603 lines
22 KiB
Python
603 lines
22 KiB
Python
# Basic LCD display support
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#
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# Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
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# Copyright (C) 2018 Aleph Objects, Inc <marcio@alephobjects.com>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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import logging
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BACKGROUND_PRIORITY_CLOCK = 0x7fffffff00000000
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######################################################################
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# HD44780 (20x4 text) lcd chip
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######################################################################
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HD44780_DELAY = .000037
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class HD44780:
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char_right_arrow = '\x7e'
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char_thermometer = '\x00'
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char_heater_bed = '\x01'
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char_speed_factor = '\x02'
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char_clock = '\x03'
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char_degrees = '\x04'
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def __init__(self, config):
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self.printer = config.get_printer()
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# pin config
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ppins = self.printer.lookup_object('pins')
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pins = [ppins.lookup_pin('digital_out', config.get(name + '_pin'))
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for name in ['rs', 'e', 'd4', 'd5', 'd6', 'd7']]
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mcu = None
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for pin_params in pins:
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if mcu is not None and pin_params['chip'] != mcu:
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raise ppins.error("hd44780 all pins must be on same mcu")
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mcu = pin_params['chip']
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if pin_params['invert']:
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raise ppins.error("hd44780 can not invert pin")
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self.pins = [pin_params['pin'] for pin_params in pins]
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self.mcu = mcu
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self.oid = self.mcu.create_oid()
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self.mcu.add_config_object(self)
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self.send_data_cmd = self.send_cmds_cmd = None
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# framebuffers
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self.text_framebuffer = (bytearray(' '*80), bytearray('~'*80), 0x80)
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self.glyph_framebuffer = (bytearray(64), bytearray('~'*64), 0x40)
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self.framebuffers = [self.text_framebuffer, self.glyph_framebuffer]
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def build_config(self):
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self.mcu.add_config_cmd(
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"config_hd44780 oid=%d rs_pin=%s e_pin=%s"
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" d4_pin=%s d5_pin=%s d6_pin=%s d7_pin=%s delay_ticks=%d" % (
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self.oid, self.pins[0], self.pins[1],
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self.pins[2], self.pins[3], self.pins[4], self.pins[5],
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self.mcu.seconds_to_clock(HD44780_DELAY)))
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cmd_queue = self.mcu.alloc_command_queue()
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self.send_cmds_cmd = self.mcu.lookup_command(
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"hd44780_send_cmds oid=%c cmds=%*s", cq=cmd_queue)
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self.send_data_cmd = self.mcu.lookup_command(
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"hd44780_send_data oid=%c data=%*s", cq=cmd_queue)
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def send(self, cmds, is_data=False):
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cmd_type = self.send_cmds_cmd
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if is_data:
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cmd_type = self.send_data_cmd
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cmd_type.send([self.oid, cmds], reqclock=BACKGROUND_PRIORITY_CLOCK)
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#logging.debug("hd44780 %d %s", is_data, repr(cmds))
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def flush(self):
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# Find all differences in the framebuffers and send them to the chip
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for new_data, old_data, fb_id in self.framebuffers:
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if new_data == old_data:
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continue
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# Find the position of all changed bytes in this framebuffer
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diffs = [[i, 1] for i, (nd, od) in enumerate(zip(new_data, old_data))
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if nd != od]
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# Batch together changes that are close to each other
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for i in range(len(diffs)-2, -1, -1):
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pos, count = diffs[i]
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nextpos, nextcount = diffs[i+1]
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if pos + 4 >= nextpos and nextcount < 16:
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diffs[i][1] = nextcount + (nextpos - pos)
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del diffs[i+1]
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# Transmit changes
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for pos, count in diffs:
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chip_pos = pos
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if fb_id == 0x80 and pos >= 40:
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chip_pos += 0x40 - 40
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self.send([fb_id + chip_pos])
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self.send(new_data[pos:pos+count], is_data=True)
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old_data[:] = new_data
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def init(self):
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curtime = self.printer.get_reactor().monotonic()
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print_time = self.mcu.estimated_print_time(curtime)
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# Program 4bit / 2-line mode and then issue 0x02 "Home" command
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init = [[0x33], [0x33], [0x33, 0x22, 0x28, 0x02]]
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# Reset (set positive direction ; enable display and hide cursor)
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init.append([0x06, 0x0c])
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for i, cmds in enumerate(init):
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minclock = self.mcu.print_time_to_clock(print_time + i * .100)
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self.send_cmds_cmd.send([self.oid, cmds], minclock=minclock)
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# Add custom fonts
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self.glyph_framebuffer[0][:len(HD44780_chars)] = HD44780_chars
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for i in range(len(self.glyph_framebuffer[0])):
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self.glyph_framebuffer[1][i] = self.glyph_framebuffer[0][i] ^ 1
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self.flush()
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def write_text(self, x, y, data):
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if x + len(data) > 20:
