add vl6180 as waterlevel sensor

include/waterlevel.h

@@ -1,12 +1,17 @@
 #ifndef _WATERLEVEL_H_
 #define _WATERLEVEL_H_
 
+#include <Wire.h>
+#include <VL6180X.h>
 
-#include <HCSR04.h>
+
-#define HCSR04_PIN_ECHO 17
+VL6180X sensor;
-#define HCSR04_PIN_TRIGGER 16
+// To try different scaling factors, change the following define.
-#define HCSR04_TIMEOUT 5000 //default is 100000 (uS)
+// Valid scaling factors are 1, 2, or 3.
-#define READINTERVAL_HCSR04 200
+#define SCALING 1
+
+
+#define READINTERVAL_WATERLEVEL 200
 
 #define WATERLEVELMEAN_SIZE 32
 #define WATERLEVELMEAN_FILTER_CUTOFF 8 //max value is around WATERLEVELMEAN_SIZE/2
@@ -16,13 +21,10 @@ uint16_t waterlevelMean_array_pos=0;
 float waterlevel=WATERLEVEL_UNAVAILABLE;  //distance from floor to water surface [mm]
 float watervolume=WATERLEVEL_UNAVAILABLE; //calculated Volume in Reservoir
 
-uint16_t waterlevel_failcounter=0;
-#define WATERLEVEL_MAXFAILS 15 //maximum counter value
-#define WATERLEVEL_FAILTHRESHOLD 10 //if failcounter is greater or equal this value waterlevel will not be valid
 
 //Calibration
 float waterlevel_calib_offset_measured=0; //Sollwert
-float waterlevel_calib_offset_sensor=178.67; //Istwert
+float waterlevel_calib_offset_sensor=0; //Istwert
 
 float waterlevel_calib_reservoirArea=27*36.5; //area in cm^2
 
@@ -32,8 +34,13 @@ float waterlevel_heightToVolume(float distance);
 
 void waterlevel_setup() {
 
-  //HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO);
+  Wire.begin();
-  HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO,HCSR04_TIMEOUT, HCSR04.eUltraSonicUnlock_t::unlockSkip);
+
+  sensor.init();
+  sensor.configureDefault();
+  sensor.setScaling(SCALING);
+  sensor.setTimeout(500);
+
   for (uint16_t i=0;i<WATERLEVELMEAN_SIZE;i++) {
     waterlevelMean_array[i]=-1; //-1 is also timeout value
     
@@ -42,33 +49,21 @@ void waterlevel_setup() {
 
 void waterlevel_loop(unsigned long loopmillis) {
 
-  static unsigned long last_read_hcsr04;
+  static unsigned long last_read_waterlevel;
-  if (loopmillis>=last_read_hcsr04+READINTERVAL_HCSR04) {
+  if (loopmillis>=last_read_waterlevel+READINTERVAL_WATERLEVEL) {
-    last_read_hcsr04=loopmillis;
+    last_read_waterlevel=loopmillis;
-    float temperature=20.0;
+    
-    if (tempCmean_air!=DEVICE_DISCONNECTED_C) { //sensor ok
+    
-      temperature=tempCmean_air;
+    uint16_t distance=sensor.readRangeSingleMillimeters();
-    }
     
-    double* distances = HCSR04.measureDistanceMm(temperature);
-    double distance=distances[0];
     //Serial.print("Distance reading:"); Serial.println(distance);
 
     if (distance!=WATERLEVEL_UNAVAILABLE) { //successful
       waterlevelMean_array[waterlevelMean_array_pos]=distance;
       waterlevelMean_array_pos++;
       waterlevelMean_array_pos%=WATERLEVELMEAN_SIZE;
-      if (waterlevel_failcounter>0) { //reduce failcounter if sucessfull
-        waterlevel_failcounter--;
-      }
-    }else{
-      if (waterlevel_failcounter<WATERLEVEL_MAXFAILS) {
-        waterlevel_failcounter++;
-      }
-      
     }
 
-    
     if (isValueArrayOKf(waterlevelMean_array,WATERLEVELMEAN_SIZE,WATERLEVEL_UNAVAILABLE)){
       //float _distance=getFilteredf(waterlevelMean_array,WATERLEVELMEAN_SIZE,WATERLEVELMEAN_FILTER_CUTOFF);
       float _distance=getMaxf(waterlevelMean_array,WATERLEVELMEAN_SIZE);
@@ -81,13 +76,6 @@ void waterlevel_loop(unsigned long loopmillis) {
       //Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE)-getMinf(waterlevelMean,WATERLEVELMEAN_SIZE))/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]"); 
     }
 
