Cura/util/printerConnection/doodle3dConnect.py

   1 __copyright__ = "Copyright (C) 2013 David Braam - Released under terms of the AGPLv3 License"
   2
   3 import threading
   4 import json
   5 import httplib as httpclient
   6 import urllib
   7 import time
   8
   9 from Cura.util.printerConnection import printerConnectionBase
  10
  11 #Class to connect and print files with the doodle3d.com wifi box
  12 # Auto-detects if the Doodle3D box is available with a printer
  13 class doodle3dConnect(printerConnectionBase.printerConnectionBase):
  14         PRINTER_LIST_HOST = 'connect.doodle3d.com'
  15         PRINTER_LIST_PATH = '/api/list.php'
  16
  17         def __init__(self):
  18                 super(doodle3dConnect, self).__init__()
  19
  20                 self._http = None
  21                 self._host = None
  22                 self._isAvailable = False
  23                 self._printing = False
  24                 self._fileBlocks = []
  25                 self._blockIndex = None
  26                 self._lineCount = 0
  27                 self._progressLine = 0
  28                 self._hotendTemperature = [None] * 4
  29                 self._bedTemperature = None
  30
  31                 self.checkThread = threading.Thread(target=self._doodle3DThread)
  32                 self.checkThread.daemon = True
  33                 self.checkThread.start()
  34
  35         #Load the file into memory for printing.
  36         def loadFile(self, filename):
  37                 if self._printing:
  38                         return False
  39                 self._fileBlocks = []
  40                 self._lineCount = 0
  41                 block = []
  42                 blockSize = 0
  43                 f = open(filename, "r")
  44                 for line in f:
  45                         #Strip out comments, we do not need to send comments
  46                         if ';' in line:
  47                                 line = line[:line.index(';')]
  48                         #Strip out whitespace at the beginning/end this saves data to send.
  49                         line = line.strip()
  50
  51                         if len(line) < 1:
  52                                 continue
  53                         self._lineCount += 1
  54                         #Put the lines in 2k sized blocks, so we can send those blocks as http requests.
  55                         if blockSize + len(line) > 2048:
  56                                 self._fileBlocks.append('\n'.join(block) + '\n')
  57                                 block = []
  58                                 blockSize = 0
  59                         blockSize += len(line) + 1
  60                         block.append(line)
  61                 self._fileBlocks.append('\n'.join(block) + '\n')
  62                 f.close()
  63                 self._doCallback()
  64                 return True
  65
  66         #Start printing the previously loaded file
  67         def startPrint(self):
  68                 if self._printing or len(self._fileBlocks) < 1:
  69                         return
  70                 self._progressLine = 0
  71                 self._blockIndex = 0
  72                 self._printing = True
  73
  74         #Abort the previously loaded print file
  75         def cancelPrint(self):
  76                 if not self._printing:
  77                         return
  78                 if self._request('POST', '/d3dapi/printer/stop', {'gcode': 'M104 S0\nG28'}):
  79                         self._printing = False
  80
  81         def isPrinting(self):
  82                 return self._printing
  83
  84         #Amount of progression of the current print file. 0.0 to 1.0
  85         def getPrintProgress(self):
  86                 if self._lineCount < 1:
  87                         return 0.0
  88                 return float(self._progressLine) / float(self._lineCount)
  89
  90         # Return if the printer with this connection type is available
  91         def isAvailable(self):
  92                 return self._isAvailable
  93
  94         # Get the connection status string. This is displayed to the user and can be used to communicate
  95         #  various information to the user.
  96         def getStatusString(self):
  97                 if not self._isAvailable:
  98                         return "Doodle3D box not found"
  99                 if self._printing:
 100                         if self._fileIndex < len(self._fileBlocks):
 101                                 return "Sending GCode: %.1f" % (float(self._fileIndex) / float(len(self._fileBlocks)))
 102                 return "TODO"
 103
 104         #Get the temperature of an extruder, returns None is no temperature is known for this extruder
 105         def getTemperature(self, extruder):
 106                 return self._hotendTemperature[extruder]
 107
 108         #Get the temperature of the heated bed, returns None is no temperature is known for the heated bed
 109         def getBedTemperature(self):
 110                 return self._bedTemperature
 111
 112         def _doodle3DThread(self):
 113                 while True:
 114                         while self._host is None:
 115                                 printerList = self._request('GET', self.PRINTER_LIST_PATH, host=self.PRINTER_LIST_HOST)
 116                                 if not printerList or type(printerList) is not dict or 'data' not in printerList or type(printerList['data']) is not list:
 117                                         #Check if we are connected to the Doodle3D box in access point mode, as this gives an
 118                                         # invalid reply on the printer list API
 119                                         printerList = {'data': [{'localip': 'draw.doodle3d.com'}]}
 120
 121                                 #Add the 192.168.5.1 IP to the list of printers to check, as this is the LAN port IP, which could also be available.
 122                                 # (connect.doodle3d.com also checks for this IP in the javascript code)
 123                                 printerList['data'].append({'localip': '192.168.5.1'})
 124
 125                                 #Check the status of each possible IP, if we find a valid box with a printer connected. Use that IP.