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data = data[:20 - min(x, 20)]
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pos = [0, 40, 20, 60][y] + x
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self.text_framebuffer[0][pos:pos+len(data)] = data
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def clear(self):
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self.text_framebuffer[0][:] = ' '*80
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HD44780_chars = [
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# Thermometer
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0b00100,
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0b01010,
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0b01010,
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0b01010,
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0b01010,
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0b10001,
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0b10001,
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0b01110,
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# Heated bed
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0b00000,
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0b11111,
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0b10101,
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0b10001,
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0b10101,
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0b11111,
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0b00000,
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0b00000,
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# Speed factor
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0b11100,
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0b10000,
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0b11000,
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0b10111,
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0b00101,
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0b00110,
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0b00101,
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0b00000,
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# Clock
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0b00000,
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0b01110,
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0b10011,
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0b10101,
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0b10001,
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0b01110,
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0b00000,
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0b00000,
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# Degrees
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0b01100,
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0b10010,
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0b10010,
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0b01100,
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0b00000,
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0b00000,
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0b00000,
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0b00000,
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]
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######################################################################
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# ST7920 (128x64 graphics) lcd chip
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######################################################################
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ST7920_DELAY = .000020 # Spec says 72us, but faster is possible in practice
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class ST7920:
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char_right_arrow = '\x1a'
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def __init__(self, config):
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printer = config.get_printer()
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# pin config
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ppins = printer.lookup_object('pins')
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pins = [ppins.lookup_pin('digital_out', config.get(name + '_pin'))
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for name in ['cs', 'sclk', 'sid']]
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mcu = None
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for pin_params in pins:
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if mcu is not None and pin_params['chip'] != mcu:
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raise ppins.error("st7920 all pins must be on same mcu")
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mcu = pin_params['chip']
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if pin_params['invert']:
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raise ppins.error("st7920 can not invert pin")
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self.pins = [pin_params['pin'] for pin_params in pins]
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self.mcu = mcu
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self.oid = self.mcu.create_oid()
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self.mcu.add_config_object(self)
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self.send_data_cmd = self.send_cmds_cmd = None
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self.is_extended = False
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# framebuffers
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self.text_framebuffer = (bytearray(' '*64), bytearray('~'*64), 0x80)
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self.glyph_framebuffer = (bytearray(128), bytearray('~'*128), 0x40)
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self.graphics_framebuffers = [(bytearray(32), bytearray('~'*32), i)
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for i in range(32)]
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self.framebuffers = ([self.text_framebuffer, self.glyph_framebuffer]
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+ self.graphics_framebuffers)
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def build_config(self):
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self.mcu.add_config_cmd(
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"config_st7920 oid=%u cs_pin=%s sclk_pin=%s sid_pin=%s"
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" delay_ticks=%d" % (
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self.oid, self.pins[0], self.pins[1], self.pins[2],
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self.mcu.seconds_to_clock(ST7920_DELAY)))
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cmd_queue = self.mcu.alloc_command_queue()
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self.send_cmds_cmd = self.mcu.lookup_command(
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"st7920_send_cmds oid=%c cmds=%*s", cq=cmd_queue)
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self.send_data_cmd = self.mcu.lookup_command(
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"st7920_send_data oid=%c data=%*s", cq=cmd_queue)
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def send(self, cmds, is_data=False, is_extended=False):
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cmd_type = self.send_cmds_cmd
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if is_data:
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cmd_type = self.send_data_cmd
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elif self.is_extended != is_extended:
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add_cmd = 0x22
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if is_extended:
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add_cmd = 0x26
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cmds = [add_cmd] + cmds
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self.is_extended = is_extended
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cmd_type.send([self.oid, cmds], reqclock=BACKGROUND_PRIORITY_CLOCK)
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#logging.debug("st7920 %d %s", is_data, repr(cmds))
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def flush(self):
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# Find all differences in the framebuffers and send them to the chip
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for new_data, old_data, fb_id in self.framebuffers:
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if new_data == old_data:
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continue
