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USB superspeed peripherals Forum Discussions

chsh_1759911
Level 3
Level 3
10 sign-ins 10 replies posted 10 questions asked

my program works fine on USB3.0 connect

when i try to use 2.0, cant get any image

 capture data by bushound get correct data length 15372*170+10252 ==> 15360*170+10240(without uvc head) == 1280*1024*2

use e-CAMView show correct resultion and format(1280*1024 Y16)

i think it should be description problem? but dont know how to fix it

zip file is my SS and HS description function too large to post here

 

 

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Rashi_Vatsa
Moderator
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Moderator
5 likes given 500 solutions authored 1000 replies posted

Hello,

From the descriptor file I understand that 1280*1024 *2 (bytes/pixel) @ 10 fps is to be streamed using USB 2.0. Is my understanding correct?

If yes, please confirm that the probe control structure used for USB 2.0 streaming has same settings  as in USB 2.0 descriptors. Please share the probe control structure.

Also, share the UART debug prints to check if some failures are seen on the device side while streaming.

Regards,
Rashi

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Rashi_Vatsa
Moderator
Moderator
Moderator
5 likes given 500 solutions authored 1000 replies posted

Hello,

From the descriptor file I understand that 1280*1024 *2 (bytes/pixel) @ 10 fps is to be streamed using USB 2.0. Is my understanding correct?

If yes, please confirm that the probe control structure used for USB 2.0 streaming has same settings  as in USB 2.0 descriptors. Please share the probe control structure.

Also, share the UART debug prints to check if some failures are seen on the device side while streaming.

Regards,
Rashi

thanks a lot

i forgot change my probe control setting.

now it works fine

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Rashi_Vatsa
Moderator
Moderator
Moderator
5 likes given 500 solutions authored 1000 replies posted

Hello,

Glad to hear that video streaming worked after modifying the probe control structure

Regards,
Rashi
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