7f964a840e
* Changed the name of the .py file to adafruit_dht; update api.rst and example file to reference new name. * re-raise the exception after the import of adafruit_dhtlib * Remove lib from comment.
43 lines
No EOL
1.1 KiB
Python
43 lines
No EOL
1.1 KiB
Python
"""
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example of reading temperature and humidity from a DHT device
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and displaying results to the serial port and a 8 digit 7-segment display
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the DHT device data wire is connected to board.D2
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"""
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# import for dht devices
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import time
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import adafruit_dht
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from board import D2
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#imports for 7-segment display device
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from adafruit_max7219 import bcddigits
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from board import TX, RX, A2
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import busio
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import digitalio
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clk = RX
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din = TX
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cs = digitalio.DigitalInOut(A2)
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spi = busio.SPI(clk, MOSI=din)
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display = bcddigits.BCDDigits(spi, cs, nDigits=8)
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display.brightness(5)
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#initial the dht device
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dhtDevice = adafruit_dht.DHT22(D2)
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while True:
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try:
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# show the values to the serial port
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temperature = dhtDevice.temperature*9/5+32
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humidity = dhtDevice.humidity
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#print("Temp: {:.1f} F Humidity: {}% ".format(temperature, humidity))
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# now show the values on the 8 digit 7-segment display
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display.clear_all()
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display.show_str(0,'{:5.1f}{:5.1f}'.format(temperature, humidity))
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display.show()
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except RuntimeError as error:
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print(error.args)
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time.sleep(2.0)
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