embedded board question

Hi all

How do I program the micro-controller registers of an embedded
linux based board ?

The registers have fixed internal memory address
so for example if a register with absolute physical address
of 100 , how do I write a byte to it with linux based eclipse compiler for example ?

Thanks
EC

Hi,

You may need to delve into the assembler language of the processor used on the board. Every chip/processor type has a different language. But, some suggestions come to mind, one better one is: use a simulator. The next one is: read up on the documentation of the board/processor, without RTMF-ing you, dont misunderstand. The point is, you did'nt mention what board/CPU you use, so, we're all in the blank here

By the way, what are the specs? What board/CPU?

Let's see where thing one splats down

Thor

My question is general for linux based embeded boards like haukboard.com

What linux related C commands should be used ? mmap , other , in what way ?

Thanks
EC

Hi, I did not find haukboard, but did find hawkboard (typo??) - there is a beginners guide, did you know?

I looked at it myself, always had a soft spot for controllers...

Thor

You need to do this via a driver. If the driver does not exist, you need to write a driver to access the registers. Then in your application, you can open the driver and read/write registers. In case you do not know where to start, have a look at Linux Device Drivers, Third Edition e-book http://lwn.net/Kernel/LDD3/.