From f26920a0994c811d18f4fb47d663e9af19b2d735 Mon Sep 17 00:00:00 2001
From: sigil-03 <sigil@glyphs.tech>
Date: Sat, 15 Nov 2025 16:03:32 -0700
Subject: [PATCH] add persistent settings

---
 ch32v-insert-coin/src/app.rs  |  8 ++++++--
 ch32v-insert-coin/src/main.rs | 19 ++++++++++++++-----
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/ch32v-insert-coin/src/app.rs b/ch32v-insert-coin/src/app.rs
index 1d5d0f3..775a908 100644
--- a/ch32v-insert-coin/src/app.rs
+++ b/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 {
@@ -333,10 +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,
@@ -659,6 +660,9 @@ 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;
diff --git a/ch32v-insert-coin/src/main.rs b/ch32v-insert-coin/src/main.rs
index ca5a9dd..c92f562 100644
--- a/ch32v-insert-coin/src/main.rs
+++ b/ch32v-insert-coin/src/main.rs
@@ -245,10 +245,11 @@ bind_interrupts!(struct Irqs {
 });
 
 // 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;
@@ -256,7 +257,7 @@ fn app_main(mut p: hal::Peripherals) {
     let bv = adc_core.get_battery_voltage();
     if bv < 421 {
         adc_core.shutdown();
-        return;
+        return app_settings;
     }
     // === output setup ===
 
@@ -397,7 +398,13 @@ fn app_main(mut p: hal::Peripherals) {
         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)]
@@ -542,7 +549,7 @@ fn app_main(mut p: hal::Peripherals) {
             // enter standby
             app::State::DeepSleep => {
                 app.shut_down();
-                return;
+                return app.get_settings();
             }
             _ => {}
         }
@@ -642,12 +649,14 @@ fn main() -> ! {
     // println!("post");
     // debug_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_main(p);
+        app_settings = app_main(p, app_settings);
 
         unsafe {
             hal::rcc::init(hal::rcc::Config::SYSCLK_FREQ_48MHZ_HSI);