Sorry, it is my fault.
I trace into the function and lead to my save_state() low level function that
call the read data function to store the state. :)
There also another bug on the low level frob_control function. I am not clear
about its operation at first, so I change the control like (old & ~mask) |
value, but acutally it is
(old | mask) & ~val, set all vaule in mask to 1 and those in val to zero. I
read the usage of it in the code and realise what I done was wrong.
I am getting close to a working code, and now I have the device pass the
IEEE1284 complient test, but fail at deviceid, saying 0x4 mode is rejected by
device. :) I think is propley my fault somewhere.
Thanks for your help!
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