Adafruit_CircuitPython_CharLCD/examples/charlcd_mono_simpletest.py at 25161293a64870278ad4215730d5aef5e9fe64df · profbrady/Adafruit_CircuitPython_CharLCD · GitHub

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"""Simple test for monochromatic character LCD"""
import time
import board
import digitalio
import adafruit_character_lcd.character_lcd as characterlcd

# Modify this if you have a different sized character LCD
lcd_columns = 16
lcd_rows = 2

# Metro M0/M4 Pin Config:
lcd_rs = digitalio.DigitalInOut(board.D7)
lcd_en = digitalio.DigitalInOut(board.D8)
lcd_d7 = digitalio.DigitalInOut(board.D12)
lcd_d6 = digitalio.DigitalInOut(board.D11)
lcd_d5 = digitalio.DigitalInOut(board.D10)
lcd_d4 = digitalio.DigitalInOut(board.D9)
lcd_backlight = digitalio.DigitalInOut(board.D13)

# Initialise the LCD class
lcd = characterlcd.Character_LCD_Mono(lcd_rs, lcd_en, lcd_d4, lcd_d5, lcd_d6,
                                      lcd_d7, lcd_columns, lcd_rows, lcd_backlight)

# Turn backlight on
lcd.backlight = True
# Print a two line message
lcd.message = "Hello\nCircuitPython"
# Wait 3s
time.sleep(3)
# Print two line message with cursor set to column 2
lcd.clear()
lcd.cursor_position(2,0)
lcd.message = "Hello\nCircuitPython"
# Wait 5s
time.sleep(5)
lcd.clear()
# Stars across the display one a time on second row from L to R
# using cursor_position
for i in range(16):
    lcd.cursor_position(i,1)
    lcd.message = "*"
    time.sleep(0.1)
lcd.clear()
# Print two line message right to left
lcd.text_direction = lcd.RIGHT_TO_LEFT
lcd.message = "Hello\nCircuitPython"
# Wait 5s
time.sleep(5)
# Print two line R to L message with cursor set to column 3
lcd.clear()
lcd.text_direction = lcd.RIGHT_TO_LEFT
lcd.cursor_position(3,0)
lcd.message = "Hello\nCircuitPython"
# Wait 3s
time.sleep(3)
# Stars across the display one a time on second row from R to L
lcd.clear()
for i in range(16):
    lcd.cursor_position(i,1)
    lcd.message = "*"
    time.sleep(0.1)
lcd.clear()
# Return text direction to left to right
lcd.text_direction = lcd.LEFT_TO_RIGHT
# Display cursor
lcd.clear()
lcd.cursor = True
lcd.message = "Cursor! "
# Wait 5s
time.sleep(5)
# Display blinking cursor
lcd.clear()
lcd.blink = True
lcd.message = "Blinky Cursor!"
# Wait 5s
time.sleep(5)
lcd.blink = False
lcd.clear()
# Create message to scroll
lcd.cursor_position(5,0)
scroll_msg = '<-- Scroll'
lcd.message = scroll_msg
# Scroll message to the left
for i in range(len(scroll_msg)+5):
    time.sleep(0.5)
    lcd.move_left()
lcd.clear()
lcd.message = "Going to sleep\nCya later!"
time.sleep(3)
# Turn backlight off
lcd.backlight = False
time.sleep(2)