include/ec.h

@@ -2,12 +2,6 @@
 #define _EC_H_
 
 #include <Arduino.h>
-mqttValueTiming timing_ec_adc;
-mqttValueTiming timing_ec_calibadc;
-mqttValueTiming timing_ec_adcadjusted;
-mqttValueTiming timing_ec_ec;
-mqttValueTiming timing_ec_sc;
-
 
 
 bool ec_flag_measurement_available=false;
@@ -35,7 +29,7 @@ uint16_t ec_calib_array_pos=0;
 uint16_t ec_array[EC_ARRAY_SIZE];
 uint16_t ec_array_pos=EC_ARRAY_SIZE;
 unsigned long last_measurement_ec=0;
-#define EC_MEASUREMENT_INTERVAL 10*60*1000 //complete filtered measurement every x ms
+#define EC_MEASUREMENT_INTERVAL 30000 //complete filtered measurement every x ms
   //One filtered measurement takes EC_READ_INTERVAL*EC_ARRAY_SIZE*4
 #define EC_READ_INTERVAL 10 //interval of reading adc value inside a measurement. one reading takes about 9-10ms
 
@@ -79,33 +73,6 @@ float ec_getECfromADC(float adc);
 float ec_calculateEC25(float pEC,float pTemp);
 
 void ec_setup() {
-  
-  timing_ec_adc.minchange=0.0;
-  timing_ec_adc.maxchange=250;
-  timing_ec_adc.mintime=10*000;
-  timing_ec_adc.maxtime=60*60*1000;
-
-  timing_ec_calibadc.minchange=0.0;
-  timing_ec_calibadc.maxchange=250;
-  timing_ec_calibadc.mintime=10*000;
-  timing_ec_calibadc.maxtime=60*60*1000;
-
-  timing_ec_adcadjusted.minchange=0.0;
-  timing_ec_adcadjusted.maxchange=2.0;
-  timing_ec_adcadjusted.mintime=10*000;
-  timing_ec_adcadjusted.maxtime=30*60*1000;
-
-  timing_ec_ec.minchange=0.0;
-  timing_ec_ec.maxchange=50;
-  timing_ec_ec.mintime=10*000;
-  timing_ec_ec.maxtime=60*60*1000;
-
-  timing_ec_sc.minchange=0.0;
-  timing_ec_sc.maxchange=50;
-  timing_ec_sc.mintime=10*000;
-  timing_ec_sc.maxtime=60*60*1000;
-
-
   ledcSetup(EC_PWM_CH, EC_FREQUENCY, EC_RESOLUTION);
   ledcAttachPin(EC_PIN_FREQ, EC_PWM_CH);
   ledcWrite(EC_PWM_CH, 127); //50% duty cycle
@@ -119,13 +86,11 @@ void ec_loop(unsigned long loopmillis) {
   
   static unsigned long last_read_ec=0;
 
-
   switch (ecstate) {
     case IDLE:
       
-      if (loopmillis>last_measurement_ec+EC_MEASUREMENT_INTERVAL || force_ec_measurement) { //start measurement if idle
+      if (loopmillis>last_measurement_ec+EC_MEASUREMENT_INTERVAL && ecstate==IDLE) { //start measurement if idle
         last_measurement_ec=loopmillis;
-        force_ec_measurement=false;
         ec_startMeasurement();
         ec_connectProbe(true);
         
@@ -170,7 +135,6 @@ void ec_loop(unsigned long loopmillis) {
         
         ec_array_pos++;
       }
-      
     }
   }else{ //measurement not running, then take calibration readings
     if (loopmillis>last_read_ec+EC_CALIB_READ_INTERVAL) { //take reading into array
@@ -184,9 +148,7 @@ void ec_loop(unsigned long loopmillis) {
         ec_calib_array_pos++;
         ec_calib_array_pos%=EC_CALIB_ARRAY_SIZE;
 
-        if (isValueArrayOK(ec_calib_array,EC_CALIB_ARRAY_SIZE,EC_ADC_UNAVAILABLE)){
+        
-          ec_calib_adc=getMean(ec_calib_array,EC_CALIB_ARRAY_SIZE);
-        }
       }
     }
   }
@@ -239,12 +201,7 @@ float ec_getECfromADC(float adc) {
 
