Re: [microblaze-uclinux] uclinux-auto doesn't compile without GPIOdriver

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Claudio,

Claudio Lanconelli wrote:

> I add the following lines to machine.c to let the file compile without the 
> GPIO driver.

Good idea - I will add this into CVS.  Thanks for fixing it up.

> What is the purpose of the mach_heartbeat() function?

The idea is to blink an LED durign the timer interrupt - so if the 
machine is alive, you see its heartbeat.  There is also some code in 
there (currently #ifdef'd out) to do a sort of pulse beat, as a function 
of the ucrrent CPU load.  It's quite cool, set a bunch of threads running:

dd if=/dev/zero of=/dev/null

and watch the heartbeat go racing!

Regards,

John


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