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Managing AXI4-Stream from MATLAB.

For developers who work with FPGA and digital signal processing, and for signal processing, I mean audio signals, video signals, and radio signals, … sure they have used the AXI4-Stream protocol. The AXI4-Stream protocol is used as a standard interface to connect components that want to exchange ...

Published by P.Trujillo on Apr 5, 2021

Development boards I use.

Many times, developers who want to take their first steps in the world of FPGAs to ask me about a development board that begins to test their first designs. From the newie point of view, I understand that seeing a led blinking can be very satisfying, but from my point of view, is more interesting...

Published by on Mar 22, 2021

Using IIO to manage an ADC from Petalinux.

Managing an ADC is something that any engineer dedicated to signal processing has to do very often. This task, in general, use to be no much complicated, unless you are using a high-speed ADC with LVDS interface or something similar, but that kind of ADCs are not the scope of this post. In this p...

Published by P.Trujillo on Mar 8, 2021

Connecting an SSD to Zynq MPSOC.

Devices like Xilinx Zynq or Microchip PolarFire give us the possibility to mix in a single design a high-level OS like Linux and a fast device like FPGA. For signal processing, or even data science, is very interesting to acquire an event at rates of several tens of mega samples per second, and t...

Published by P.Trujillo on Feb 22, 2021

Using HDL Coder WFA to implement a distortion effect.

If you have read some posts on this blog, you can see that FPGAs are a very good choice if you want to develop some digital signal processing algorithm, but for some reason, maybe because they are (a bit) more complex than DSP, FPGAs they are not as popular as them. The advantages of using FPGA i...

Published by P.Trujillo on Feb 8, 2021

Using FPGA Data Capture to debug a design.

In the project developed in this post, to verify the behavior of the filter, we used the data acquired from the ILA. Data were processed on MATLAB with a script where we read the CSV, and verify input and output signals. This process works, but MATLAB gives us the choice to integrate the verifica...

Published by P.Trujillo on Jan 25, 2021

Using DSP48E1 Slice.

A few years ago, FPGAs were used almost exclusively for communication systems. On the other hand, DSPs are used to execute digital signal processing algorithms. The reason is the hardware components that were integrated. FPGAs, were based on flip-flops, LUTs and general logic, unlike DSP which wa...

Published by P.Trujillo on Jan 11, 2021

Application notes

[AN001] Designing from zero an IIR filter in Verilog using biquad structure and bilinear discretization.

Filtering is likely the most common DSP algorithm that any embedded engineer has to design, no matter it they are developing for an STM32, or TI DSP or, of course, en FPGA. Filtering is such important because the majority of the applications are connected to the real world, so they need to captur...