Fork of the espurna firmware for `mhsw` switches
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// -----------------------------------------------------------------------------
// PMSX003 Dust Sensor
// Uses SoftwareSerial library
// Contribution by Òscar Rovira López
// -----------------------------------------------------------------------------
#if SENSOR_SUPPORT && PMSX003_SUPPORT
#pragma once
#include "Arduino.h"
#include "BaseSensor.h"
#include <PMS.h>
#include <SoftwareSerial.h>
class PMSX003Sensor : public BaseSensor {
public:
// ---------------------------------------------------------------------
// Public
// ---------------------------------------------------------------------
PMSX003Sensor(): BaseSensor() {
_count = 3;
_sensor_id = SENSOR_PMSX003_ID;
}
~PMSX003Sensor() {
if (_serial) delete _serial;
if (_pms) delete _pms;
}
void setRX(unsigned char pin_rx) {
if (_pin_rx == pin_rx) return;
_pin_rx = pin_rx;
_dirty = true;
}
void setTX(unsigned char pin_tx) {
if (_pin_tx == pin_tx) return;
_pin_tx = pin_tx;
_dirty = true;
}
// ---------------------------------------------------------------------
unsigned char getRX() {
return _pin_rx;
}
unsigned char getTX() {
return _pin_tx;
}
// ---------------------------------------------------------------------
// Sensor API
// ---------------------------------------------------------------------
// Initialization method, must be idempotent
void begin() {
if (!_dirty) return;
_dirty = false;
if (_serial) delete _serial;
if (_pms) delete _pms;
_serial = new SoftwareSerial(_pin_rx, _pin_tx, false, 32);
_serial->begin(9600);
_pms = new PMS(* _serial);
_pms->passiveMode();
_startTime = millis();
}
// Descriptive name of the sensor
String description() {
char buffer[28];
snprintf(buffer, sizeof(buffer), "PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
return String(buffer);
}
// Descriptive name of the slot # index
String slot(unsigned char index) {
if (index < _count) {
_error = SENSOR_ERROR_OK;
char buffer[36];
if (index == 0) snprintf(buffer, sizeof(buffer), "PM1.0 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
if (index == 1) snprintf(buffer, sizeof(buffer), "PM2.5 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
if (index == 2) snprintf(buffer, sizeof(buffer), "PM10 @ PMSX003 @ SwSerial(%u,%u)", _pin_rx, _pin_tx);
return String(buffer);
}
_error = SENSOR_ERROR_OUT_OF_RANGE;
return String();
}
// Address of the sensor (it could be the GPIO or I2C address)
String address(unsigned char index) {
char buffer[6];
snprintf(buffer, sizeof(buffer), "%u:%u", _pin_rx, _pin_tx);
return String(buffer);
}
// Type for slot # index
unsigned char type(unsigned char index) {
if (index < _count) {
_error = SENSOR_ERROR_OK;
if (index == 0) return MAGNITUDE_PM1dot0;
if (index == 1) return MAGNITUDE_PM2dot5;
if (index == 2) return MAGNITUDE_PM10;
}
_error = SENSOR_ERROR_OUT_OF_RANGE;
return MAGNITUDE_NONE;
}
void pre() {
if (millis() - _startTime < 30000) {
_error = SENSOR_ERROR_WARM_UP;
return;
}
_error = SENSOR_ERROR_OK;
if(_pms->read(_data)) {
_pm1dot0 = _data.PM_AE_UG_1_0;
_pm2dot5 = _data.PM_AE_UG_2_5;
_pm10 = _data.PM_AE_UG_10_0;
}
_pms->requestRead();
}
// Current value for slot # index
double value(unsigned char index) {
if (index < _count) {
_error = SENSOR_ERROR_OK;
if(index == 0) return _pm1dot0;
if(index == 1) return _pm2dot5;
if(index == 2) return _pm10;
}
_error = SENSOR_ERROR_OUT_OF_RANGE;
return 0;
}
protected:
unsigned int _pm1dot0;
unsigned int _pm2dot5;
unsigned int _pm10;
unsigned int _pin_rx;
unsigned int _pin_tx;
unsigned long _startTime;
SoftwareSerial * _serial = NULL;
PMS * _pms = NULL;
PMS::DATA _data;
};
#endif // SENSOR_SUPPORT && PMSX003_SUPPORT