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# Basic LCD display support
#
# Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
# Copyright (C) 2018 Aleph Objects, Inc <marcio@alephobjects.com>
# Copyright (C) 2018 Eric Callahan <arksine.code@gmail.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import logging
import hd44780, st7920, uc1701
import menu
LCD_chips = {
'st7920': st7920.ST7920, 'hd44780': hd44780.HD44780,
'uc1701' : uc1701.UC1701, 'ssd1306': uc1701.SSD1306,
}
M73_TIMEOUT = 5.
class PrinterLCD:
def __init__(self, config):
self.printer = config.get_printer()
self.reactor = self.printer.get_reactor()
self.lcd_chip = config.getchoice('lcd_type', LCD_chips)(config)
self.lcd_type = config.get('lcd_type')
# menu
self.menu = menu.MenuManager(config, self.lcd_chip)
# printer objects
self.gcode = self.toolhead = self.sdcard = None
self.fan = self.extruder0 = self.extruder1 = self.heater_bed = None
# screen updating
self.screen_update_timer = self.reactor.register_timer(
self.screen_update_event)
# Initialization
def printer_state(self, state):
if state == 'ready':
self.lcd_chip.init()
# Load printer objects
self.gcode = self.printer.lookup_object('gcode')
self.toolhead = self.printer.lookup_object('toolhead')
self.sdcard = self.printer.lookup_object('virtual_sdcard', None)
self.fan = self.printer.lookup_object('fan', None)
self.extruder0 = self.printer.lookup_object('extruder0', None)
self.extruder1 = self.printer.lookup_object('extruder1', None)
self.heater_bed = self.printer.lookup_object('heater_bed', None)
self.prg_time = .0
self.progress = None
self.msg_time = None
self.message = None
self.gcode.register_command('M73', self.cmd_M73)
self.gcode.register_command('M117', self.cmd_M117)
# Start screen update timer
self.reactor.update_timer(self.screen_update_timer, self.reactor.NOW)
# Graphics drawing
def animate_glyphs(self, eventtime, x, y, glyph_name, do_animate):
frame = do_animate and int(eventtime) & 1
self.lcd_chip.write_glyph(x, y, glyph_name + str(frame + 1))
def draw_progress_bar(self, x, y, width, value):
value = int(value * 100.)
data = [0x00] * width
char_pcnt = int(100/width)
for i in range(width):
if (i+1)*char_pcnt <= value:
# Draw completely filled bytes
data[i] |= 0xFF
elif (i*char_pcnt) < value:
# Draw partially filled bytes
data[i] |= (-1 << 8-((value % char_pcnt)*8/char_pcnt)) & 0xff
data[0] |= 0x80
data[-1] |= 0x01
self.lcd_chip.write_graphics(x, y, 0, [0xff]*width)
for i in range(1, 15):
self.lcd_chip.write_graphics(x, y, i, data)
self.lcd_chip.write_graphics(x, y, 15, [0xff]*width)
# Screen updating
def screen_update_event(self, eventtime):
# update menu component
ret = self.menu.screen_update_event(eventtime)
if ret:
return ret
# update all else
self.lcd_chip.clear()
if self.lcd_type == 'hd44780':
self.screen_update_hd44780(eventtime)
else:
self.screen_update_128x64(eventtime)
self.lcd_chip.flush()
return eventtime + .500
def screen_update_hd44780(self, eventtime):
lcd_chip = self.lcd_chip
# Heaters
if self.extruder0 is not None:
info = self.extruder0.get_heater().get_status(eventtime)
lcd_chip.write_glyph(0, 0, 'extruder')
self.draw_heater(1, 0, info)
if self.extruder1 is not None:
info = self.extruder1.get_heater().get_status(eventtime)
lcd_chip.write_glyph(0, 1, 'extruder')
self.draw_heater(1, 1, info)
if self.heater_bed is not None:
info = self.heater_bed.get_status(eventtime)
lcd_chip.write_glyph(10, 0, 'bed')
self.draw_heater(11, 0, info)
# Fan speed
if self.fan is not None:
info = self.fan.get_status(eventtime)
lcd_chip.write_text(10, 1, "Fan")
self.draw_percent(14, 1, 4, info['speed'])
# G-Code speed factor
gcode_info = self.gcode.get_status(eventtime)
lcd_chip.write_glyph(0, 2, 'feedrate')
self.draw_percent(1, 2, 4, gcode_info['speed_factor'])
# Print progress
progress = None
toolhead_info = self.toolhead.get_status(eventtime)
if self.progress is not None:
progress = self.progress / 100.
