kopia lustrzana https://github.com/pimoroni/pimoroni-pico
145 wiersze
4.6 KiB
Python
145 wiersze
4.6 KiB
Python
# This example lets you plug a BME280 breakout into your Pico Explorer and make a little indoor weather station, with barometer style descriptions.
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import time
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from breakout_bme280 import BreakoutBME280
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from pimoroni_i2c import PimoroniI2C
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from pimoroni import PICO_EXPLORER_I2C_PINS
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from picographics import PicoGraphics, DISPLAY_PICO_EXPLORER
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# set up the hardware
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display = PicoGraphics(display=DISPLAY_PICO_EXPLORER)
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i2c = PimoroniI2C(**PICO_EXPLORER_I2C_PINS)
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bme = BreakoutBME280(i2c, address=0x76)
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# lets set up some pen colours to make drawing easier
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TEMPCOLOUR = display.create_pen(0, 0, 0) # this colour will get changed in a bit
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WHITE = display.create_pen(255, 255, 255)
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BLACK = display.create_pen(0, 0, 0)
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RED = display.create_pen(255, 0, 0)
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GREY = display.create_pen(125, 125, 125)
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# converts the temperature into a barometer-type description and pen colour
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def describe_temperature(temperature):
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global TEMPCOLOUR
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if temperature < 10:
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description = "very cold"
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TEMPCOLOUR = display.create_pen(0, 255, 255)
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elif 10 <= temperature < 20:
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description = "cold"
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TEMPCOLOUR = display.create_pen(0, 0, 255)
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elif 20 <= temperature < 25:
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description = "temperate"
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TEMPCOLOUR = display.create_pen(0, 255, 0)
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elif 25 <= temperature < 30:
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description = "warm"
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TEMPCOLOUR = display.create_pen(255, 255, 0)
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elif temperature >= 30:
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description = "very warm"
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TEMPCOLOUR = display.create_pen(255, 0, 0)
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else:
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description = ""
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TEMPCOLOUR = display.create_pen(0, 0, 0)
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return description
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# comment out the function above and uncomment this one for yorkshire mode
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"""
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def describe_temperature(temperature):
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global TEMPCOLOUR
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if temperature < 10:
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description = "frozzed"
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TEMPCOLOUR = display.create_pen(0, 255, 255)
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elif 10 <= temperature < 20:
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description = "nithering"
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TEMPCOLOUR = display.create_pen(0, 0, 255)
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elif 20 <= temperature < 25:
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description = "fair t' middlin"
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TEMPCOLOUR = display.create_pen(0, 255, 0)
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elif 25 <= temperature < 30:
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description = "chuffing warm"
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TEMPCOLOUR = display.create_pen(255, 255, 0)
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elif temperature >= 30:
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description = "crackin t' flags"
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TEMPCOLOUR = display.create_pen(255, 0, 0)
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else:
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description = ""
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TEMPCOLOUR = display.create_pen(0, 0, 0)
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return description
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"""
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# converts pressure into barometer-type description
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def describe_pressure(pressure):
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if pressure < 970:
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description = "storm"
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elif 970 <= pressure < 990:
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description = "rain"
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elif 990 <= pressure < 1010:
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description = "change"
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elif 1010 <= pressure < 1030:
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description = "fair"
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elif pressure >= 1030:
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description = "dry"
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else:
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description = ""
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return description
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# converts humidity into good/bad description
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def describe_humidity(humidity):
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if 40 < humidity < 60:
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description = "good"
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else:
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description = "bad"
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return description
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while True:
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display.set_pen(BLACK)
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display.clear()
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# read the sensors
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temperature, pressure, humidity = bme.read()
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# pressure comes in pascals which is a reight long number, lets convert it to the more manageable hPa
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pressurehpa = pressure / 100
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# draw a thermometer/barometer thingy
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display.set_pen(GREY)
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display.circle(190, 190, 40)
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display.rectangle(180, 45, 20, 140)
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# switch to red to draw the 'mercury'
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display.set_pen(RED)
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display.circle(190, 190, 30)
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thermometerheight = int(120 / 30 * temperature)
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if thermometerheight > 120:
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thermometerheight = 120
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if thermometerheight < 1:
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thermometerheight = 1
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display.rectangle(186, 50 + 120 - thermometerheight, 10, thermometerheight)
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# drawing the temperature text
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display.set_pen(WHITE)
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display.text("temperature:", 10, 10, 240, 3)
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display.set_pen(TEMPCOLOUR)
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display.text('{:.1f}'.format(temperature) + 'C', 10, 30, 240, 5)
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display.set_pen(WHITE)
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display.text(describe_temperature(temperature), 10, 60, 240, 3)
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# and the pressure text
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display.text("pressure:", 10, 90, 240, 3)
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display.text('{:.0f}'.format(pressurehpa) + 'hPa', 10, 110, 240, 5)
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display.text(describe_pressure(pressurehpa), 10, 140, 240, 3)
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# and the humidity text
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display.text("humidity:", 10, 170, 240, 3)
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display.text('{:.0f}'.format(humidity) + '%', 10, 190, 240, 5)
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display.text(describe_humidity(humidity), 10, 220, 240, 3)
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# time to update the display
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display.update()
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# waits for 1 second and clears to BLACK
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time.sleep(1)
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