Fork of the espurna firmware for `mhsw` switches
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// -----------------------------------------------------------------------------
// Event Counter Sensor
// Copyright (C) 2017 by Xose Pérez <xose dot perez at gmail dot com>
// -----------------------------------------------------------------------------
#pragma once
#include "Arduino.h"
#include "BaseSensor.h"
class EventSensor : public BaseSensor {
public:
// ---------------------------------------------------------------------
// Public
// ---------------------------------------------------------------------
EventSensor(): BaseSensor() {
_count = 1;
_sensor_id = SENSOR_EVENTS_ID;
}
~EventSensor() {
detach(_gpio);
}
// ---------------------------------------------------------------------
void setGPIO(unsigned char gpio) {
_gpio = gpio;
}
void setMode(unsigned char mode) {
_mode = mode;
}
void setInterruptMode(unsigned char mode) {
_interrupt_mode = mode;
}
void setDebounceTime(unsigned long debounce) {
_debounce = debounce;
}
// ---------------------------------------------------------------------
unsigned char getGPIO() {
return _gpio;
}
unsigned char getMode() {
return _mode;
}
unsigned char getInterruptMode() {
return _interrupt_mode;
}
unsigned long getDebounceTime() {
return _debounce;
}
// ---------------------------------------------------------------------
// Sensors API
// ---------------------------------------------------------------------
// Initialization method, must be idempotent
// Defined outside the class body
void begin() {
if (_interrupt_gpio != GPIO_NONE) detach(_interrupt_gpio);
pinMode(_gpio, _mode);
attach(this, _gpio, _interrupt_mode);
}
// Descriptive name of the sensor
String description() {
char buffer[20];
snprintf(buffer, sizeof(buffer), "INTERRUPT @ GPIO%d", _gpio);
return String(buffer);
}
// Type for slot # index
magnitude_t type(unsigned char index) {
_error = SENSOR_ERROR_OK;
if (index == 0) return MAGNITUDE_EVENTS;
_error = SENSOR_ERROR_OUT_OF_RANGE;
return MAGNITUDE_NONE;
}
// Current value for slot # index
double value(unsigned char index) {
_error = SENSOR_ERROR_OK;
if (index == 0) {
double value = _events;
_events = 0;
return value;
};
_error = SENSOR_ERROR_OUT_OF_RANGE;
return 0;
}
// Handle interrupt calls
void handleInterrupt(unsigned char gpio) {
(void) gpio;
static unsigned long last = 0;
if (millis() - last > _debounce) {
_events = _events + 1;
last = millis();
}
}
// Interrupt attach callback
void attached(unsigned char gpio) {
BaseSensor::attached(gpio);
_interrupt_gpio = gpio;
}
// Interrupt detach callback
void detached(unsigned char gpio) {
BaseSensor::detached(gpio);
if (_interrupt_gpio == gpio) _interrupt_gpio = GPIO_NONE;
}
protected:
// ---------------------------------------------------------------------
// Protected
// ---------------------------------------------------------------------
volatile unsigned long _events = 0;
unsigned long _debounce = EVENTS_DEBOUNCE;
unsigned char _gpio;
unsigned char _mode;
unsigned char _interrupt_mode;
unsigned char _interrupt_gpio = GPIO_NONE;
};