Difference between revisions of "OV7670"

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(Usage)
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* http://www.elechouse.com/elechouse/index.php?main_page=product_info&cPath=168_169&products_id=803&zenid=0499c29be9e834578ef67f2012de5a4b
 
* http://www.elechouse.com/elechouse/index.php?main_page=product_info&cPath=168_169&products_id=803&zenid=0499c29be9e834578ef67f2012de5a4b
 
* others ?
 
* others ?
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 +
==Connecting the Elechouse module to the APF27==
 +
* OV7670 normally needs a 1,8V logic core voltage and an I/O Voltage >= 2,5V, but the modules don't care about 1,8V... Strange but it seems to work...
 +
* Montage is straightforward, only a special cable is needed (or single wires):
  
 
==Kernel config==
 
==Kernel config==

Revision as of 12:06, 22 January 2014

Page under construction... Construction.png Informations on this page are not guaranteed !!

Available commercial modules:

Connecting the Elechouse module to the APF27

  • OV7670 normally needs a 1,8V logic core voltage and an I/O Voltage >= 2,5V, but the modules don't care about 1,8V... Strange but it seems to work...
  • Montage is straightforward, only a special cable is needed (or single wires):

Kernel config

  • Done by default on APF27
$ make linux-menuconfig
Device Drivers  --->
    Multimedia devices  --->
        [*] Video capture adapters  --->
            ...
            <M>   SoC camera support
            ...
            <M>     ov7670 camera support
            ...

Usage

# modprobe mx27_camera

Linux video capture interface: v2.00
mx27-camera mx27-camera.0: initialising
mx27-camera mx27-camera.0: Camera clock frequency: 33250006
mx27-camera mx27-camera.0: Using EMMA

# modprobe ov7670_soc

OmniVision ov7670 sensor driver, at your service
camera 0-0: Camera driver attached to camera 0
mx27-camera mx27-camera.0: mclk_get_divisor not implemented. Running at max speed
ov7670 0-0021: initializing
ov7670 0-0021: found an 0V7670 sensor
camera 0-0: Camera driver detached from camera 0

Test

# capture --cam_width 640 --cam_height 480 --width 640 --height 480 &