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Browsing All posts tagged under »python«
EE & CS: A JTAG/XSVF Library for Arduino
Marcelo Jimenez wrote an Arduino library to apply XSVF patterns on a JTAG interface using the Arduino as a JTAG adapter. It is especially useful for FPGA/CPLD programming. In the example provided in the GitHub repository, the XSVF file is passed through the serial port using a client-side python script. Some time ago I started some similar […]
Arduino Ethernet shield and Python socket
June 14, 2015
I started playing with an Ethernet shield for Arduino that I bought at a faire. I noticed that the shield itself is not original, but it’s a clone of the Arduino Ethernet Shield version 5.0, also identified as revision 2. The shield provides Ethernet connectivity and has an SD card slot to provide non-volatile memory […]
JTAGduino: JTAG connection using Arduino
August 10, 2014
One of my personal project ideas is JTAGduino: using Arduino as a JTAG adapter. I wrote a couple of posts about it, and today I managed to connect it to a real target. All the code that I used here is present on my JTAGduino GitHub repository. I have an Olimex STM32-P152 board, and I […]
Digital Signal Processing course on Coursera ended
July 20, 2014
I attended the last session of Digital Signal Processing course offered by the Polytechnic of Lausanne (EPFL: École Polytechnique Fédérale de Lausanne) through Coursera.org. The course is presented by Professors Paolo Prandoni and Martin Vetterli. I already knew some of the topics from University, but it was ten years ago and I wanted to refresh […]
Analyzing C source files dependencies in a program
November 24, 2013
This post shows an approach to draw graphs representing the dependency of C source files and modules throughout a complete program. The implementation of this method uses the functionalities of GNU ld to create a cross reference table, then NetworkX to create a graph and Graphviz to visualize it. The approach is applied to a simple example and a real embedded application (U-Boot).
JTAGWhisperer: Arduino as a XSVF programmer
February 5, 2012
Dangerous Prototypes features an interesting project, that is similar to my JTAGduino idea. JTAGWhisperer is a solution to program FPGAs and CPLDs using Arduino and a small client-side Python script. It reads files in the XSVF format, which stands for Xilinx Serial Vector Format and is one of the formats used to program Xilinx chips. […]
Ongoing project: Arduino as a JTAG adapter
January 7, 2012
I started a project to try to use Arduino as a JTAG interface to perform debugging, programming and scans. The objective is to have a setup like the following diagram: The complete project should include: Arduino sketch OpenOCD integration Python API Arduino shield with common connectors etc. In particular the shield should have: Level shifters between […]
PyPy as a faster alternative for Python
June 7, 2011
It came to my attention today that there’s an alternative interpreter for the Python language which is faster and often viable: it’s called PyPy and uses Just-In-Time compilation to execute Python code. Just-In-Time compilation is a technique that is used successfully in many projects: the .NET Framework, Java, QEMU, … and it has also been […]
Coding styles comparison in the Open Source Software world
December 28, 2010
While looking for existing C coding standards I discovered that the GNU and Linux projects officially suggest very different styles. Inside the Linux kernel documentation, Linus Torvalds goes so far as to mock GNU coding standards: First off, I’d suggest printing out a copy of the GNU coding standards, and NOT read it. Burn them, […]
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Freedom Embedded by Francesco Balducci is licensed under a Creative Commons Attribution-Share Alike 4.0 License.
Freedom Embedded 
September 2, 2015
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