Add tsl2561 light sensor (#393)

* Add tsl2561 light sensor

README.md

@@ -38,16 +38,17 @@ Hardware support is provided by specific GPIO, Sensor and Stream modules. It's e
   - DHT11/DHT22/AM2302 temperature and humidity sensors (`dht22`)
   - DS18S20/DS1822/DS18B20/DS1825/DS28EA00/MAX31850K temperature sensors (`ds18b`)
   - ENS160  digital multi-gas sensor with multiple IAQ data (TVOC, eCO2, AQI) (`ens160`)
+  - FREQUENCYCOUNTER Counts pulses from GPIOs and return the frequency in Hz (`frequencycounterr`)
+  - FLOWSENSOR generic flow rate sensor like YF-S201, YF-DN50 or others (`flowsensor`)
   - HCSR04 ultrasonic range sensor (connected to the Raspberry Pi on-board GPIO) (`hcsr04`)
   - INA219 DC current sensor (`ina219`)
   - LM75 temperature sensor (`lm75`)
   - MCP3008 analog to digital converter (`mcp3008`)
   - ADXl345 3-axis accelerometer up to ±16g  (`adxl345`)
   - PMS5003 particulate sensor (`pms5003`)
   - SHT40/SHT41/SHT45 temperature and humidity sensors (`sht4x`)
+  - TLSl2561 light level sensor (`tsl2561`)
   - YF-S201 flow rate sensor (`yfs201`)
-  - FREQUENCYCOUNTER Counts pulses from GPIOs and return the frequency in Hz (frequencycounter)
-  - FLOWSENSOR generic flow rate sensor like YF-S201 or YF-DN50 (`flowsensor`)
 
 
 ### Streams

mqtt_io/modules/sensor/tsl2561.py

@@ -0,0 +1,107 @@
+"""
+TSL2561 luminosity sensor
+"""
+from typing import cast
+
+from ...types import CerberusSchemaType, ConfigType, SensorValueType
+from . import GenericSensor
+
+REQUIREMENTS = ("adafruit-circuitpython-tsl2561",)
+CONFIG_SCHEMA: CerberusSchemaType = {
+    "chip_addr": {
+        "type": 'integer',
+        "required": False,
+        "empty": False,
+        "default": '0x48'},
+    "integration_time": {
+        "required": False,
+        "empty": False,
+        "allowed": [13.7, 101, 402],
+        "default": 101,
+    },
+    "gain": {
+        "required": False,
+        "empty": False,
+        "allowed": [1, 16],
+        "default": 1,
+    },
+}
+
+
+class Sensor(GenericSensor):
+    """
+    Implementation of Sensor class for the Adafruit_ADS1x15.
+    """
+
+    SENSOR_SCHEMA: CerberusSchemaType = {
+        "type": {
+            "type": 'string',
+            "required": False,
+            "empty": False,
+            "allowed": ['broadband', 'infrared', 'lux'],
+            "default": 'lux',
+        },
+    }
+
+    def setup_module(self) -> None:
+        # pylint: disable=import-outside-toplevel,attribute-defined-outside-init
+        # pylint: disable=import-error,no-member
+        import board  # type: ignore
+        import busio  # type: ignore
+        import adafruit_tsl2561 # type: ignore
+        # Create the I2C bus
+        self.i2c = busio.I2C(board.SCL, board.SDA)
+
+        # Convert sensor address from hex to dec
+        self.address = int(0x48)
+        if 'chip_addr' in self.config:
+            self.address = int(self.config['chip_addr'])
+
+        self.tsl = adafruit_tsl2561.TSL2561(self.i2c, self.address)
+
+        # Set gain 0=1x, 1=16x
+        gains = {
+            "1": 0,
+            "16": 1,
+        }
+        if 'gain' in self.config:
+            self.tsl.gain = gains[str(self.config["gain"])]
+
+        # Set integration time (0=13.7ms, 1=101ms, 2=402ms, or 3=manual)
+        ints = {
+            "13.7": 0,
+            "101": 1,
+            "402": 2,
+        }
+        if 'integration_time' in self.config:
+            self.tsl.integration_time = ints[str(self.config["integration_time"])]
+
+        self.tsl.enabled = True
+
+        #print("tsl2561 Enabled = {}".format(self.tsl.enabled))
+        #print("tsl2561 Gain = {}".format(self.tsl.gain))
+        #print("tsl2561 Integration time = {}".format(self.tsl.integration_time))
+
+    def get_value(self, sens_conf: ConfigType) -> SensorValueType:
+        # pylint: disable=import-outside-toplevel,attribute-defined-outside-init
+        # pylint: disable=import-error,no-member
+        import time
+        self.tsl.enabled = True
+        time.sleep(1)
+
+        sens_type = sens_conf["type"]
+        data = {
+            "broadband": self.tsl.broadband,
+            "infrared": self.tsl.infrared,
+            "lux": self.tsl.lux
+        }
+
+        self.tsl.enabled = False
+
+        if data[sens_type] is None: # Possible sensor underrange or overrange.
+            data[sens_type] = -1
+
+        return cast(
+            float,
+            data[sens_type],
+        )