From d9bf83281d86acdcd5f5d3c111090b89ff70c754 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mat=C4=9Bj=20Kub=C3=AD=C4=8Dek?= <matej.kubicek@websitte.cz>
Date: Wed, 10 Jun 2026 08:36:12 +0200
Subject: [PATCH] =?UTF-8?q?P=C5=99eps=C3=A1n=C3=AD=20tla=C4=8D=C3=ADtka=20?=
 =?UTF-8?q?na=20extern=C3=AD=20pullup,=20m=C3=ADsto=20intern=C3=ADho.=20Pr?=
 =?UTF-8?q?avd=C4=9Bpodobn=C4=9B=20hardware=20chyba.?=
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---
 src/src/main.cpp | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/src/src/main.cpp b/src/src/main.cpp
index f19e722..2682ee7 100644
--- a/src/src/main.cpp
+++ b/src/src/main.cpp
@@ -43,12 +43,11 @@ bool masked = false;
 volatile bool buttonPressed = false;
 constexpr unsigned long DEBOUNCE_MS = 50;
 unsigned long lastButtonTime = 0;
+volatile unsigned long buttonPressTime = 0;
 
 void onButtonPress() {
-    if (const unsigned long now = millis(); now - lastButtonTime >= DEBOUNCE_MS) {
-        lastButtonTime = now;
-        buttonPressed = true;
-    }
+    buttonPressTime = millis();
+    buttonPressed = true;
 }
 
 String formatCode(const int value) {
@@ -209,7 +208,7 @@ void setup() {
     lcd.printstr("NastavujiSePiny.");
     Serial.println("Nastavování pinů");
 
-    pinMode(BUTTON_PIN,      INPUT_PULLDOWN); Serial.println("Piny: 1/8");
+    pinMode(BUTTON_PIN,      INPUT); Serial.println("Piny: 1/8");
     pinMode(RGB_RED_PIN,     OUTPUT);         Serial.println("Piny: 2/8");
     pinMode(RGB_GREEN_PIN,   OUTPUT);         Serial.println("Piny: 3/8");
     pinMode(RGB_BLUE_PIN,    OUTPUT);         Serial.println("Piny: 4/8");
@@ -229,6 +228,15 @@ void setup() {
 }
 
 void loop() {
+    if (buttonPressed) {
+        if (millis() - buttonPressTime >= DEBOUNCE_MS) {
+            buttonPressed = false;
+            // handle the press
+        } else {
+            buttonPressed = false; // too fast, ignore
+        }
+    }
+
     if (Serial.available()) {
         String cmd = Serial.readStringUntil('\n');
         cmd.trim();