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._commandList = []
  26                 self._blockIndex = None
  27                 self._lineCount = 0
  28                 self._progressLine = 0
  29                 self._hotendTemperature = [None] * 4
  30                 self._bedTemperature = None
  31
  32                 self.checkThread = threading.Thread(target=self._doodle3DThread)
  33                 self.checkThread.daemon = True
  34                 self.checkThread.start()
  35
  36         #Load the file into memory for printing.
  37         def loadFile(self, filename):
  38                 if self._printing:
  39                         return False
  40                 self._fileBlocks = []
  41                 self._lineCount = 0
  42                 block = []
  43                 blockSize = 0
  44                 f = open(filename, "r")
  45                 for line in f:
  46                         #Strip out comments, we do not need to send comments
  47                         if ';' in line:
  48                                 line = line[:line.index(';')]
  49                         #Strip out whitespace at the beginning/end this saves data to send.
  50                         line = line.strip()
  51
  52                         if len(line) < 1:
  53                                 continue
  54                         self._lineCount += 1
  55                         #Put the lines in 2k sized blocks, so we can send those blocks as http requests.
  56                         if blockSize + len(line) > 2048:
  57                                 self._fileBlocks.append('\n'.join(block) + '\n')
  58                                 block = []
  59                                 blockSize = 0
  60                         blockSize += len(line) + 1
  61                         block.append(line)
  62                 self._fileBlocks.append('\n'.join(block) + '\n')
  63                 f.close()
  64                 self._doCallback()
  65                 return True
  66
  67         #Start printing the previously loaded file
  68         def startPrint(self):
  69                 if self._printing or len(self._fileBlocks) < 1:
  70                         return
  71                 self._progressLine = 0
  72                 self._blockIndex = 0
  73                 self._printing = True
  74
  75         #Abort the previously loaded print file
  76         def cancelPrint(self):
  77                 if not self._printing:
  78                         return
  79                 if self._request('POST', '/d3dapi/printer/stop', {'gcode': 'M104 S0\nG28'}):
  80                         self._printing = False
  81
  82         def isPrinting(self):
  83                 return self._printing
  84
  85         #Amount of progression of the current print file. 0.0 to 1.0
  86         def getPrintProgress(self):
  87                 if self._lineCount < 1:
  88                         return 0.0
  89                 return float(self._progressLine) / float(self._lineCount)
  90
  91         # Return if the printer with this connection type is available
  92         def isAvailable(self):
  93                 return self._isAvailable
  94
  95         #Are we able to send a direct coammand with sendCommand at this moment in time.
  96         def isAbleToSendDirectCommand(self):
  97                 return self._isAvailable and not self._printing
  98
  99         #Directly send a command to the printer.
 100         def sendCommand(self, command):
 101                 if not self._isAvailable or self._printing:
 102                         return
 103                 self._commandList.append(command)
 104
 105         # Get the connection status string. This is displayed to the user and can be used to communicate
 106         #  various information to the user.
 107         def getStatusString(self):
 108                 if not self._isAvailable:
 109                         return "Doodle3D box not found"
 110                 if self._printing:
 111                         if self._blockIndex < len(self._fileBlocks):
 112                                 return "Sending GCode: %.1f%%" % (float(self._blockIndex) * 100.0 / float(len(self._fileBlocks)))
 113                         return "Print progress: %.1f%%" % (self.getPrintProgress() * 100.0)
 114                 return "Printing found, waiting for print."
 115
 116         #Get the temperature of an extruder, returns None is no temperature is known for this extruder
 117         def getTemperature(self, extruder):
 118                 return self._hotendTemperature[extruder]
 119
 120         #Get the temperature of the heated bed, returns None is no temperature is known for the heated bed
 121         def getBedTemperature(self):
 122                 return self._bedTemperature
 123
 124         def _doodle3DThread(self):
 125                 waitDelay = 0
 126                 while True:
 127                         while self._host is None:
 128                                 printerList = self._request('GET', self.PRINTER_LIST_PATH, host=self.PRINTER_LIST_HOST)
 129                                 if not printerList or type(printerList) is not dict or 'data' not in printerList or type(printerList['data']) is not list:
 130                                         #Check if we are connected to the Doodle3D box in access point mode, as this gives an
 131                                         # invalid reply on the printer list API
 132                                         printerList = {'data': [{'localip': 'draw.doodle3d.com'}]}
 133
 134                                 #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.
 135                                 # (connect.doodle3d.com also checks for this IP in the javascript code)
 136                                 printerList['data'].append({'localip': '192.168.5.1'})
 137
 138                                 #Check the status of each possible IP, if we find a valid box with a printer connected. Use that IP.
 139                                 for possiblePrinter in printerList['data']:
 140                                         status = self._request('GET', '/d3dapi/info/status', host=possiblePrinter['localip'])
 141                                         if status and 'data' in status:
 142                                                 self._host = possiblePrinter['localip']
 143                                                 break
 144
 145                                 if self._host is None:
 146                                         #If we cannot find a doodle3d box, delay a minute and request the list again.
 147                                         # This so we do not stress the connect.doodle3d.com api too much
 148                                         if waitDelay < 10:
 149                                                 waitDelay += 1
 150                                         time.sleep(waitDelay * 60)
 151                                 else:
 152                                         #If we found a doodle3D box, reset the wait delay, so we can find it again in case it gets lost
 153                                         waitDelay = 0
 154
 155                         stateReply = self._request('GET', '/d3dapi/info/status')
 156                         if stateReply is None or not stateReply:
 157                                 # No API, wait 5 seconds before looking for Doodle3D again.
