add ambilight sensor class

ambilight_sensor.py

@@ -0,0 +1,34 @@
+from sensors import Sensors
+from machine import Pin, I2C
+from utime import sleep
+from lib.bh1750 import BH1750
+
+
+class AmbilightSensor(Sensors):
+
+
+    most_recent_values = []
+
+    def __init__(self, settings):
+        super().__init__(settings)
+        print(settings) # TODO remove
+        self.sensor_pin_int = settings['pin_int']
+        # self.sensor = DHT22(Pin(self.sensor_pin_int, Pin.IN, Pin.PULL_UP))
+        self.sensor = BH1750(I2C(0, sda=Pin(settings['pin_int_sda']), scl=Pin(settings['pin_int_scl'])))
+
+    def read(self):
+        try:
+            measurement = self.sensor.luminance(BH1750.ONCE_HIRES_1)
+            print("ambilight ..")
+            print(measurement)
+            self.most_recent_values = [
+                {
+                    'type': 'ambilight',
+                    'value': measurement,
+                    'unit': '-'
+                },
+            ]
+        except OSError:
+            print('Ambilight Error reading temperature/humidity. Check wires')
+            print()
+

bh1750.old_1/__init__.py

@@ -0,0 +1 @@
+from .bh1750 import BH1750

bh1750.old_1/bh1750.py

@@ -0,0 +1,118 @@
+# https://github.com/flrrth/pico-bh1750
+
+import math
+
+from micropython import const
+from utime import sleep_ms
+
+
+class BH1750:
+    """Class for the BH1750 digital Ambient Light Sensor
+
+    The datasheet can be found at https://components101.com/sites/default/files/component_datasheet/BH1750.pdf
+    """
+    
+    MEASUREMENT_MODE_CONTINUOUSLY = const(1)
+    MEASUREMENT_MODE_ONE_TIME = const(2)
+    
+    RESOLUTION_HIGH = const(0)
+    RESOLUTION_HIGH_2 = const(1)
+    RESOLUTION_LOW = const(2)
+    
+    MEASUREMENT_TIME_DEFAULT = const(69)
+    MEASUREMENT_TIME_MIN = const(31)
+    MEASUREMENT_TIME_MAX = const(254)
+
+    def __init__(self, address, i2c):
+        self._address = address
+        self._i2c = i2c
+        self._measurement_mode = BH1750.MEASUREMENT_MODE_ONE_TIME
+        self._resolution = BH1750.RESOLUTION_HIGH
+        self._measurement_time = BH1750.MEASUREMENT_TIME_DEFAULT
+        
+        self._write_measurement_time()
+        self._write_measurement_mode()
+        
+    def configure(self, measurement_mode: int, resolution: int, measurement_time: int):
+        """Configures the BH1750.
+
+        Keyword arguments:
+        measurement_mode -- measure either continuously or once
+        resolution -- return measurements in either high, high2 or low resolution
+        measurement_time -- the duration of a single measurement
+        """
+        if measurement_time not in range(BH1750.MEASUREMENT_TIME_MIN, BH1750.MEASUREMENT_TIME_MAX + 1):
+            raise ValueError("measurement_time must be between {0} and {1}"
+                             .format(BH1750.MEASUREMENT_TIME_MIN, BH1750.MEASUREMENT_TIME_MAX))
+        
+        self._measurement_mode = measurement_mode
+        self._resolution = resolution
+        self._measurement_time = measurement_time
+        
+        self._write_measurement_time()
+        self._write_measurement_mode()
+    
+    def _write_measurement_time(self):
+        buffer = bytearray(1)
+        
+        high_bit = 1 << 6 | self._measurement_time >> 5
+        low_bit = 3 << 5 | (self._measurement_time << 3) >> 3
+                
+        buffer[0] = high_bit
+        self._i2c.writeto(self._address, buffer)
+        
+        buffer[0] = low_bit
+        self._i2c.writeto(self._address, buffer)
+        
+    def _write_measurement_mode(self):
+        buffer = bytearray(1)
+                
+        buffer[0] = self._measurement_mode << 4 | self._resolution
+        self._i2c.writeto(self._address, buffer)
+        sleep_ms(24 if self._measurement_time == BH1750.RESOLUTION_LOW else 180)
+        
+    def reset(self):
+        """Clear the illuminance data register."""
+        self._i2c.writeto(self._address, bytearray(b'\x07'))
+    
+    def power_on(self):
+        """Powers on the BH1750."""
+        self._i2c.writeto(self._address, bytearray(b'\x01'))
+
+    def power_off(self):
+        """Powers off the BH1750."""
+        self._i2c.writeto(self._address, bytearray(b'\x00'))
+
+    @property
+    def measurement(self) -> float:
+        """Returns the latest measurement."""
+        if self._measurement_mode == BH1750.MEASUREMENT_MODE_ONE_TIME:
+            self._write_measurement_mode()
+            
+        buffer = bytearray(2)
+        self._i2c.readfrom_into(self._address, buffer)
+        lux = (buffer[0] << 8 | buffer[1]) / (1.2 * (BH1750.MEASUREMENT_TIME_DEFAULT / self._measurement_time))
+        
+        if self._resolution == BH1750.RESOLUTION_HIGH_2:
+            return lux / 2
+        else:
+            return lux
+    
+    def measurements(self) -> float:
+        """This is a generator function that continues to provide the latest measurement. Because the measurement time
+        is greatly affected by resolution and the configured measurement time, this function attemts to calculate the
+        appropriate sleep time between measurements.
+
+        Example usage:
+
+        for measurement in bh1750.measurements():  # bh1750 is an instance of this class
+            print(measurement)
+        """
+        while True:
+            yield self.measurement
+            
+            if self._measurement_mode == BH1750.MEASUREMENT_MODE_CONTINUOUSLY:
+                base_measurement_time = 16 if self._measurement_time == BH1750.RESOLUTION_LOW else 120
+                sleep_ms(math.ceil(base_measurement_time * self._measurement_time / BH1750.MEASUREMENT_TIME_DEFAULT))
+                
+

