Adding the USB104 A7 board to Litex
In this blog we already talk about Litex in this post, and also we used Litex to run Linux in a SoC in this post. If we remember the flow, the steps are very simple. We need to execute some…
Division algorithms in FPGA.
Digital signal processing involves many different operations. Although there are some algorithms with a high level of digitalization, they can be computed only with additions and shifts, others require specific hardware. For example, we need multiplicators to use an IIR…
Using a digital oscilloscope.
When we is studying a degree related with electricity (electronics, electronics, electrical, communications, …), one of the elements which is very familiar to us is the oscilloscope. I remember when I started my electronics course (here in Spain we call…
Running Petalinux on a Microblaze soft-core.
You can do everything with an FPGA. I have used this sentence many times in my job, and most of them followed by, its all a time matter. Also, in this blog I have said many times that FPGA are…
Frequency warping using the bilinear transform.
The process to design a IIR filter is always the same. First of all we have to design the design the filter using its continuous transfer function, then, once the natural frequency of the filter, the order and the quality…
Exploring the Cordic algorithm.
Many years ago, the processors were slow, and they only can compute additions and, spending some time, multiplications. Calculating division was a hard task, and no mention trigonometric operations and square roots. As low resources makes the people smarter, in…
FilterBuilder v0.1
As I said in other posts, I am FPGA designer in a company. My functions are, between others, implement the signal acquisition and apply different digital signal processing algorithms, to obtain a signal that the FPGA can use to control…
Running Linux on a Litex SoC.
That FPGA are very versatile devices is something that everybody knows, and the fact that you can implement inside many different processors makes the FPGA very interesting devices for test different processors architectures. In this blog we already saw the…
Proportional – Integral regulator. Implementation and verification.
In the last post we talked about digital control loops. In short, we talked about the elements that we can find in digital, or analog, control loops. The first of them is an element to acquire the difference between the…
Digital control loops. Theoretical approach.
In this blog I have tried to show you different tools, usually in the field of digital signal processing, so you can select the correct tools for your projects. This time we will use the tools that we have used…