 158                                 # API gave back an error (this can happen if the Doodle3D box is connecting to the printer)
 159                                 self._host = None
 160                                 if self._isAvailable:
 161                                         self._isAvailable = False
 162                                         self._doCallback()
 163                                 time.sleep(5)
 164                                 continue
 165                         if stateReply['data']['state'] == 'disconnected':
 166                                 # No printer connected
 167                                 if self._isAvailable:
 168                                         self._isAvailable = False
 169                                         self._doCallback()
 170                                 time.sleep(5)
 171                                 continue
 172
 173                         #We got a valid status, set the doodle3d printer as available.
 174                         if not self._isAvailable:
 175                                 self._isAvailable = True
 176
 177                         if 'hotend' in stateReply['data']:
 178                                 self._hotendTemperature[0] = stateReply['data']['hotend']
 179                         if 'bed' in stateReply['data']:
 180                                 self._bedTemperature = stateReply['data']['bed']
 181
 182                         if stateReply['data']['state'] == 'idle' or stateReply['data']['state'] == 'buffering':
 183                                 if self._printing:
 184                                         if self._blockIndex < len(self._fileBlocks):
 185                                                 if self._request('POST', '/d3dapi/printer/print', {'gcode': self._fileBlocks[self._blockIndex], 'start': 'True', 'first': 'True'}):
 186                                                         self._blockIndex += 1
 187                                                 else:
 188                                                         time.sleep(1)
 189                                         else:
 190                                                 self._printing = False
 191                                 else:
 192                                         if len(self._commandList) > 0:
 193                                                 if self._request('POST', '/d3dapi/printer/print', {'gcode': self._commandList[0], 'start': 'True', 'first': 'True'}):
 194                                                         self._commandList.pop(0)
 195                                                 else:
 196                                                         time.sleep(1)
 197                                         else:
 198                                                 time.sleep(5)
 199                         elif stateReply['data']['state'] == 'printing':
 200                                 if self._printing:
 201                                         if self._blockIndex < len(self._fileBlocks):
 202                                                 for n in xrange(0, 5):
 203                                                         if self._blockIndex < len(self._fileBlocks):
 204                                                                 if self._request('POST', '/d3dapi/printer/print', {'gcode': self._fileBlocks[self._blockIndex]}):
 205                                                                         self._blockIndex += 1
 206                                                                 else:
 207                                                                         time.sleep(1)
 208                                         else:
 209                                                 #If we are no longer sending new GCode delay a bit so we request the status less often.
 210                                                 time.sleep(1)
 211                                         if 'current_line' in stateReply['data']:
 212                                                 self._progressLine = stateReply['data']['current_line']
 213                                 else:
 214                                         #Got a printing state without us having send the print file, set the state to printing, but make sure we never send anything.
 215                                         if 'current_line' in stateReply['data'] and 'total_lines' in stateReply['data'] and stateReply['data']['total_lines'] > 2:
 216                                                 self._printing = True
 217                                                 self._blockIndex = len(self._fileBlocks)
 218                                                 self._progressLine = stateReply['data']['current_line']
 219                                                 self._lineCount = stateReply['data']['total_lines']
 220                                         time.sleep(1)
 221                         self._doCallback()
 222
 223         def _request(self, method, path, postData = None, host = None):
 224                 if host is None:
 225                         host = self._host
 226                 if self._http is None or self._http.host != host:
 227                         self._http = httpclient.HTTPConnection(host)
 228
 229                 try:
 230                         if postData is not None:
 231                                 self._http.request(method, path, urllib.urlencode(postData), {"Content-type": "application/x-www-form-urlencoded", "User-Agent": "Cura Doodle3D connection"})
 232                         else:
 233                                 self._http.request(method, path, headers={"Content-type": "application/x-www-form-urlencoded", "User-Agent": "Cura Doodle3D connection"})
 234                 except:
 235                         self._http.close()
 236                         return None
 237                 try:
 238                         response = self._http.getresponse()
 239                         responseText = response.read()
 240                 except:
 241                         self._http.close()
 242                         return None
 243                 try:
 244                         response = json.loads(responseText)
 245                 except ValueError:
 246                         self._http.close()
 247                         return None
 248                 if response['status'] != 'success':
 249                         return False
 250
 251                 return response
 252
 253 if __name__ == '__main__':
 254         d = doodle3dConnect()
 255         print 'Searching for Doodle3D box'
 256         while not d.isAvailable():
 257                 time.sleep(1)
 258
 259         while d.isPrinting():
 260                 print 'Doodle3D already printing! Requesting stop!'
 261                 d.cancelPrint()
 262                 time.sleep(5)
 263
 264         print 'Doodle3D box found, printing!'
 265         d.loadFile("C:/Models/belt-tensioner-wave_export.gcode")
 266         d.startPrint()
 267         while d.isPrinting() and d.isAvailable():
 268                 time.sleep(1)
 269                 print d.getTemperature(0), d.getStatusString(), d.getPrintProgress(), d._progressLine, d._lineCount, d._blockIndex, len(d._fileBlocks)
 270         print 'Done'