ use insert_coin::{CoreConfig, DacService, InsertCoin, LedService, SimplePwmCore}
 use ch32_hal as hal;
 use hal::bind_interrupts;
 use hal::delay::Delay;
-use hal::gpio::{AnyPin, Input, Level, Output, Pin, Pull};
+use hal::gpio::{AnyPin, Input, Level, Output, OutputOpenDrain, Pin, Pull};
 use hal::time::Hertz;
 use hal::timer::low_level::CountingMode;
 use hal::timer::simple_pwm::{PwmPin, SimplePwm};
@@ -44,6 +44,94 @@ use crate::app::sequencer::{DynamicSequence, SequenceEntry};
 
 static LED0_SEQ: [u8; 8] = [0u8, 25u8, 50u8, 75u8, 100u8, 75u8, 50u8, 25u8];
 
+pub struct Usb {
+    usb_pin: Input<'static>,
+}
+
+impl Usb {
+    pub fn new(usb_pin: Input<'static>) -> Self {
+        Self { usb_pin }
+    }
+    pub fn powered(&self) -> bool {
+        self.usb_pin.is_high()
+    }
+    // pub fn enable(&mut self) {
+    //     self.usb_pin.set_as_input(Pull::Up);
+    // }
+    // pub fn disable(&mut self) {
+    //     self.usb_pin.set_as_input(Pull::None);
+    // }
+}
+
+pub struct Amplifier {
+    amp_en: OutputOpenDrain<'static>,
+}
+
+impl Amplifier {
+    pub fn new(amp_en: OutputOpenDrain<'static>) -> Self {
+        let mut amp = Self { amp_en };
+        amp.disable();
+        amp
+    }
+    pub fn enable(&mut self) {
+        self.amp_en.set_low();
+    }
+    pub fn disable(&mut self) {
+        self.amp_en.set_high();
+    }
+    pub fn enabled(&self) -> bool {
+        !self.amp_en.is_set_high()
+    }
+}
+
+use hal::adc::Adc;
+use hal::peripherals::{ADC1, PD4};
+
+pub struct AdcCore {
+    adc: Adc<'static, ADC1>,
+    battery_pin: PD4,
+    batt_values: [u16; 10],
+    index: usize,
+}
+
+impl AdcCore {
+    pub fn new(mut adc: Adc<'static, ADC1>, pin: PD4) -> Self {
+        riscv::asm::delay(20_000);
+        adc.calibrate();
+        Self {
+            adc,
+            battery_pin: pin,
+            batt_values: [1024; 10],
+            index: 0,
+        }
+    }
+
+    // TODO make this a float or something
+    pub fn get_battery_voltage(&mut self) -> u16 {
+        let val = self
+            .adc
+            .convert(&mut self.battery_pin, hal::adc::SampleTime::CYCLES241);
+        self.batt_values[self.index] = val;
+        self.index += 1;
+        if self.index > &self.batt_values.len() - 1 {
+            self.index = 0;
+        }
+        val
+    }
+
+    pub fn get_average(&self) -> u16 {
+        let mut sum = 0;
+        for value in &self.batt_values {
+            sum += value;
+        }
+        sum / self.batt_values.len() as u16
+    }
+
+    pub fn shutdown(&mut self) {
+        self.adc.shutdown()
+    }
+}
+
 #[derive(Debug)]
 struct Flag {
     value: bool,
@@ -151,16 +239,40 @@ fn systick_init(tick_freq_hz: usize) {
         w.set_stclk(ch32_hal::pac::systick::vals::Stclk::HCLK_DIV8); // HCLK/8 clock source
     });
 }
+fn systick_stop() {
+    let r = &ch32_hal::pac::SYSTICK;
+    // Reset SysTick
+    r.ctlr().write(|w| {
+        // Start with everything disabled
+    });
+}
 
 bind_interrupts!(struct Irqs {
     EXTI7_0 => Test;
 });
 
 // TODO: remove
+use app::settings::Settings;
 use insert_coin::TickTimerService;
 use insert_coin::{TickService, TickServiceData};
 
