PRU examples are half there

[Mark A. Yoder]

I'm starting to build up some remoteproc-based examples for the PRU and found a bunch of examples here:  /usr/lib/ti/pru-software-support-package/examples.

But the examples are only half there.  That is, the code is present for the PRU side but not the ARM side.

For example, PRU_PRUtoARM_Inaterrupt shows the PRU code to send an interrupt to the ARM, but there is no example code for the ARM side.

Anyone know where the ARM code is?

Thanks...

--Mark

[Jason Kridner]

Did you look at http://git.ti.com/pru-software-support-package ?

--
For more options, visit http://beagleboard.org/discuss
---
You received this message because you are subscribed to the Google Groups "BeagleBoard" group.
To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/9c16071c-5e4e-4f31-8525-80607da71f74%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Mark A. Yoder]

Yup, all I see is the PRU code, no ARM code.

--Mark

[John Syne]

https://git.ti.com/rpmsg/rpmsg/blobs/rpmsg-ti-linux-4.4.y/samples/rpmsg/rpmsg_client_sample.c

Regards,

John

To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/dd58c3be-b544-49a2-b869-b82e9c27753e%40googlegroups.com.

[Mark A. Yoder]

John:

  That's a great help.  Is the documentation for the example?

--Mark

[Mark Lazarewicz]

I remember seeing both sides of the code for this interrupt example but it was for bare bone NOT linux.  Its been 6 months and I'm not sure if that helps you. My focus/interest  is primarily the chip level(register level) not API(remote proc).

 If it your interested I could do some digging. I want to say I saw it on a wiki for omap l138 I was working on which is ARM + PRU + DSP

Sent from Yahoo Mail on Android

--

[John Syne]

Yeah, I haven’t worked on this for a while, but from what I remember, the ARM side sends out 200 ping messages to the PRU and the PRU responds to each interrupt with a reply, which the ARM side prints out. Look for the PING example for the PRU, load the firmware and then load this Kernel Module. 

Regards,

John

Regards,

John

To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/807cdbb4-3cf2-4086-ae1a-319ff4f5d4e1%40googlegroups.com.

[John Syne]

BTW, I seem to remember that I had to modify the code to work because RPMSG use to use mailbox to exchange messages, but that was changed to use Interrupts.  I believe Jason Reeder from TI helped me get this working. 

Regards,

John

To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/807cdbb4-3cf2-4086-ae1a-319ff4f5d4e1%40googlegroups.com.