lib/python/Plugins/SystemPlugins/PositionerSetup/plugin.py

   1 from enigma import eTimer, eDVBSatelliteEquipmentControl, eDVBResourceManager, eDVBDiseqcCommand, eDVBResourceManagerPtr, iDVBChannelPtr, iDVBFrontendPtr, iDVBFrontend, eDVBFrontendParametersSatellite, eDVBFrontendParameters
   2 from Screens.Screen import Screen
   3 from Screens.ScanSetup import ScanSetup
   4 from Screens.MessageBox import MessageBox
   5 from Plugins.Plugin import PluginDescriptor
   6
   7 from Components.Label import Label
   8 from Components.ConfigList import ConfigList
   9 from Components.TunerInfo import TunerInfo
  10 from Components.ActionMap import ActionMap
  11 from Components.NimManager import nimmanager
  12 from Components.MenuList import MenuList
  13 from Components.config import ConfigSatlist, ConfigNothing, ConfigSelection, ConfigSubsection, KEY_LEFT, KEY_RIGHT, getConfigListEntry
  14
  15 from time import sleep
  16
  17 class PositionerSetup(Screen):
  18         skin = """
  19                 <screen position="100,100" size="560,400" title="Positioner setup..." >
  20                         <widget name="list" position="100,0" size="350,155" />
  21
  22                         <widget name="red" position="0,155" size="140,80" backgroundColor="red" halign="center" valign="center" font="Regular;21" />
  23                         <widget name="green" position="140,155" size="140,80" backgroundColor="green" halign="center" valign="center" font="Regular;21" />
  24                         <widget name="yellow" position="280,155" size="140,80" backgroundColor="yellow" halign="center" valign="center" font="Regular;21" />
  25                         <widget name="blue" position="420,155" size="140,80" backgroundColor="blue" halign="center" valign="center" font="Regular;21" />
  26
  27                         <widget name="snr" text="SNR:" position="0,245" size="60,22" font="Regular;21" />
  28                         <widget name="agc" text="AGC:" position="0,270" size="60,22" font="Regular;21" />
  29                         <widget name="ber" text="BER:" position="0,295" size="60,22" font="Regular;21" />
  30                         <widget name="lock" text="Lock:" position="0,320" size="60,22" font="Regular;21" />
  31                         <widget name="snr_percentage" position="220,245" size="60,22" font="Regular;21" />
  32                         <widget name="agc_percentage" position="220,270" size="60,22" font="Regular;21" />
  33                         <widget name="ber_value" position="220,295" size="60,22" font="Regular;21" />
  34                         <widget name="lock_state" position="60,320" size="150,22" font="Regular;21" />
  35                         <widget name="snr_bar" position="60,245" size="150,22" />
  36                         <widget name="agc_bar" position="60,270" size="150,22" />
  37                         <widget name="ber_bar" position="60,295" size="150,22" />
  38
  39                         <widget name="frequency" text="Frequency:" position="300,245" size="120,22" font="Regular;21" />
  40                         <widget name="symbolrate" text="Symbolrate:" position="300,270" size="120,22" font="Regular;21" />
  41                         <widget name="fec" text="FEC:" position="300,295" size="120,22" font="Regular;21" />
  42                         <widget name="frequency_value" position="420,245" size="120,22" font="Regular;21" />
  43                         <widget name="symbolrate_value" position="420,270" size="120,22" font="Regular;21" />
  44                         <widget name="fec_value" position="420,295" size="120,22" font="Regular;21" />
  45                 </screen>"""
  46         def __init__(self, session, feid):
  47                 self.skin = PositionerSetup.skin
  48                 Screen.__init__(self, session)
  49                 self.feid = feid
  50                 self.oldref = None
  51
  52                 if not self.openFrontend():
  53                         self.oldref = session.nav.getCurrentlyPlayingServiceReference()
  54                         session.nav.stopService() # try to disable foreground service
  55                         if not self.openFrontend():
  56                                 if session.pipshown: # try to disable pip
  57                                         session.pipshown = False
  58                                         del session.pip
  59                                         if not self.openFrontend():
  60                                                 self.frontend = None # in normal case this should not happen
  61                                                 self.getFrontend = None
  62
  63                 self.diseqc = Diseqc(self.frontend)
  64                 self.tuner = Tuner(self.frontend)
  65                 self.tuner.tune((0,0,0,0,0,0))
  66
  67                 self.createConfig()
  68
  69                 self.isMoving = False
  70                 self.stopOnLock = False
  71
  72                 self.red = Label("")
  73                 self["red"] = self.red
  74                 self.green = Label("")
  75                 self["green"] = self.green
