57 lines
1.3 KiB
Python
57 lines
1.3 KiB
Python
"""Simple test for 16x2 character lcd connected to an MCP23008 I2C LCD backpack."""
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import time
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import board
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import busio
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import adafruit_character_lcd.character_lcd_i2c as character_lcd
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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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# Initialise I2C bus.
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i2c = busio.I2C(board.SCL, board.SDA)
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# Initialise the lcd class
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lcd = character_lcd.Character_LCD_I2C(i2c, lcd_columns, lcd_rows)
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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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time.sleep(5)
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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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