From b5fb2372fbc6fa17544585885fab37a42d135fb4 Mon Sep 17 00:00:00 2001
From: Puck Meerburg <puck@puckipedia.com>
Date: Fri, 6 Feb 2026 17:53:52 +0000
Subject: [PATCH] input: wire up third and fourth buttons

---
 src/input.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/input.c b/src/input.c
index 163ef25..35743a9 100644
--- a/src/input.c
+++ b/src/input.c
@@ -32,6 +32,13 @@ void TMR3_IRQHandler(void) {
     ADC_ChannelCfg(1);
     last_battery_value[last_battery_index++] = ADC_ExcutSingleConver();
     if (last_battery_index >= 24) last_battery_index = 0;
+
+    #if BUTTON_COUNT == 4
+    ADC_ChannelCfg(3);
+    uint16_t aux_button_value = ADC_ExcutSingleConver();
+    handle_button(3, (aux_button_value < 0xf00) && (aux_button_value > 0x400));
+    handle_button(2, aux_button_value < 0x100);
+    #endif
 }
 
 void button_init(void)
@@ -54,6 +61,10 @@ void button_init(void)
     ADC_ChannelCfg(1);
     GPIOA_ModeCfg(GPIO_Pin_0, GPIO_ModeIN_PU);
     GPIOA_ModeCfg(GPIO_Pin_2, GPIO_ModeIN_PD);
+
+    #if BUTTON_COUNT == 4
+    GPIOA_ModeCfg(GPIO_Pin_13, GPIO_ModeIN_Floating);
+    #endif
 }
 
 int get_battery_percentage(void) {