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143 lines
4.3 KiB
143 lines
4.3 KiB
// -----------------------------------------------------------------------------
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// Analog Sensor (maps to an analogRead)
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// Copyright (C) 2017-2018 by Xose Pérez <xose dot perez at gmail dot com>
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// -----------------------------------------------------------------------------
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#if SENSOR_SUPPORT && (ANALOG_SUPPORT || NTC_SUPPORT)
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#pragma once
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// Set ADC to TOUT pin
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#undef ADC_MODE_VALUE
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#define ADC_MODE_VALUE ADC_TOUT
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#include "Arduino.h"
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#include "BaseSensor.h"
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class AnalogSensor : public BaseSensor {
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public:
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// ---------------------------------------------------------------------
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// Public
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// ---------------------------------------------------------------------
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AnalogSensor(): BaseSensor() {
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_count = 1;
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_sensor_id = SENSOR_ANALOG_ID;
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}
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void setSamples(unsigned int samples) {
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if (_samples > 0) _samples = samples;
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}
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void setDelay(unsigned long micros) {
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_micros = micros;
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}
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void setFactor(double factor) {
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//DEBUG_MSG(("[ANALOG_SENSOR] Factor set to: %s \n"), String(factor,6).c_str());
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_factor = factor;
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}
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void setOffset(double offset) {
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//DEBUG_MSG(("[ANALOG_SENSOR] Factor set to: %s \n"), String(offset,6).c_str());
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_offset = offset;
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}
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// ---------------------------------------------------------------------
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unsigned int getSamples() {
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return _samples;
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}
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unsigned long getDelay() {
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return _micros;
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}
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double getFactor() {
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return _factor;
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}
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double getOffset() {
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return _offset;
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}
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// ---------------------------------------------------------------------
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// Sensor API
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// ---------------------------------------------------------------------
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// Initialization method, must be idempotent
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void begin() {
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pinMode(0, INPUT);
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_ready = true;
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}
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// Descriptive name of the sensor
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String description() {
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return String("ANALOG @ TOUT");
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}
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// Descriptive name of the slot # index
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String slot(unsigned char index) {
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return description();
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};
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// Address of the sensor (it could be the GPIO or I2C address)
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String address(unsigned char index) {
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return String("0");
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}
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// Type for slot # index
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unsigned char type(unsigned char index) {
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if (index == 0) return MAGNITUDE_ANALOG;
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return MAGNITUDE_NONE;
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}
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// Current value for slot # index
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// Changed return type as moving to scaled value
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double value(unsigned char index) {
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if (index == 0) return _read();
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return 0;
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}
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protected:
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//CICM: this should be for raw values
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// renaming protected function "_read" to "_rawRead"
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unsigned int _rawRead() {
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if (1 == _samples) return analogRead(0);
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unsigned long sum = 0;
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for (unsigned int i=0; i<_samples; i++) {
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if (i>0) delayMicroseconds(_micros);
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sum += analogRead(0);
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}
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return sum / _samples;
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}
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//CICM: and proper read should be scalable and thus needs sign
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//and decimal part
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double _read() {
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//Raw measure could also be a class variable with getter so that can
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//be reported through MQTT, ...
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unsigned int rawValue;
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double scaledValue;
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// Debugging doubles to string
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//DEBUG_MSG(("[ANALOG_SENSOR] Started standard read, factor: %s , offset: %s, decimals: %d \n"), String(_factor).c_str(), String(_offset).c_str(), ANALOG_DECIMALS);
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rawValue = _rawRead();
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//DEBUG_MSG(("[ANALOG_SENSOR] Raw read received: %d \n"), rawValue);
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scaledValue = _factor*rawValue + _offset;
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//DEBUG_MSG(("[ANALOG_SENSOR] Scaled value result: %s \n"), String(scaledValue).c_str());
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return scaledValue;
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}
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unsigned int _samples = 1;
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unsigned long _micros = 0;
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//CICM: for scaling and offset, also with getters and setters
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double _factor = 1.0;
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double _offset = 0.0;
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};
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#endif // SENSOR_SUPPORT && ANALOG_SUPPORT
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