-fn app_main(mut p: hal::Peripherals) -> ! {
+fn app_main(mut p: hal::Peripherals, app_settings: Settings) -> Settings {
+    // initialize ADC core first, and exit if battery is too low
+    let mut adc = hal::adc::Adc::new(p.ADC1, Default::default());
+    let mut batt_monitor_pin = p.PD4;
+    let mut adc_core = AdcCore::new(adc, batt_monitor_pin);
+
+    let mut usb_detect_pin = p.PD5;
+    let usb_detect_input = Input::new(usb_detect_pin, Pull::Up);
+    let usb = Usb::new(usb_detect_input);
+
+    let bv = adc_core.get_battery_voltage();
+
+    // if we don't have USB power, and the batt ADC reads under 421, don't wake
+    if !usb.powered() && bv < 421 {
+        adc_core.shutdown();
+        return app_settings;
+    }
     // === output setup ===
 
     // LED0 output setup
@@ -171,10 +283,6 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let led1_pin = PwmPin::new_ch1::<0>(p.PD2);
     let led1_ch = hal::timer::Channel::Ch1;
 
-    // LED2 output setup
-    let led2_pin = PwmPin::new_ch2::<0>(p.PA1);
-    let led2_ch = hal::timer::Channel::Ch2;
-
     // DAC output setup
     let dac_pin = PwmPin::new_ch4::<0>(p.PC4);
     // let dac_ch = hal::timer::Channel::Ch4;
@@ -183,7 +291,8 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let mut pwm = SimplePwm::new(
         p.TIM1,
         Some(led1_pin),
-        Some(led2_pin),
+        // Some(led2_pin),
+        None,
         Some(led0_pin),
         Some(dac_pin),
         Hertz::khz(200),
@@ -192,26 +301,27 @@ fn app_main(mut p: hal::Peripherals) -> ! {
 
     pwm.set_polarity(led0_ch, OutputPolarity::ActiveHigh);
     pwm.set_polarity(led1_ch, OutputPolarity::ActiveLow);
-    pwm.set_polarity(led2_ch, OutputPolarity::ActiveLow);
+    let mut pwm_core = SimplePwmCore::new(pwm);
+    pwm_core.write_amplitude(led0_ch, 0);
+    pwm_core.write_amplitude(led1_ch, 0);
+
+    // pwm.set_polarity(led2_ch, OutputPolarity::ActiveLow);
 
     let tick_rate_hz = 50000;
 
     let core_config = CoreConfig::new(tick_rate_hz);
 
-    let pwm_core = SimplePwmCore::new(pwm);
-
     // === input setup ===
 
     // adc
-    let mut adc = hal::adc::Adc::new(p.ADC1, Default::default());
-    let mut batt_monitor_pin = p.PD4;
+    // let mut adc = hal::adc::Adc::new(p.ADC1, Default::default());
+    // let mut batt_monitor_pin = p.PD4;
+    // let adc_core = AdcCore::new(adc, batt_monitor_pin);
 
     // adc2
     // let mut usb_detect_dc = hal::adc::Adc::new(p.ADC1, Default::default());
-    let mut usb_detect_pin = p.PD5;
 
     // println!("ADC_PIN CHANNEL: {}", adc_pin.channel().channel());
-    let adc_cal = adc.calibrate();
 
     // #[cfg(feature = "enable_print")]
     // println!("ADC calibration value: {}", adc_cal);
@@ -222,11 +332,11 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let volume_btn_pin = p.PC6;
     let light_ctrl_btn_pin = p.PC7;
     let amp_en = p.PC5;
-    let extra_io_1 = p.PD0;
-    let extra_io_2 = p.PD3;
+    // let extra_io_1 = p.PD0;
+    // let extra_io_2 = p.PD3;
 
-    let mut amp_en_output = Output::new(amp_en, Level::Low, Default::default());
-    amp_en_output.set_low();
+    let mut amp_en_output = OutputOpenDrain::new(amp_en, Level::Low, Default::default());
+    let amp = Amplifier::new(amp_en_output);
 
