Hi All!
We have spent the last few months playing with the Parallella and trying to make several boards work together. We came across several problems that we could use some help solving.
At first we followed this post: https://parallella.org/forums/viewtopic ... r&start=10
with the old HDMI Build, and connected our boards this way: (link attached in case you cannot view the image)
https://drive.google.com/file/d/0B5uBXg ... sp=sharing
Then we made our own new PCB connector:
https://drive.google.com/file/d/0B5uBXg ... sp=sharing
The problems we came across are the following:
1. Hardwiring the core-id using a jumper does not seem to work for the headless builds it seems. When ever we try to run the Hello_World example after changing the hdf and xml file the board crashes and has to be rebooted.
Any clues as to why this happens or how to fix it?
2. We have been trying to use an interrupts based mailbox program to have communication between the boards up and running, and it only works with esdk.2015.1. When trying to use the new library with the HDMI build nothing seems to work at all. We read here : viewtopic.php?f=13&t=3073 that there are some missing features on the old FPGA build, but we would like to hear some more details about it.
3. changing core ID and Speed: As we plan to use our connector, we need to change these features without the comfortable pins that come with the Porcupine. We are able to write to the FPGA system Registers, but they don't seem to affect these two issues at the moment on both the headless and HDMI versions. Any ideas on how to tackle the problem,
or details on progress with the FPGA registers?
Thanks a lot!