Added webhook plant moisture sensor code

Author: evaherrada

Webhook_Plant_Sensor/code.py

@@ -0,0 +1,108 @@
+# SPDX-FileCopyrightText: 2021 Dylan Herrada for Adafruit Industries
+# SPDX-License-Identifier: MIT
+
+import time
+
+import board
+from digitalio import DigitalInOut
+from adafruit_esp32spi import adafruit_esp32spi
+from adafruit_esp32spi import adafruit_esp32spi_wifimanager
+import adafruit_esp32spi.adafruit_esp32spi_socket as socket
+import neopixel
+import adafruit_minimqtt.adafruit_minimqtt as MQTT
+from adafruit_io.adafruit_io import IO_MQTT
+from adafruit_seesaw.seesaw import Seesaw
+import busio
+
+# Set up moisture sensor with seesaw
+i2c_bus = board.I2C()
+seesaw = Seesaw(i2c_bus, addr=0x36)
+
+# Get wifi details and more from a secrets.py file
+try:
+    from secrets import secrets
+except ImportError:
+    print("WiFi secrets are kept in secrets.py, please add them there!")
+    raise
+
+# Set up WiFi
+esp32_cs = DigitalInOut(board.D13)
+esp32_ready = DigitalInOut(board.D11)
+esp32_reset = DigitalInOut(board.D12)
+
+spi = busio.SPI(board.SCK, board.MOSI, board.MISO)
+esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset)
+status_light = neopixel.NeoPixel(board.NEOPIXEL, 1, brightness=0.2)
+wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, status_light)
+
+# Define callback functions which will be called when certain events happen.
+# pylint: disable=unused-argument
+def connected(client):
+    # This method is called when the client connects to Adafruit IO
+    client.subscribe("plant")
+
+
+def subscribe(client, userdata, topic, granted_qos):
+    # This method is called when the client subscribes to a new feed.
+    print("Subscribed to {0} with QOS level {1}".format(topic, granted_qos))
+
+
+def message(client, feed_id, payload):
+    # This method is called when a feed receives a new message
+    print("Feed {0} received new value: {1}".format(feed_id, payload))
+
+
+# Connect to WiFi
+print("Connecting to WiFi...")
+wifi.connect()
+print("Connected!")
+
+# Initialize MQTT interface with the esp interface
+MQTT.set_socket(socket, esp)
+
+# Initialize a new MQTT Client object
+mqtt_client = MQTT.MQTT(
+    broker="io.adafruit.com",
+    username=secrets["aio_username"],
+    password=secrets["aio_key"],
+)
+
+
+# Initialize an Adafruit IO MQTT Client
+io = IO_MQTT(mqtt_client)
+
+# Connect the callback methods defined above to Adafruit IO
+io.on_connect = connected
+io.on_subscribe = subscribe
+io.on_message = message
+
+# Connect to Adafruit IO
+print("Connecting to Adafruit IO...")
+io.connect()
+
+START = 0
+LOW = False
+
+MIN = 500
+
+while True:
+    # read moisture level through capacitive touch pad
+    touch = seesaw.moisture_read()
+
+    # read temperature from the temperature sensor
+    temp = seesaw.get_temp()
+
+    if touch < MIN:
+        if not LOW:
+            io.publish("plant", touch)
+            print("published")
+        LOW = True
+
+    elif touch >= MIN and time.time() - START > 10:
+        io.publish("plant", touch)
+        print("published to Adafruit IO")
+        START = time.time()
+        LOW = False
+
+    print("temp: " + str(temp) + "  moisture: " + str(touch))
+    time.sleep(1)