On Jan 11, 2017, at 11:42 PM, Weber René <rwe...@baumer.com> wrote:
>> We working at software for industrial cameras which are supported by the >> cameralink standard. We use Wireshark to monitor the control interface. We >> have implemented a solution similar like the u3v dissector and uses link >> type DLT_USER0. The cameralink interface is basically a serial interface >> like rs232 uart. >So this is for GenCP over a serial port, rather than GenCP-over-UDP? I don't know a GenCP-over-UDP - where can I find some information about this? CamaraLink is f.i. to find in https://en.wikipedia.org/wiki/Camera_Link - at the schema you can see the serial to grabber and the serial the camera line. The original cameralink specification you can download at http://www.visiononline.org/vision-standards-details.cfm?id=171&type=6. Without registration is it find at many other location (http://www.adlinktech.com/cn/products/MachineVision/pdf/CameraLinkOfficial.pdf) The GenCP control channel is at the end a bidirectional serial channel like a pc uart (electrical are this two LVDS-signal lines). The signal data are asynchron serial frames with start, stop and data bit exactly like uart. The GenCP frames self are described in http://www.emva.org/wp-content/uploads/GenICam_GenCP_1.2.pdf. >> But often exist this only inside the application and not as separate >> comport. The using of DLT_USER0 is not so comfortable, because the protocol >> at every user is at first to set to cameralink ... Therefore, I'm requesting >> a DLT_ value for this. Please let me know what the proper procedure is for >> this or if you have any other questions/concerns. >So do the packets in such a pcap or pcapng file start with the serial prefix >described in section 1.5 "Serial Prefix", followed by the common command data >described in section 4.3 "Common Command Data", followed by the specific >command data for the command in question (section 1.6 "Serial Postfix" says >there's no postfix for serial ports)? correct. U3V in opposite to cameralink has a different prefix and a different endian order. > (Presumably the same code can be used to dissect the common command data + > specific command data for GenCP-over-UDP.) perhaps Geschäftsführer: Dr. Albert Schmidt· Dr. Oliver Vietze Sitz der Gesellschaft: Radeberg Amtsgericht Dresden: HRB 15379 Ust. ID: DE 189714583 _______________________________________________ tcpdump-workers mailing list tcpdump-workers@lists.tcpdump.org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
