Difference between revisions of "Blocking Access To Serial Port"
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By default when you connect a usb->serial device the plug and play engine will try to figure out what type of serial device is attached by sending data across the port to test if it's a known TV, Alarm panel, etc. If this is a serial device which you already have your own drivers, this can cause problems as the plug and play engine will also be opening the port and sending data on it. To prevent this from happening, tail the DCERouter's log, such as using the command TailDCERouter.sh, connect the device and look for the Device Detected entry for this device that has the category "serial". It will look like this: | By default when you connect a usb->serial device the plug and play engine will try to figure out what type of serial device is attached by sending data across the port to test if it's a known TV, Alarm panel, etc. If this is a serial device which you already have your own drivers, this can cause problems as the plug and play engine will also be opening the port and sending data on it. To prevent this from happening, tail the DCERouter's log, such as using the command TailDCERouter.sh, connect the device and look for the Device Detected entry for this device that has the category "serial". It will look like this: | ||
| − | 07 07/16/07 8:46:28.925 Received Message from 16 (HAL / Bedroom (Other)) to -1001 (unknown / ), type 2 id 65 Event:Device Detected, retry none, parameters: <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Received Message from 16 (HAL / Bedroom (Other)) to -1001 (unknown / ), type 2 id 65 Event:Device Detected, retry none, parameters: <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 5(Mac Address): <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 5(Mac Address): <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 13(Text): <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 13(Text): <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 28(IP Address): <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 28(IP Address): <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 49(PK_DeviceTemplate): 0 <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 49(PK_DeviceTemplate): 0 <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 51(VendorModelID): 14534026 <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 51(VendorModelID): 14534026 <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 52(PK_CommMethod): 4 <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 52(PK_CommMethod): 4 <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 53(PK_PnpProtocol): 0 <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 53(PK_PnpProtocol): 0 <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 54(PNP Serial Number): /org/freedesktop/Hal/devices/usb_device_1453_4026_noserial <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 54(PNP Serial Number): /org/freedesktop/Hal/devices/usb_device_1453_4026_noserial <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 55(DeviceData): 37|pci0000:00/0000:00:0b.0+1 <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 55(DeviceData): 37|pci0000:00/0000:00:0b.0+1 <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 56(Category): serial <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 56(Category): serial <0x757aeb90> |
| − | 07 07/16/07 8:46:28.925 Parameter 59(Signature): 16,HAL <0x757aeb90> | + | 07 07/16/07 8:46:28.925 Parameter 59(Signature): 16,HAL <0x757aeb90> |
| − | Then, go into the UnknownDevices table and add a row with that same vendor ID, and fill the serial number field with | + | Then, go into the UnknownDevices table and add a row with that same vendor ID, and fill the serial number field with the value of "55(DeviceData)", and FK_Device_PC will be the device id of the topmost device (ie the pc or media director). For the above, the row added is: |
| − | + | INSERT INTO `UnknownDevices`(`VendorModelId`,`SerialNumber`,`FK_Device_PC`) VALUES ( '14534026','37|pci0000:00/0000:00:0b.0+9','1') | |
Latest revision as of 17:02, 17 May 2010
By default when you connect a usb->serial device the plug and play engine will try to figure out what type of serial device is attached by sending data across the port to test if it's a known TV, Alarm panel, etc. If this is a serial device which you already have your own drivers, this can cause problems as the plug and play engine will also be opening the port and sending data on it. To prevent this from happening, tail the DCERouter's log, such as using the command TailDCERouter.sh, connect the device and look for the Device Detected entry for this device that has the category "serial". It will look like this:
07 07/16/07 8:46:28.925 Received Message from 16 (HAL / Bedroom (Other)) to -1001 (unknown / ), type 2 id 65 Event:Device Detected, retry none, parameters: <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 5(Mac Address): <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 13(Text): <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 28(IP Address): <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 49(PK_DeviceTemplate): 0 <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 51(VendorModelID): 14534026 <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 52(PK_CommMethod): 4 <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 53(PK_PnpProtocol): 0 <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 54(PNP Serial Number): /org/freedesktop/Hal/devices/usb_device_1453_4026_noserial <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 55(DeviceData): 37|pci0000:00/0000:00:0b.0+1 <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 56(Category): serial <0x757aeb90> 07 07/16/07 8:46:28.925 Parameter 59(Signature): 16,HAL <0x757aeb90>
Then, go into the UnknownDevices table and add a row with that same vendor ID, and fill the serial number field with the value of "55(DeviceData)", and FK_Device_PC will be the device id of the topmost device (ie the pc or media director). For the above, the row added is:
INSERT INTO `UnknownDevices`(`VendorModelId`,`SerialNumber`,`FK_Device_PC`) VALUES ( '14534026','37|pci0000:00/0000:00:0b.0+9','1')
