75 lines
2.5 KiB
Python
75 lines
2.5 KiB
Python
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# This example shows you a simple, non-interrupt way of reading Pico Explorer's buttons with a loop that checks to see if buttons are pressed.
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import time
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from pimoroni import Button
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from picographics import PicoGraphics, DISPLAY_PICO_EXPLORER, PEN_P4
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import picoexplorer
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# We're only using a few colours so we can use a 4 bit/16 colour palette and save RAM!
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display = PicoGraphics(display=DISPLAY_PICO_EXPLORER, pen_type=PEN_P4)
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button_a = Button(picoexplorer.BUTTON_A)
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button_b = Button(picoexplorer.BUTTON_B)
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button_x = Button(picoexplorer.BUTTON_X)
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button_y = Button(picoexplorer.BUTTON_Y)
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# alternatively, you could set up the buttons using pin number if you prefer
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# button_a = Button(12)
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# button_b = Button(13)
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# button_x = Button(14)
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# button_y = Button(15)
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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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CYAN = display.create_pen(0, 255, 255)
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MAGENTA = display.create_pen(255, 0, 255)
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YELLOW = display.create_pen(255, 255, 0)
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GREEN = display.create_pen(0, 255, 0)
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# sets up a handy function we can call to clear the screen
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def clear():
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display.set_pen(BLACK)
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display.clear()
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display.update()
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# set up
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clear()
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display.set_font("bitmap8")
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while True:
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if button_a.read(): # if a button press is detected then...
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clear() # clear to black
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display.set_pen(WHITE) # change the pen colour
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display.text("Button A pressed", 10, 10, 240, 4) # display some text on the screen
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display.update() # update the display
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time.sleep(1) # pause for a sec
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clear() # clear to black again
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elif button_b.read():
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clear()
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display.set_pen(CYAN)
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display.text("Button B pressed", 10, 10, 240, 4)
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display.update()
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time.sleep(1)
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clear()
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elif button_x.read():
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clear()
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display.set_pen(MAGENTA)
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display.text("Button X pressed", 10, 10, 240, 4)
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display.update()
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time.sleep(1)
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clear()
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elif button_y.read():
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clear()
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display.set_pen(YELLOW)
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display.text("Button Y pressed", 10, 10, 240, 4)
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display.update()
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time.sleep(1)
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clear()
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else:
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display.set_pen(GREEN)
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display.text("Press any button!", 10, 10, 240, 4)
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display.update()
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time.sleep(0.1) # this number is how frequently the Pico checks for button presses
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