FX3 with AN75779: sensor data to FX3 and FX3 to host are OK,but video can not be preview

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skyma
Level 1
Level 1
10 sign-ins 5 replies posted 5 sign-ins

Dear sirs,

            I connect DVP to FX3, and use the code of AN75779. It can run without any error, but video can not be preview with any player.

           The format of DVP is bellow: 

Outpur format UYVY
PCLK 74.25M
H SYNC 22500Hz
V SYNC 30Hz
PIC-WIDTH 1650
H-active 1280
V-active 720

         FX3 print and usb traffic receive are bellow:

skyma_0-1621644993669.png

cyfxuvcdscr.c change two positions,

skyma_1-1621645260305.png

           The code of AN75779 is downloaded from:
https://china.cypress.com/documentation/application-notes/an75779-how-implement-image-sensor-interfa...

          Everything seems going well, why the video can not be preview???

          Thanks for any replay and suggestion.....

skyma_2-1621645547614.png

 

 

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1 Solution
YiZ_31
Moderator
Moderator
Moderator
1000 replies posted 750 replies posted 500 replies posted

Hello,

 

Have you changed the glProbeCtrl  and DMA buffer sizeas described in https://community.cypress.com/t5/Knowledge-Base-Articles/UVC-Troubleshooting-Guide-KBA226722/ta-p/25... ?

16380 is the DMA buffer size set in the firmware. Meanwhile, you need to rebuild the GPIF II project if you change the width of GPIF interface. 

 
 
 

YiZ_31_3-1621907806846.png

 

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