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 <crazylinux...@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 <gav...@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-boun...@etherlab.org] *On >> Behalf Of *Ruika You >> *Sent:* Friday, 5 May 2017 02:45 >> *To:* etherlab-users@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! >> >> >> > >
_______________________________________________ etherlab-users mailing list etherlab-users@etherlab.org http://lists.etherlab.org/mailman/listinfo/etherlab-users