     // set up interrupts
     unsafe { system::init_gpio_irq(sense_coin_pin.pin(), sense_coin_pin.port(), true, false) };
@@ -248,11 +358,14 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let timer_config = TimerConfig {
         sp_timer_ms: 1000,
         lp_timer_ms: 3000,
-        batt_adc_timer_ms: 10000,
+        batt_adc_timer_ms: 1000,
         usb_adc_timer_ms: 10000,
         led0_timer_ms: 100,
         led1_timer_ms: 100,
-        led2_timer_ms: 100,
+        // 4 hours:
+        // shutdown_timer_s: 1,
+        shutdown_timer_s: 4 * 60 * 60 * 110 / 100,
+        // led2_timer_ms: 100,
     };
 
     let app_config = Config {
@@ -265,18 +378,18 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let dac_tick_per_service = tick_rate_hz / dac_sample_rate_hz;
     let dac_service_data = TickServiceData::new(dac_tick_per_service);
 
-    let coin_sound = include_bytes!("../audio/coin5.raw");
+    // let coin_sound = include_bytes!("../audio/coin5.raw");
     // let coin_sound = include_bytes!("../audio/coin2.raw");
 
     let sample_player = DacService::new(ch32_hal::timer::Channel::Ch4, dac_service_data);
-    sample_player.load_data(coin_sound);
+    // sample_player.load_data(coin_sound);
 
     let sequencer = app::sequencer::DynamicSequence::new(&SEQUENCE_LIST[0].0, tick_rate_hz);
 
     let app_services = Services {
         led0: LedService::new(led0_ch),
         led1: LedService::new(led1_ch),
-        led2: LedService::new(led2_ch),
+        // led2: LedService::new(led2_ch),
         synth0: SynthesizerService::new(tick_rate_hz),
         sample_player,
         sequencer,
@@ -285,13 +398,35 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let app_sequences = Sequences {
         led0: BasicSequence::new(&LED0_SEQ),
         led1: BasicSequence::new(&LED0_SEQ),
-        led2: BasicSequence::new(&LED0_SEQ),
+        // led2: BasicSequence::new(&LED0_SEQ),
         audio: &SEQUENCE_LIST,
     };
 
-    let app_interfaces = Interfaces { pwm_core };
+    let app_interfaces = Interfaces {
+        pwm_core,
+        adc_core,
+        amp,
+        usb,
+    };
 
-    let mut app = App::new(app_config, app_services, app_sequences, app_interfaces);
+    let mut app = App::new(
+        app_config,
+        app_services,
+        app_sequences,
+        app_interfaces,
+        app_settings,
+    );
+
+    let need_sound = unsafe {
+        #[allow(static_mut_refs)]
+        if INPUT_FLAGS.main_btn_flag.active() {
+            #[allow(static_mut_refs)]
+            INPUT_FLAGS.main_btn_flag.clear();
+            true
+        } else {
+            false
+        }
+    };
 
     // init systick
     systick_init(tick_rate_hz);
@@ -324,6 +459,9 @@ fn app_main(mut p: hal::Peripherals) -> ! {
     let mut light_ctrl_btn_prev = light_ctrl_btn_input.is_high_immediate();
 
     app.init();
+    if need_sound {
+        app.main_button_click();
+    }
     loop {
         // system servicing
 
