analog water measurement added

esp32/include/ControllerConfiguration.h

@@ -64,10 +64,13 @@
 
 #define OUTPUT_ENABLE_SENSOR GPIO_NUM_14 /**< GPIO 14 - Enable Sensors  */
 #define OUTPUT_ENABLE_PUMP   GPIO_NUM_13 /**< GPIO 13 - Enable Pumps  */
-
 #define SENSOR_ONEWIRE      GPIO_NUM_4 /**< GPIO 12 - Temperatur sensor, Battery and other cool onewire stuff */
+#ifdef ANALOG_WATER
+#define SENSOR_TANK_ANALOG     ANALOG_WATER /**< GPIO 34 - analog water sensor (GPIO_NUM_34) */ 
+#else
 #define SENSOR_TANK_SDA     GPIO_NUM_17 /**< GPIO 17 - water sensor SDA */ 
 #define SENSOR_TANK_SCL     GPIO_NUM_16 /**< GPIO 16 - water sensor SCL */
+#endif
 #define BUTTON              GPIO_NUM_0  /**< GPIO 0 - Fix button of NodeMCU */
 
 #define CUSTOM1_PIN1        GPIO_NUM_34   /** direct gpio */
@@ -85,7 +88,11 @@
     #define FLOWMETER_PULSES_PER_ML 2.2
     #define FIRMWARE_FEATURE1   "Flow"
 #else
+    #ifdef ANALOG_WATER
+    #define FIRMWARE_FEATURE1   "Water"
+    #else
     #define FIRMWARE_FEATURE1   ""
+    #endif
 #endif
 
 #ifdef TIMED_LIGHT_PIN
@@ -96,7 +103,7 @@
 
 #define FIRMWARE_BASENAME "PlantControl"
 #define FIRMWARE_NAME FIRMWARE_BASENAME FIRMWARE_FEATURE1 FIRMWARE_FEATURE2
-#define FIRMWARE_VERSION "2.71 HW0.10b" 
+#define FIRMWARE_VERSION "3.00 HW0.10b" 
 
 #define MOIST_SENSOR_MAX_FRQ               5200 // 60kHz (500Hz margin)
 #define MOIST_SENSOR_MIN_FRQ                500 // 0.5kHz (500Hz margin)
@@ -110,6 +117,7 @@
 
 #define MQTT_TIMEOUT                (1000 * 60) /**< After 10 seconds, MQTT is expected to be connected */
 #define ESP_STALE_TIMEOUT           (MQTT_TIMEOUT+(700*1000))
+#define ESP_ADC_MAX                 4095
 
 #define MAX_PLANTS          7
 #define SOLAR_CHARGE_MIN_VOLTAGE    7   /**< Sun is rising (morning detected) */
@@ -120,6 +128,8 @@
 #define LOWVOLT_SLEEP_FACTOR        3       /**< Factor for nightsleep delay, if the battery drops below minimum (@see VOLT_MIN_BATT) */
 #define LOWVOLT_SLEEP_MINIMUM       1800    /**< At low voltage sleep at least for 30 minutes */
 
+#define WATER_LEVEL_MINIMUM         500      /**< Minimum Analog value (1023 is the maximum)*/
+
 #define MAX_CONFIG_SETTING_ITEMS 100 /**< Parameter, that can be configured in Homie */
 #define MAX_JSON_CONFIG_FILE_SIZE_CUSTOM 2500
 

esp32/include/HomieConfiguration.h

@@ -75,9 +75,6 @@ HomieNode stayAlive("stay", "alive", "alive");  /**< Necessary for Mqtt Active C
 HomieSetting<long> deepSleepTime("sleep", "time in seconds to sleep");
 HomieSetting<long> deepSleepNightTime("nightsleep", "time in seconds to sleep (0 uses same setting: deepsleep at night, too)");
 HomieSetting<long> pumpIneffectiveWarning("pumpConsecutiveWarn", "if the pump was triggered this amount directly after each cooldown, without resolving dryness, warn");
-HomieSetting<long> waterLevelMax("tankmax", "distance (mm) at maximum water level");
-HomieSetting<long> waterLevelMin("tankmin", "distance (mm) at minimum water level (pumps still covered)");
-HomieSetting<long> waterLevelWarn("tankwarn", "warn (mm) if below this water level %");
 HomieSetting<long> waterLevelVol("tankVolume", "(ml) between minimum and maximum");
 HomieSetting<const char *> lipoSensorAddr("lipoDSAddr", "1wire address for lipo temperature sensor");
 HomieSetting<const char *> waterSensorAddr("tankDSAddr", "1wire address for water temperature sensor");

