klipper-dgus/klippy/extras/display_status.py

# Module to handle M73 and M117 display status commands
#
# Copyright (C) 2018-2020  Kevin O'Connor <kevin@koconnor.net>
# Copyright (C) 2018  Eric Callahan <arksine.code@gmail.com>
#
# This file may be distributed under the terms of the GNU GPLv3 license.

M73_TIMEOUT = 5.

class DisplayStatus:
    def __init__(self, config):
        self.printer = config.get_printer()
        self.expire_progress = 0.
        self.progress = self.message = None
        # Register commands
        gcode = self.printer.lookup_object('gcode')
        gcode.register_command('M73', self.cmd_M73)
        gcode.register_command('M117', self.cmd_M117)
    def get_status(self, eventtime):
        progress = self.progress
        if progress is not None and eventtime > self.expire_progress:
            idle_timeout = self.printer.lookup_object('idle_timeout')
            idle_timeout_info = idle_timeout.get_status(eventtime)
            if idle_timeout_info['state'] != "Printing":
                self.progress = progress = None
        if progress is None:
            progress = 0.
            sdcard = self.printer.lookup_object('virtual_sdcard', None)
            if sdcard is not None:
                progress = sdcard.get_status(eventtime)['progress']
        return { 'progress': progress, 'message': self.message }
    def cmd_M73(self, gcmd):
        progress = gcmd.get_float('P', 0.) / 100.
        self.progress = min(1., max(0., progress))
        curtime = self.printer.get_reactor().monotonic()
        self.expire_progress = curtime + M73_TIMEOUT
    def cmd_M117(self, gcmd):
        msg = gcmd.get_commandline()
        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:
            self.message = msg[5:]
        else:
            self.message = None

def load_config(config):
    return DisplayStatus(config)