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