esp32/platformio.ini

@@ -22,6 +22,7 @@ build_flags = -DPIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
     -DPLANT6_SENSORTYPE=FREQUENCY_MOD_RESISTANCE_PROBE
     -DTIMED_LIGHT_PIN=CUSTOM1_PIN5
     -DFLOWMETER_PIN=CUSTOM1_PIN1
+    -DANALOG_WATER=GPIO_NUM_34
 
 board_build.partitions = defaultWithSmallerSpiffs.csv
 

esp32/src/main.cpp

@@ -51,7 +51,10 @@ extern "C" bool verifyRollbackLater(){
  *                                     DEFINES
  ******************************************************************************/
 #define AMOUNT_SENOR_QUERYS 8
+#ifdef ANALOG_WATER
+#else
 #define MAX_TANK_DEPTH 5000
+#endif
 #define REBOOT_LOOP_DETECTION_ERROR 5
 
 /******************************************************************************
@@ -354,68 +357,35 @@ void readPowerSwitchedSensors()
     Plant plant = mPlants[i];
     switch (plant.getSensorMode())
     {
-      case FREQUENCY_MOD_RESISTANCE_PROBE: {
+      case FREQUENCY_MOD_RESISTANCE_PROBE:
         Serial << "Plant " << i << " measurement: " << mPlants[i].getCurrentMoistureRaw() << " hz " << mPlants[i].getCurrentMoisturePCT() << "%" <<  endl;
         break;
-      }
+      case ANALOG_RESISTANCE_PROBE :
-      case ANALOG_RESISTANCE_PROBE : {
         Serial << "Plant " << i << " measurement: " << mPlants[i].getCurrentMoistureRaw() << " mV " << mPlants[i].getCurrentMoisturePCT() << "%" <<  endl;
         break;
-      }
+      default:
-      case NONE : {
+      case NONE:
-
+        break;
-      }
     }
   }
 
-  Wire.begin(SENSOR_TANK_SDA, SENSOR_TANK_SCL);
+  #ifdef ANALOG_WATER
-  // Source: https://www.st.com/resource/en/datasheet/vl53l0x.pdf
+  Serial << "Analog water measurement " << WATERSENSOR_CYCLE << " cycles.." <<  endl;
-  tankSensor.setAddress(0x52);
+  Serial.flush();
-  tankSensor.setBus(&Wire);
-  delay(50);
-  Serial << "Distance sensor init" << endl;
-  long start = millis();
-  bool distanceReady = false;
-  while ((start + WATERSENSOR_TIMEOUT) > millis())
-  {
-    if (tankSensor.init())
-    {
-      distanceReady = true;
-      break;
-    }
-    else
-    {
-      delay(200);
-    }
-  }
-  if (distanceReady)
-  {
-    waterRawSensor.clear();
-    tankSensor.setSignalRateLimit(0.1);
-    // increase laser pulse periods (defaults are 14 and 10 PCLKs)
-    tankSensor.setVcselPulsePeriod(VL53L0X::VcselPeriodPreRange, 18);
-    tankSensor.setVcselPulsePeriod(VL53L0X::VcselPeriodFinalRange, 14);
-    tankSensor.setMeasurementTimingBudget(200000);
-    Serial << "Distance sensor measuring" << endl;
-    for (int readCnt = 0; readCnt < WATERSENSOR_CYCLE; readCnt++)
   