-    if (waterlevel_failcounter>=WATERLEVEL_FAILTHRESHOLD) { //too many failed readings
-      waterlevel=WATERLEVEL_UNAVAILABLE;
-      watervolume=WATERLEVEL_UNAVAILABLE;
-      /*if (debug) {
-        Serial.print("Waterlevel Failcounter="); Serial.println(waterlevel_failcounter);
-      }*/
-    }
 
   }
 }

platformio.ini

@@ -17,7 +17,7 @@ monitor_speed = 115200
 
 lib_deps =
     https://github.com/milesburton/Arduino-Temperature-Control-Library/
-    d03n3rfr1tz3/HC-SR04@^1.1.2
     https://github.com/emilv/ArduinoSort/
     robtillaart/ADS1X15@^0.3.9
-    256dpi/MQTT@^2.5.1
+    256dpi/MQTT@^2.5.1
+    https://github.com/pololu/vl6180x-arduino

src/main.cpp

@@ -5,6 +5,7 @@
 #include "wifi_functions.h"
 
 bool debug=true; //print Serial information
+bool mqtt=false;
 
 
 
@@ -26,7 +27,7 @@ ADS1115 ADS(0x48);
 
 
 // ######## Water Level
-//#include "waterlevel.h"
+#include "waterlevel.h"
 
 
 // ######## Flow Rate
@@ -55,10 +56,12 @@ void setup() {
   pinMode(PIN_LED,OUTPUT);
   digitalWrite(PIN_LED,LOW);
   Serial.begin(115200);
-  WiFi.begin(ssid, pass);
+  if (mqtt) {
-  client.begin(mqtt_host, net);
+    WiFi.begin(ssid, pass);
-  client.onMessage(messageReceived);
+    client.begin(mqtt_host, net);
-  connect();
+    client.onMessage(messageReceived);
+    connect();
+  }
 
   //init ADS1115
   if (!ADS.begin()) {
@@ -70,8 +73,8 @@ void setup() {
   Serial.println("Setup EC");
   ec_setup();
 
-  //Serial.println("Setup Waterlevel");
+  Serial.println("Setup Waterlevel");
-  //waterlevel_setup();
+  waterlevel_setup();
 
   Serial.println("Setup Temperature");
   temperature_setup();
@@ -113,7 +116,7 @@ void loop() {
 
   temperature_loop(loopmillis);
   
-  //waterlevel_loop(loopmillis);
+  waterlevel_loop(loopmillis);
 
   flow_loop(loopmillis);
 
@@ -145,16 +148,11 @@ void loop() {
   if (loopmillis>last_check+2000) {  //check values
   
     last_check=loopmillis;
-
-
-
     
     if (tempCmean_air==DEVICE_DISCONNECTED_C || tempCmean_reservoir==DEVICE_DISCONNECTED_C || tempCmean_case==DEVICE_DISCONNECTED_C) {
       valueError=true;
     }
-    //if (waterlevel==WATERLEVEL_UNAVAILABLE) {
+    
-    //  valueError=true;
-    //}
     if (sm_mean1==SM_DISCONNECTED || sm_mean2==SM_DISCONNECTED) {
       valueError=true;
     }
@@ -165,8 +163,7 @@ void loop() {
 
     digitalWrite(PIN_LED,valueError);
 
-
+   
-    
 
     if (debug) {
       Serial.println("_______________________");
@@ -216,10 +213,10 @@ void loop() {
       Serial.print(ec25); 
       Serial.println();
 
-      /*Serial.print("Waterlevel distance,volume = "); Serial.print(waterlevel); Serial.print(","); Serial.print(watervolume);
+      Serial.print("Waterlevel,Volume = ");
-      if (waterlevel_failcounter>0) {
+      Serial.print(waterlevel); Serial.print(",");
-        Serial.print(" fails="); Serial.print(waterlevel_failcounter);
+      Serial.print(watervolume);
-      }*/
+
       Serial.println();    
 
 
@@ -229,7 +226,7 @@ void loop() {
     }
 
 
-    if (mqtt_loop(loopmillis)) {
+    if (mqtt && mqtt_loop(loopmillis)) {
       if (sendallnext_flag) {
         sendallnext_flag=false;
         enableTiming=false;