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- // -----------------------------------------------------------------------------
- // Energy Monitor Sensor using builtin ADC
- // Copyright (C) 2017 by Xose Pérez <xose dot perez at gmail dot com>
- // -----------------------------------------------------------------------------
-
- #pragma once
-
- #include "Arduino.h"
- #include "BaseSensor.h"
- #include "EmonSensor.h"
-
- #define EMON_ANALOG_RESOLUTION 10
- #define EMON_ANALOG_CHANNELS 1
-
- class EmonAnalogSensor : public EmonSensor {
-
- public:
-
- // ---------------------------------------------------------------------
- // Public
- // ---------------------------------------------------------------------
-
- EmonAnalogSensor(): EmonSensor() {
- _channels = EMON_ANALOG_CHANNELS;
- init();
- }
-
- // ---------------------------------------------------------------------
- // Sensor API
- // ---------------------------------------------------------------------
-
- // Initialization method, must be idempotent
- void begin() {
-
- if (!_dirty) return;
- _dirty = false;
-
- // Number of slots
- _count = _magnitudes;
-
- // Bit depth
- _resolution = EMON_ANALOG_RESOLUTION;
-
- // Init analog PIN)
- pinMode(0, INPUT);
-
- // Call the parent class method
- EmonSensor::begin();
-
- // warmup channel 0 (the only one)
- read(0);
-
- }
-
- // Descriptive name of the sensor
- String description() {
- return String("EMON @ ANALOG @ GPIO0");
- }
-
- // Descriptive name of the slot # index
- String slot(unsigned char index) {
- return description();
- }
-
- // Type for slot # index
- magnitude_t type(unsigned char index) {
- _error = SENSOR_ERROR_OK;
- unsigned char i=0;
- #if EMON_REPORT_CURRENT
- if (index == i++) return MAGNITUDE_CURRENT;
- #endif
- #if EMON_REPORT_POWER
- if (index == i++) return MAGNITUDE_POWER_APPARENT;
- #endif
- #if EMON_REPORT_ENERGY
- if (index == i) return MAGNITUDE_ENERGY;
- #endif
- _error = SENSOR_ERROR_OUT_OF_RANGE;
- return MAGNITUDE_NONE;
- }
-
- // Pre-read hook (usually to populate registers with up-to-date data)
- void pre() {
-
- _current[0] = read(0);
-
- #if EMON_REPORT_ENERGY
- static unsigned long last = 0;
- if (last > 0) {
- _energy[0] += (_current[0] * _voltage * (millis() - last) / 1000);
- }
- last = millis();
- #endif
-
- }
-
- // Current value for slot # index
- double value(unsigned char index) {
-
- _error = SENSOR_ERROR_OK;
- unsigned char channel = index / _magnitudes;
-
- unsigned char i=0;
- #if EMON_REPORT_CURRENT
- if (index == i++) return _current[channel];
- #endif
- #if EMON_REPORT_POWER
- if (index == i++) return _current[channel] * _voltage;
- #endif
- #if EMON_REPORT_ENERGY
- if (index == i) return _energy[channel];
- #endif
-
- _error = SENSOR_ERROR_OUT_OF_RANGE;
- return 0;
-
- }
-
- protected:
-
- unsigned int readADC(unsigned char channel) {
- (void) channel;
- return analogRead(0);
- }
-
- };
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