Re: [ECOS] Problem with receive/can_send functions

[mkhoyila at uci dot edu]

Thanks for the help.

My application is just print "Hello world " which it does just fine. My
goal is to have ping work so I could benchmark the performace of eCos vs
Linux.

1) Since I'm new to device driver/eCos, I followed the code in if_atlas.c.
I do not think that I am setting my XXXX_int_vector to rxIrq properly,
since eCos does not recognize the interrupt generated by DMA. Is there any
other thing I need to do beside what is in if_atlas.c? Is there any other
file that communicates with eCos modules to let it know that there is an
iterrupt and it should call XXXX_isr? I only saw if_atlas.c and saa9730.h
files.

2) When I initially bring up the board and load eCos, I can ping the board
1 or two times. I captured the ping reply and it has my board's mac
address. However, my XXXX_recv function is never called (I have debug
statements right at the begining of all XXXX_ functions). How is this
possible?

Any help is appreciated to guide me thru.



> On Thu, 2005-08-04 at 20:51 -0700, mkhoyila@uci.edu wrote:
>> Hi everyone
>>
>> I have coded an ethernet driver for mips dsl board. I have following
>> issues:
>>
>> 1) XXX_can_send  function is being repeatedly called. There is no I/O
>> activity that I generate. Is this normal?
>
> This function will be called as long as there are data [packets] waiting
> to be sent out over the interface.
>
>> 2) On receive side, I notice that DMA engine sets the status bit that
>> buffer has received packet, but eCos never calls my XXXX_receive
>> function.
>> for that matter, it  does not even call XXXX_isr or any other related
>> functions prior callig XXXX_receive. It seems that it does not recognize
>> the interrupt. Any idea?
>
> This is a serious problem and goes together with the transmit issue you
> mentioned above.  You need to figure out why your device is not
> presenting and interrupt and if it is, why the ISR is not being called.
>
> Are you sure that interrupts have been enabled?  What sort of
> application are you running?
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
>



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