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…
Category coding
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…
Building a SoC with Litex.
There are many cases where we will need a processor inside our FPGA. In my case, soft cores are very useful when I have to implement in the FPGA a manager for an external device using high level interfaces like…
Implementing a dual core processor in FPGA.
Few years ago, microprocessors manufacturers competed to get the faster processor. High speed means more tasks can be executed in the same amount of time, but also, means higher power consumption. To improve this, the voltages of the core starts…
Using PCIe in Xilinx 7 Series.
When we look into communicating an FPGA with a computer, the first interface that we can find is UART, but this interface has several limitations in terms of speed. In order to transfer high amount of data between the CPU…
Audio equalizer based on FIR filters.
Digital signal processing can be used in almost all engineering field, from seismology, to obtain the distance where an earthquake has been generated, to data science, but these areas use digital signal processing as a way to obtain the real…
Using IIO to manage an ADC from Petalinux.
Manage 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,…
Using FPGA Data Capture to debug a design.
On the project developed on the last 2 posts, to verify the behavior of the filter, we had used the data acquired from the ILA. Data was processed on MATLAB with a script where we read the csv, and verify…