From 3f4b8112fd1b3d533ee7400611565fc2b6db902b Mon Sep 17 00:00:00 2001
From: sigil-03 <sigil@glyphs.tech>
Date: Fri, 12 Sep 2025 11:44:04 -0600
Subject: [PATCH] support ADC readings

---
 ch32v-insert-coin/ext/ch32-hal |  2 +-
 ch32v-insert-coin/src/main.rs  | 43 ++++++++++++++++++++++++++++++----
 2 files changed, 39 insertions(+), 6 deletions(-)

diff --git a/ch32v-insert-coin/ext/ch32-hal b/ch32v-insert-coin/ext/ch32-hal
index 412b9f5..f413367 160000
--- a/ch32v-insert-coin/ext/ch32-hal
+++ b/ch32v-insert-coin/ext/ch32-hal
@@ -1 +1 @@
-Subproject commit 412b9f5ee3a3708de8602d6103ec83c6dd436b63
+Subproject commit f41336744c4e2548c8f6ba9b323ae4aa39959f1d
diff --git a/ch32v-insert-coin/src/main.rs b/ch32v-insert-coin/src/main.rs
index ac2877e..4fa1700 100644
--- a/ch32v-insert-coin/src/main.rs
+++ b/ch32v-insert-coin/src/main.rs
@@ -4,7 +4,7 @@
 #![feature(impl_trait_in_assoc_type)]
 
 mod insert_coin;
-use ch32_hal::{interrupt::typelevel::Handler, timer::low_level::OutputPolarity};
+use ch32_hal::{adc::AdcChannel, interrupt::typelevel::Handler, timer::low_level::OutputPolarity};
 use insert_coin::{InsertCoin, SimplePwmCore, CoreConfig};
 
 
@@ -155,7 +155,7 @@ impl Handler<hal::interrupt::typelevel::EXTI7_0> for Test {
     unsafe fn on_interrupt() {
         println!("on_interrupt()");
         critical_section::with(|_| {
-            clear_interrupt(4, 6);
+            clear_interrupt(2, 6);
         });
     }
 }
@@ -228,12 +228,26 @@ fn main() -> ! {
 
     // === input setup ===
 
+    // adc
+    let mut adc = hal::adc::Adc::new(p.ADC1, Default::default());
+    let mut adc_pin = p.PD4;
+    // println!("ADC_PIN CHANNEL: {}", adc_pin.channel().channel());
+    delay.delay_ms(1000);
+    let adc_cal = adc.calibrate();
+    println!("ADC calibration value: {}", adc_cal);
+
+
+
     // definitions
-    let coin_pin = p.PD4;
+    let coin_pin = p.PC2;
     let button_pin = p.PD6;
     println!("coin pin: {} | coin port: {}", coin_pin.pin(), coin_pin.port());
     println!("push pin: {} | push port: {}", button_pin.pin(), button_pin.port());
 
+    //2025-09-10 00:32:23.514: coin pin: 4 | coin port: 3
+    // 2025-09-10 00:32:23.515: push pin: 6 | push port: 3
+
+
     // set up interrupts
     unsafe {init_gpio_irq(coin_pin.pin(), coin_pin.port(), false, true)};    
     unsafe {init_gpio_irq(button_pin.pin(), button_pin.port(), true, true)}; 
@@ -282,14 +296,22 @@ fn main() -> ! {
     let mut lp_timer = TickTimerService::new(lp_timer_data, false);
     lp_timer.reset();
 
-    let mut delay = Delay;
+    // battery read timer 
+    let adc1_ticks = 5 * interfaces.config.tick_rate_hz;
+    let adc1_timer_data = TickServiceData::new(adc1_ticks);
+    let mut adc1_timer = TickTimerService::new(adc1_timer_data, false);
+    adc1_timer.reset();
+    adc1_timer.enable(true);
+
+
+
     let tick_interval_us = 1000000/interfaces.config.tick_rate_hz - 10;
 
     // dac data
     let coin_sound = include_bytes!("../audio/sweep_dpcm_u4.raw");
     let button_sound = include_bytes!("../audio/sweep_dpcm_u4.raw");
 
-    let mut system_state = SystemState::DeepSleep;
+    let mut system_state = SystemState::Active;
 
     interfaces.led0.set_amplitude(0);
     interfaces.led1.set_amplitude(0);
@@ -405,6 +427,7 @@ fn main() -> ! {
             // timers
             sp_timer.tick();
             lp_timer.tick();
+            adc1_timer.tick();
 
             if sp_timer.need_service() {
                 println!("sp detect!");
@@ -429,6 +452,16 @@ fn main() -> ! {
                 interfaces.led1.set_amplitude(0);
                 interfaces.service();
             }
+
+            if adc1_timer.need_service() {
+                let val = adc.convert(&mut adc_pin, hal::adc::SampleTime::CYCLES241);
+                println!("ADC value: {}", val);
+
+                adc1_timer.reset();
+                adc1_timer.enable(true);
+
+                
+            }
         }
 
         delay.delay_us(tick_interval_us as u32);