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Altera_Forum
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13 years ago

Simple Socket Server not responding

Hi, All, I'm a newbie in FPGA and embedded designs (and new to this forum as well). My system has a NIOS-II, TSE MAC, ETX PHY and external SSRAM. I've reached a point where the Simple Socke...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Hi, Guys,

I wanted to update you all that I found the problem:

The connection between the SGDMAs and memory was wrong.

I'm using an external SRAM which is not supported by the default controllers shipped with Qsys, so I created my own using the Tri-State Controller.

I have 4 external chips, so I have 4 TS controllers, all of them

connected to the NIOS.

The SGDMAs of the Ethernet MAC should also be connected to the memory, of course: but I connected them to Controller 0, and for some reason the software was trying to R/W to Controller 1. I discovered this when I checked (using SignalTap) the actual addresses the SGDMA were trying to reach each time a Ping is received.

Anyway, I changed the memory connection to Cont. 1, and everything work.

Thanks to all those who gave advices, have a great day :-)

Ran