  76                 self.yellow = Label("")
  77                 self["yellow"] = self.yellow
  78                 self.blue = Label("")
  79                 self["blue"] = self.blue
  80
  81                 self.list = []
  82                 self["list"] = ConfigList(self.list)
  83                 self.createSetup()
  84
  85                 self["snr"] = Label()
  86                 self["agc"] = Label()
  87                 self["ber"] = Label()
  88                 self["lock"] = Label()
  89                 self["snr_percentage"] = TunerInfo(TunerInfo.SNR_PERCENTAGE, frontendfkt = self.getFrontend)
  90                 self["agc_percentage"] = TunerInfo(TunerInfo.AGC_PERCENTAGE, frontendfkt = self.getFrontend)
  91                 self["ber_value"] = TunerInfo(TunerInfo.BER_VALUE, frontendfkt = self.getFrontend)
  92                 self["snr_bar"] = TunerInfo(TunerInfo.SNR_BAR, frontendfkt = self.getFrontend)
  93                 self["agc_bar"] = TunerInfo(TunerInfo.AGC_BAR, frontendfkt = self.getFrontend)
  94                 self["ber_bar"] = TunerInfo(TunerInfo.BER_BAR, frontendfkt = self.getFrontend)
  95                 self["lock_state"] = TunerInfo(TunerInfo.LOCK_STATE, frontendfkt = self.getFrontend)
  96
  97                 self["frequency"] = Label()
  98                 self["symbolrate"] = Label()
  99                 self["fec"] = Label()
 100
 101                 self["frequency_value"] = Label("")
 102                 self["symbolrate_value"] = Label("")
 103                 self["fec_value"] = Label("")
 104
 105                 self["actions"] = ActionMap(["DirectionActions", "OkCancelActions", "ColorActions"],
 106                 {
 107                         "ok": self.go,
 108                         "cancel": self.keyCancel,
 109                         "up": self.up,
 110                         "down": self.down,
 111                         "left": self.left,
 112                         "right": self.right,
 113                         "red": self.redKey,
 114                         "green": self.greenKey,
 115                         "yellow": self.yellowKey,
 116                         "blue": self.blueKey,
 117                 }, -1)
 118
 119                 self.updateColors("tune")
 120
 121                 self.statusTimer = eTimer()
 122                 self.statusTimer.timeout.get().append(self.updateStatus)
 123                 self.statusTimer.start(50, False)
 124
 125         def restartPrevService(self, yesno):
 126                 if yesno:
 127                         if self.frontend:
 128                                 self.frontend = None
 129                                 del self.raw_channel
 130                         self.session.nav.playService(self.oldref)
 131                 self.close(None)
 132
 133         def keyCancel(self):
 134                 if self.oldref:
 135                         self.session.openWithCallback(self.restartPrevService, MessageBox, _("Zap back to service before positioner setup?"), MessageBox.TYPE_YESNO)
 136                 else:
 137                         self.restartPrevService(False)
 138
 139         def getFrontend(self):
 140                 return self.frontend
 141
 142         def openFrontend(self):
 143                 res_mgr = eDVBResourceManagerPtr()
 144                 if eDVBResourceManager.getInstance(res_mgr) == 0:
 145                         self.raw_channel = iDVBChannelPtr()
 146                         if res_mgr.allocateRawChannel(self.raw_channel, self.feid) == 0:
 147                                 self.frontend = iDVBFrontendPtr()
 148                                 if self.raw_channel.getFrontend(self.frontend) == 0:
 149                                         return True
 150                                 else:
 151                                         print "getFrontend failed"
 152                         else:
 153                                 print "getRawChannel failed"
 154                 else:
 155                         print "getResourceManager instance failed"
 156                 return False
 157
 158         def createConfig(self):
 159                 self.positioner_tune = ConfigNothing()
 160                 self.positioner_move = ConfigNothing()
 161                 self.positioner_finemove = ConfigNothing()
 162                 self.positioner_limits = ConfigNothing()
 163                 self.positioner_goto0 = ConfigNothing()
 164                 storepos = []
 165                 for x in range(1,255):
 166                         storepos.append(str(x))
 167                 self.positioner_storage = ConfigSelection(choices = storepos)
 168
 169         def createSetup(self):
 170                 self.list.append((_("Tune"), self.positioner_tune, "tune"))
 171                 self.list.append((_("Positioner movement"), self.positioner_move, "move"))
 172                 self.list.append((_("Positioner fine movement"), self.positioner_finemove, "finemove"))
 173                 self.list.append((_("Set limits"), self.positioner_limits, "limits"))
 174                 self.list.append((_("Positioner storage"), self.positioner_storage, "storage"))
