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Re: printf/gets/etc not working


On Mon, Aug 16, 2010 at 1:14 PM, Sergei Gavrikov
<sergei.gavrikov@gmail.com> wrote:
> On Fri, 13 Aug 2010, Slide wrote:
>
>> I am bringing up eCos on a custom internal board,
>
> ? ? ? ? ? ? ? ? ? ? ? ?^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Hi Slide,
>
> So, does this mean that you have some new untested H/W and and a fresh
> eCos port for it or your port closely depends on some known target in
> eCos World?
>

Yes, it is a board that has a PXA9XX part, which is similar to PXA3X0,
which is similar to PXA2X0.

>> I have diag_printf working just fine,
>
> ? ? ? ? ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Good news, at the least you managed a polled (non-interrupt driven)
> diagnostic *output* for the UART, and as you say that diag_printf()
> works smoothly, then try the simplest diagnostic *input* with
>
> ?HAL_DIAG_READ_CHAR(_c_) macro

I'll give this a shot.

>
> BUT,
>
>> I only have one serial port on the board,
>
> ? ?^^^^^^^^^^^^^^^^^^^^^^^^^
>
> It's good to know, How you download and run your test printf(), gets()
> application? Do you share diagnostic and debug channels on that UART or
> use an alternate communication channel for testing (debugging)? If you
> use GDB remote protocol via that serial port..., well I won't guess,
> write a bit, please, about your startup and debug environment.

I load my image onto a microSD card. The PXA9XX supports loading
images from SD, so I have it load the image into RAM and then branch
to the load location to start running. Currently (until I get some
other method going) I am just removing the microSD from the system,
reprogramming the image and then putting it back in the system. I
haven't not developed an SD stack yet for loading things to the card
over serial port, or some other means.

>
>> but I can't seem to get printf or gets to work correctly.
>
> Let's leave this a while, especially gets().
>
> Sergei
>


Agreed, I would assume that if printf was working, then gets/etc would
probably be working as well.

Thanks,

slide

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