@@ -422,65 +560,54 @@ fn app_main(mut p: hal::Peripherals) -> ! {
             // enter standby
             app::State::DeepSleep => {
                 app.shut_down();
-
-                loop {
-                    unsafe { system::enter_standby() };
-                    unsafe {
-                        #[allow(static_mut_refs)]
-                        INPUT_FLAGS.sense_coin_flag.clear();
-                        #[allow(static_mut_refs)]
-                        INPUT_FLAGS.main_btn_flag.clear();
+                return app.get_settings();
             }
-                    riscv::asm::wfi();
-                    let mut config = hal::Config::default();
-                    config.rcc = hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSI;
-                    unsafe {
-                        hal::rcc::init(config.rcc);
-                    }
-                    unsafe {
-                        #[allow(static_mut_refs)]
-                        if INPUT_FLAGS.sense_coin_flag.active()
-                            || (INPUT_FLAGS.main_btn_flag.active()
-                                && main_btn_input.is_high_immediate())
-                        {
-                            unsafe {
-                                use hal::pac::Interrupt;
-                                use qingke::interrupt::Priority;
-                                use qingke_rt::CoreInterrupt;
-
-                                system::clear_interrupt(2, 6);
-
-                                qingke::pfic::set_priority(
-                                    CoreInterrupt::SysTick as u8,
-                                    Priority::P15 as u8,
-                                );
-
-                                qingke::pfic::enable_interrupt(Interrupt::EXTI7_0 as u8);
-                                qingke::pfic::enable_interrupt(CoreInterrupt::SysTick as u8);
-                            }
-
-                            app.set_state(State::Active);
-
-                            break;
-                        }
-                    }
-                }
-            }
-            // for everything else, don't do anything
             _ => {}
         }
     }
 }
-//             // if adc1_timer.need_service() {
-//             //     let val = adc.convert(&mut batt_monitor_pin, hal::adc::SampleTime::CYCLES241);
-//             //     let val = adc.convert(&mut usb_detect_pin, hal::adc::SampleTime::CYCLES241);
-//             //     #[cfg(feature = "enable_print")]
-//             //     println!("ADC value: {}", val);
 
-//             //     adc1_timer.reset();
-//             //     adc1_timer.enable(true);
-//             // }
-//         }
+use ch32_hal::timer::low_level::{OutputCompareMode, Timer};
+use ch32_hal::timer::Channel;
+
+// fn shutdown_main(p: Peripherals) {
+fn shutdown_main(p: hal::Peripherals) {
+    systick_stop();
+    // LED0 output setup
+    let led0_pin = OutputOpenDrain::new(p.PC3, Level::Low, Default::default());
+    let led1_pin = OutputOpenDrain::new(p.PD2, Level::High, Default::default());
+    let led2_pin = OutputOpenDrain::new(p.PA1, Level::High, Default::default());
+    let dac_pin = OutputOpenDrain::new(p.PC4, Level::Low, Default::default());
+    let mut amp_pin = OutputOpenDrain::new(p.PC5, Level::Low, Default::default());
+    amp_pin.set_high();
+    let volume_btn_pin = OutputOpenDrain::new(p.PC6, Level::Low, Default::default());
+    let light_ctrl_btn_pin = OutputOpenDrain::new(p.PC7, Level::Low, Default::default());
+    let usb_detect_input = OutputOpenDrain::new(p.PD5, Level::Low, Default::default());
+
+    let sense_coin_pin = p.PC2;
+    let main_btn_pin = p.PD6;
+
+    unsafe { system::init_gpio_irq(sense_coin_pin.pin(), sense_coin_pin.port(), true, false) };
+    unsafe { system::init_gpio_irq(main_btn_pin.pin(), main_btn_pin.port(), true, false) };
+
+    let sense_coin_pin = Input::new(sense_coin_pin, Pull::None);
+    let main_btn_pin = Input::new(main_btn_pin, Pull::None);
+
+    riscv::asm::delay(1_000_000);
+
+    loop {
+        unsafe { system::enter_standby() };
+        riscv::asm::wfi();
+        unsafe {
+            #[allow(static_mut_refs)]
+            if (INPUT_FLAGS.sense_coin_flag.active() || INPUT_FLAGS.main_btn_flag.active())
+            // && app.should_wake()
+            {
+                break;
+            }
+        }
+    }
+}
 
 #[qingke_rt::entry]
 fn main() -> ! {
@@ -497,7 +624,21 @@ fn main() -> ! {
     // println!("post");
     // debug_main(p);
 
-    app_main(p);
+    let mut app_settings = Settings::default();
+
+    loop {
+        unsafe {
+            hal::rcc::init(hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSI);
+        }
+        let mut p = unsafe { hal::Peripherals::steal() };
+        app_settings = app_main(p, app_settings);
+
+        unsafe {
+            hal::rcc::init(hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSI);
+        }
+        let mut p = unsafe { hal::Peripherals::steal() };
+        shutdown_main(p);
+    }
 }
 
 #[panic_handler]