add sensoresp2 with mhz19 and sds018

platformio.ini

@@ -13,9 +13,9 @@
 [platformio]
 #For Config upload comment in data_dir line and flash with platformio run -t uploadfs --environment sensorespx
 #data_dir=data_sensoresp1
-
+data_dir=data_sensoresp2
 #data_dir=data_sensoresp3
-data_dir=data_sensoresp4
+#data_dir=data_sensoresp4
 
 #Arbeitszimmer
 [env:sensoresp1]
@@ -55,6 +55,34 @@ lib_deps =
     Homie@3.0.0
 
 
+#Wohnzimmer Air Quality
+[env:sensoresp2]
+platform = espressif8266
+board = d1_mini
+framework = arduino
+
+monitor_port = /dev/ttyUSB0
+monitor_speed = 115200
+
+build_flags =
+    -D SENSOR_MHZ19
+    -D MHZ19_SERIAL_RX=D5
+    -D MHZ19_SERIAL_TX=D6
+    -D dataMHZ19_minchange=10
+    -D dataMHZ19_readdelay=10*1000
+
+    -D SENSOR_SDS018
+    -D SDS018_SERIAL_RX=D7
+    -D SDS018_SERIAL_TX=D8
+    -D dataSDS018_pm25_minchange=4
+    -D dataSDS018_pm10_minchange=4
+
+lib_deps =
+    MHZ19@0.0.1
+    EspSoftwareSerial@6.8.1
+    Homie@3.0.0
+
+
 #Wohnzimmer
 [env:sensoresp3]
 platform = espressif8266

src/main.cpp

@@ -104,7 +104,7 @@ struct sensordata
   // SW Serial
   //SW Serial RX: to mhz19 tx (green cable)
   //SW Serial TX: to mhz19 rx (blue cable)
-  //co2 sensor needs 5v. Connect USB 5V directly (not through wemos d1 onboard diode which gives only 4.7V!)
+  //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)
 
   //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.
   /* Pinout  (view from top, connector at the bottom)
@@ -118,9 +118,15 @@ struct sensordata
   * \-----------------/
   *    |  |  |  |  |
   *   Vo Rx Tx NC HD
+  * 
+  *       [Connector]
   */
 
+
+  #ifndef SOFTWARESERIAL_H
   #include <SoftwareSerial.h>
+  #define SOFTWARESERIAL_H
+  #endif
 
   SoftwareSerial mhz19_swSerial;
   #define BAUD_RATE_MHZ19 9600
@@ -133,6 +139,31 @@ struct sensordata
   int mhz19_readValue_reimplemented(Stream *_streamRef, MHZ19 *_mhz19Ref); //declare function
 #endif
 
+
+#ifdef SENSOR_SDS018
+  struct sensordata dataSDS018_pm25;
+  struct sensordata dataSDS018_pm10;
+
+  //SDS18 dust sensor for 2.5µm and 10µm
+  //Needs 5V
+
+  bool sds018_dustok=false;
+  float value_pm25=-1;
+  float value_pm10=-1;
+
+  #ifndef SOFTWARESERIAL_H
+  #include <SoftwareSerial.h>
+  #define SOFTWARESERIAL_H
+  #endif
+
+  SoftwareSerial sds018_swSerial;
+  #define BAUD_RATE_SDS018 9600
+
+  unsigned long lastread_sds018=0; //to save last read time for both readings
+
+  void readSDS018();
+#endif
+
 // data/homie/config.json hochladen mit platformio run --target uploadfs
 // config contains homie device name, mqtt ip and wifi credentials
 
@@ -251,6 +282,17 @@ void setup() {
     }
   #endif
 
+  #ifdef SENSOR_SDS018
+    Serial.println("initializing sds018");
+    sds018_swSerial.begin(BAUD_RATE_SDS018, SWSERIAL_8N1, SDS018_SERIAL_RX, SDS018_SERIAL_TX, false, 256);
+    #ifdef dataSDS018_pm25_minchange
+      dataSDS018_pm25.minchange=dataSDS018_pm25_minchange;
+    #endif
+    #ifdef dataSDS018_pm10_minchange
+      dataSDS018_pm10.minchange=dataSDS018_pm10_minchange;
+    #endif
+  #endif
+
   
   Homie_setFirmware(FW_NAME, FW_VERSION);
   Homie_setBrand(FW_NAME);
@@ -290,6 +332,11 @@ void setup() {
   #ifdef SENSOR_MHZ19
     sensorNode.advertise("co2");
   #endif
+
+  #ifdef SENSOR_SDS018
+    sensorNode.advertise("dust_pm25");
+    sensorNode.advertise("dust_pm10");
+  #endif
   
 
   Serial.println("connecting..");
@@ -547,7 +594,74 @@ void loop_MHZ19()
 }
 #endif
 
