Difference between revisions of "OV3640"
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==Debugging== | ==Debugging== | ||
| − | * Access to sensor registers | + | * Access to sensor registers from userspace (here I2C 7 bit @ = 0x30): |
<pre class="apf"> | <pre class="apf"> | ||
# ./v4l2-dbg -c 0x30 -g 0x3d | # ./v4l2-dbg -c 0x30 -g 0x3d | ||
Revision as of 15:08, 28 July 2010
OV3640 is an Omnivision 3 Mpixels sensor that can be found in the following commercial camera modules:
- http://framos.eu/4702.html?&L=3 but: this product has a limited order quantity of 500pcs
- ?? if someone knows one more affordable... tell us !!
Sensor seems pretty cool but, as always with Omnivision, datasheets are under NDA and init procedure looks like black magic.
Drivers
- Freescale i.MX27/i.MX51 BSP have a driver for it (very customized one == only usable with Freescale BSP/boards)
- Somebody from OMAP community tried to push a driver some times ago:
Our actual driver is a mix between these twos.
# modprobe mx27_camera # modprobe ov3640
Debugging
- Access to sensor registers from userspace (here I2C 7 bit @ = 0x30):
# ./v4l2-dbg -c 0x30 -g 0x3d
ioctl: VIDIOC_DBG_G_REGISTER
Register 0x0000003d = 99h (153d 10011001b)
# ./v4l2-dbg -c 0x30 -s 0x3d 0
Register 0x0000003d set to 0x0
# ./v4l2-dbg -c 0x30 -g 0x3d
ioctl: VIDIOC_DBG_G_REGISTER
Register 0x0000003d = 0h (0d 00000000b)
# ./v4l2-dbg -c 0x30 -l
ioctl: VIDIOC_DBG_G_REGISTER
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00000000: 00 80 80 12 00 00 00 00 00 01 96 52 04 80 01 43
00000010: 40 00 10 8f 4a 00 04 1a ba 01 81 00 7f a2 10 00
...............
