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Parameters

The camera-ov7670 command allows you to set various parameters using subcommands.

Here are some examples of main subcommands:

  • mirror: Enable/disable mirror (horizontal flip)
L:>camera-ov7670 mirror:on
  • vflip: Enable/disable vertical flip
L:>camera-ov7670 vflip:on
  • brightness: Set brightness (-127 to +127, default 0)
L:>camera-ov7670 brightness:-4
  • contrast: Set contrast (0 to 255, default 64)
L:>camera-ov7670 contrast:15
  • sharpness: Set sharpness (0 to 31, default 0)
L:>camera-ov7670 sharpness:7
  • awb, awb-red, awb-blue, awb-green: Enable/disable auto white balance (AWB) and set gain for each color (0 to 255, default 128). If awb is set to on, the gains are adjusted automatically. If set to off, the values specified by awb-red, awb-blue, and awb-green are used.
L:>camera-ov7670 awb:off
L:>camera-ov7670 awb-reds:120 awb-blue:140 awb-green:180

Command Reference

camera-ov7670

Help of the Command
Usage: camera-ov7670 [OPTION]... [SUBCMD...]
Options:
 -h --help prints this help
Sub Commands:
 setup                              setup a OV7670 camera module with the given parameters:
                                     {i2c:BUS d0:PIN xclk:PIN pclk:PIN href:PIN vsync:PIN [pwdn:PIN] [reset:PIN] [freq:FREQ]}
 reso:RESO                          gets/sets resolution: vga, qvga, qqvga, qqqvga
 format:FORMAT                      gets/sets format: rgb565, yuv422
 dump                               dumps all OV7670 registers
 ccir656:[on|off]                   enables/disables CCIR656 mode
 scale:[on|off]                     enables/disables scaling
 dcw:[on|off]                       enables/disables DCW
 color-bar:[on|off]                 enables/disables color bar
 agc:[on|off]                       enables/disables AGC
 awb:[on|off]                       enables/disables AWB
 aec:[on|off]                       enables/disables AEC
 mirror:[on|off]                    enables/disables mirror
 vflip:[on|off]                     enables/disables vertical flip
 black-sun:[on|off]                 enables/disables black sun detection
 negative-image:[on|off]            enables/disables negative image
 auto-output-window:[on|off]        enables/disables auto output window
 night-mode:[on|off]                enables/disables night mode
 d56-auto-detection:[on|off]        enables/disables D56 auto detection
 auto-sharpness:[on|off]            enables/disables auto sharpness
 auto-denoise:[on|off]              enables/disables auto denoise
 dsp-color-bar:[on|off]             enables/disables DSP color bar
 uv-average:[on|off]                enables/disables UV average
 auto-contrast-center:[on|off]      enables/disables auto contrast center
 lens-correction:[on|off]           enables/disables lens correction
 black-pixel-correction:[on|off]    enables/disables black pixel correction
 white-pixel-correction:[on|off]    enables/disables white pixel correction
 rgb444:[on|off]                    enables/disables RGB444
 ablc:[on|off]                      enables/disables ABLC
 brightness:[VALUE]                 gets/sets brightness (-127 to 127)
 contrast:[VALUE]                   gets/sets contrast (0 to 255)
 sharpness:[VALUE]                  gets/sets sharpness (0 to 31)
 sharpness-max:[VALUE]              gets/sets sharpness max (0 to 31)
 sharpness-min:[VALUE]              gets/sets sharpness min (0 to 31)
 denoise:[VALUE]                    gets/sets denoise (0 to 255)
 denoise-offset:[VALUE]             gets/sets denoise offset (0 to 255)
 awb-blue:[VALUE]                   gets/sets AWB blue gain (0 to 255)
 awb-red:[VALUE]                    gets/sets AWB red gain (0 to 255)
 awb-green:[VALUE]                  gets/sets AWB green gain (0 to 255)
 exposure:[VALUE]                   gets/sets exposure (0 to 65535)
 hstart:[VALUE]                     gets/sets hstart (0 to 65535)
 hstop:[VALUE]                      gets/sets hstop (0 to 65535)
 vstart:[VALUE]                     gets/sets vstart (0 to 65535)
 vstop:[VALUE]                      gets/sets vstop (0 to 65535)