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1da177e4 LT |
1 | W9966 Camera driver, written by Jakob Kemi (jakob.kemi@telia.com) |
2 | ||
3 | After a lot of work in softice & wdasm, reading .pdf-files and tiresome | |
4 | trial-and-error work I've finally got everything to work. I needed vision for a | |
5 | robotics project so I borrowed this camera from a friend and started hacking. | |
6 | Anyway I've converted my original code from the AVR 8bit RISC C/ASM code into | |
7 | a working Linux driver. | |
8 | ||
9 | To get it working simply configure your kernel to support | |
10 | parport, ieee1284, video4linux and w9966 | |
11 | ||
12 | If w9966 is statically linked it will always perform aggressive probing for | |
13 | the camera. If built as a module you'll have more configuration options. | |
14 | ||
15 | Options: | |
16 | modprobe w9966.o pardev=parport0(or whatever) parmode=0 (0=auto, 1=ecp, 2=epp) | |
17 | voila! | |
18 | ||
19 | you can also type 'modinfo -p w9966.o' for option usage | |
20 | (or checkout w9966.c) | |
21 | ||
22 | The only thing to keep in mind is that the image format is in Y-U-Y-V format | |
23 | where every two pixels take 4 bytes. In SDL (www.libsdl.org) this format | |
24 | is called VIDEO_PALETTE_YUV422 (16 bpp). | |
25 | ||
26 | A minimal test application (with source) is available from: | |
0ea6e611 | 27 | http://www.slackwaresupport.com/howtos/Webcam-HOWTO |
1da177e4 | 28 | |
48773e68 | 29 | The slow framerate is due to missing DMA ECP read support in the |
1da177e4 LT |
30 | parport drivers. I might add working EPP support later. |
31 | ||
32 | Good luck! | |
33 | /Jakob Kemi |