How to run ov5642 camera?

[hanseunglee]

Hello !

board  : I.mx6q sabere-sd

kernel : 3.0.35

os : Ubuntu 12.04

I want to run ov5642 camera use CSI(camera sensor interface) .

In my case , set below.

1. imx-test install

2. mxc_v4l2_capture.out  run

----------------------------------------------------------------------------------------------------------

root@freescale /unit_tests$ ./mxc_v4l2_capture.out
in_width = 176, in_height = 144Unable to handle kernel NULL pointer dereference at virtual address 00000030

out_width = 176, out_height = 1pgd = bfc58000
44
top = 0, left = 0
[00000030] *pgd=4f80b831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] PREEMPT SMP
Modules linked in: mxc_v4l2_capture ipu_csi_enc ipu_fg_overlay_sdc ipu_still ipu_bg_overlay_sdc ipu_prp_enc ov5642_camera camera_sensor_clock
CPU: 2    Not tainted  (3.0.35-2666-gbdde708 #22)
PC is at v4l2_int_ioctl_1+0x4/0x64
LR is at mxc_v4l_open+0x15c/0x344 [mxc_v4l2_capture]
pc : [<8037f01c>]    lr : [<7f031b98>]    psr: a0000013
sp : bfb61cc8  ip : bfcbf034  fp : 00000000
r10: 00000000  r9 : 00000000  r8 : bfe6d8c0
r7 : 00000000  r6 : ba11a000  r5 : bfcbf008  r4 : bfcbf000
r3 : bfcbf03c  r2 : bfb61db4  r1 : 000003ec  r0 : 00000000
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
Control: 10c53c7d  Table: 4fc5804a  DAC: 00000015
Process mxc_v4l2_captur (pid: 3492, stack limit = 0xbfb602f0)
Stack: (0xbfb61cc8 to 0xbfb62000)
Segmentation fault1cc0:                   bfcbf03c bfcbf000 bfcbf008 7f031b98 bf8a2400 bc0d8b20
1ce0: 00000001 80b21960 00000041 80b21960 80ad3a70 60000113 8c01c1cc 00000000
1d00: bfb60000 80ad3cc0 bfb60000 000200da 00000000 80b22444 00000003 00000000
1d20: 00000000 00000002 60000013 60000113 00000001 ffffffff 00000000 80b21960
1d40: bfb60000 00000002 80b22440 00000000 80ad3b38 bc0d8c00 bc0d8c00 800be1c4
1d60: bc0d8b20 bfca45a0 bff14630 800c06e8 80b21960 00000002 bfb60000 80ad3cc0
1d80: ba16fa00 00000000 00000000 80b22be0 8003de34 ffffffff 00000000 00000000
1da0: 00000002 80096d74 80b227cc ffffffff bffb2000 00000002 00000000 80096df4
1dc0: 00000000 8c018f90 bfc92a40 80233afc 7f035d80 800f7844 bff8eb80 80096e18
1de0: bc0d8d38 05100005 bfb60000 800f7884 ba11a000 7f031a3c ba11a008 bfe6d8c0
1e00: bfc92a40 00000000 80537a50 80372f44 80372e70 bf8e89d0 00000000 bfe6d8c0
1e20: bfc92a40 800f7ff4 bc027198 00000000 bfe6d8c0 bc2b3770 bfe6da00 bf8e89d0
1e40: 800f7ee8 800f2c88 00000000 bfb61ef8 00000002 bf8e89d0 00000026 00000000
1e60: 00000000 80100de8 bc027198 ffffff9c bfb60000 ba29c070 00000000 bf8e89d0
1e80: bfb61ef8 bfb61f78 ba2ec000 bfb61eb4 bfb60000 bfb60000 00000000 8010133c
1ea0: bfb61ec4 80b22be0 ba32e000 8005087c 00000261 bfe6da00 bc2b3770 bfb61ee4
1ec0: bfb60000 00000000 ba320000 00000001 bfb61f78 ba2ec000 ffffff9c ffffff9c
1ee0: bfb60000 00000000 00000000 80101704 00000041 8006b2b0 bfe6da00 bc2b3770
1f00: d9d3cd40 00000006 ba2ec005 00000000 bc051110 bf8e89d0 00000101 00000004
1f20: 00000000 00000000 802899dc 00011960 80ad3d14 000085c4 bffd27e0 ba239a40
1f40: 00000000 bffd2820 00000002 00000003 00000000 00000000 000085c4 ba2ec000
1f60: 00000002 00000003 00000001 800f3bc4 00000000 00000000 00000002 00000000
1f80: 00000026 00000100 00000008 7ed39dc4 00000001 000085c4 00000005 80043144
1fa0: 00000000 80042fc0 7ed39dc4 00000001 00011960 00000002 00000000 00008590
1fc0: 7ed39dc4 00000001 000085c4 00000005 00000000 00000000 2abb4000 00000000
1fe0: 00000000 7ed399d8 00008844 2ab1712c 60000010 00011960 00000000 00000000
[<8037f01c>] (v4l2_int_ioctl_1+0x4/0x64) from [<7f031b98>] (mxc_v4l_open+0x15c/0x344 [mxc_v4l2_capture])
[<7f031b98>] (mxc_v4l_open+0x15c/0x344 [mxc_v4l2_capture]) from [<80372f44>] (v4l2_open+0xd4/0x100)
[<80372f44>] (v4l2_open+0xd4/0x100) from [<800f7ff4>] (chrdev_open+0x10c/0x1d0)
[<800f7ff4>] (chrdev_open+0x10c/0x1d0) from [<800f2c88>] (__dentry_open.isra.14+0x16c/0x2b4)
[<800f2c88>] (__dentry_open.isra.14+0x16c/0x2b4) from [<80100de8>] (do_last.isra.34+0x308/0x684)
[<80100de8>] (do_last.isra.34+0x308/0x684) from [<8010133c>] (path_openat+0xb8/0x3a4)
[<8010133c>] (path_openat+0xb8/0x3a4) from [<80101704>] (do_filp_open+0x2c/0x80)
[<80101704>] (do_filp_open+0x2c/0x80) from [<800f3bc4>] (do_sys_open+0xdc/0x174)
[<800f3bc4>] (do_sys_open+0xdc/0x174) from [<80042fc0>] (ret_fast_syscall+0x0/0x30)
Code: e30f0dfd e34f0fff e12fff1e e92d4038 (e590c030)
---[ end trace e8f4a65e695d7ae2 ]---

How to slove error? I can not solve. OTL..

[jimmychan]

Please read the "i.MX_6Dual6Quad_BSP_Porting_Guide.pdf" Chapter 7 --- Supporting the i.MX 6 Camera Sensor Interface CSI0. There are the details about how to select the driver in kernel configuration, how to load the modules and how to test the camera.

You can download the Linux 3.0.35 BSP document from here:

i.MX 6 Series Software and Development Tool|NXP