FAQ: [#6494] usb camera can't use on bf548(2011)

Document created by Aaronwu Employee on Sep 11, 2013
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[#6494] usb camera can't use on bf548

Submitted By: Bob Liu

Open Date

2011-02-24 05:54:13    

Priority:

Medium     Assignee:

Bob Liu

Status:

Open     Fixed In Release:

N/A

Found In Release:

2010R1     Release:

2010r1

Category:

N/A     Board:

N/A

Processor:

BF548     Silicon Revision:

Is this bug repeatable?:

Yes     Resolution:

Fixed

Uboot version or rev.:

    Toolchain version or rev.:

gcc 2010r1

App binary format:

N/A     

Summary: usb camera can't use on bf548

Details:

 

root:/> luvcview  -f yuv -s 320x240 -i 30

luvcview 0.2.4

 

SDL information:

  Video driver: fbcon

  Hardware surfaces are available (382k video memory)

Device information:

  Device path:  /dev/video0

Stream settings:

  Frame format: YUYV

  Frame size:   320x240

  Frame rate:   30 fps

Unable to map buffer: Invalid argument

Init v4L2 failed !! exit fatal

root:/>

 

 

Follow-ups

 

--- Bob Liu                                                  2011-03-01 04:58:10

nommu.c:  do_mmap_pgoff() will call f_op->read(), but uvc driver doesn't

support read function, so it always return Invalid argument.

 

--- Bob Liu                                                  2011-03-09 05:20:38

fixed by commit 9703

 

 

 

    Files

    Changes

    Commits

    Dependencies

    Duplicates

    Associations

    Tags

 

File Name     File Type     File Size     Posted By

camera.config    application/octet-stream    39476    Bob Liu

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