 126                                 for possiblePrinter in printerList['data']:
 127                                         status = self._request('GET', '/d3dapi/info/status', host=possiblePrinter['localip'])
 128                                         if status and 'data' in status and (status['data']['state'] == 'idle' or status['data']['state'] == 'buffering'):
 129                                                 self._host = possiblePrinter['localip']
 130                                                 break
 131
 132                                 if self._host is None:
 133                                         #If we cannot find a doodle3d box, delay a minute and request the list again.
 134                                         # This so we do not stress the connect.doodle3d.com api too much
 135                                         time.sleep(60)
 136
 137                         stateReply = self._request('GET', '/d3dapi/info/status')
 138                         if stateReply is None or not stateReply or stateReply['data']['state'] == 'disconnected':
 139                                 # No API, wait 5 seconds before looking for Doodle3D again.
 140                                 # API gave back an error (this can happen if the Doodle3D box is connecting to the printer)
 141                                 # Or no printer connected
 142                                 self._host = None
 143                                 self._isAvailable = False
 144                                 self._doCallback()
 145                                 time.sleep(5)
 146                                 continue
 147
 148                         #We got a valid status, set the doodle3d printer as available.
 149                         if not self._isAvailable:
 150                                 self._isAvailable = True
 151
 152                         if 'hotend' in stateReply['data']:
 153                                 self._hotendTemperature[0] = stateReply['data']['hotend']
 154                         if 'bed' in stateReply['data']:
 155                                 self._bedTemperature = stateReply['data']['bed']
 156
 157                         if stateReply['data']['state'] == 'idle' or stateReply['data']['state'] == 'buffering':
 158                                 if self._printing:
 159                                         if self._blockIndex < len(self._fileBlocks):
 160                                                 if self._request('POST', '/d3dapi/printer/print', {'gcode': self._fileBlocks[self._blockIndex], 'start': 'True', 'first': 'True'}):
 161                                                         self._blockIndex += 1
 162                                                 else:
 163                                                         time.sleep(1)
 164                                         else:
 165                                                 self._printing = False
 166                                 else:
 167                                         time.sleep(5)
 168                         elif stateReply['data']['state'] == 'printing':
 169                                 if self._printing:
 170                                         if self._blockIndex < len(self._fileBlocks):
 171                                                 for n in xrange(0, 5):
 172                                                         if self._blockIndex < len(self._fileBlocks):
 173                                                                 if self._request('POST', '/d3dapi/printer/print', {'gcode': self._fileBlocks[self._blockIndex]}):
 174                                                                         self._blockIndex += 1
 175                                                                 else:
 176                                                                         time.sleep(1)
 177                                         else:
 178                                                 #If we are no longer sending new GCode delay a bit so we request the status less often.
 179                                                 time.sleep(1)
 180                                         if 'current_line' in stateReply['data']:
 181                                                 self._progressLine = stateReply['data']['current_line']
 182                                 else:
 183                                         #Got a printing state without us having send the print file, set the state to printing, but make sure we never send anything.
 184                                         if 'current_line' in stateReply['data'] and 'total_lines' in stateReply['data']:
 185                                                 self._printing = True
 186                                                 self._blockIndex = len(self._fileBlocks)
 187                                                 self._progressLine = stateReply['data']['current_line']
 188                                                 self._lineCount = stateReply['data']['total_lines']
 189                                         time.sleep(1)
 190                         self._doCallback()
 191
 192         def _request(self, method, path, postData = None, host = None):
 193                 if host is None:
 194                         host = self._host
 195                 if self._http is None or self._http.host != host:
 196                         self._http = httpclient.HTTPConnection(host)
 197
 198                 try:
 199                         if postData is not None:
 200                                 self._http.request(method, path, urllib.urlencode(postData), {"Content-type": "application/x-www-form-urlencoded", "User-Agent": "Cura Doodle3D connection"})
 201                         else:
 202                                 self._http.request(method, path, headers={"Content-type": "application/x-www-form-urlencoded", "User-Agent": "Cura Doodle3D connection"})
 203                 except:
 204                         self._http.close()
 205                         return None
 206                 try:
 207                         response = self._http.getresponse()
 208                         responseText = response.read()
 209                 except:
 210                         self._http.close()
 211                         return None
 212                 try:
 213                         response = json.loads(responseText)
 214                 except ValueError:
 215                         self._http.close()
 216                         return None
 217                 if response['status'] != 'success':
 218                         return False
 219
 220                 return response
 221
 222 if __name__ == '__main__':
 223         d = doodle3dConnect()
 224         print 'Searching for Doodle3D box'
 225         while not d.isAvailable():
 226                 time.sleep(1)
 227
 228         while d.isPrinting():
 229                 print 'Doodle3D already printing! Requesting stop!'
 230                 d.cancelPrint()
 231                 time.sleep(5)
 232
 233         print 'Doodle3D box found, printing!'
 234         d.loadFile("C:/Models/belt-tensioner-wave_export.gcode")
 235         d.startPrint()
 236         while d.isPrinting() and d.isAvailable():
 237                 time.sleep(1)
 238                 print d.getTemperature(0), d.getStatusString(), d.getPrintProgress(), d._progressLine, d._lineCount, d._blockIndex, len(d._fileBlocks)
 239         print 'Done'