# *************************************************************************** # * (c) sliptonic (shopinthewoods@gmail.com) 2017 * # * * # * This file is part of the FreeCAD CAx development system. * # * * # * This program is free software; you can redistribute it and/or modify * # * it under the terms of the GNU Lesser General Public License (LGPL) * # * as published by the Free Software Foundation; either version 2 of * # * the License, or (at your option) any later version. * # * for detail see the LICENCE text file. * # * * # * FreeCAD is distributed in the hope that it will be useful, * # * but WITHOUT ANY WARRANTY; without even the implied warranty of * # * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * # * GNU Lesser General Public License for more details. * # * * # * You should have received a copy of the GNU Library General Public * # * License along with FreeCAD; if not, write to the Free Software * # * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * # * USA * # * * # ***************************************************************************/ from __future__ import print_function import argparse import datetime from PathScripts import PostUtils import FreeCAD from FreeCAD import Units import shlex TOOLTIP = ''' This is a postprocessor file for the Path workbench. It is used to take a pseudo-gcode fragment outputted by a Path object, and output real GCode suitable for a smoothieboard. This postprocessor, once placed in the appropriate PathScripts folder, can be used directly from inside FreeCAD, via the GUI importer or via python scripts with: import smoothie_post smoothie_post.export(object,"/path/to/file.ncc","") ''' now = datetime.datetime.now() parser = argparse.ArgumentParser(prog='linuxcnc', add_help=False) parser.add_argument('--header', action='store_true', help='output headers (default)') parser.add_argument('--no-header', action='store_true', help='suppress header output') parser.add_argument('--comments', action='store_true', help='output comment (default)') parser.add_argument('--no-comments', action='store_true', help='suppress comment output') parser.add_argument('--line-numbers', action='store_true', help='prefix with line numbers') parser.add_argument('--no-line-numbers', action='store_true', help='don\'t prefix with line numbers (default)') parser.add_argument('--show-editor', action='store_true', help='pop up editor before writing output (default)') parser.add_argument('--no-show-editor', action='store_true', help='don\'t pop up editor before writing output') parser.add_argument('--precision', default='4', help='number of digits of precision, default=4') parser.add_argument('--preamble', help='set commands to be issued before the first command, default="G17\nG90"') parser.add_argument('--postamble', help='set commands to be issued after the last command, default="M05\nG17 G90\nM2"') parser.add_argument('--IP_ADDR', help='IP Address for machine target machine') parser.add_argument('--verbose', action='store_true', help='verbose output for debugging, default="False"') parser.add_argument('--inches', action='store_true', help='Convert output for US imperial mode (G20)') TOOLTIP_ARGS = parser.format_help() # These globals set common customization preferences OUTPUT_COMMENTS = True OUTPUT_HEADER = True OUTPUT_LINE_NUMBERS = False IP_ADDR = None VERBOSE = False SPINDLE_SPEED = 0.0 if FreeCAD.GuiUp: SHOW_EDITOR = True else: SHOW_EDITOR = False MODAL = False # if true commands are suppressed if the same as previous line. COMMAND_SPACE = " " LINENR = 100 # line number starting value # These globals will be reflected in the Machine configuration of the project UNITS = "G21" # G21 for metric, G20 for us standard UNIT_SPEED_FORMAT = 'mm/min' UNIT_FORMAT = 'mm' MACHINE_NAME = "SmoothieBoard" CORNER_MIN = {'x': 0, 'y': 0, 'z': 0} CORNER_MAX = {'x': 500, 'y': 300, 'z': 300} # Preamble text will appear at the beginning of the GCODE output file. PREAMBLE = '''G17 G90 ''' # Postamble text will appear following the last operation. POSTAMBLE = '''M05 G17 G90 M2 ''' # Pre operation text will be inserted before every operation PRE_OPERATION = '''''' # Post operation text will be inserted after every operation POST_OPERATION = '''''' # Tool Change commands will be inserted before a tool change TOOL_CHANGE = '''''' # Number of digits after the decimal point PRECISION = 5 # to distinguish python built-in open function from the one declared below if open.