In today’s fast-paced world of embedded systems, flexibility and adaptability are key. That’s why we’re excited to unveil our latest innovation at SEGGER: Embedded apps, similar to the ones on your phone (only less visible and much smaller), running on your embedded system.
Author: Rolf Segger
J-Link PRO PoE powers the SEGGER test farm
We have been using automated tests on hardware in the Flasher and J-Link departments for some time. But now with the new J-Link PRO PoE, we felt it was time to get some of the evaluation boards out of the cabinets and build a proper test farm. We are selecting the most popular boards so […]
CPU Design at SEGGER
CPU design is not normally what we do. But: We actually have 2 CPU designed and in use, an 8-bit and a 32-bit CPU. In this article we look at our 32-bit CPU, or rather how we are creating an enhanced version of it with very high Code Density
Size matters – Comparing tool chains and CPUs
Many people think that in today’s world, the size of a program does not matter. In many cases, that is not true, especially in the world of embedded computing systems. I explain why and introduce a benchmark that makes it possible to easily compare the code-size efficiency of different tool chains (Compiler, assembler, linker, run […]
C++ pitfalls – Memory allocation from interrupts
Modern C++ programming very much abstracts what is happening “under the hood” – i.e. what code the CPU is actually executing. This is nice for the programmer … if it works well. Unfortunately, C++ also introduces a stability problem in embedded systems. Many programmers are unaware of this problem. This post gives some background, explains […]
Hacking emSecure?
On October 24th of 2021, we were contacted by the Moscow based security company BI.ZONE Research Lab. BI.ZONE is a security research firm, checking software and computer systems for vulnerabilities. They were trying to find weaknesses in J-Link.
Every byte counts – Floating-point in less than 1 KB
How expensive in terms of code size are floating-point operations if the CPU does not have an floating-point unit (FPU)? In this article, I will investigate, based on Embedded Studio for ARM and a generic Cortex-M3 device, how big (or small) an entire application using basic float operations, add, sub, mul, and div, can be. […]
Every byte counts – Smallest “Hello world”
When searching on-line for small C-programs, there seems to be a lot of confusion about what is doable and what is not. There are a lot of posts wondering why even for minimal programs such as “Hello world” applications are so big, but not many explanations or fixes. I will show how to make a […]
Every Byte counts – The 100-Byte Blinky Challenge
I decided to put Embedded Studio to the test: How little flash memory could be used on a typical Cortex-M Microcontroller to toggle an LED?
Profiling and Code coverage on RISC-V using simulation
We recently licensed our Floating point library for RISC-V to a large international corporation. They asked not only for our functional verification suite, but also for a verification of the verification suite. A code coverage report showing that the entire code had been executed. While we know that all lines and every instruction have been […]