 175                 self.list.append((_("Goto 0"), self.positioner_goto0, "goto0"))
 176                 self["list"].l.setList(self.list)
 177
 178         def go(self):
 179                 pass
 180
 181         def getCurrentConfigPath(self):
 182                 return self["list"].getCurrent()[2]
 183
 184         def up(self):
 185                 if not self.isMoving:
 186                         self["list"].instance.moveSelection(self["list"].instance.moveUp)
 187                         self.updateColors(self.getCurrentConfigPath())
 188
 189         def down(self):
 190                 if not self.isMoving:
 191                         self["list"].instance.moveSelection(self["list"].instance.moveDown)
 192                         self.updateColors(self.getCurrentConfigPath())
 193
 194         def left(self):
 195                 self["list"].handleKey(KEY_LEFT)
 196
 197         def right(self):
 198                 self["list"].handleKey(KEY_RIGHT)
 199
 200         def updateColors(self, entry):
 201                 if entry == "tune":
 202                         self.red.setText(_("Tune"))
 203                         self.green.setText("")
 204                         self.yellow.setText("")
 205                         self.blue.setText("")
 206                 elif entry == "move":
 207                         if self.isMoving:
 208                                 self.red.setText(_("Stop"))
 209                                 self.green.setText(_("Stop"))
 210                                 self.yellow.setText(_("Stop"))
 211                                 self.blue.setText(_("Stop"))
 212                         else:
 213                                 self.red.setText(_("Move west"))
 214                                 self.green.setText(_("Search west"))
 215                                 self.yellow.setText(_("Search east"))
 216                                 self.blue.setText(_("Move east"))
 217                 elif entry == "finemove":
 218                         self.red.setText("")
 219                         self.green.setText(_("Step west"))
 220                         self.yellow.setText(_("Step east"))
 221                         self.blue.setText("")
 222                 elif entry == "limits":
 223                         self.red.setText(_("Limits off"))
 224                         self.green.setText(_("Limit west"))
 225                         self.yellow.setText(_("Limit east"))
 226                         self.blue.setText(_("Limits on"))
 227                 elif entry == "storage":
 228                         self.red.setText("")
 229                         self.green.setText(_("Store position"))
 230                         self.yellow.setText(_("Goto position"))
 231                         self.blue.setText("")
 232                 elif entry == "goto0":
 233                         self.red.setText(_("Goto 0"))
 234                         self.green.setText("")
 235                         self.yellow.setText("")
 236                         self.blue.setText("")
 237                 else:
 238                         self.red.setText("")
 239                         self.green.setText("")
 240                         self.yellow.setText("")
 241                         self.blue.setText("")
 242
 243         def redKey(self):
 244                 entry = self.getCurrentConfigPath()
 245                 if entry == "move":
 246                         if self.isMoving:
 247                                 self.diseqccommand("stop")
 248                                 self.isMoving = False
 249                                 self.stopOnLock = False
 250                         else:
 251                                 self.diseqccommand("moveWest", 0)
 252                                 self.isMoving = True
 253                         self.updateColors("move")
 254                 elif entry == "limits":
 255                         self.diseqccommand("limitOff")
 256                 elif entry == "tune":
 257                         self.session.openWithCallback(self.tune, TunerScreen, self.feid)
 258                 elif entry == "goto0":
 259                         print "move to position 0"
 260                         self.diseqccommand("moveTo", 0)
 261
 262         def greenKey(self):
 263                 entry = self.getCurrentConfigPath()
 264                 if entry == "move":
 265                         if self.isMoving:
 266                                 self.diseqccommand("stop")
 267                                 self.isMoving = False
 268                                 self.stopOnLock = False
 269                         else:
 270                                 self.isMoving = True
 271                                 self.stopOnLock = True
 272                                 self.diseqccommand("moveWest", 0)
 273                         self.updateColors("move")
 274                 elif entry == "finemove":
 275                         print "stepping west"
 276                         self.diseqccommand("moveWest", 0xFF) # one step
 277                 elif entry == "storage":
 278                         print "store at position", int(self.positioner_storage.value)
