在V853开发板上如何获取camera的一帧图像

[hzhy1234]

在V853开发板上使用v4l2-ctl工具 貌似不可以直接使用

root@TinaLinux:/hzhy#  v4l2-ctl --info
[  715.242229] [VIN_ERR]v4l2 sub device scaler get_selection error!
Driver Info[  715.257521] [VIN_ERR]v4l2 sub device scaler get_selection error!
:
        Driver name      : sunxi-vin
        Card type        : sunxi-vin
        Bus info         : 
        Driver version   : 1.0.0
        Capabilities     : 0x85201000
                Video Capture Multiplanar
                Read/Write
                Streaming
                Extended Pix Format
                Device Capabilities
        Device Caps      : 0x00200000
                Extended Pix Format
Media Driver Info:
        Driver name      : sunxi-vin-media
        Model            : Allwinner Vin
        Serial           : 
        Bus info         : 
        Media version    : 0.1.0
        Hardware revision: 0x00000000 (0)
        Driver version   : 0.0.0
Interface Info:
        ID               : 0x03000009
        Type             : V4L Video
Entity Info:
        ID               : 0x00000008 (8)
        Name             : vin_video0
        Function         : V4L2 I/O
        Pad 0x0100000b   : Sink
          Link 0x020000ad: from remote pad 0x1000007 of entity 'vin_cap.0': Data, Enabled
root@TinaLinux:/hzhy# 
root@TinaLinux:/hzhy# v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=
1080,pixelformat=NV12 --stream-mmap=3 --stream-skip=30 --stream-to=tst.out --str
eam-count=1 --stream-pol
[  799.397359] [VIN_ERR]v4l2 sub device scaler get_selection error!
VIDIOC_G_FMT: failed: Invalid ar[  799.411966] [VIN_ERR]v4l2 sub device scaler get_selection error!
gument
unsupported stream type

请问 如何可以获取一张camera图像 谢谢。已经有video节点，外接双目gc2053_mipi

root@TinaLinux:/hzhy# ls /dev
by-name             tty                 tty48               v4l-subdev26
cedar_dev           tty0                tty49               v4l-subdev27
console             tty1                tty5                v4l-subdev28
cpu_dma_latency     tty10               tty50               v4l-subdev29
disp                tty11               tty51               v4l-subdev3
fb0                 tty12               tty52               v4l-subdev30
full                tty13               tty53               v4l-subdev31
g2d                 tty14               tty54               v4l-subdev32
gpiochip0           tty15               tty55               v4l-subdev33
i2c-0               tty16               tty56               v4l-subdev34
i2c-1               tty17               tty57               v4l-subdev35
i2c-2               tty18               tty58               v4l-subdev36
i2c-3               tty19               tty59               v4l-subdev37
i2c-4               tty2                tty6                v4l-subdev38
input               tty20               tty60               v4l-subdev39
ion                 tty21               tty61               v4l-subdev4
kmsg                tty22               tty62               v4l-subdev40
media0              tty23               tty63               v4l-subdev41
memory_bandwidth    tty24               tty7                v4l-subdev42
mmcblk0             tty25               tty8                v4l-subdev43
mmcblk0boot0        tty26               tty9                v4l-subdev5
mmcblk0boot1        tty27               ttyS0               v4l-subdev6
mmcblk0p1           tty28               ttyS3               v4l-subdev7
mmcblk0p2           tty29               urandom             v4l-subdev8
mmcblk0p3           tty3                usb-ffs             v4l-subdev9
mmcblk0p4           tty30               v4l-subdev0         vcs
mmcblk0p5           tty31               v4l-subdev1         vcs1
mmcblk0p6           tty32               v4l-subdev10        vcsa
mmcblk0p7           tty33               v4l-subdev11        vcsa1
mmcblk0rpmb         tty34               v4l-subdev12        video0
network_latency     tty35               v4l-subdev13        video1
network_throughput  tty36               v4l-subdev14        video12
null                tty37               v4l-subdev15        video13
ptmx                tty38               v4l-subdev16        video4
pts                 tty39               v4l-subdev17        video5
random              tty4                v4l-subdev18        video8
rfkill              tty40               v4l-subdev19        video9
rtc0                tty41               v4l-subdev2         vipcore
shm                 tty42               v4l-subdev20        watchdog
sid_efuse           tty43               v4l-subdev21        watchdog0
snd                 tty44               v4l-subdev22        watchdog1
sunxi-reg           tty45               v4l-subdev23        wiegand driver
sunxi-wlan          tty46               v4l-subdev24        zero
sunxi_soc_info      tty47               v4l-subdev25

[whycan]

sdk里面有一个 camerademo，可以抓图。

[hzhy1234]

@whycan 您好，请问是用开发板的v853的SDK，不带mpp库的那个吧？

[whycan]

@hzhy1234
是的

[Sumyy]

您好，请教一下video节点是怎么弄出来的，我用的1.2的sdk，始终配不出来video0 节点