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# Find the position of all changed bytes in this framebuffer
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diffs = [[i, 1] for i, (nd, od) in enumerate(zip(new_data, old_data))
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if nd != od]
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# Batch together changes that are close to each other
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for i in range(len(diffs)-2, -1, -1):
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pos, count = diffs[i]
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nextpos, nextcount = diffs[i+1]
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if pos + 5 >= nextpos and nextcount < 16:
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diffs[i][1] = nextcount + (nextpos - pos)
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del diffs[i+1]
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# Transmit changes
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for pos, count in diffs:
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count += pos & 0x01
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count += count & 0x01
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pos = pos & ~0x01
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chip_pos = pos >> 1
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if fb_id < 0x40:
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# Graphics framebuffer update
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self.send([0x80 + fb_id, 0x80 + chip_pos], is_extended=True)
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else:
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self.send([fb_id + chip_pos])
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self.send(new_data[pos:pos+count], is_data=True)
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old_data[:] = new_data
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def init(self):
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cmds = [0x24, # Enter extended mode
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0x40, # Clear vertical scroll address
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0x02, # Enable CGRAM access
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0x26, # Enable graphics
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0x22, # Leave extended mode
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0x02, # Home the display
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0x06, # Set positive update direction
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0x0c] # Enable display and hide cursor
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self.send(cmds)
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self.flush()
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def load_glyph(self, glyph_id, data):
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if len(data) > 32:
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data = data[:32]
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pos = min(glyph_id * 32, 96)
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self.glyph_framebuffer[0][pos:pos+len(data)] = data
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def write_text(self, x, y, data):
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if x + len(data) > 16:
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data = data[:16 - min(x, 16)]
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pos = [0, 32, 16, 48][y] + x
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self.text_framebuffer[0][pos:pos+len(data)] = data
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def write_graphics(self, x, y, row, data):
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if x + len(data) > 16:
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data = data[:16 - min(x, 16)]
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gfx_fb = y * 16 + row
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if gfx_fb >= 32:
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gfx_fb -= 32
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x += 16
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self.graphics_framebuffers[gfx_fb][0][x:x+len(data)] = data
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def clear(self):
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self.text_framebuffer[0][:] = ' '*64
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zeros = bytearray(32)
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for new_data, old_data, fb_id in self.graphics_framebuffers:
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new_data[:] = zeros
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######################################################################
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# Icons
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######################################################################
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nozzle_icon = [
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0b0000000000000000,
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0b0000000000000000,
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0b0000111111110000,
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0b0001111111111000,
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0b0001111111111000,
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0b0001111111111000,
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0b0000111111110000,
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0b0000111111110000,
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0b0001111111111000,
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0b0001111111111000,
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0b0001111111111000,
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0b0000011111100000,
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0b0000001111000000,
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0b0000000110000000,
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0b0000000000000000,
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0b0000000000000000
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]
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bed_icon = [
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0111111111111110,
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0b0111111111111110,
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0b0000000000000000,
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0b0000000000000000
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]
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heat1_icon = [
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0b0000000000000000,
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0b0000000000000000,
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0b0010001000100000,
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0b0001000100010000,
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0b0000100010001000,
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0b0000100010001000,
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0b0001000100010000,
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0b0010001000100000,
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0b0010001000100000,
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0b0001000100010000,
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0b0000100010001000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000
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]
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heat2_icon = [
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0b0000000000000000,
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0b0000000000000000,
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0b0000100010001000,
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0b0000100010001000,
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0b0001000100010000,
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0b0010001000100000,
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0b0010001000100000,
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0b0001000100010000,
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0b0000100010001000,
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0b0000100010001000,
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0b0001000100010000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000,
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0b0000000000000000
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]
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fan1_icon = [
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0b0000000000000000,
