ISG camera support: unexpected answer (0x8fff) problem

[dpwoo]

Hi， I am using LW-AL-CMV4000M from ISG cameras and aravis-0.6.4. When i run arv-camera-test, it sometimes failed, and output like this, i attach the output log: ################### packet_type = cmd command = read-memory-cmd size = 12 id = 65326 address = 0x0000000000020008 size = 64 (0x00000040) 00000000 55 33 56 43 00 40 00 08 0c 00 2e ff 08 00 02 00 U3VC.@.......... 00000010 00 00 00 00 00 00 40 00 ......@.
packet_type = (null) command = read-memory-ack size = 0 id = 65326 00000000 55 33 56 43 ff 8f 01 08 00 00 2e ff U3VC........
[[UvDevice::read_memory] Unexpected answer (0x8fff) [UvDevice::_bootstrap] Error during memory read [UvDevice::new] Failed to bootstrap USB device ##################################### Running environment：ubuntu 18.04， aarch64

Can you provide any help with debugging this issue? Thanks

[dpwoo]

This problem may be due to my incorrect operation. For example, in image acquisition, i kill the arv-camera-test, and then the problem arises. And i have to power off camera and then power up again to make camera nomal.

[EmmanuelP]

Hi,

That is still interesting, may be there is something to do in aravis.

Could you try to get a debug output when the problem arises, by setting the ARV_DEBUG environment variable using export ARV_DEBUG=all:3 ?

Thanks.

[dpwoo]

Here is the debug output. arv-camera-test.log

When the problem arises, restart system didn't work. So I think maybe the camera is in a wrong state at this time. In the GenCp Version 1.2, the status code 0x8fff description as "Generic error".

[EmmanuelP]

Thanks @dpwoo for the debug output.

The 'Generic error' is not really helpful. On a positive note, the fact the error happens after successful memory reads may suggest there is something to do that would put the camera back in a working state.

You may try to contact ISG support and see if they are willing to help us to fix this issue.