Created
March 3, 2021 16:15
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Display a temperature sensor on an I2C OLED REPL with the QT PY Haxpress
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import time | |
import board | |
print("I2C") | |
i2c = board.I2C() | |
while not i2c.try_lock(): | |
i2c.unlock() | |
#i2c.unlock() | |
try: | |
scan = i2c.scan() | |
print((scan,[hex(x) for x in scan])) | |
finally: | |
i2c.unlock() | |
print("HTS221") | |
from adafruit_hts221 import HTS221 | |
sensor = HTS221(i2c) | |
# import neopixel | |
# pix = neopixel.NeoPixel(board.NEOPIXEL,1) | |
print("DISPLAY") | |
import displayio | |
from adafruit_displayio_ssd1306 import SSD1306 | |
displayio.release_displays() | |
# connect to display | |
print("Connect to display") | |
display_bus = displayio.I2CDisplay(i2c, device_address=0x3c) | |
oled = SSD1306(display_bus, width=128, height=32, rotation=180) | |
# display_bus = displayio.I2CDisplay(i2c, device_address=0x3d) | |
# oled = SSD1306(display_bus, width=128, height=64, rotation=0) | |
# display context | |
from adafruit_display_text.bitmap_label import Label | |
import gc | |
try: | |
while True: | |
# relative_humidity | |
temperature = sensor.temperature | |
texte = "\n\nFree Mem: %02d\nTemperature %.1fC" % (gc.mem_free(),temperature) | |
print(texte,end="") | |
time.sleep(1) | |
gc.collect() | |
finally: | |
displayio.release_displays() | |
i2c.deinit() |
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