-    {
+  /* Read analog Water sensor*/
-      if (!tankSensor.timeoutOccurred())
+  for(int i=0; i < WATERSENSOR_CYCLE; i++)
-      {
-        uint16_t distance = tankSensor.readRangeSingleMillimeters();
-        if (distance < MAX_TANK_DEPTH)
-        {
-          waterRawSensor.add(distance);
-        }
-      }
-      delay(50);
-    }
-    Serial << "Distance sensor " << waterRawSensor.getMedian() << " mm" << endl;
-  }
-  else
   {
-    log(LOG_LEVEL_WARN, LOG_TANKSENSOR_FAIL_DETECT, LOG_TANKSENSOR_FAIL_DETECT_CODE);
+    int value = analogRead(SENSOR_TANK_ANALOG);
+    Serial << "Round " << i << " measurement: " << value << " mV " <<  endl;
+    waterRawSensor.add(value);
+    delay(5);
   }
+  Serial << "Analog water measurement done" <<  endl;
+  #else
+  Serial << "Analog water measurement deactivated" <<  endl;
+  #endif
+  Serial.flush();
 
   /* deactivate the sensors */
   digitalWrite(OUTPUT_ENABLE_SENSOR, LOW);
@@ -792,6 +762,10 @@ void safeSetup()
 
   pinMode(OUTPUT_ENABLE_SENSOR, OUTPUT);
 
+  #ifdef ANALOG_WATER
+  pinMode(SENSOR_TANK_ANALOG, INPUT);
+  #endif
+
   static_assert(HomieInternals::MAX_CONFIG_SETTING_SIZE >= MAX_CONFIG_SETTING_ITEMS, "Limits.hpp not adjusted MAX_CONFIG_SETTING_ITEMS");
   if (HomieInternals::MAX_CONFIG_SETTING_SIZE < MAX_CONFIG_SETTING_ITEMS)
   {
@@ -819,9 +793,6 @@ void safeSetup()
   deepSleepNightTime.setDefaultValue(600);
   ntpServer.setDefaultValue("pool.ntp.org");
 
-  /* waterLevelMax 1000    */          /* 100cm in mm */
-  waterLevelMin.setDefaultValue(50);   /* 5cm in mm */
-  waterLevelWarn.setDefaultValue(500); /* 50cm in mm */
   waterLevelVol.setDefaultValue(5000); /* 5l in ml */
   lipoSensorAddr.setDefaultValue("");
   waterSensorAddr.setDefaultValue("");
@@ -1082,7 +1053,7 @@ void plantcontrol()
 
   readOneWireSensors();
 
-  Serial << "W : " << waterRawSensor.getAverage() << " mm (" << String(waterLevelMax.get() - waterRawSensor.getAverage()) << " mm left)" << endl;
+  Serial << "W : " << waterRawSensor.getAverage() << " mm " << endl;
 
   mBatteryVoltage = battery.getVoltage(BATTSENSOR_INDEX_BATTERY);
   float chipTemp = battery.getTemperature();
@@ -1093,14 +1064,11 @@ void plantcontrol()
     /* Publish water values, if available */
     if (waterRawSensor.getCount() > 0)
     {
-      float remaining = (waterLevelMax.get() - waterRawSensor.getAverage());
-      if (!isnan(remaining))
-      {
-        /* measuring the distance from top -> smaller value means more water: */
-        sensorWater.setProperty("remaining").send(String(100.0 - (remaining/100)));
-      }
       if (!isnan(waterRawSensor.getAverage()))
       {
+        /* measuring the distance from top -> smaller value means more water: */
+        sensorWater.setProperty("remaining").send(String(100.0 * (waterRawSensor.getAverage()/ESP_ADC_MAX)));
+
         sensorWater.setProperty("distance").send(String(waterRawSensor.getAverage()));
       }
     }
@@ -1141,11 +1109,7 @@ bool isLowLight = (mSolarVoltage <= SOLAR_CHARGE_MAX_VOLTAGE);
   if (waterRawSensor.getCount() > 0)
   {
     //surface of water is still nearer the sensor than required to cover the pumps
-    hasWater = waterRawSensor.getAverage() < waterLevelMin.get();
+    hasWater = waterRawSensor.getAverage() > WATER_LEVEL_MINIMUM;
-    if (waterRawSensor.getAverage() > waterLevelMax.get()) {
-      log(LOG_LEVEL_ERROR, LOG_PUMP_FULLTANK_MESSAGE, LOG_PUMP_FULLTANK_CODE);
-      hasWater = true;
-    }
   }
 
   // FIXME no water warning message