hardware/button_controller.h¶

GPIO button input controller.

Three active-low buttons are intended for high-level UI control: Start -> GPIO 20 Stop -> GPIO 21 Reset -> GPIO 24

These pins intentionally avoid the mux select pins, mux signal pins, and the Pi’s I2C pins used by the OLED.

Enums

enum class ButtonEvent¶

Values:

enumerator None¶

enumerator Start¶

enumerator Stop¶

enumerator Reset¶

Variables

constexpr int DEFAULT_PIN_BUTTON_START = 20¶

constexpr int DEFAULT_PIN_BUTTON_STOP = 21¶

constexpr int DEFAULT_PIN_BUTTON_RESET = 24¶

class ButtonController¶

#include <button_controller.h>

Public Functions

ButtonController()¶

ButtonController(int startPin, int stopPin, int resetPin)¶

~ButtonController()¶

bool init()¶

void enableSimulation()¶

inline bool isInitialized() const¶

void setSimulatedPressed(ButtonEvent button, bool pressed)¶

ButtonEvent poll()¶

const char *eventName(ButtonEvent event) const¶

Private Functions

bool readRaw(int index)¶

Private Members

int pins[3]¶

bool initialized¶

bool simulationMode¶

bool simulatedState[3]¶

bool rawState[3]¶

bool stableState[3]¶

std::chrono::steady_clock::time_point lastChange[3]¶