     _ec=mapf(adc,x0,x1,y0,y1); //linear approximation    
   }
-  if (_ec>=0) {
   return _ec;
-  }else{
-    return 0;
-  }
-  
 }
 
 float ec_calculateEC25(float pEC,float pTemp) 

include/flow.h

@@ -1,8 +1,6 @@
 #ifndef _FLOW_H_
 #define _FLOW_H_
 
-mqttValueTiming timing_flow;
-
 #define FLOW_PIN 19
 uint16_t flow_counter=0; //maximum counts/s measured with Eden 128 Pump was 171
 void IRAM_ATTR isr_flow();
@@ -17,11 +15,6 @@ uint32_t flow_counter_sum=0;
 
 void flow_setup() {
 
-  timing_flow.minchange=0.0;
-  timing_flow.maxchange=0.5;
-  timing_flow.mintime=1*000;
-  timing_flow.maxtime=30*60*1000;
-
     pinMode(FLOW_PIN, INPUT_PULLUP);
     attachInterrupt(FLOW_PIN, isr_flow, CHANGE);
 }

include/soilmoisture.h

@@ -7,14 +7,11 @@
 
 #define READINTERVAL_SM 100
 
-mqttValueTiming timing_soilmoisture_sm1;
-mqttValueTiming timing_soilmoisture_sm2;
-mqttValueTiming timing_soilmoisture_sm3;
 
 //Calibration values
 //high=adc value for sensor in air
 //low=adc value for sensor in NaCl solution at 25°C with 12880 uS/cm
-float sm1_low=4555;
+float sm1_low=45555;
 float sm1_high=11799;
 float sm2_low=3235;
 float sm2_high=16050;
@@ -46,23 +43,6 @@ uint8_t sm_readchannel=0;
 
 
 void sm_setup() {
-
-  timing_soilmoisture_sm1.minchange=0.0;
-  timing_soilmoisture_sm1.maxchange=0.05;
-  timing_soilmoisture_sm1.mintime=2*1000;
-  timing_soilmoisture_sm1.maxtime=60*60*1000;
-
-  timing_soilmoisture_sm2.minchange=0.0;
-  timing_soilmoisture_sm2.maxchange=0.05;
-  timing_soilmoisture_sm2.mintime=2*1000;
-  timing_soilmoisture_sm2.maxtime=60*60*1000;
-
-  timing_soilmoisture_sm3.minchange=0.0;
-  timing_soilmoisture_sm3.maxchange=0.05;
-  timing_soilmoisture_sm3.mintime=2*1000;
-  timing_soilmoisture_sm3.maxtime=60*60*1000;
-
-
   for (uint16_t i=0;i<SM_SIZE;i++) {
     sm_mean1array[i]=SM_DISCONNECTED;
     sm_mean2array[i]=SM_DISCONNECTED;

include/temperature.h

@@ -2,9 +2,6 @@
 #define _TEMPERATURE_H_
 
 
-mqttValueTiming timing_temperature_reservoir;
-mqttValueTiming timing_temperature_air;
-
 #include <OneWire.h>
 #include <DallasTemperature.h>
 
@@ -41,15 +38,6 @@ float tempCmean_air=DEVICE_DISCONNECTED_C;
 
 
 void temperature_setup() {
-  timing_temperature_reservoir.minchange=0.0;
-  timing_temperature_reservoir.maxchange=0.5;
-  timing_temperature_reservoir.mintime=2*1000;
-  timing_temperature_reservoir.maxtime=60*60*1000;
-
-  timing_temperature_air.minchange=0.0;
-  timing_temperature_air.maxchange=0.5;
-  timing_temperature_air.mintime=2*1000;
-  timing_temperature_air.maxtime=60*60*1000;
 
