fix broken buttons support / debounce

buttons.cpp

 #include "buttons.hpp"
 #include "hardware/gpio.h"
 #include "pico/stdlib.h"
-#include <map>
 
-#define BTN_DEBOUNCE_MS 100
+#define BTN_DEBOUNCE_MS 250
 
-DebouncedButton::DebouncedButton(char name) {
-    _name = name;
-    last = to_ms_since_boot(get_absolute_time());
-}
+class DebouncedButton {
+public:
+    DebouncedButton() {}
 
-char DebouncedButton::name() {
-    return _name;
-}
+    DebouncedButton(char name, uint8_t gpio) {
+        _name = name;
+        _gpio = gpio;
+        last = to_ms_since_boot(get_absolute_time());
+    }
 
-bool DebouncedButton::debounced() {
-    unsigned long now = to_ms_since_boot(get_absolute_time());
-    if (last + BTN_DEBOUNCE_MS > now) {
-        last = now;
-        return true;
+    char name() {
+        return _name;
+    }
+
+    uint8_t gpio() {
+        return _gpio;
     }
-    return false;
-}
+
+    bool debounced() {
+        uint32_t now = to_ms_since_boot(get_absolute_time());
+        if (now - last > BTN_DEBOUNCE_MS) {
+            last = now;
+            return true;
+        }
+        return false;
+    }
+
+private:
+    char _name;
+    uint8_t _gpio;
+    uint32_t last;
+};
+
+
+DebouncedButton _buttons[] = {
+        DebouncedButton('A', 12),
+        DebouncedButton('B', 13),
+        DebouncedButton('X', 14),
+        DebouncedButton('Y', 15),
+};
 
 void IoTeeButtons::setup(gpio_irq_callback_t cb) {
-    buttons[12] = DebouncedButton('A');
-    buttons[13] = DebouncedButton('B');
-    buttons[14] = DebouncedButton('X');
-    buttons[15] = DebouncedButton('Y');
-    for (auto const &b: buttons) {
-        uint8_t gpio = static_cast<uint8_t>(b.first);
-        gpio_pull_up(gpio);
-        gpio_set_irq_enabled_with_callback(gpio, GPIO_IRQ_EDGE_FALL, true, cb);
+    for (DebouncedButton button: _buttons) {
+        gpio_pull_up(button.gpio());
+        gpio_set_irq_enabled_with_callback(button.gpio(), GPIO_IRQ_EDGE_FALL, true, cb);
     }
 }
 
 bool IoTeeButtons::debounced(uint8_t gpio) {
-    return buttons[gpio].debounced();
+    for (DebouncedButton &button: _buttons) {
+        if (button.gpio() == gpio) {
+            return button.debounced();
+        }
+    }
+    return false;
 }
 
 char IoTeeButtons::name(uint8_t gpio) {
-    return buttons[gpio].name();
+    for (DebouncedButton button: _buttons) {
+        if (button.gpio() == gpio) {
+            return button.name();
+        }
+    }
+    return ' ';
 }