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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, icons
LCD_chips = { 'st7920': st7920.ST7920, 'hd44780': hd44780.HD44780, 'uc1701' : uc1701.UC1701 }
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')
# 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
FAN1_GLYPH, FAN2_GLYPH, BED1_GLYPH, BED2_GLYPH = 0, 1, 2, 3
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, desc=self.cmd_M117_help)
# Load glyphs
self.load_glyph(self.BED1_GLYPH, icons.heat1_icon)
self.load_glyph(self.BED2_GLYPH, icons.heat2_icon)
self.load_glyph(self.FAN1_GLYPH, icons.fan1_icon)
self.load_glyph(self.FAN2_GLYPH, icons.fan2_icon)
# Start screen update timer
self.reactor.update_timer(self.screen_update_timer, self.reactor.NOW)
# ST7920/UC1701 Glyphs
def load_glyph(self, glyph_id, data):
if self.lcd_type == 'uc1701':
self.lcd_chip.load_glyph(glyph_id, data)
elif self.lcd_type == 'st7920':
glyph = [0x00] * (len(data) * 2)
for i, bits in enumerate(data):
glyph[i*2] = (bits >> 8) & 0xff
glyph[i*2 + 1] = bits & 0xff
return self.lcd_chip.load_glyph(glyph_id, glyph)
def animate_glyphs(self, eventtime, x, y, glyph_id, do_animate):
frame = do_animate and int(eventtime) & 1
if self.lcd_type == 'uc1701':
self.lcd_chip.write_glyph(x, y, glyph_id + frame)
elif self.lcd_type == 'st7920':
self.lcd_chip.write_text(x, y, (0, (glyph_id + frame)*2))
# Graphics drawing
def draw_icon(self, x, y, data):
for i, bits in enumerate(data):
self.lcd_chip.write_graphics(
x, y, i, [(bits >> 8) & 0xff, bits & 0xff])
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):
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_text(0, 0, lcd_chip.char_thermometer)
self.draw_heater(1, 0, info)
if self.extruder1 is not None:
info = self.extruder1.get_heater().get_status(eventtime)
lcd_chip.write_text(0, 1, lcd_chip.char_thermometer)
self.draw_heater(1, 1, info)
if self.heater_bed is not None:
info = self.heater_bed.get_status(eventtime)
lcd_chip.write_text(10, 0, lcd_chip.char_heater_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_text(0, 2, lcd_chip.char_speed_factor)
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_text(8, 2, lcd_chip.char_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_text(8, 2, lcd_chip.char_sd)
if progress is not None:
self.draw_percent(9, 2, 4, progress)
lcd_chip.write_text(14, 2, lcd_chip.char_clock)
self.draw_time(15, 2, toolhead_info['printing_time'])
# If there is a message set by M117, display it instead of toolhead info
if self.message:
lcd_chip.write_text(0, 3, 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
else:
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.draw_icon(0, 0, icons.nozzle_icon)
self.draw_heater(2, 0, info)
extruder_count = 1
if self.extruder1 is not None:
info = self.extruder1.get_heater().get_status(eventtime)
self.draw_icon(0, 1, icons.nozzle_icon)
self.draw_heater(2, 1, info)
extruder_count = 2
if self.heater_bed is not None:
info = self.heater_bed.get_status(eventtime)
self.draw_icon(0, extruder_count, icons.bed_icon)
if info['target']:
self.animate_glyphs(eventtime, 0, extruder_count,
self.BED1_GLYPH, True)
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, self.FAN1_GLYPH,
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.draw_icon(10, 1, icons.feedrate_icon)
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)
# if there is a message set by M117, display it instead of toolhaed info
if self.message:
self.lcd_chip.write_text(0, 3, 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
else:
self.draw_status(0, 3, gcode_info, toolhead_info)
# Screen update helpers
def draw_heater(self, x, y, info):
temperature, target = info['temperature'], info['target']
if target and abs(temperature - target) > 2.:
s = "%3.0f%s%.0f" % (
temperature, self.lcd_chip.char_right_arrow, target)
else:
s = "%3.0f" % (temperature,)
if self.lcd_type == 'hd44780':
s += self.lcd_chip.char_degrees
self.lcd_chip.write_text(x, y, s)
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):
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 = self.gcode.get_int('P', params, minval=0, maxval=100)
self.prg_time = M73_TIMEOUT
cmd_M117_help = "Show Message on Display"
def cmd_M117(self, params):
if '#original' in params:
msg = params['#original']
if not msg.startswith('M117'):
# Parse out additional info if M117 recd during a print
start = msg.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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