   //initialize mean array
   for (uint16_t i=0;i<TEMPMEAN_SIZE;i++) {

include/wifi_functions.h

@@ -1,121 +0,0 @@
-
-#ifndef _WIFI_FUNCTIONS_H_
-#define _WIFI_FUNCTIONS_H_
-
-#include <WiFi.h>
-#include <MQTT.h>
-
-#include "wifi_settings.h"
-#include "helpfunctions.h"
-
-
-struct mqttValueTiming{
-    float minchange;
-    float maxchange;
-    unsigned long mintime;
-    unsigned long maxtime;
-    float lastvalue=0;
-    unsigned long lasttime=0;
-};
-
-
-WiFiClient net;
-MQTTClient client;
-
-bool sendallnext_flag=false;
-bool enableTiming=true;
-
-bool force_ec_measurement=false;
-
-void publishValueTimed(String topic,float value,uint8_t decimals,mqttValueTiming &mqttvt,unsigned long loopmillis);
-void publishValue(String topic,float value,uint8_t decimals);
-
-void connect() {
-  Serial.print("checking wifi...");
-  uint8_t timeout=0;
-  while (WiFi.status() != WL_CONNECTED && timeout<10) {
-    timeout++;
-    Serial.print(".");
-    delay(500);
-  }
-  
-  if (WiFi.status() == WL_CONNECTED)
-  {
-    Serial.print("\nconnecting...");
-    timeout=0;
-    #define CONNECT_TIMEOUT 5
-    while (!client.connect(client_id, "public", "public") && timeout<CONNECT_TIMEOUT) {
-        Serial.print(".");
-        delay(1000);
-        timeout++;
-    }
-    if (timeout>=CONNECT_TIMEOUT) {
-        Serial.println("\nconnection failed!");
-    }else{
-        Serial.println("\nconnected!");
-        client.subscribe((String)client_id+"/sendall");
-        client.subscribe((String)client_id+"/ec/trigger");
-        // client.unsubscribe("/hello");
-    }
-
-
-  }
-}
-
-
-void messageReceived(String &topic, String &payload) {
-  Serial.println("incoming: " + topic + " - " + payload);
-  if (topic==((String)client_id+"/sendall") && payload=="true") {
-    sendallnext_flag=true;
-    Serial.println("Send all values next time");
-  }
-  if (topic==((String)client_id+"/ec/trigger") && payload=="true") {
-    force_ec_measurement=true; 
-    Serial.println("Forced EC Measurement");
-  }
-}
-
-bool mqtt_loop(unsigned long loopmillis) {
-    static unsigned long last_client_loop=0;
-    #define CLIENT_LOOP_INTERVAL 10 //ms. fixes some wifi issues. from example https://registry.platformio.org/libraries/256dpi/MQTT/examples/ESP32DevelopmentBoard/ESP32DevelopmentBoard.ino
-    if (loopmillis >= last_client_loop+CLIENT_LOOP_INTERVAL) {
-        last_client_loop=loopmillis;
-        client.loop();
-
-        static unsigned long last_connection_try=0;
-        #define RETRY_CONNECTION 60000
-        if (!client.connected()) {
-            if (loopmillis-last_connection_try>RETRY_CONNECTION) {
-                connect();
-            }
-        }else{
-            return true;
-        }
-    }
-    return false;
-}
-
-void publishValueTimed(String topic,float value,uint8_t decimals,mqttValueTiming &mqttvt,unsigned long loopmillis) {
-    unsigned long timediff=loopmillis-mqttvt.lasttime;
-    float valuediff=abs(value-mqttvt.lastvalue);
-    valuediff=constrain(valuediff,mqttvt.minchange,mqttvt.maxchange);
-    unsigned long sendafter=mapf(valuediff,mqttvt.minchange,mqttvt.maxchange,mqttvt.maxtime,mqttvt.mintime); //map valuediff to time when to send
-    /*Serial.println();
-    Serial.print("timediff="); Serial.print(timediff);
-    Serial.print(" valuediff="); Serial.print(valuediff);
-    Serial.print(" sendafter="); Serial.println(sendafter);*/
-    if (timediff>=sendafter || !enableTiming) {
-        mqttvt.lasttime=loopmillis;
-        mqttvt.lastvalue=value;
-        publishValue(topic,value,decimals);
-    }
-}
-
-void publishValue(String topic,float value,uint8_t decimals) {
-    char buffer[16];
-    dtostrf(value,1,decimals,buffer);
-    client.publish((String)client_id+"/"+topic, buffer);
-    Serial.print("Publish Topic="); Serial.print((String)client_id+"/"+topic); Serial.print(" Message="); Serial.println(buffer);
-}
-
-#endif

include/wifi_settings.h

@@ -1,6 +0,0 @@
-
-const char ssid[] = "";
-const char pass[] = "";
-const char mqtt_host[] = "10.0.0.1";
-
-const char client_id[] = "hydroponic";

platformio.ini

@@ -20,4 +20,3 @@ lib_deps =
     d03n3rfr1tz3/HC-SR04@^1.1.2
     https://github.com/emilv/ArduinoSort/
     robtillaart/ADS1X15@^0.3.9
-    256dpi/MQTT@^2.5.1

src/main.cpp

@@ -1,13 +1,7 @@
 #include <Arduino.h>
 
-
-
-#include "wifi_functions.h"
-
 bool debug=true; //print Serial information
 
-
-
 #include "helpfunctions.h"
 #include "ADS1X15.h"
 
