Hello,
I have faced problem with IOI2CSendRequest function from
"IOKit/i2c/IOI2CInterface.h"
If this mailing list is wrong for asking this question, please direct me
to correct place.
Apple example for fetching EDID from display (using of oxA0 and oxA1
addresses) works fine.
(http://www.opensource.apple.com/source/IOGraphics/IOGraphics-409/tools/i2cexample.c)
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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