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Merge pull request #11 from brentru/add-example-analog
Add example: AnalogIn
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""" | ||
Example of reading an analog light sensor | ||
and sending the value to Adafruit IO | ||
""" | ||
import time | ||
import board | ||
import busio | ||
from digitalio import DigitalInOut | ||
from adafruit_esp32spi import adafruit_esp32spi, adafruit_esp32spi_wifimanager | ||
from analogio import AnalogIn | ||
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# Import Adafruit IO REST Client | ||
from adafruit_io.adafruit_io import RESTClient, AdafruitIO_RequestError | ||
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# Delay between polling and sending light sensor data, in seconds | ||
SENSOR_DELAY = 30 | ||
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# 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 | ||
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# PyPortal ESP32 Setup | ||
esp32_cs = DigitalInOut(board.ESP_CS) | ||
esp32_ready = DigitalInOut(board.ESP_BUSY) | ||
esp32_reset = DigitalInOut(board.ESP_RESET) | ||
spi = busio.SPI(board.SCK, board.MOSI, board.MISO) | ||
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset) | ||
wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, board.NEOPIXEL) | ||
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""" | ||
# ESP32 Setup | ||
esp32_cs = DigitalInOut(board.D9) | ||
esp32_ready = DigitalInOut(board.D10) | ||
esp32_reset = DigitalInOut(board.D5) | ||
spi = busio.SPI(board.SCK, board.MOSI, board.MISO) | ||
esp = adafruit_esp32spi.ESP_SPIcontrol(spi, esp32_cs, esp32_ready, esp32_reset) | ||
wifi = adafruit_esp32spi_wifimanager.ESPSPI_WiFiManager(esp, secrets, board.NEOPIXEL) | ||
""" | ||
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# Set your Adafruit IO Username and Key in secrets.py | ||
# (visit io.adafruit.com if you need to create an account, | ||
# or if you need your Adafruit IO key.) | ||
ADAFRUIT_IO_USER = secrets['adafruit_io_user'] | ||
ADAFRUIT_IO_KEY = secrets['adafruit_io_key'] | ||
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# Create an instance of the Adafruit IO REST client | ||
io = RESTClient(ADAFRUIT_IO_USER, ADAFRUIT_IO_KEY, wifi) | ||
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try: | ||
# Get the 'light' feed from Adafruit IO | ||
light_feed = io.get_feed('light') | ||
except AdafruitIO_RequestError: | ||
# If no 'light' feed exists, create one | ||
light_feed = io.create_new_feed('light') | ||
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# Set up an analog light sensor on the PyPortal | ||
adc = AnalogIn(board.LIGHT) | ||
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while True: | ||
light_value = adc.value | ||
print('Light Level: ', light_value) | ||
print('Sending to Adafruit IO...') | ||
io.send_data(light_feed['key'], light_value) | ||
print('Sent!') | ||
# delay sending to Adafruit IO | ||
time.sleep(SENSOR_DELAY) |