@@ -17,16 +11,13 @@ ADS1115 ADS(0x48);
 // ######## Temperature
 #include "temperature.h"
 
-
-
-
 // ######## EC
 #include "ec.h"
 
 
 
 // ######## Water Level
-//#include "waterlevel.h"
+#include "waterlevel.h"
 
 
 // ######## Flow Rate
@@ -36,8 +27,6 @@ ADS1115 ADS(0x48);
 #include "soilmoisture.h"
 
 
-
-
 unsigned long last_check=0;
 
 
@@ -55,10 +44,6 @@ void setup() {
   pinMode(PIN_LED,OUTPUT);
   digitalWrite(PIN_LED,LOW);
   Serial.begin(115200);
-  WiFi.begin(ssid, pass);
-  client.begin(mqtt_host, net);
-  client.onMessage(messageReceived);
-  connect();
 
   //init ADS1115
   if (!ADS.begin()) {
@@ -70,8 +55,8 @@ 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();
@@ -79,9 +64,6 @@ void setup() {
   Serial.println("Setup Flow");
   flow_setup();
 
-  Serial.println("Setup Soilmoisture");
-  sm_setup();
-
   Serial.println("Finished Setup");
   delay(200);
 
@@ -100,20 +82,18 @@ void setup() {
 
 
   //Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted,EC,EC25");
-  //Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted");
+  Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted");
 
 }
 
 void loop() {
   unsigned long loopmillis=millis();
-  enableTiming=true; //reactivate
-  
   
   ec_loop(loopmillis);
 
   temperature_loop(loopmillis);
   
-  //waterlevel_loop(loopmillis);
+  waterlevel_loop(loopmillis);
 
   flow_loop(loopmillis);
 
@@ -123,13 +103,18 @@ void loop() {
   static bool getReading=false;
 
   if (!digitalRead(PIN_BUTTON)) {
+    last_check=loopmillis;
     valueError=false;
-    Serial.println("Reset ValueError flag by user");
+    //Serial.println("Reset ValueError flag by user");
-    digitalWrite(PIN_LED,valueError);
+    //digitalWrite(PIN_LED,valueError);
     delay(100);
+    last_measurement_ec=0; //force reading
+    getReading=true;
+    ec_flag_measurement_available=false;
+    digitalWrite(PIN_LED,HIGH);
+
   }
 
-  /*
   if (ec_flag_measurement_available && getReading) {
     ec_flag_measurement_available=false;
     getReading=false;
@@ -140,7 +125,7 @@ void loop() {
     Serial.print(ec_adc); Serial.print(",");
     Serial.print(ec_adc_adjusted);
     Serial.println();
-  }*/
+  }
   
   if (loopmillis>last_check+2000) {  //check values
   
@@ -152,9 +137,9 @@ void loop() {
     if (tempCmean_air==DEVICE_DISCONNECTED_C || tempCmean_reservoir==DEVICE_DISCONNECTED_C) {
       valueError=true;
     }
-    //if (waterlevel==WATERLEVEL_UNAVAILABLE) {
+    if (waterlevel==WATERLEVEL_UNAVAILABLE) {
-    //  valueError=true;
+      valueError=true;
-    //}
+    }
     if (sm_mean1==SM_DISCONNECTED || sm_mean2==SM_DISCONNECTED) {
       valueError=true;
     }
@@ -216,66 +201,77 @@ void loop() {
       Serial.print(ec25); 
       Serial.println();
 