 279                         self.diseqccommand("store", int(self.positioner_storage.value))
 280                 elif entry == "limits":
 281                         self.diseqccommand("limitWest")
 282
 283         def yellowKey(self):
 284                 entry = self.getCurrentConfigPath()
 285                 if entry == "move":
 286                         if self.isMoving:
 287                                 self.diseqccommand("stop")
 288                                 self.isMoving = False
 289                                 self.stopOnLock = False
 290                         else:
 291                                 self.isMoving = True
 292                                 self.stopOnLock = True
 293                                 self.diseqccommand("moveEast", 0)
 294                         self.updateColors("move")
 295                 elif entry == "finemove":
 296                         print "stepping east"
 297                         self.diseqccommand("moveEast", 0xFF) # one step
 298                 elif entry == "storage":
 299                         print "move to position", int(self.positioner_storage.value)
 300                         self.diseqccommand("moveTo", int(self.positioner_storage.value))
 301                 elif entry == "limits":
 302                         self.diseqccommand("limitEast")
 303
 304         def blueKey(self):
 305                 entry = self.getCurrentConfigPath()
 306                 if entry == "move":
 307                         if self.isMoving:
 308                                 self.diseqccommand("stop")
 309                                 self.isMoving = False
 310                                 self.stopOnLock = False
 311                         else:
 312                                 self.diseqccommand("moveEast", 0)
 313                                 self.isMoving = True
 314                         self.updateColors("move")
 315                         print "moving east"
 316                 elif entry == "limits":
 317                         self.diseqccommand("limitOn")
 318
 319         def diseqccommand(self, cmd, param = 0):
 320                 self.diseqc.command(cmd, param)
 321                 self.tuner.retune()
 322
 323         def updateStatus(self):
 324                 self["snr_percentage"].update()
 325                 self["agc_percentage"].update()
 326                 self["ber_value"].update()
 327                 self["snr_bar"].update()
 328                 self["agc_bar"].update()
 329                 self["ber_bar"].update()
 330                 self["lock_state"].update()
 331                 transponderdata = self.tuner.getTransponderData()
 332                 self["frequency_value"].setText(str(transponderdata["frequency"]))
 333                 self["symbolrate_value"].setText(str(transponderdata["symbol_rate"]))
 334                 self["fec_value"].setText(str(transponderdata["fec_inner"]))
 335                 if transponderdata["tuner_locked"] == 1 and self.isMoving and self.stopOnLock:
 336                         self.diseqccommand("stop")
 337                         self.isMoving = False
 338                         self.stopOnLock = False
 339                         self.updateColors(self.getCurrentConfigPath())
 340
 341         def tune(self, transponder):
 342                 if transponder is not None:
 343                         self.tuner.tune(transponder)
 344
 345 class Diseqc:
 346         def __init__(self, frontend):
 347                 self.frontend = frontend
 348
 349         def command(self, what, param = 0):
 350                 if self.frontend:
 351                         cmd = eDVBDiseqcCommand()
 352                         if what == "moveWest":
 353                                 string = 'e03169' + ("%02x" % param)
 354                         elif what == "moveEast":
 355                                 string = 'e03168' + ("%02x" % param)
 356                         elif what == "moveTo":
 357                                 string = 'e0316b' + ("%02x" % param)
 358                         elif what == "store":
 359                                 string = 'e0316a' + ("%02x" % param)
 360                         elif what == "limitOn":
 361                                 string = 'e0316a00'
 362                         elif what == "limitOff":
 363                                 string = 'e03163'
 364                         elif what == "limitEast":
 365                                 string = 'e03166'
 366                         elif what == "limitWest":
 367                                 string = 'e03167'
 368                         else:
 369                                 string = 'e03160' #positioner stop
 370
 371                         print "diseqc command:",
 372                         print string
 373                         cmd.setCommandString(string)
 374                         self.frontend.sendDiseqc(cmd)
 375                         if string == 'e03160': #positioner stop
 376                                 sleep(0.05)
 377                                 self.frontend.sendDiseqc(cmd) # send 2nd time
 378
