[etherlab-users] how to implement EoE example?

[Ruika You]

Thanks!
I read beckhoff EL6614 document carefully again.
As I understood, data is transferred by mailbox. So can I just use SDO to
send and receive data?

Refer to <*https://infosys.beckhoff.com/english.php?content=../content/1033/el6601_el6614/2356692619.html&id=
<https://infosys.beckhoff.com/english.php?content=../content/1033/el6601_el6614/2356692619.html&id=>*
>.

On Fri, May 5, 2017 at 10:52 PM, Ruika You <crazylinuxcnc at gmail.com> wrote:

> Thanks for your reply.
>
> You mean I no need to write kernel module for EoE, even though EoE is
> kernel module of ethercat master.
>
> I found some useful information from follow post:
> <*https://www.mail-archive.com/etherlab-users@etherlab.org/msg01559.html
> <https://www.mail-archive.com/etherlab-users@etherlab.org/msg01559.html>*>
>
> As Thomas Bitsky, Jr. comment:
>
>> void
>> send_callback(void *cb_data)
>> {
>> ec_master_t *m = (ec_master_t *) cb_data;
>>         down(&master_sem);
>> ecrt_master_send_ext(m);
>>         up(&master_sem);
>> }
>>
>> void
>> receive_callback(void *cb_data)
>> {
>> ec_master_t *m = (ec_master_t *) cb_data;
>>         down(&master_sem);
>> ecrt_master_receive(m);
>>         up(&master_sem);
>>  }
>>
>> If they are not in the program and activated by ecrt_master_callbacks, then
>> there is no lock-up. Of course, EoE doesn't work.
>>
>>
> I will add code into user space application and give a try. But I confused
> that how can I send data and receive data if there is no call back function?
>
> Thanks!
> -chengxi
>
>
> On Fri, May 5, 2017 at 7:27 AM, Gavin Lambert <gavinl at compacsort.com>
> wrote:
>
>> I don’t use EoE myself, but as I understand it the kernel component of
>> the master (which exists even if your application is only in userspace)
>> creates regular Linux ethernet devices for the EoE ports of the slaves, and
>> takes care of the message relaying itself.  So your application doesn’t
>> need to do anything special and the userspace application (or any other
>> process on the PC) can send packets to those devices just like any other
>> network interface.  You might need to assign it a static IP before regular
>> apps will talk to it, though.
>>
>>
>>
>> *From:* etherlab-users [mailto:etherlab-users-bounces at etherlab.org] *On
>> Behalf Of *Ruika You
>> *Sent:* Friday, 5 May 2017 02:45
>> *To:* etherlab-users at etherlab.org
>> *Subject:* [etherlab-users] how to implement EoE example?
>>
>>
>>
>> Dear all,
>>
>>
>>
>> Recently I am trying to implement EoE and do read all threads related EoE
>> in this mailing list.But I  still do not understand well.
>>
>> First of all, If I am not wrong EoE only works in kernel space?
>> Unfortunatelly, currently my application works in user space. So in this
>> case, I had better to run two master one in user space with current
>> application, another one in kernel space with EoE?
>>
>>
>>
>> Secondly, if anyone have experience with EoE, would you mind share one
>> example?
>>
>>
>>
>> Now I can start EoE and ping through eoe between two machines. I am not
>> clear how to send data and receive data, like tty serial example? but
>> El6614 does not have .xml file.
>>
>>
>>
>> Any hints are appreciated.
>>
>>
>>
>> Thanks very much!
>>
>>
>>
>
>
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