add sensoresp2 with mhz19 and sds018
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@ -13,9 +13,9 @@
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[platformio]
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#For Config upload comment in data_dir line and flash with platformio run -t uploadfs --environment sensorespx
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#data_dir=data_sensoresp1
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data_dir=data_sensoresp2
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#data_dir=data_sensoresp3
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data_dir=data_sensoresp4
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#data_dir=data_sensoresp4
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#Arbeitszimmer
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[env:sensoresp1]
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@ -55,6 +55,34 @@ lib_deps =
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Homie@3.0.0
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#Wohnzimmer Air Quality
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[env:sensoresp2]
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platform = espressif8266
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board = d1_mini
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framework = arduino
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monitor_port = /dev/ttyUSB0
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monitor_speed = 115200
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build_flags =
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-D SENSOR_MHZ19
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-D MHZ19_SERIAL_RX=D5
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-D MHZ19_SERIAL_TX=D6
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-D dataMHZ19_minchange=10
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-D dataMHZ19_readdelay=10*1000
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-D SENSOR_SDS018
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-D SDS018_SERIAL_RX=D7
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-D SDS018_SERIAL_TX=D8
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-D dataSDS018_pm25_minchange=4
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-D dataSDS018_pm10_minchange=4
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lib_deps =
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MHZ19@0.0.1
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EspSoftwareSerial@6.8.1
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Homie@3.0.0
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#Wohnzimmer
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[env:sensoresp3]
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platform = espressif8266
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168
src/main.cpp
168
src/main.cpp
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@ -104,7 +104,7 @@ struct sensordata
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// SW Serial
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//SW Serial RX: to mhz19 tx (green cable)
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//SW Serial TX: to mhz19 rx (blue cable)
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//co2 sensor needs 5v. Connect USB 5V directly (not through wemos d1 onboard diode which gives only 4.7V!)
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//co2 sensor needs 5v. Maybe better to Connect USB 5V directly (not through wemos d1 onboard diode which gives only 4.7V! at '5V' output)
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//if ABC is disabled (see in setup function) sensor should be calibrated manually. leave outdoors (=400ppm) with no direct sunlight for >20min, then connect HD pin to GND for at least 7 seconds.
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/* Pinout (view from top, connector at the bottom)
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@ -118,9 +118,15 @@ struct sensordata
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* \-----------------/
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* | | | | |
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* Vo Rx Tx NC HD
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*
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* [Connector]
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*/
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#ifndef SOFTWARESERIAL_H
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#include <SoftwareSerial.h>
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#define SOFTWARESERIAL_H
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#endif
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SoftwareSerial mhz19_swSerial;
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#define BAUD_RATE_MHZ19 9600
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@ -133,6 +139,31 @@ struct sensordata
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int mhz19_readValue_reimplemented(Stream *_streamRef, MHZ19 *_mhz19Ref); //declare function
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#endif
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#ifdef SENSOR_SDS018
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struct sensordata dataSDS018_pm25;
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struct sensordata dataSDS018_pm10;
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//SDS18 dust sensor for 2.5µm and 10µm
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//Needs 5V
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bool sds018_dustok=false;
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float value_pm25=-1;
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float value_pm10=-1;
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#ifndef SOFTWARESERIAL_H
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#include <SoftwareSerial.h>
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#define SOFTWARESERIAL_H
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#endif
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SoftwareSerial sds018_swSerial;
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#define BAUD_RATE_SDS018 9600
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unsigned long lastread_sds018=0; //to save last read time for both readings
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void readSDS018();
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#endif
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// data/homie/config.json hochladen mit platformio run --target uploadfs
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// config contains homie device name, mqtt ip and wifi credentials
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@ -251,6 +282,17 @@ void setup() {
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}
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#endif
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#ifdef SENSOR_SDS018
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Serial.println("initializing sds018");
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sds018_swSerial.begin(BAUD_RATE_SDS018, SWSERIAL_8N1, SDS018_SERIAL_RX, SDS018_SERIAL_TX, false, 256);
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#ifdef dataSDS018_pm25_minchange
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dataSDS018_pm25.minchange=dataSDS018_pm25_minchange;
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#endif
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#ifdef dataSDS018_pm10_minchange
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dataSDS018_pm10.minchange=dataSDS018_pm10_minchange;
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#endif
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#endif
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Homie_setFirmware(FW_NAME, FW_VERSION);
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Homie_setBrand(FW_NAME);
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@ -290,6 +332,11 @@ void setup() {
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#ifdef SENSOR_MHZ19
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sensorNode.advertise("co2");
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#endif
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#ifdef SENSOR_SDS018
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sensorNode.advertise("dust_pm25");
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sensorNode.advertise("dust_pm10");
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#endif
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Serial.println("connecting..");
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@ -547,7 +594,74 @@ void loop_MHZ19()
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}
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#endif
