Category Archives: Stuff

My first baby steps with the XuLA 50 board and Xilinx ISE on Ubuntu 11.04

1 week ago I didn’t know what FPGAs are, but yesterday I received my XuLA 50 board and I started with this great tutorial.

I got my LED to blink first because I had some GLIB problems and I was not able to simulate the design. But I found if I copy some lib files from my system over the the ISE install and do some kind of clean all generated project files it solved the issue…

I was in this (../Xilinx/13.2/ISE_DS/ISE/lib/lin64) directory and I copied and did override libstdc++ with this command: cp /usr/lib32/libstdc++.so.6.0.14 libstdc++.so (all three)

It would be nice if I could run the XSTOOLS also under Ubuntu, but it will not work with Wine. Right now I use a VM. I think there was a Linux download, but the link is broken.

Powerful but most inexpensive SDR (software defined radio) quest

Looks like there are a lot of open source SDR related things on the web. But the more powerful SDR hardware is expensive. The USRP is part of the GNU Radio project and it is $700 another radio with this price tag is the QS1R.

Now the question is, would it be possible to connect some of the components found in those devices modular together.

Looks like the LTC2208 is used in a lot of projects like this for ADC, the price for this hardware alone is $70 to $160 depending on the version and pieces. I’m not sure if there is a breakout board for this chip?

Another component found is a FPGA,  the XuLA project has  FPGAs between $39 (50,000), $79 (200,000)and $200 (1,000,000). VHDL is required to use the FPGA, I did order a $39 version – but I never used FPGAs and VHDL. I found this tutorial I will may use to learn something new.

A micro controller is also found on those board.

A onboard DAC could also be used to listen directly.

Gigabit Ethernet, USB or some other fast method to transfer all the data to the PC. Could SATA be used? Or firewire?