 379 class Tuner:
 380         def __init__(self, frontend):
 381                 self.frontend = frontend
 382
 383         def tune(self, transponder):
 384                 print "tuning to transponder with data", transponder
 385                 parm = eDVBFrontendParametersSatellite()
 386                 parm.frequency = transponder[0] * 1000
 387                 parm.symbol_rate = transponder[1] * 1000
 388                 parm.polarisation = transponder[2]
 389                 parm.fec = transponder[3]
 390                 parm.inversion = transponder[4]
 391                 parm.orbital_position = transponder[5]
 392                 parm.system = 0  # FIXMEE !! HARDCODED DVB-S (add support for DVB-S2)
 393                 parm.modulation = 1 # FIXMEE !! HARDCODED QPSK
 394                 feparm = eDVBFrontendParameters()
 395                 feparm.setDVBS(parm, True)
 396                 self.lastparm = feparm
 397                 if self.frontend:
 398                         self.frontend.tune(feparm)
 399
 400         def retune(self):
 401                 if self.frontend:
 402                         self.frontend.tune(self.lastparm)
 403
 404         def getTransponderData(self):
 405                 if self.frontend:
 406                         return self.frontend.readTransponderData(True)
 407                 return None
 408
 409 tuning = None
 410
 411 class TunerScreen(ScanSetup):
 412         skin = """
 413                 <screen position="90,100" size="520,400" title="Tune">
 414                         <widget name="config" position="20,10" size="460,350" scrollbarMode="showOnDemand" />
 415                         <widget name="introduction" position="20,360" size="350,30" font="Regular;23" />
 416                 </screen>"""
 417
 418         def __init__(self, session, feid):
 419                 self.feid = feid
 420                 ScanSetup.__init__(self, session)
 421                 self["introduction"].setText("")
 422
 423         def createSetup(self):
 424                 self.typeOfTuningEntry = None
 425                 self.satEntry = None
 426                 self.list = []
 427                 self.typeOfTuningEntry = getConfigListEntry(_('Tune'), tuning.type)
 428                 self.list.append(self.typeOfTuningEntry)
 429                 self.satEntry = getConfigListEntry(_('Satellite'), tuning.sat)
 430                 self.list.append(self.satEntry)
 431                 if tuning.type.value == "manual_transponder":
 432                         self.list.append(getConfigListEntry(_('Frequency'), self.scan_sat.frequency))
 433                         self.list.append(getConfigListEntry(_('Inversion'), self.scan_sat.inversion))
 434                         self.list.append(getConfigListEntry(_('Symbol Rate'), self.scan_sat.symbolrate))
 435                         self.list.append(getConfigListEntry(_("Polarity"), self.scan_sat.polarization))
 436                         self.list.append(getConfigListEntry(_("FEC"), self.scan_sat.fec))
 437                 elif tuning.type.value == "predefined_transponder":
 438                         self.list.append(getConfigListEntry(_("Transponder"), tuning.transponder))
 439                 self["config"].list = self.list
 440                 self["config"].l.setList(self.list)
 441
 442         def newConfig(self):
 443                 if self["config"].getCurrent() == self.typeOfTuningEntry:
 444                         self.createSetup()
 445                 elif self["config"].getCurrent() == self.satEntry:
 446                         self.createSetup()
 447
 448         def createConfig(self, foo):
 449                 if not tuning:
 450                         global tuning
 451                         tuning = ConfigSubsection()
 452                         tuning.type = ConfigSelection(
 453                                 default = "manual_transponder",
 454                                 choices = { "manual_transponder" : _("Manual transponder"),
 455                                                         "predefined_transponder" : _("Predefined transponder") } )
 456                         tuning.sat = ConfigSatlist(list=nimmanager.getRotorSatListForNim(self.feid))
 457                         tuning.sat.addNotifier(self.tuningSatChanged)
 458                         self.updateTransponders()
 459                         TunerScreenConfigCreated = True
 460                 ScanSetup.createConfig(self, None)
 461
 462         def tuningSatChanged(self, *parm):
 463                 self.updateTransponders()
 464
 465         def updateTransponders(self):
 466                 if len(tuning.sat.choices):
 467                         transponderlist = nimmanager.getTransponders(int(tuning.sat.value))
 468                         tps = []
 469                         cnt=0
 470                         for x in transponderlist:
 471                                 if x[3] == 0:
 472                                         pol = "H"
 473                                 elif x[3] == 1:
 474                                         pol = "V"
 475                                 elif x[3] == 2:
 476                                         pol = "CL"
