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150 lines
4.4 KiB
150 lines
4.4 KiB
// -----------------------------------------------------------------------------
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// PZEM004T based power monitor
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// Copyright (C) 2018 by Xose Pérez <xose dot perez at gmail dot com>
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// -----------------------------------------------------------------------------
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#if SENSOR_SUPPORT && PZEM004T_SUPPORT
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#pragma once
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#include "Arduino.h"
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#include "BaseSensor.h"
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#include <PZEM004T.h>
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class PZEM004TSensor : public BaseSensor {
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public:
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// ---------------------------------------------------------------------
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// Public
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// ---------------------------------------------------------------------
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PZEM004TSensor(): BaseSensor() {
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_count = 4;
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_sensor_id = SENSOR_PZEM004T_ID;
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_ip = IPAddress(192,168,1,1);
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}
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~PZEM004TSensor() {
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if (_pzem) delete _pzem;
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}
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// ---------------------------------------------------------------------
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void setRX(unsigned char pin_rx) {
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if (_pin_rx == pin_rx) return;
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_pin_rx = pin_rx;
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_dirty = true;
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}
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void setTX(unsigned char pin_tx) {
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if (_pin_tx == pin_tx) return;
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_pin_tx = pin_tx;
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_dirty = true;
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}
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void setSerial(HardwareSerial * serial) {
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_serial = serial;
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_dirty = true;
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}
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// ---------------------------------------------------------------------
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unsigned char getRX() {
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return _pin_rx;
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}
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unsigned char getTX() {
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return _pin_tx;
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}
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// ---------------------------------------------------------------------
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void resetEnergy(double value = 0) {
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if (_ready) {
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_energy_offset = value - (_pzem->energy(_ip) * 3600);
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} else {
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_energy_offset = value;
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}
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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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if (!_dirty) return;
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if (_pzem) delete _pzem;
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if (_serial) {
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_pzem = new PZEM004T(_serial);
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} else {
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_pzem = new PZEM004T(_pin_rx, _pin_tx);
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}
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_pzem->setAddress(_ip);
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_ready = true;
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_dirty = false;
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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[28];
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if (_serial) {
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snprintf(buffer, sizeof(buffer), "PZEM004T @ HwSerial");
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} else {
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snprintf(buffer, sizeof(buffer), "PZEM004T @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
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}
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return String(buffer);
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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 _ip.toString();
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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_CURRENT;
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if (index == 1) return MAGNITUDE_VOLTAGE;
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if (index == 2) return MAGNITUDE_POWER_ACTIVE;
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if (index == 3) return MAGNITUDE_ENERGY;
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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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double response = 0;
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if (index == 0) response = _pzem->current(_ip);
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if (index == 1) response = _pzem->voltage(_ip);
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if (index == 2) response = _pzem->power(_ip);
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if (index == 3) response = _energy_offset + (_pzem->energy(_ip) * 3600);
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if (response < 0) response = 0;
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return response;
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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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unsigned int _pin_rx = PZEM004T_RX_PIN;
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unsigned int _pin_tx = PZEM004T_TX_PIN;
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IPAddress _ip;
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HardwareSerial * _serial = NULL;
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PZEM004T * _pzem = NULL;
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double _energy_offset = 0;
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};
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#endif // SENSOR_SUPPORT && PZEM004T_SUPPORT
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