IOI2CSendRequest problem
IOI2CSendRequest problem
- Subject: IOI2CSendRequest problem
- From: Vitaly Bondar <email@hidden>
- Date: Tue, 24 Jul 2012 09:12:33 +0300
Hello,
I hope that here is correct place to ask about IOKit.
I have faced problem with IOI2CSendRequest function from
"IOKit/i2c/IOI2CInterface.h"
Apple example for fetching EDID from display (using of oxA0 and oxA1
addresses) works fine.
But when i'm trying to use 0x6e/0x6F addresses - can't receive response
from display.
If i send write command to display, like set brightness, i see that it
is applied on display. But when i send command for fetching something -
it is not works.
The commands itself is correct because same things works in Windows
realization.
Part of code and a little more info here:
http://stackoverflow.com/questions/11561623/i2c-communication-in-iokit-on-mac-os-x
Is there is any known issues in i2c communication with display?
Maybe request structure filled wrong?
Will be great to hear even guesses.
Thank you.
Best regards,
Vitaly Bondar
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