lcd_chip.write_glyph(8, 2, 'usb')
if toolhead_info['status'] != "Printing":
# 5 second timeout when not printing
self.prg_time -= .5
if self.prg_time <= 0.:
self.progress = None
elif self.sdcard is not None:
info = self.sdcard.get_status(eventtime)
progress = info['progress']
lcd_chip.write_glyph(8, 2, 'sd')
if progress is not None:
self.draw_percent(9, 2, 4, progress)
lcd_chip.write_glyph(14, 2, 'clock')
self.draw_time(15, 2, toolhead_info['printing_time'])
self.draw_status(0, 3, gcode_info, toolhead_info)
def screen_update_128x64(self, eventtime):
# Heaters
if self.extruder0 is not None:
info = self.extruder0.get_heater().get_status(eventtime)
self.lcd_chip.write_glyph(0, 0, 'extruder')
self.draw_heater(2, 0, info)
extruder_count = 1
if self.extruder1 is not None:
info = self.extruder1.get_heater().get_status(eventtime)
self.lcd_chip.write_glyph(0, 1, 'extruder')
self.draw_heater(2, 1, info)
extruder_count = 2
if self.heater_bed is not None:
info = self.heater_bed.get_status(eventtime)
if info['target']:
self.animate_glyphs(eventtime, 0, extruder_count,
'bed_heat', True)
else:
self.lcd_chip.write_glyph(0, extruder_count, 'bed')
self.draw_heater(2, extruder_count, info)
# Fan speed
if self.fan is not None:
info = self.fan.get_status(eventtime)
self.animate_glyphs(eventtime, 10, 0, 'fan', info['speed'] != 0.)
self.draw_percent(12, 0, 4, info['speed'], '>')
# SD card print progress
progress = None
toolhead_info = self.toolhead.get_status(eventtime)
if self.progress is not None:
progress = self.progress / 100.
if toolhead_info['status'] != "Printing":
# 5 second timeout when not printing
self.prg_time -= .5
if self.prg_time <= 0.:
self.progress = None
elif self.sdcard is not None:
info = self.sdcard.get_status(eventtime)
progress = info['progress']
if progress is not None:
if extruder_count == 1:
x, y, width = 0, 2, 10
else:
x, y, width = 10, 1, 6
self.draw_percent(x, y, width, progress, '^')
self.draw_progress_bar(x, y, width, progress)
# G-Code speed factor
gcode_info = self.gcode.get_status(eventtime)
if extruder_count == 1:
self.lcd_chip.write_glyph(10, 1, 'feedrate')
self.draw_percent(12, 1, 4, gcode_info['speed_factor'], '>')
# Printing time and status
printing_time = toolhead_info['printing_time']
remaining_time = None
if progress is not None and progress > 0:
remaining_time = int(printing_time / progress) - printing_time
# switch mode every 6s
if remaining_time is not None and int(eventtime) % 12 < 6:
self.lcd_chip.write_text(10, 2, "-")
self.draw_time(11, 2, remaining_time)
else:
offset = 1 if printing_time < 100 * 60 * 60 else 0
self.draw_time(10 + offset, 2, printing_time)
self.draw_status(0, 3, gcode_info, toolhead_info)
# Screen update helpers
def draw_text(self, x, y, mixed_text):
pos = x
for i, text in enumerate(mixed_text.split('~')):
if i & 1 == 0:
# write text
self.lcd_chip.write_text(pos, y, text)
pos += len(text)
else:
# write glyph
pos += self.lcd_chip.write_glyph(pos, y, text)
def draw_heater(self, x, y, info):
temperature, target = info['temperature'], info['target']
if target and abs(temperature - target) > 2.:
self.draw_text(x, y, "%3.0f~right_arrow~%.0f~degrees~" % (
temperature, target))
else:
self.draw_text(x, y, "%3.0f~degrees~" % (temperature,))
def draw_percent(self, x, y, width, value, align='^'):
self.lcd_chip.write_text(x, y, '{:{}{}.0%}'.format(value, align, width))
def draw_time(self, x, y, seconds):
seconds = int(seconds)
self.lcd_chip.write_text(x, y, "%02d:%02d" % (
seconds // (60 * 60), (seconds // 60) % 60))
def draw_status(self, x, y, gcode_info, toolhead_info):
# If there is a message set by M117, display it instead of toolhead info
if self.message:
self.lcd_chip.write_text(x, y, self.message)
if self.msg_time:
# Screen updates every .5 seconds
self.msg_time -= .5
if self.msg_time <= 0.:
self.message = None
self.msg_time = None
return
status = toolhead_info['status']
if status == 'Printing' or gcode_info['busy']:
pos = self.toolhead.get_position()
status = "X%-4.0fY%-4.0fZ%-5.2f" % (pos[0], pos[1], pos[2])
self.lcd_chip.write_text(x, y, status)
def set_message(self, msg, msg_time=None):
self.message = msg
self.msg_time = msg_time
# print progress: M73 P<percent>
def cmd_M73(self, params):
self.progress = min(100., max(0., self.gcode.get_float(
'P', params, 0.)))
self.prg_time = M73_TIMEOUT
def cmd_M117(self, params):
if '#original' in params:
msg = params['#original']
umsg = msg.upper()
if not umsg.startswith('M117'):
# Parse out additional info if M117 recd during a print
start = umsg.find('M117')
end = msg.rfind('*')
msg = msg[start:end]
if len(msg) > 5:
msg = msg[5:]
self.set_message(msg)
else:
self.set_message(None)
def load_config(config):
return PrinterLCD(config)
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