class LCD_SYS_1:
def __init__(self):
if gv.SYSTEM_MODE == 1 and (gv.USE_HD44780_16x2_LCD or gv.USE_HD44780_20x4_LCD):
# Timing constants
self.E_PULSE = 0.0005
self.E_DELAY = 0.0005
self.display_called = False
self.temp_display = False
if gv.IS_DEBIAN:
self.thread_sleep = 0.05
else:
self.thread_sleep = 0.1
self.timeout_init = 2 # default timeout reset time
self.timeout_length = self.timeout_init # initial timeout length (timeout_custom will override)
self.STRING_1 = ''
self.STRING_2 = ''
self.STRING_3 = ''
self.STRING_4 = ''
self.STRING_1_PRIORITY = ''
self.STRING_2_PRIORITY = ''
self.STRING_3_PRIORITY = ''
self.STRING_4_PRIORITY = ''
self.loop_alive = True
if gv.IS_DEBIAN:
import RPi.GPIO as GPIO
from RPLCD import CharLCD
self.lcd = CharLCD(pin_rs=gv.GPIO_LCD_RS, pin_rw=None, pin_e=gv.GPIO_LCD_E,
pins_data=[gv.GPIO_LCD_D4, gv.GPIO_LCD_D5, gv.GPIO_LCD_D6, gv.GPIO_LCD_D7],
numbering_mode=GPIO.BCM, cols=gv.LCD_COLS, rows=gv.LCD_ROWS, charmap='A00')
self.lcd.clear()
# Hide the cursor
self.lcd._set_cursor_mode("hide")
# Fill the display with blank spaces
for i in range(1, gv.LCD_ROWS+1):
self.lcd_string(' ', i)
# Write custom codes to the LCD
self.lcd.create_char(1, lcdcc.block)
self.lcd.create_char(2, lcdcc.pause)
self.lcd.create_char(3, lcdcc.voice_button_on)
self.lcd.create_char(4, lcdcc.voice_button_off)
self.lcd.create_char(5, lcdcc.block2)
self.lcd.create_char(6, lcdcc.loading_hour_glass)
self.LCDThread = threading.Thread(target=self.lcd_main)
self.LCDThread.daemon = True
self.LCDThread.start()
def reset_after_timeout(self):
self.display_called = False
self.temp_display = False
self.timeout_start = time.time()
def lcd_main(self):
if gv.USE_HD44780_20x4_LCD and gv.IS_DEBIAN:
self.lcd.clear()
# if gv.USE_HD44780_16x2_LCD:
# self.lcd_string("WELCOME TO".center(gv.LCD_COLS, ' '), 1)
# self.lcd_string("SAMPLERBOX".center(gv.LCD_COLS, ' '), 2)
# elif gv.USE_HD44780_20x4_LCD:
# self.lcd_string(unichr(1) * gv.LCD_COLS, 1)
# self.lcd_string("WELCOME TO".center(gv.LCD_COLS, ' '), 2)
# self.lcd_string("SAMPLERBOX".center(gv.LCD_COLS, ' '), 3)
# self.lcd_string(unichr(1) * gv.LCD_COLS, 4)
# time.sleep(0.6)
self.timeout_start = time.time()
print_message = ''
while self.loop_alive:
if self.display_called:
now = time.time()
if (now - self.timeout_start) > self.timeout_length:
self.reset_after_timeout()
if (self.temp_display or gv.displayer.menu_mode == gv.displayer.DISP_UTILS_MODE):
self.lcd_string(self.STRING_1, 1)
self.lcd_string(self.STRING_2, 2)
print_message = "\r%s||%s" % (self.STRING_1[:gv.LCD_COLS], self.STRING_2[:gv.LCD_COLS])
if gv.USE_HD44780_20x4_LCD:
self.lcd_string(self.STRING_3, 3)
self.lcd_string(self.STRING_4, 4)
print_message = "\r%s||%s||%s" % (print_message, self.STRING_3[:gv.LCD_COLS], self.STRING_4[:gv.LCD_COLS])
elif gv.displayer.menu_mode == gv.displayer.DISP_PRESET_MODE:
self.lcd_string(self.STRING_1_PRIORITY, 1)
self.lcd_string(self.STRING_2_PRIORITY, 2)
print_message = "\r%s||%s" % (self.STRING_1_PRIORITY[:gv.LCD_COLS], self.STRING_2_PRIORITY[:gv.LCD_COLS])
if gv.USE_HD44780_20x4_LCD:
self.lcd_string(self.STRING_3_PRIORITY, 3)
self.lcd_string(self.STRING_4_PRIORITY, 4)
print_message = "\r%s||%s||%s" % (print_message, self.STRING_3_PRIORITY[:gv.LCD_COLS], self.STRING_4_PRIORITY[:gv.LCD_COLS])
elif gv.displayer.menu_mode == gv.displayer.DISP_MENU_MODE:
self.lcd_string(self.STRING_1_PRIORITY, 1)
self.lcd_string(self.STRING_2_PRIORITY, 2)
print_message = "\r%s||%s" % (self.STRING_1_PRIORITY[:gv.LCD_COLS], self.STRING_2_PRIORITY[:gv.LCD_COLS])
if gv.USE_HD44780_20x4_LCD:
self.lcd_string(self.STRING_3_PRIORITY, 3)
self.lcd_string(self.STRING_4_PRIORITY, 4)
print_message = "\r%s||%s||%s" % (print_message, self.STRING_3_PRIORITY[:gv.LCD_COLS], self.STRING_4_PRIORITY[:gv.LCD_COLS])
if gv.PRINT_LCD_MESSAGES:
sys.stdout.write(print_message)
sys.stdout.flush()
gui_message = print_message.replace('\r', '')
gui_message = gui_message.replace('||', '\r')
if gv.USE_GUI and not gv.IS_DEBIAN: gv.gui.output['text'] = gui_message
time.sleep(self.thread_sleep)
def lcd_string(self, message, line):
message = message[:gv.LCD_COLS]
message = message.ljust(gv.LCD_COLS, " ")
if (gv.USE_HD44780_16x2_LCD or gv.USE_HD44780_20x4_LCD) and gv.IS_DEBIAN:
self.lcd.write_string(message[:gv.LCD_COLS])
def display(self, message, line=1, is_priority=False, timeout_custom=None):
message += ' ' * gv.LCD_COLS
# Send string to display
if line == 1:
self.STRING_1 = message
if is_priority:
self.STRING_1_PRIORITY = message
else:
self.temp_display = True
if line == 2:
self.STRING_2 = message
if is_priority:
self.STRING_2_PRIORITY = message
else:
self.temp_display = True
if line == 3:
self.STRING_3 = message
if is_priority:
self.STRING_3_PRIORITY = message
else:
self.temp_display = True
if line == 4:
self.STRING_4 = message
if is_priority:
self.STRING_4_PRIORITY = message
else:
self.temp_display = True
if timeout_custom != None:
self.timeout_length = timeout_custom
else:
self.timeout_length = self.timeout_init
self.timeout_start = time.time()
self.display_called = True
def stop(self):
self.lcd.close()
self.loop_alive = False