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0b0111111111111110,
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0b0111000000001110,
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0b0110001111000110,
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0b0100001111000010,
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0b0100000110000010,
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0b0101100000011010,
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0b0101110110111010,
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0b0101100000011010,
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0b0100000110000010,
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0b0100001111000010,
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0b0110001111000110,
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0b0111000000001110,
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0b0111111111111110,
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0b0000000000000000,
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0b0000000000000000
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]
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fan2_icon = [
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0b0000000000000000,
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0b0111111111111110,
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0b0111000000001110,
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0b0110010000100110,
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0b0100111001110010,
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0b0101111001111010,
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0b0100110000110010,
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0b0100000110000010,
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0b0100110000110010,
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0b0101111001111010,
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0b0100111001110010,
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0b0110010000100110,
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0b0111000000001110,
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0b0111111111111110,
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0b0000000000000000,
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0b0000000000000000
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]
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feedrate_icon = [
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0b0000000000000000,
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0b0111111000000000,
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0b0100000000000000,
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0b0100000000000000,
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0b0100000000000000,
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0b0111111011111000,
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0b0100000010000100,
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0b0100000010000100,
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0b0100000010000100,
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0b0100000011111000,
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0b0000000010001000,
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0b0000000010000100,
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0b0000000010000100,
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0b0000000010000010,
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0b0000000000000000,
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0b0000000000000000
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]
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######################################################################
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# LCD screen updates
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######################################################################
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LCD_chips = { 'st7920': ST7920, 'hd44780': HD44780 }
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class PrinterLCD:
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def __init__(self, config):
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self.printer = config.get_printer()
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self.reactor = self.printer.get_reactor()
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self.lcd_chip = config.getchoice('lcd_type', LCD_chips)(config)
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self.lcd_type = config.get('lcd_type')
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# printer objects
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self.gcode = self.toolhead = self.sdcard = None
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self.fan = self.extruder0 = self.extruder1 = self.heater_bed = None
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# screen updating
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self.screen_update_timer = self.reactor.register_timer(
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self.screen_update_event)
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# Initialization
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FAN1_GLYPH, FAN2_GLYPH, BED1_GLYPH, BED2_GLYPH = 0, 1, 2, 3
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def printer_state(self, state):
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if state == 'ready':
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self.lcd_chip.init()
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# Load printer objects
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self.gcode = self.printer.lookup_object('gcode')
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self.toolhead = self.printer.lookup_object('toolhead')
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self.sdcard = self.printer.lookup_object('virtual_sdcard', None)
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self.fan = self.printer.lookup_object('fan', None)
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self.extruder0 = self.printer.lookup_object('extruder0', None)
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self.extruder1 = self.printer.lookup_object('extruder1', None)
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self.heater_bed = self.printer.lookup_object('heater_bed', None)
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# Load glyphs
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self.load_glyph(self.BED1_GLYPH, heat1_icon)
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self.load_glyph(self.BED2_GLYPH, heat2_icon)
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self.load_glyph(self.FAN1_GLYPH, fan1_icon)
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self.load_glyph(self.FAN2_GLYPH, fan2_icon)
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# Start screen update timer
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self.reactor.update_timer(self.screen_update_timer, self.reactor.NOW)
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# ST7920 Glyphs
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def load_glyph(self, glyph_id, data):
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if self.lcd_type != 'st7920':
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return
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glyph = [0x00] * (len(data) * 2)
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for i, bits in enumerate(data):
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glyph[i*2] = (bits >> 8) & 0xff
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glyph[i*2 + 1] = bits & 0xff
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return self.lcd_chip.load_glyph(glyph_id, glyph)
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def animate_glyphs(self, eventtime, x, y, glyph_id, do_animate):
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frame = do_animate and int(eventtime) & 1
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self.lcd_chip.write_text(x, y, (0, (glyph_id + frame)*2))
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# Graphics drawing
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def draw_icon(self, x, y, data):
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for i, bits in enumerate(data):
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self.lcd_chip.write_graphics(
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x, y, i, [(bits >> 8) & 0xff, bits & 0xff])
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def draw_progress_bar(self, x, y, width, value):
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value = int(value * 100.)
