kopia lustrzana https://github.com/pimoroni/pimoroni-pico
63 wiersze
2.2 KiB
Python
63 wiersze
2.2 KiB
Python
"""BME688 / BME680 demo
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This demo will work for both the BME680 and BME688.
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"""
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import time
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from picographics import PicoGraphics, DISPLAY_ENVIRO_PLUS
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from pimoroni import RGBLED
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from breakout_bme68x import BreakoutBME68X, STATUS_HEATER_STABLE
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from pimoroni_i2c import PimoroniI2C
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PINS_BREAKOUT_GARDEN = {"sda": 4, "scl": 5}
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PINS_PICO_EXPLORER = {"sda": 20, "scl": 21}
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i2c = PimoroniI2C(**PINS_BREAKOUT_GARDEN)
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bmp = BreakoutBME68X(i2c, address=0x77)
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display = PicoGraphics(display=DISPLAY_ENVIRO_PLUS)
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display.set_backlight(1.0)
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led = RGBLED(6, 7, 10, invert=True) # setting pins for the RGB led
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led.set_rgb(0, 0, 0)
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# setup background
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BG = display.create_pen(0, 0, 0)
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TEXT = display.create_pen(255, 255, 255)
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TEMP = display.create_pen(255, 0, 0)
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PRESS = display.create_pen(255, 255, 0)
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HUMID = display.create_pen(0, 255, 0)
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display.set_pen(BG)
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display.clear()
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def draw_graph(temp_value, press_value, humid_value):
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scaled_temp = int(temp_value + 40) # Range from -40 to +60 = 1-100
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scaled_press = int((press_value - 87000) / ((108400 - 87000) / 100)) # Range 108400 - 87000 = 1 -100
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scaled_humid = int(humid_value) # Range 1 - 100
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display.set_pen(BG)
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display.clear()
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display.set_pen(TEMP)
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display.rectangle(0, 60, scaled_temp, 60)
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display.text("TEMP: {:0.2f}c".format(temp_value), scaled_temp + 5, 80, scale=2)
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display.set_pen(PRESS)
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display.text("PRESS: {:0.2f}Pa".format(press_value), scaled_press + 5, 140, scale=2)
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display.rectangle(0, 120, scaled_press, 60)
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display.set_pen(HUMID)
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display.text("HUMID: {:0.2f}%".format(humid_value), scaled_humid + 5, 200, scale=2)
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display.rectangle(0, 180, scaled_humid, 60)
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display.set_pen(TEXT)
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display.text("BME688 enviro Sensor", 5, 10, scale=2)
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display.update()
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while True:
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temperature, pressure, humidity, gas, status, _, _ = bmp.read()
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draw_graph(temperature, pressure, humidity)
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heater = "Stable" if status & STATUS_HEATER_STABLE else "Unstable"
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print("{:0.2f}c, {:0.2f}Pa, {:0.2f}%, {:0.2f} Ohms, Heater: {}".format(
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temperature, pressure, humidity, gas, heater))
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time.sleep(1.0)
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