from RPLCD_i2c import CharLCD
from RPLCD_i2c import Alignment, CursorMode, ShiftMode
from RPLCD_i2c import cursor, cleared
try:
input = raw_input
except NameError:
pass
try:
unichr = unichr
except NameError:
unichr = chr
lcd = CharLCD(address=0x38, port=1, cols=20, rows=4, dotsize=8)
input('Display should be blank. ')
lcd.cursor_mode = CursorMode.blink
input('The cursor should now blink. ')
lcd.cursor_mode = CursorMode.line
input('The cursor should now be a line. ')
lcd.write_string('Hello world!')
input('"Hello world!" should be on the LCD. ')
assert lcd.cursor_pos == (0, 12), 'cursor_pos should now be (0, 12)'
lcd.cursor_pos = (1, 0)
safe_input = input
try:
unichr = unichr
except NameError: # Python 3
unichr = chr
if __name__ == '__main__':
if len(sys.argv) != 3:
print('Usage: %s <rows> <cols>' % sys.argv[0])
sys.exit(1)
rows, cols = int(sys.argv[1]), int(sys.argv[2])
lcd = CharLCD(address=0x3F,
port=1,
cols=cols,
rows=rows,
dotsize=8,
ignore_special=True)
print('This tool shows the character map of your LCD on the display.')
print('Press ctrl+c at any time to abort.\n')
page = 0
chars_per_page = rows * cols
try:
while True:
page_start = page * chars_per_page
page_end = page_start + chars_per_page
if page_end > 256:
page_end = 256
cur_hour = int(tens_hour) * 10 + int(hour)
# enable backlight by night
lcd.set_backlight(cur_hour >= 19 or cur_hour < 9)
# dots blink
clock_dots()
if counter == 15:
counter = 0
# date display
clock_date(digits, month, day_name)
# temperature display
clock_temp()
# temperature display
clock_hour(digits)
if __name__ == '__main__':
lcd = CharLCD(address=0x3F, port=1, cols=16, rows=2, dotsize=8)
try:
main()
except KeyboardInterrupt:
pass
finally:
lcd.clear()
lcd.set_backlight(False)
lcd.home()