device_info.py

@@ -3,10 +3,38 @@ import network
 
 class DeviceInfo:
     
+    # Device Infos
     name = "Dev Device 1"
     
     token = "PC]-0Bmp83h7F5#U!D6KJ(A&"
     
+    server_url = 'api.growsystem.muelleronline.org'
+    
+    wlan_ssid = 'Oppa-95.lan'
+    wlan_pw = '95%04-MM'
+
+    sensors = [
+        {
+            'type': 'moisture',
+            'pin_int': 26
+        },
+        {
+            'type': 'ambilight',
+            'pin_int': 8, # for compatibility only
+            'pin_int_sda': 8,
+            'pin_int_scl': 9
+        },
+        
+        
+       # {
+       #     'type': 'dht22',
+       #     'pin_int': 15
+       #     }
+        ]
+    
+    read_secs = 5
+    # Device Infos End
+    
     wlan = network.WLAN(network.STA_IF)
     
     def get_macaddress(self):

dht22.py

@@ -1,32 +1,33 @@
+from sensors import Sensors
 from dht import DHT22
 from machine import ADC, Pin
 
 
-class TemperatureHumiditySensor:
-    dht22_sensor_pin_int = -1
+class TemperatureHumiditySensor(Sensors):
 
-    dht22_sensor = None
+    sensor = None
 
     most_recent_values = []
 
     def __init__(self, settings):
-        print("Hello from dht22 sensor  class")
+        super().__init__(settings)
+        print("Initialize dht22 sensor. Sensor pin is: " + str(settings['pin_int']))
         print(settings)
-        self.dht22_sensor_pin_int = settings['pin_int']
-        self.dht22_sensor = DHT22(Pin(self.dht22_sensor_pin_int, Pin.IN, Pin.PULL_UP))
+        self.sensor_pin_int = settings['pin_int']
+        self.sensor = DHT22(Pin(self.sensor_pin_int, Pin.IN, Pin.PULL_UP))
 
     def read(self):
         try:
-            self.dht22_sensor.measure()
+            self.sensor.measure()
             self.most_recent_values = [
                 {
                     'type': 'temperature',
-                    'value': self.dht22_sensor.temperature(),
+                    'value': self.sensor.temperature(),
                     'unit': 'C'
                 },
                 {
                     'type': 'humidity',
-                    'value': self.dht22_sensor.humidity(),
+                    'value': self.sensor.humidity(),
                     'unit': '%'
                 }
             ]

grow_system.py

@@ -1,29 +1,52 @@
 import time
 from moisture_sensor import MoistureSensor
 from dht22 import TemperatureHumiditySensor
+from ambilight_sensor import AmbilightSensor
 from sensor_data_manager import SensorDataManager
 from grow_system_api import GrowSystemApi
+from device_info import DeviceInfo
 
 
 class GrowSystem:
 
     grow_system_api = GrowSystemApi()
     
