Recently I spoke about a LZ4 decompression routine I converted from 6502 code into a Arm Cortex-M0 code. I could not find my decompression routine, so I decided to convert it again. The result is in this…
Arm Cortex-M0 assembly programming tips and tricks
In this post I show you some tips and tricks when writing assembly code for Cortex-M0 and Cortex-M0+.
Useful assembler directives and macros for the GNU assembler
In order to keep my assembly-related documents easy to read and understand, I've written some macros for the GNU-assembler (also known as GAS).
Do you find 3D programming boring ?
For a long time, I've not really been interested in 3D programming.(Well, I've done some minor OpenGL programming many years ago, but I must admit that I'm more of a dev-tools programmer)After watching…
Arm Cortex-M3 and later: Basic integer math operations, 32-bit
This is the beginning of a 5-part series of articles on how to write some quick integer and fixed point math in assembly language for the Cortex-M3, Cortex-M4 and Cortex-M7 microcontrollers.
Unlocking the STM32F4 Discovery board with OpenOCD
I haven't been able to flash-program the board because my only available tool is OpenOCD; I have no other options. Fortunately, OpenOCD is scriptable, so let's make it work.
Writing your own startup code for Cortex-M
This post is designed as a tutorial in how to write assembly code for the Cortex-M series.
A fairly quick Count Leading Zeroes for Cortex-M0
Cortex-M3 and later have a CLZ instruction which counts leading zeroes. But Cortex-M0 does not have an instruction for this. Instead you must use a provided subroutine or write your own. Let's try rolling…
Practical example: Why use an ARM microcontroller in a device
For 3 years, my Mac has been very, very, very (and I mean very, very, very) sluggish.Typing on the keyboard would give me approximately 1 character per second.Sometimes I even had to resort to using my…
Can you build your ARM circuit and test it in 10 seconds ?
What exactly is rapid prototyping ?Sometimes we get some great ideas; some ideas are forgotten due to it took too long to build other ideas.But if we could just build our circuits as quickly as they came…
The features I would like in my ARM processor (part 1)
Originally this blog post was intended to be all-in-one, but I was suggested to split it into smaller parts.So what I'll do, is that I'll mention the features I'd like in my ARM processor, one at a time…