| W9966 Camera driver, written by Jakob Kemi (jakob.kemi@telia.com) |
| |
| After a lot of work in softice & wdasm, reading .pdf-files and tiresome |
| trial-and-error work I've finally got everything to work. I needed vision for a |
| robotics project so I borrowed this camera from a friend and started hacking. |
| Anyway I've converted my original code from the AVR 8bit RISC C/ASM code into |
| a working Linux driver. |
| |
| To get it working simply configure your kernel to support |
| parport, ieee1284, video4linux and w9966 |
| |
| If w9966 is statically linked it will always perform aggressive probing for |
| the camera. If built as a module you'll have more configuration options. |
| |
| Options: |
| modprobe w9966.o pardev=parport0(or whatever) parmode=0 (0=auto, 1=ecp, 2=epp) |
| voila! |
| |
| you can also type 'modinfo -p w9966.o' for option usage |
| (or checkout w9966.c) |
| |
| The only thing to keep in mind is that the image format is in Y-U-Y-V format |
| where every two pixels take 4 bytes. In SDL (www.libsdl.org) this format |
| is called VIDEO_PALETTE_YUV422 (16 bpp). |
| |
| A minimal test application (with source) is available from: |
| http://hem.fyristorg.com/mogul/w9966.html |
| |
| The slow framerate is due to missing DMA ECP read support in the |
| parport drivers. I might add working EPP support later. |
| |
| Good luck! |
| /Jakob Kemi |
