Using gpio in MPC8309

Using gpio in MPC8309

[Gal Afel]

Hello,

I just got a TWR-MPC8309 from Freescale running Embedded Linux OS. The kernel
version is Linux 2.6.11+pq3 patches and the kernel preconfig file is
linux_2.6.11_mpc8548_cds_def.config.

I'm new to processors running Linux and I'm having a hard time trying to
understand how can I program the GPIO and use them. Is there a tutorial or any
documentation you could provide me to get started on accessing the processor
pins please?

I'm using CodeWarrior Development Studio for Power Architecture version 10.0.2
and I haven't found a library that includes the functions to access the pins
functionality. Is there any documentation you could suggest me to do that please?

Re: Using gpio in MPC8309

[Gary Thomas]

On 2012-07-12 18:08, Gal Afel wrote:
> Hello,
>
> I just got a TWR-MPC8309 from Freescale running Embedded Linux OS. The kernel
> version is Linux 2.6.11+pq3 patches and the kernel preconfig file is
> linux_2.6.11_mpc8548_cds_def.config.

That's a really OLD kernel, plus it doesn't seem to match your hardware.
MPC8309 is a very different beast from the MPC8548.

>
> I'm new to processors running Linux and I'm having a hard time trying to
> understand how can I program the GPIO and use them. Is there a tutorial or any
> documentation you could provide me to get started on accessing the processor
> pins please?
>
> I'm using CodeWarrior Development Studio for Power Architecture version 10.0.2
> and I haven't found a library that includes the functions to access the pins
> functionality. Is there any documentation you could suggest me to do that please?

Try looking at the Linux kernel source file 'Documentation/gpio.txt'

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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