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#ifdef SENSOR_SDS018
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void loop_SDS018_pm25()
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{
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sensordata &d=dataSDS018_pm25;
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bool _changed=false;
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if (millis() >= (d.lastreadtime+d.readdelay)) {
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if (millis() >= (lastread_sds018+d.readdelay)) {
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readSDS018(); //reads values into value_pm25 und value_pm10
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}
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//Homie.getLogger() << "read pm25: " << value_pm25 << ".read pm10: " << value_pm10 << " status=" << dust_ok << endl;
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if (fabs(d.lastsentvalue-value_pm25)>=d.minchange){
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_changed=true;
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}
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d.lastreadtime=millis();
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}
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if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
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Serial.print("Sending SDS018_pm25. reason=");
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if (_changed) Serial.println("change"); else Serial.println("time");
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checkESPStatus();
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Homie.getLogger() << "read pm25: " << value_pm25 << " status=" << sds018_dustok << endl;
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if (sds018_dustok){ //send no dust values if sensor not ok
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sensorNode.setProperty("dust_pm25").send(String(value_pm25));
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}else{
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Homie.getLogger() << "sds018 dust not ok. didnt sent" << endl;
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}
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d.lastsentvalue=value_pm25;
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d.lastsent=millis();
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}
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}
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void loop_SDS018_pm10()
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{
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sensordata &d=dataSDS018_pm10;
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bool _changed=false;
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if (millis() >= (d.lastreadtime+d.readdelay)) {
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if (millis() >= (lastread_sds018+d.readdelay)) {
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readSDS018(); //reads values into value_pm25 und value_pm10
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}
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//Homie.getLogger() << "read pm25: " << value_pm25 << ".read pm10: " << value_pm10 << " status=" << dust_ok << endl;
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if (fabs(d.lastsentvalue-value_pm10)>=d.minchange){
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_changed=true;
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}
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d.lastreadtime=millis();
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}
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if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
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Serial.print("Sending SDS018_pm10. reason=");
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if (_changed) Serial.println("change"); else Serial.println("time");
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checkESPStatus();
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Homie.getLogger() << "read pm10: " << value_pm10 << " status=" << sds018_dustok << endl;
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if (sds018_dustok){ //send no dust values if sensor not ok
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sensorNode.setProperty("dust_pm10").send(String(value_pm10));
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}else{
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Homie.getLogger() << "sds018 dust not ok. didnt sent" << endl;
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}
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d.lastsentvalue=value_pm10;
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d.lastsent=millis();
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}
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}
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#endif
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@ -579,8 +693,10 @@ void loopHandler() {
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loop_MHZ19();
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#endif
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#ifdef SENSOR_SDS018
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loop_SDS018_pm25();
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loop_SDS018_pm10();
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#endif
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@ -671,4 +787,50 @@ int mhz19_readValue_reimplemented(Stream *_streamRef, MHZ19 *_mhz19Ref) { //same
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return co2;
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}
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#endif
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#ifdef SENSOR_SDS018
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void readSDS018()
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{
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lastread_sds018=millis();
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// https://github.com/crystaldust/sds018/blob/master/sds018.ino
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uint8_t mData = 0;
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uint8_t mPkt[10] = {0};
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uint8_t mCheck = 0;
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while( sds018_swSerial.available() > 0 ) {
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//Serial.println("serial available");
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for( int i=0; i<10; ++i ) {
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mPkt[i] = sds018_swSerial.read();
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//Serial.println( mPkt[i], HEX );
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}
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if( 0xC0 == mPkt[1] ) {
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Serial.println("read density");
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// Read dust density.
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// Check
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uint8_t sum = 0;
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for( int i=2; i<=7; ++i ) {
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sum += mPkt[i];
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}
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if( sum == mPkt[8] ) {
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uint8_t pm25Low = mPkt[2];
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uint8_t pm25High = mPkt[3];
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uint8_t pm10Low = mPkt[4];
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uint8_t pm10High = mPkt[5];
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value_pm25 = ( ( pm25High * 256.0 ) + pm25Low ) / 10.0;
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value_pm10 = ( ( pm10High * 256.0 ) + pm10Low ) / 10.0;
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sds018_dustok=true;
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/*Serial.print( "PM2.5: " );
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Serial.print( pm25 );
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Serial.print( "\nPM10 :" );
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Serial.print( pm10 );
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Serial.println();*/
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}
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}
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sds018_swSerial.flush();
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}
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}
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#endif
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