64 lines
1.6 KiB
Python
64 lines
1.6 KiB
Python
"""Simple test for monochromatic character LCD on Raspberry Pi"""
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import time
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import board
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import digitalio
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import adafruit_character_lcd.character_lcd as characterlcd
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# Modify this if you have a different sized character LCD
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lcd_columns = 16
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lcd_rows = 2
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# Raspberry Pi Pin Config:
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lcd_rs = digitalio.DigitalInOut(board.D26)
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lcd_en = digitalio.DigitalInOut(board.D19)
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lcd_d7 = digitalio.DigitalInOut(board.D27)
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lcd_d6 = digitalio.DigitalInOut(board.D22)
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lcd_d5 = digitalio.DigitalInOut(board.D24)
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lcd_d4 = digitalio.DigitalInOut(board.D25)
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lcd_backlight = digitalio.DigitalInOut(board.D4)
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# Initialise the lcd class
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lcd = characterlcd.Character_LCD_Mono(
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lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6, lcd_d7, lcd_columns, lcd_rows, lcd_backlight
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)
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# Turn backlight on
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lcd.backlight = True
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# Print a two line message
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lcd.message = "Hello\nCircuitPython"
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# Wait 5s
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time.sleep(5)
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lcd.clear()
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# Print two line message right to left
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lcd.text_direction = lcd.RIGHT_TO_LEFT
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lcd.message = "Hello\nCircuitPython"
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# Wait 5s
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time.sleep(5)
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# Return text direction to left to right
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lcd.text_direction = lcd.LEFT_TO_RIGHT
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# Display cursor
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lcd.clear()
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lcd.cursor = True
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lcd.message = "Cursor! "
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# Wait 5s
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time.sleep(5)
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# Display blinking cursor
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lcd.clear()
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lcd.blink = True
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lcd.message = "Blinky Cursor!"
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# Wait 5s
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time.sleep(5)
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lcd.blink = False
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lcd.clear()
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# Create message to scroll
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scroll_msg = "<-- Scroll"
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lcd.message = scroll_msg
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# Scroll message to the left
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for i in range(len(scroll_msg)):
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time.sleep(0.5)
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lcd.move_left()
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lcd.clear()
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lcd.message = "Going to sleep\nCya later!"
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# Turn backlight off
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lcd.backlight = False
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time.sleep(2)
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