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data = [0x00] * width
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char_pcnt = int(100/width)
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for i in range(width):
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if (i+1)*char_pcnt <= value:
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# Draw completely filled bytes
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data[i] |= 0xFF
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elif (i*char_pcnt) < value:
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# Draw partially filled bytes
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data[i] |= (-1 << 8-((value % char_pcnt)*8/char_pcnt)) & 0xff
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data[0] |= 0x80
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data[-1] |= 0x01
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self.lcd_chip.write_graphics(x, y, 0, [0xff]*width)
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for i in range(1, 15):
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self.lcd_chip.write_graphics(x, y, i, data)
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self.lcd_chip.write_graphics(x, y, 15, [0xff]*width)
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# Screen updating
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def screen_update_event(self, eventtime):
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self.lcd_chip.clear()
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if self.lcd_type == 'hd44780':
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self.screen_update_hd44780(eventtime)
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else:
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self.screen_update_st7920(eventtime)
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self.lcd_chip.flush()
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return eventtime + .500
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def screen_update_hd44780(self, eventtime):
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lcd_chip = self.lcd_chip
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# Heaters
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if self.extruder0 is not None:
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info = self.extruder0.get_heater().get_status(eventtime)
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lcd_chip.write_text(0, 0, lcd_chip.char_thermometer)
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self.draw_heater(1, 0, info)
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if self.extruder1 is not None:
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info = self.extruder1.get_heater().get_status(eventtime)
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lcd_chip.write_text(0, 1, lcd_chip.char_thermometer)
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self.draw_heater(1, 1, info)
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|
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)
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|
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'])
|
|
# SD card print progress
|
|
if self.sdcard is not None:
|
|
info = self.sdcard.get_status(eventtime)
|
|
lcd_chip.write_text(7, 2, "SD")
|
|
self.draw_percent(9, 2, 4, info['progress'])
|
|
# Printing time and status
|
|
toolhead_info = self.toolhead.get_status(eventtime)
|
|
lcd_chip.write_text(14, 2, lcd_chip.char_clock)
|
|
self.draw_time(15, 2, toolhead_info['printing_time'])
|
|
self.draw_status(0, 3, gcode_info, toolhead_info)
|
|
def screen_update_st7920(self, eventtime):
|
|
# Heaters
|
|
if self.extruder0 is not None:
|
|
info = self.extruder0.get_heater().get_status(eventtime)
|
|
self.draw_icon(0, 0, 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, 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, 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
|
|
if self.sdcard is not None:
|
|
info = self.sdcard.get_status(eventtime)
|
|
if extruder_count == 1:
|
|
x, y, width = 0, 2, 10
|
|
else:
|
|
x, y, width = 10, 1, 6
|
|
self.draw_percent(x, y, width, info['progress'])
|
|
self.draw_progress_bar(x, y, width, info['progress'])
|
|
# G-Code speed factor
|
|
gcode_info = self.gcode.get_status(eventtime)
|
|
if extruder_count == 1:
|
|
self.draw_icon(10, 1, feedrate_icon)
|
|
self.draw_percent(12, 1, 4, gcode_info['speed_factor'])
|
|
# Printing time and status
|
|
toolhead_info = self.toolhead.get_status(eventtime)
|
|
self.draw_time(10, 2, toolhead_info['printing_time'])
|
|
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):
|
|
self.lcd_chip.write_text(x, y, ("%d%%" % (value * 100.,)).center(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 load_config(config):
|
|
return PrinterLCD(config)
|