Activity

From 12/05/2013 to 01/03/2014

ND 10:46 AM FPGA Development: RE: I/O voltage: No problem, it can wait a while.
Sounds like the SOM may have been catered for. Any thoughts on the dev kit or do you need to wait for the designer to get back?
Thanks.
Nigel. Nigel Doe
MW 09:03 AM FPGA Development: RE: I/O voltage: Hi Nigel,
The best guy to answer this question is on break this week and a good chunk of next week, can you wait for an answer?
Looking at the schematic, VCCPD3B4A is driven by a small compare/mux circuit that selects 2.5 V if VIO_... Michael Williamson
ND 08:15 AM FPGA Development: I/O voltage: I would like to interface the MityARM-5C SX dev kit to an existing piece of equipment for evaluation purposes, however this equipment uses 3.3v I/O. Is seems from the schematic that the bank I/O for the FPGA signals on the HSMC interface... Nigel Doe

12:23 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
We figured it out last week. So we are fine with this for now.
Jack Anonymous

05:17 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
I'm still confused about this. Would it be possible to provide an example of multiple packets?
For example two packets each with a counter.
Thanks!
Jack Anonymous

DV 06:36 PM FPGA Development: RE: HPS Memory Controller: The descriptors are pushed onto a descriptor FIFO that the dispatcher reads from to start each transaction. So with setting the go bit, the descriptor will be written on to this FIFO.
To send multiple packets you will have to push mul... Daniel Vincelette
05:18 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
Is there any timing diagram with the SGDMA? I want to control some of the signals directly in the FPGA.
Thanks!
Jack Anonymous
04:49 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
I'm confused about this, does the Go signal go to "0" after each transfer such that I have to toggle it back to "1"?
I tried doing that but it didn't work.
Could you provide exactly what needs to be done to send multiple... Anonymous
DV 04:28 PM FPGA Development: RE: HPS Memory Controller: Yes, you need to set the go bit so the dispatcher knows that the descriptor is ready to be read.
Dan Daniel Vincelette
12:17 PM FPGA Development: RE: HPS Memory Controller: Hi again,
Just reading through the document. Do I have to set GO to '1' each time I update the descriptor?
Thanks!
Jack Anonymous
12:12 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
I'm changing the write address in the descriptor in the VHDL. But it's still only writing to the first address and not writing to the subsequent address that I changed to. Is there something else that I have to do to update th... Anonymous

DV 03:53 PM FPGA Development: RE: HPS Memory Controller: Hi Jack,
Park Writes – When set the dispatcher will continue to reissue the same descriptor to the write
master when no other descriptors are buffered.
Yup, the address is part of the descriptor along with control signals.
For ... Daniel Vincelette
03:37 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
What's parked write? Is that just writing to one address only?
Is the descriptor like an address line?
For our project, we have a signal (Data Ready) and whenever it goes to zero, there is a 16 bit data that comes in. I ... Anonymous
DV 02:26 PM FPGA Development: RE: HPS Memory Controller: Hi Jack,
Each packet needs its own descriptor, unless you are using parked writes. The descriptor is what tells the SGDMA component where to write that packet to, so the second packet will stall until another descriptor is pushed onto... Daniel Vincelette
02:15 PM FPGA Development: RE: HPS Memory Controller: Hi,
Just a question with regarding sending these data as a package.
I know that the data in the package will be stored consecutively starting from the starting address.
But if that package is ended, and I start a second package ... Anonymous

DV 03:14 PM FPGA Development: RE: HSMC to GPIO: Hi Jack,
The 5CSX dev board follows the Altera defined pinout for HSMC so that should work.
Dan Daniel Vincelette
03:00 PM FPGA Development: HSMC to GPIO: Hi,
Is HSMC on base board laid out the same pin out as this particular Terasic daughter board (this is what Altera follows in their layout)
I attached the manual for the daughterboard.
Thanks!
Jack Anonymous

06:14 PM FPGA Development: RE: HPS Memory Controller: Beautiful Work! Thank you so much!
Jack Anonymous
05:57 PM FPGA Development: RE: HPS Memory Controller: O of course! Can't believe something simple like that slipped my mind.
Thank you so much! Hope this works!
Jack Anonymous
DV 05:51 PM FPGA Development: RE: HPS Memory Controller: Hi Jack,
1) Hmm, I believe that error is from qsys generate not being run. Let me know if after running generate if that error still comes up.
2) Yes that is correct, it just needs follow the "Avalon Stream Standard":http://www.alt... Daniel Vincelette
05:35 PM FPGA Development: RE: HPS Memory Controller: Hi Dan,
A couple of issues:
1. I am having trouble compiling the code. It's returning warnings and errors like such:
Warning (125092): Tcl Script File mityarm_5csx_dev_board/synthesis/mityarm_5csx_dev_board.qip not found
Error ... Anonymous
DV 03:34 PM FPGA Development: RE: HPS Memory Controller: Jack,
I have created a new wiki section and have added the hps ddr example there. "LINK":http://redmine.criticallink.com/redmine/projects/mityarm-5cs/wiki/Writing_to_HPS_Memory
Dan Daniel Vincelette

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Mity CPU Platforms » MitySOM-5CSX Altera Cyclone V