-      /*Serial.print("Waterlevel distance,volume = "); Serial.print(waterlevel); Serial.print(","); Serial.print(watervolume);
+      Serial.print("Waterlevel distance,volume = "); Serial.print(waterlevel); Serial.print(","); Serial.print(watervolume);
       if (waterlevel_failcounter>0) {
         Serial.print(" fails="); Serial.print(waterlevel_failcounter);
-      }*/
+      }
+      Serial.println();     
+
+    }
+
+    
+
+
+
+
+    /*
+    Serial.print(millis()/1000.0,2); Serial.print(",");
+    
+    Serial.print(getMeanf(tempCmean_reservoir_array,TEMPMEAN_SIZE)); Serial.print(",");
+    //Serial.print(getMean(sm_mean,SM_SIZE)); Serial.print(",");
+    
+    Serial.print(ec_calib_adc); Serial.print(",");
+    Serial.print(ec_adc); Serial.print(",");
+    Serial.print(ec_adc_adjusted); Serial.print(",");
+    Serial.print(ec); Serial.print(",");
+    Serial.print(ec25);
+    Serial.print(getMean(sm_mean,SM_SIZE));
+    
+
+    
+    
     Serial.println();
 
     
 
-      
-
-    }
-
-
-    if (mqtt_loop(loopmillis)) {
-      if (sendallnext_flag) {
-        sendallnext_flag=false;
-        enableTiming=false;
-      }
-
     if (tempCmean_reservoir!=DEVICE_DISCONNECTED_C){
-        publishValueTimed("temperature/reservoir",tempCmean_reservoir,2,timing_temperature_reservoir,loopmillis); 
+      Serial.print("\t Treservoir="); Serial.print(tempCmean_reservoir); Serial.print("\t Tair="); Serial.print(tempCmean_air);
-      }
+    }else{
-      if (tempCmean_air!=DEVICE_DISCONNECTED_C) {
+      Serial.print("\t waiting for temperature");
-        publishValueTimed("temperature/air",tempCmean_air,2,timing_temperature_air,loopmillis); 
-      }
-      if (sm_mean1!=SM_DISCONNECTED) {
-        publishValueTimed("soilmoisture/sm1",sm_mean1,3,timing_soilmoisture_sm1,loopmillis); 
-      }
-      if (sm_mean2!=SM_DISCONNECTED) {
-        publishValueTimed("soilmoisture/sm2",sm_mean2,3,timing_soilmoisture_sm2,loopmillis); 
-      }
-      if (sm_mean3!=SM_DISCONNECTED) {
-        publishValueTimed("soilmoisture/sm3",sm_mean3,3,timing_soilmoisture_sm3,loopmillis); 
-      }
-      
-      publishValueTimed("flow/flow",flow,2,timing_flow,loopmillis); 
-      
-
-      if (ec_adc!=0) {
-        publishValueTimed("ec/adc",ec_adc,0,timing_ec_adc,loopmillis); 
-      }
-      if (ec_calib_adc!=0) {
-        publishValueTimed("ec/eccalibadc",ec_calib_adc,0,timing_ec_calibadc,loopmillis); 
-      }
-      if (ec_adc_adjusted!=0) {
-        publishValueTimed("ec/adcadjusted",ec_adc_adjusted,0,timing_ec_adcadjusted,loopmillis); 
-      }
-      if (ec!=EC_UNAVAILABLE){
-        publishValueTimed("ec/ec",ec,0,timing_ec_ec,loopmillis); 
-        publishValueTimed("ec/sc",ec25,0,timing_ec_sc,loopmillis); 
-      }
     }
 
     
+    if (isValueArrayOKf(waterlevelMean,WATERLEVELMEAN_SIZE,-1.0)){
+      float _max=getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE);
+      float _min=getMinf(waterlevelMean,WATERLEVELMEAN_SIZE);
+
+      float _filteredWaterlevel=getFilteredf(waterlevelMean,WATERLEVELMEAN_SIZE,8);
+      float _meanWaterlevel=getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE);
+      
+
+      Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((_max-_min)/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]");
+      
+    }else{
+      Serial.print("\t waiting for distance");
+    }
+
+    Serial.print("\t Flow="); Serial.print(flow,2);
+    Serial.print("\t Flowsum="); Serial.print(flow_counter_sum);
     
     
 
+    Serial.println();   
+    */
     
       
     
   }
   
 }
+
+
+
+/*
+TODO:
+- recalibrate EC. Note min max (shorted, open) values. Test screw terminal connection. Recalibrate EC Probe.
+*/