__module__ in ['__builtin__', 'io']: pythonopen = open def processArguments(argstring): # pylint: disable=global-statement global OUTPUT_HEADER global OUTPUT_COMMENTS global OUTPUT_LINE_NUMBERS global SHOW_EDITOR global IP_ADDR global VERBOSE global PRECISION global PREAMBLE global POSTAMBLE global UNITS global UNIT_SPEED_FORMAT global UNIT_FORMAT try: args = parser.parse_args(shlex.split(argstring)) if args.no_header: OUTPUT_HEADER = False if args.header: OUTPUT_HEADER = True if args.no_comments: OUTPUT_COMMENTS = False if args.comments: OUTPUT_COMMENTS = True if args.no_line_numbers: OUTPUT_LINE_NUMBERS = False if args.line_numbers: OUTPUT_LINE_NUMBERS = True if args.no_show_editor: SHOW_EDITOR = False if args.show_editor: SHOW_EDITOR = True print("Show editor = %d" % SHOW_EDITOR) PRECISION = args.precision if args.preamble is not None: PREAMBLE = args.preamble if args.postamble is not None: POSTAMBLE = args.postamble if args.inches: UNITS = 'G20' UNIT_SPEED_FORMAT = 'in/min' UNIT_FORMAT = 'in' IP_ADDR = args.IP_ADDR VERBOSE = args.verbose except Exception: # pylint: disable=broad-except return False return True def export(objectslist, filename, argstring): processArguments(argstring) global UNITS # pylint: disable=global-statement for obj in objectslist: if not hasattr(obj, "Path"): FreeCAD.Console.PrintError("the object " + obj.Name + " is not a path. Please select only path and Compounds.\n") return FreeCAD.Console.PrintMessage("postprocessing...\n") gcode = "" # Find the machine. # The user my have overridden post processor defaults in the GUI. Make # sure we're using the current values in the Machine Def. myMachine = None for pathobj in objectslist: if hasattr(pathobj, "MachineName"): myMachine = pathobj.MachineName if hasattr(pathobj, "MachineUnits"): if pathobj.MachineUnits == "Metric": UNITS = "G21" else: UNITS = "G20" if myMachine is None: FreeCAD.Console.PrintWarning("No machine found in this selection\n") # write header if OUTPUT_HEADER: gcode += linenumber() + "(Exported by FreeCAD)\n" gcode += linenumber() + "(Post Processor: " + __name__ + ")\n" gcode += linenumber() + "(Output Time:" + str(now) + ")\n" # Write the preamble if OUTPUT_COMMENTS: gcode += linenumber() + "(begin preamble)\n" for line in PREAMBLE.splitlines(True): gcode += linenumber() + line gcode += linenumber() + UNITS + "\n" for obj in objectslist: # do the pre_op if OUTPUT_COMMENTS: gcode += linenumber() + "(begin operation: " + obj.Label + ")\n" for line in PRE_OPERATION.splitlines(True): gcode += linenumber() + line gcode += parse(obj) # do the post_op if OUTPUT_COMMENTS: gcode += linenumber() + "(finish operation: " + obj.Label + ")\n" for line in POST_OPERATION.splitlines(True): gcode += linenumber() + line # do the post_amble if OUTPUT_COMMENTS: gcode += "(begin postamble)\n" for line in POSTAMBLE.splitlines(True): gcode += linenumber() + line if SHOW_EDITOR: dia = PostUtils.GCodeEditorDialog() dia.editor.setText(gcode) result = dia.exec_() if result: final = dia.editor.toPlainText() else: final = gcode else: final = gcode if IP_ADDR is not None: sendToSmoothie(IP_ADDR, final, filename) else: if not filename == '-': gfile = pythonopen(filename, "w") gfile.write(final) gfile.close() FreeCAD.Console.PrintMessage("done postprocessing.