Command for reading registers

[pngali]

Hi,

Can anyone help me with the command for reading registers?????




Thanks in advance

[sanjaykatiyar]

What registers?? Users?

[pngali]

i want to know the command or api in linux for reading into a register on a board like mpc8548(powerpc)??

[Rubberman]

Are you sure you don't mean an I/O port? There are, AFAIK, no system-level commands to do this, though there are C-language functions that will do this, inb(), inw(), inl(), etc.

[pngali]

Could you provide more info on the c language functions that u have mentioned here?

[rituraj.goswami]

read a high level C level book,buddy.

[Rubberman]

read a high level C level book,buddy.

And read the man pages. I/O port programming is on the face of it quite simple, but there are often complicating factors, such as the need to wait between writing to one port, and reading the results of the operation from another. Anyway, from what you say, I'd have to say that you lack the experience needed, though "doing the job" is one good way to get the experience. You also need to have a thorough understanding of the board's operations and that requires reading (and re-reading) the board's reference documentation, programmer's guide (if available), etc.