-    moisture_sensor = None
-    temperature_humidity_sensor = None
+    # moisture_sensor = None
+    # temperature_humidity_sensor = None
+
+    sensors = []
 
     most_recent_values = []
     
     sensor_data_manager = None
     
     device_id = None
+    
+    device_info = DeviceInfo()
 
     def __init__(self, settings):       
-        if not self.moisture_sensor:
-            self.moisture_sensor = MoistureSensor(settings['moisture_sensor'])
+        for sensor in self.device_info.sensors:
+            print("")
+            print("Initialize sensor:")
+            print(sensor)
+            sensor_type = sensor['type']
+            if sensor_type == 'moisture':
+                print("Found sensor of type moisture")
+                self.sensors.append(MoistureSensor(sensor))
+            elif sensor_type == 'dht22':
+                print("Found sensor of type DHT22")
+                self.sensors.append(TemperatureHumiditySensor(sensor))
+            elif sensor_type == 'ambilight':
+                print("Found sensor of type GY302/BH1750")
+                self.sensors.append(AmbilightSensor(sensor))
+            else:
+                print("No sensor type configured for: " + sensor['type'])
+            
+        #if not self.moisture_sensor:
+        #    self.moisture_sensor = MoistureSensor(settings['moisture_sensor'])
 
-        if not self.temperature_humidity_sensor:
-            self.temperature_humidity_sensor = TemperatureHumiditySensor(settings['temperature_humidity_sensor'])
+        #if not self.temperature_humidity_sensor:
+        #    self.temperature_humidity_sensor = TemperatureHumiditySensor(settings['temperature_humidity_sensor'])
 
     def start(self):
         print("Say the server hello...")
@@ -41,18 +64,15 @@ class GrowSystem:
         while True:
             # Reset data
             self.most_recent_values = []
-            # Moisture Sensor
-            self.moisture_sensor.read()
-            self.most_recent_values = self.most_recent_values + self.moisture_sensor.most_recent_value
+            
+            for sensor in self.sensors:
+                print("Read sensor of type " + sensor.type + " at pin " + str(sensor.sensor_pin_int))
+                sensor.read()
+                for measurement in sensor.most_recent_values:
+                    print(f"Got {measurement['value']} {measurement['unit']} ({measurement['type']})")
+                self.most_recent_values = self.most_recent_values + sensor.most_recent_values
 
-            # Temperature and Humidity Sensor
-            self.temperature_humidity_sensor.read()
-            self.most_recent_values = self.most_recent_values + self.temperature_humidity_sensor.most_recent_values
-            
-            print("Most recent bla")
-            print(self.most_recent_values)
-            
             self.sensor_data_manager.handleData(self.most_recent_values)
             
-            time.sleep(5)
+            time.sleep(self.device_info.read_secs)
 

grow_system_api.py

@@ -9,18 +9,20 @@ class GrowSystemApi:
     
     device_info = DeviceInfo()
     
-    base_url = 'api.growsystem.muellerdev.kozow.com'
+    base_url = ''
+    
+    def __init__(self):
+        self.base_url = self.device_info.server_url
          
     def say_hello(self):
-        data = self._get_device_data()
-        response = self.http_client.post(self.base_url + "/api/device", data)
-        jsonResult =  json.loads(response.text)
+        response = self.http_client.post(self.base_url + "/api/device", self._get_device_data())
+        print(response.text)
+        jsonResult = json.loads(response.text)
         print(jsonResult)
         return jsonResult;
     
     def send_measurements(self, device_id, data):
         url = self.base_url + "/api/device/" + str(device_id) + "/sensor-log"
-        print(url)
         response = self.http_client.post(url, data)
         return json.loads(response.text)
             

lib/bh1750.py

@@ -0,0 +1,62 @@
+"""
+Micropython BH1750 ambient light sensor driver.
+* https://github.com/PinkInk/upylib/tree/master/bh1750
+"""
+
+from utime import sleep_ms
+
+
+class BH1750():
+    """Micropython BH1750 ambient light sensor driver."""
+
+    PWR_OFF = 0x00
+    PWR_ON = 0x01
+    RESET = 0x07
+
+    # modes
+    CONT_LOWRES = 0x13
+    CONT_HIRES_1 = 0x10
+    CONT_HIRES_2 = 0x11
+    ONCE_HIRES_1 = 0x20
+    ONCE_HIRES_2 = 0x21
+    ONCE_LOWRES = 0x23
+
+    # default addr=0x23 if addr pin floating or pulled to ground
+    # addr=0x5c if addr pin pulled high
+    def __init__(self, bus, addr=0x23):
+        self.bus = bus
+        self.addr = addr
+        self.off()
+        self.reset()
+
+    def off(self):
+        """Turn sensor off."""
+        self.set_mode(self.PWR_OFF)
+
+    def on(self):
+        """Turn sensor on."""
+        self.set_mode(self.PWR_ON)
+
+    def reset(self):
+        """Reset sensor, turn on first if required."""
+        self.on()
+        self.set_mode(self.RESET)
+
+    def set_mode(self, mode):
+        """Set sensor mode."""
+        self.mode = mode
+        self.bus.writeto(self.addr, bytes([self.mode]))
+
+    def luminance(self, mode):
+        """Sample luminance (in lux), using specified sensor mode."""
+        # continuous modes
+        if mode & 0x10 and mode != self.mode:
+            self.set_mode(mode)
+        # one shot modes
+        if mode & 0x20:
+            self.set_mode(mode)
+        # earlier measurements return previous reading
+        sleep_ms(24 if mode in (0x13, 0x23) else 180)
+        data = self.bus.readfrom(self.addr, 2)
+        factor = 2.0 if mode in (0x11, 0x21) else 1.0
+        return (data[0]<<8 | data[1]) / (1.2 * factor)