\n") return final def sendToSmoothie(ip, GCODE, fname): import sys import socket import os fname = os.path.basename(fname) FreeCAD.Console.PrintMessage('sending to smoothie: {}\n'.format(fname)) f = GCODE.rstrip() filesize = len(f) # make connection to sftp server s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(4.0) s.connect((ip, 115)) tn = s.makefile(mode='rw') # read startup prompt ln = tn.readline() if not ln.startswith("+"): FreeCAD.Console.PrintMessage("Failed to connect with sftp: {}\n".format(ln)) sys.exit() if VERBOSE: print("RSP: " + ln.strip()) # Issue initial store command tn.write("STOR OLD /sd/" + fname + "\n") tn.flush() ln = tn.readline() if not ln.startswith("+"): FreeCAD.Console.PrintError("Failed to create file: {}\n".format(ln)) sys.exit() if VERBOSE: print("RSP: " + ln.strip()) # send size of file tn.write("SIZE " + str(filesize) + "\n") tn.flush() ln = tn.readline() if not ln.startswith("+"): FreeCAD.Console.PrintError("Failed: {}\n".format(ln)) sys.exit() if VERBOSE: print("RSP: " + ln.strip()) cnt = 0 # now send file for line in f.splitlines(1): tn.write(line) if VERBOSE: cnt += len(line) print("SND: " + line.strip()) print(str(cnt) + "/" + str(filesize) + "\r", end='') tn.flush() ln = tn.readline() if not ln.startswith("+"): FreeCAD.Console.PrintError("Failed to save file: {}\n".format(ln)) sys.exit() if VERBOSE: print("RSP: " + ln.strip()) # exit tn.write("DONE\n") tn.flush() tn.close() FreeCAD.Console.PrintMessage("Upload complete\n") def linenumber(): global LINENR # pylint: disable=global-statement if OUTPUT_LINE_NUMBERS is True: LINENR += 10 return "N" + str(LINENR) + " " return "" def parse(pathobj): global SPINDLE_SPEED # pylint: disable=global-statement out = "" lastcommand = None precision_string = '.' + str(PRECISION) + 'f' # params = ['X','Y','Z','A','B','I','J','K','F','S'] #This list control # the order of parameters # linuxcnc doesn't want K properties on XY plane Arcs need work. params = ['X', 'Y', 'Z', 'A', 'B', 'I', 'J', 'F', 'S', 'T', 'Q', 'R', 'L'] if hasattr(pathobj, "Group"): # We have a compound or project. # if OUTPUT_COMMENTS: # out += linenumber() + "(compound: " + pathobj.Label + ")\n" for p in pathobj.Group: out += parse(p) return out else: # parsing simple path # groups might contain non-path things like stock. if not hasattr(pathobj, "Path"): return out # if OUTPUT_COMMENTS: # out += linenumber() + "(" + pathobj.Label + ")\n" for c in pathobj.Path.Commands: outstring = [] command = c.Name outstring.append(command) # if modal: only print the command if it is not the same as the # last one if MODAL is True: if command == lastcommand: outstring.pop(0) # Now add the remaining parameters in order for param in params: if param in c.Parameters: if param == 'F': if c.Name not in ["G0", "G00"]: # linuxcnc doesn't use rapid speeds speed = Units.Quantity(c.Parameters['F'], FreeCAD.Units.Velocity) outstring.append( param + format(float(speed.getValueAs(UNIT_SPEED_FORMAT)), precision_string)) elif param == 'T': outstring.append(param + str(c.Parameters['T'])) elif param == 'S': outstring.append(param + str(c.Parameters['S'])) SPINDLE_SPEED = c.Parameters['S'] else: pos = Units.Quantity(c.Parameters[param], FreeCAD.Units.Length) outstring.append( param + format(float(pos.getValueAs(UNIT_FORMAT)), precision_string)) if command in ['G1', 'G01', 'G2', 'G02', 'G3', 'G03']: outstring.append('S' + str(SPINDLE_SPEED)) # store the latest command lastcommand = command # Check for Tool Change: if command == 'M6': # if OUTPUT_COMMENTS: # out += linenumber() + "(begin toolchange)\n" for line in TOOL_CHANGE.splitlines(True): out += linenumber() + line if command == "message": if OUTPUT_COMMENTS is False: out = [] else: outstring.pop(0) # remove the command # prepend a line number and append a newline if len(outstring) >= 1: if OUTPUT_LINE_NUMBERS: outstring.insert(0, (linenumber())) # append the line to the final output for w in outstring: out += w + COMMAND_SPACE out = out.strip() + "\n" return out print(__name__ + " gcode postprocessor loaded.")