From 278de69a160c225519c94fb4411880c0f2867942 Mon Sep 17 00:00:00 2001
From: Martin Brodbeck <martin@brodbeck-online.de>
Date: Wed, 1 Jun 2022 14:31:17 +0200
Subject: [PATCH] button logic (WIP)

---
 src/gbmanager.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/gbmanager.cpp b/src/gbmanager.cpp
index ee9037b..48d1977 100644
--- a/src/gbmanager.cpp
+++ b/src/gbmanager.cpp
@@ -15,6 +15,9 @@ constexpr uint I2C_SDA_PIN = 26;
 constexpr uint I2C_SCL_PIN = 27;
 constexpr uint DS18B20_PIN = 28;
 constexpr uint RELAIS_PIN = 18;
+constexpr uint BUTTON_1_PIN = 17;
+constexpr uint BUTTON_2_PIN = 16;
+constexpr uint BUTTON_3_PIN = 15;
 
 // Custom chars for the LCD
 constexpr char CUSTOM_CHAR_DEG = 0xDF;
@@ -22,6 +25,23 @@ constexpr char CUSTOM_CHAR_AE = 0xE1;
 
 using std::string;
 
+void buttonPressedCallback(uint gpio, uint32_t events) {
+    static absolute_time_t lastPressed = get_absolute_time();
+    switch (gpio) {
+    case BUTTON_1_PIN:
+        break;
+    case BUTTON_2_PIN:
+        break;
+    case BUTTON_3_PIN:
+        if (absolute_time_diff_us(lastPressed, get_absolute_time()) > 750000) {
+            std::cout << "Button 3 pressed!" << std::endl;
+            lastPressed = get_absolute_time();
+        }
+
+        break;
+    }
+}
+
 int main() {
     // Enable UART so we can print status output
     stdio_init_all();
@@ -39,6 +59,12 @@ int main() {
     // Initialize the relais
     Relais relais(RELAIS_PIN);
 
+    // Initialize the Buttons
+    gpio_set_irq_enabled_with_callback(BUTTON_1_PIN, GPIO_IRQ_EDGE_FALL, true,
+                                       &buttonPressedCallback);
+    gpio_set_irq_enabled(BUTTON_2_PIN, GPIO_IRQ_EDGE_FALL, true);
+    gpio_set_irq_enabled(BUTTON_3_PIN, GPIO_IRQ_EDGE_FALL, true);
+
     float temp_act{0};
     float temp_tgt{28.0};
     float temp_diff{0.5};