main.py

@@ -44,13 +44,11 @@ if __name__ == '__main__':
     print("Connect WLAN")
     wlanClient = WlanClient(settings['wlan_ssid'], settings['wlan_pw'])
     wlanClient.connect()
-    print("---------------------------------------")
     print("")
     
     di = DeviceInfo()
     print("Device Infos:")
     print(di.get_all_device_infos())
-    print("---------------------------------------")
     print("")
     
     print("Start grow system")

moisture_sensor.py

@@ -1,24 +1,39 @@
 # Moisture Sensor Class
+from sensors import Sensors
 from machine import ADC, Pin
 
 
-class MoistureSensor:
-    moisture_sensor_pin_int = -1
+class MoistureSensor(Sensors):
+    
+    sensor = None
 
-    moisture_sensor = None
+    most_recent_values = []
+    
+    min_raw_value = None
+    max_raw_value = None
 
-    most_recent_value = []
-
-    def __init__(self, moisture_sensor_data):
-        self.moisture_sensor_pin_int = moisture_sensor_data['pin_int']
-        print("Hello from moisture sensor. Sensor pin is: " + str(self.moisture_sensor_pin_int))
-        self.moisture_sensor = ADC(Pin(self.moisture_sensor_pin_int))
+    def __init__(self, sensor_data, min_raw_value=300, max_raw_value=65535):
+        super().__init__(sensor_data)
+        print("Initialize moisture sensor. Sensor pin is: " + str(sensor_data['pin_int']))
+        self.sensor_pin_int = sensor_data['pin_int']
+        self.min_raw_value = min_raw_value
+        self.max_raw_value = max_raw_value
+        self.sensor = ADC(Pin(self.sensor_pin_int))
 
     def read(self):
-        self.most_recent_value = [
-                            {
-                    'type': 'moisture',
-                    'value': self.moisture_sensor.read_u16(),
-                    'unit': 'unknown'
-                },
-            ]
+        self.most_recent_values = [
+            {
+                'type': 'moisture',
+                'value': self.convert_to_moisture_percentage(self.sensor.read_u16()),
+                'unit': '%'
+            },
+        ]
+
+    def normalize_sensor_value(self, raw_value):
+        return (raw_value - self.min_raw_value) / (self.max_raw_value - self.min_raw_value)
+
+    def convert_to_moisture_percentage(self, raw_value):
+        normalized_value = self.normalize_sensor_value(raw_value)
+        return round(100 - normalized_value * 100, 1)
+    
+    

sensor_data_manager.py

@@ -1,19 +1,20 @@
 from grow_system_api import GrowSystemApi
+# from device_info import DeviceInfo
 
 
 class SensorDataManager:
     
-    grow_system_api = None
+    device_info = None
     
-    base_url = 'api.growsystem.muellerdev.kozow.com'
+    grow_system_api = None
     
     device_id = None
     
     def __init__(self, device_id):
         self.grow_system_api = GrowSystemApi()
+        # self.device_info = DeviceInfo()
         self.device_id = device_id
             
     def handleData(self, data):
         jsonResponse = self.grow_system_api.send_measurements(self.device_id, data)
-        print("---- Response: -----")
-        print(jsonResponse)
+        print("Response message: " + jsonResponse['message'])

sensors.py

@@ -0,0 +1,13 @@
+class Sensors:
+    # this is a parent class for the Sensor classes
+    sensor_pin_int = -1
+    
+    sensor = None
+    
+    type = "unset"
+    
+    def __init__(self, settings):
+        self.type = settings['type']
+        print("Initialize " + self.type + " sensor. Sensor pin is: " + str(settings['pin_int']))
+    
+