 477                                 elif x[3] == 3:
 478                                         pol = "CR"
 479                                 if x[4] == 0:
 480                                         fec = "FEC_AUTO"
 481                                 elif x[4] == 1:
 482                                         fec = "FEC_1_2"
 483                                 elif x[4] == 2:
 484                                         fec = "FEC_2_3"
 485                                 elif x[4] == 3:
 486                                         fec = "FEC_3_4"
 487                                 elif x[4] == 4:
 488                                         fec = "FEC_5_6"
 489                                 elif x[4] == 5:
 490                                         fec = "FEC_7_8"
 491                                 elif x[4] == 5:
 492                                         fec = "FEC_8_9"
 493                                 elif x[4] == 6:
 494                                         fec = "FEC_None"
 495                                 tps.append(str(x[1]) + "," + str(x[2]) + "," + pol + "," + fec)
 496                         tuning.transponder = ConfigSelection(choices=tps)
 497
 498         def keyGo(self):
 499                 returnvalue = (0, 0, 0, 0, 0, 0)
 500                 satpos = int(tuning.sat.value)
 501                 if tuning.type.value == "manual_transponder":
 502                         returnvalue = (
 503                                 self.scan_sat.frequency.value,
 504                                 self.scan_sat.symbolrate.value,
 505                                 self.scan_sat.polarization.index,
 506                                 self.scan_sat.fec.index,
 507                                 self.scan_sat.inversion.index,
 508                                 satpos)
 509                 elif tuning.type.value == "predefined_transponder":
 510                         transponder = nimmanager.getTransponders(satpos)[tuning.transponder.index]
 511                         returnvalue = (int(transponder[1] / 1000), int(transponder[2] / 1000), transponder[3], transponder[4], 2, satpos)
 512                 self.close(returnvalue)
 513
 514         def keyCancel(self):
 515                 self.close(None)
 516
 517 class NimSelection(Screen):
 518         skin = """
 519                 <screen position="140,165" size="400,100" title="select Slot">
 520                         <widget name="nimlist" position="20,10" size="360,75" />
 521                 </screen>"""
 522
 523         def __init__(self, session):
 524                 Screen.__init__(self, session)
 525
 526                 nimlist = nimmanager.getNimListOfType(nimmanager.nimType["DVB-S"])
 527                 nimMenuList = []
 528                 for x in nimlist:
 529                         nimMenuList.append((_("NIM ") + (["A", "B", "C", "D"][x]) + ": " + nimmanager.getNimName(x) + " (" + nimmanager.getNimTypeName(x) + ")", x))
 530
 531                 self["nimlist"] = MenuList(nimMenuList)
 532
 533                 self["actions"] = ActionMap(["OkCancelActions"],
 534                 {
 535                         "ok": self.okbuttonClick ,
 536                         "cancel": self.close
 537                 }, -1)
 538
 539         def okbuttonClick(self):
 540                 selection = self["nimlist"].getCurrent()
 541                 self.session.open(PositionerSetup, selection[1])
 542
 543 def PositionerMain(session, **kwargs):
 544         nimList = nimmanager.getNimListOfType(nimmanager.nimType["DVB-S"])
 545         if len(nimList) == 0:
 546                 session.open(MessageBox, _("No positioner capable frontend found."), MessageBox.TYPE_ERROR)
 547         else:
 548                 if session.nav.RecordTimer.isRecording():
 549                         session.open(MessageBox, _("A recording is currently running. Please stop the recording before trying to configure the positioner."), MessageBox.TYPE_ERROR)
 550                 else:
 551                         usableNims = []
 552                         for x in nimList:
 553                                 configured_rotor_sats = nimmanager.getRotorSatListForNim(x)
 554                                 if len(configured_rotor_sats) != 0:
 555                                         usableNims.append(x)
 556                         if len(usableNims) == 1:
 557                                 session.open(PositionerSetup, usableNims[0])
 558                         elif len(usableNims) > 1:
 559                                 session.open(NimSelection)
 560                         else:
 561                                 session.open(MessageBox, _("No tuner is configured for use with a diseqc positioner!"), MessageBox.TYPE_ERROR)
 562
 563 def PositionerSetupStart(menuid):
 564         if menuid == "scan":
 565                 return [(_("Positioner setup"), PositionerMain)]
 566         else:
 567                 return []
 568
 569 def Plugins(**kwargs):
 570         return PluginDescriptor(name=_("Positioner setup"), description="Setup your positioner", where = PluginDescriptor.WHERE_SETUP, fnc=PositionerSetupStart)