+#ifdef SENSOR_SDS018
+void loop_SDS018_pm25()
+{
+  sensordata &d=dataSDS018_pm25;
 
+  bool _changed=false;
+  if (millis() >= (d.lastreadtime+d.readdelay)) {
+    if (millis() >= (lastread_sds018+d.readdelay)) {
+      readSDS018(); //reads values into value_pm25 und value_pm10
+    }
+    //Homie.getLogger() << "read pm25: " << value_pm25 << ".read pm10: " << value_pm10 << " status=" << dust_ok << endl;
+    if (fabs(d.lastsentvalue-value_pm25)>=d.minchange){
+      _changed=true;
+    }
+    d.lastreadtime=millis();
+  }
+
+  if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
+    Serial.print("Sending SDS018_pm25. reason=");
+    if (_changed) Serial.println("change"); else Serial.println("time");
+    checkESPStatus();
+
+    Homie.getLogger() << "read pm25: " << value_pm25 << " status=" << sds018_dustok << endl;
+    if (sds018_dustok){ //send no dust values if sensor not ok
+      sensorNode.setProperty("dust_pm25").send(String(value_pm25));
+    }else{
+      Homie.getLogger() << "sds018 dust not ok. didnt sent" << endl;
+    }
+    
+    d.lastsentvalue=value_pm25;
+    
+    d.lastsent=millis();
+  }
+}
+void loop_SDS018_pm10()
+{
+  sensordata &d=dataSDS018_pm10;
+
+  bool _changed=false;
+  if (millis() >= (d.lastreadtime+d.readdelay)) {
+    if (millis() >= (lastread_sds018+d.readdelay)) {
+      readSDS018(); //reads values into value_pm25 und value_pm10
+    }
+    //Homie.getLogger() << "read pm25: " << value_pm25 << ".read pm10: " << value_pm10 << " status=" << dust_ok << endl;
+    if (fabs(d.lastsentvalue-value_pm10)>=d.minchange){
+      _changed=true;
+    }
+    d.lastreadtime=millis();
+  }
+
+  if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
+    Serial.print("Sending SDS018_pm10. reason=");
+    if (_changed) Serial.println("change"); else Serial.println("time");
+    checkESPStatus();
+
+    Homie.getLogger() << "read pm10: " << value_pm10 << " status=" << sds018_dustok << endl;
+    if (sds018_dustok){ //send no dust values if sensor not ok
+      sensorNode.setProperty("dust_pm10").send(String(value_pm10));
+    }else{
+      Homie.getLogger() << "sds018 dust not ok. didnt sent" << endl;
+    }
+    
+    d.lastsentvalue=value_pm10;
+    
+    d.lastsent=millis();
+  }
+}
+#endif
      
 
 
@@ -579,8 +693,10 @@ void loopHandler() {
     loop_MHZ19();
   #endif
 
-
+  #ifdef SENSOR_SDS018
-  
+    loop_SDS018_pm25();
+    loop_SDS018_pm10();
+  #endif 
 
   
 
@@ -671,4 +787,50 @@ int mhz19_readValue_reimplemented(Stream *_streamRef, MHZ19 *_mhz19Ref) { //same
 
   return co2;
 }
+#endif
+
+#ifdef SENSOR_SDS018
+void readSDS018() 
+{
+  lastread_sds018=millis();
+  // https://github.com/crystaldust/sds018/blob/master/sds018.ino
+  uint8_t mData = 0;
+  uint8_t mPkt[10] = {0};
+  uint8_t mCheck = 0;
+  while( sds018_swSerial.available() > 0 ) {
+    //Serial.println("serial available");
+    for( int i=0; i<10; ++i ) {
+      mPkt[i] = sds018_swSerial.read();
+      //Serial.println( mPkt[i], HEX );
+    }
+    if( 0xC0 == mPkt[1] ) {
+      Serial.println("read density");
+      // Read dust density.
+      // Check
+      uint8_t sum = 0;
+      for( int i=2; i<=7; ++i ) {
+        sum += mPkt[i];
+      }
+      if( sum == mPkt[8] ) {
+        uint8_t pm25Low   = mPkt[2];
+        uint8_t pm25High  = mPkt[3];
+        uint8_t pm10Low   = mPkt[4];
+        uint8_t pm10High  = mPkt[5];
+  
+        value_pm25 = ( ( pm25High * 256.0 ) + pm25Low ) / 10.0;
+        value_pm10 = ( ( pm10High * 256.0 ) + pm10Low ) / 10.0;
+
+        sds018_dustok=true;
+        
+        /*Serial.print( "PM2.5: " );
+        Serial.print( pm25 );
+        Serial.print( "\nPM10 :" );
+        Serial.print( pm10 );
+        Serial.println();*/
+      }
+    }
+    
+    sds018_swSerial.flush();
+  }
+}
 #endif