diff options
Diffstat (limited to 'klippy/extras/display/display.py')
| -rw-r--r-- | klippy/extras/display/display.py | 171 |
1 files changed, 2 insertions, 169 deletions
diff --git a/klippy/extras/display/display.py b/klippy/extras/display/display.py index b62e8534..b877647a 100644 --- a/klippy/extras/display/display.py +++ b/klippy/extras/display/display.py @@ -6,179 +6,12 @@ # # This file may be distributed under the terms of the GNU GPLv3 license. import logging +import hd44780 BACKGROUND_PRIORITY_CLOCK = 0x7fffffff00000000 ###################################################################### -# HD44780 (20x4 text) lcd chip -###################################################################### - -HD44780_DELAY = .000037 - -class HD44780: - char_right_arrow = '\x7e' - char_thermometer = '\x00' - char_heater_bed = '\x01' - char_speed_factor = '\x02' - char_clock = '\x03' - char_degrees = '\x04' - char_usb = '\x05' - char_sd = '\x06' - def __init__(self, config): - self.printer = config.get_printer() - # pin config - ppins = self.printer.lookup_object('pins') - pins = [ppins.lookup_pin('digital_out', config.get(name + '_pin')) - for name in ['rs', 'e', 'd4', 'd5', 'd6', 'd7']] - mcu = None - for pin_params in pins: - if mcu is not None and pin_params['chip'] != mcu: - raise ppins.error("hd44780 all pins must be on same mcu") - mcu = pin_params['chip'] - if pin_params['invert']: - raise ppins.error("hd44780 can not invert pin") - self.pins = [pin_params['pin'] for pin_params in pins] - self.mcu = mcu - self.oid = self.mcu.create_oid() - self.mcu.add_config_object(self) - self.send_data_cmd = self.send_cmds_cmd = None - # framebuffers - self.text_framebuffer = (bytearray(' '*80), bytearray('~'*80), 0x80) - self.glyph_framebuffer = (bytearray(64), bytearray('~'*64), 0x40) - self.framebuffers = [self.text_framebuffer, self.glyph_framebuffer] - def build_config(self): - self.mcu.add_config_cmd( - "config_hd44780 oid=%d rs_pin=%s e_pin=%s" - " d4_pin=%s d5_pin=%s d6_pin=%s d7_pin=%s delay_ticks=%d" % ( - self.oid, self.pins[0], self.pins[1], - self.pins[2], self.pins[3], self.pins[4], self.pins[5], - self.mcu.seconds_to_clock(HD44780_DELAY))) - cmd_queue = self.mcu.alloc_command_queue() - self.send_cmds_cmd = self.mcu.lookup_command( - "hd44780_send_cmds oid=%c cmds=%*s", cq=cmd_queue) - self.send_data_cmd = self.mcu.lookup_command( - "hd44780_send_data oid=%c data=%*s", cq=cmd_queue) - def send(self, cmds, is_data=False): - cmd_type = self.send_cmds_cmd - if is_data: - cmd_type = self.send_data_cmd - cmd_type.send([self.oid, cmds], reqclock=BACKGROUND_PRIORITY_CLOCK) - #logging.debug("hd44780 %d %s", is_data, repr(cmds)) - def flush(self): - # Find all differences in the framebuffers and send them to the chip - for new_data, old_data, fb_id in self.framebuffers: - if new_data == old_data: - continue - # Find the position of all changed bytes in this framebuffer - diffs = [[i, 1] for i, (nd, od) in enumerate(zip(new_data, old_data)) - if nd != od] - # Batch together changes that are close to each other - for i in range(len(diffs)-2, -1, -1): - pos, count = diffs[i] - nextpos, nextcount = diffs[i+1] - if pos + 4 >= nextpos and nextcount < 16: - diffs[i][1] = nextcount + (nextpos - pos) - del diffs[i+1] - # Transmit changes - for pos, count in diffs: - chip_pos = pos - if fb_id == 0x80 and pos >= 40: - chip_pos += 0x40 - 40 - self.send([fb_id + chip_pos]) - self.send(new_data[pos:pos+count], is_data=True) - old_data[:] = new_data - def init(self): - curtime = self.printer.get_reactor().monotonic() - print_time = self.mcu.estimated_print_time(curtime) - # Program 4bit / 2-line mode and then issue 0x02 "Home" command - init = [[0x33], [0x33], [0x33, 0x22, 0x28, 0x02]] - # Reset (set positive direction ; enable display and hide cursor) - init.append([0x06, 0x0c]) - for i, cmds in enumerate(init): - minclock = self.mcu.print_time_to_clock(print_time + i * .100) - self.send_cmds_cmd.send([self.oid, cmds], minclock=minclock) - # Add custom fonts - self.glyph_framebuffer[0][:len(HD44780_chars)] = HD44780_chars - for i in range(len(self.glyph_framebuffer[0])): - self.glyph_framebuffer[1][i] = self.glyph_framebuffer[0][i] ^ 1 - self.flush() - def write_text(self, x, y, data): - if x + len(data) > 20: - data = data[:20 - min(x, 20)] - pos = [0, 40, 20, 60][y] + x - self.text_framebuffer[0][pos:pos+len(data)] = data - def clear(self): - self.text_framebuffer[0][:] = ' '*80 - -HD44780_chars = [ - # Thermometer - 0b00100, - 0b01010, - 0b01010, - 0b01010, - 0b01010, - 0b10001, - 0b10001, - 0b01110, - # Heated bed - 0b00000, - 0b11111, - 0b10101, - 0b10001, - 0b10101, - 0b11111, - 0b00000, - 0b00000, - # Speed factor - 0b11100, - 0b10000, - 0b11000, - 0b10111, - 0b00101, - 0b00110, - 0b00101, - 0b00000, - # Clock - 0b00000, - 0b01110, - 0b10011, - 0b10101, - 0b10001, - 0b01110, - 0b00000, - 0b00000, - # Degrees - 0b01100, - 0b10010, - 0b10010, - 0b01100, - 0b00000, - 0b00000, - 0b00000, - 0b00000, - # USB - 0b01110, - 0b01110, - 0b01110, - 0b11111, - 0b11111, - 0b11111, - 0b00100, - 0b00100, - # SD - 0b00000, - 0b00111, - 0b01111, - 0b11111, - 0b11111, - 0b11111, - 0b11111, - 0b00000, -] - - -###################################################################### # ST7920 (128x64 graphics) lcd chip ###################################################################### @@ -444,7 +277,7 @@ feedrate_icon = [ # LCD screen updates ###################################################################### -LCD_chips = { 'st7920': ST7920, 'hd44780': HD44780 } +LCD_chips = { 'st7920': ST7920, 'hd44780': hd44780.HD44780 } M73_TIMEOUT = 5. class PrinterLCD: |