MatLab CRC8 SAE J1850

-

 I got unexpected request for help of porting  CRC8 SAE J1850 to MatLab code. So I decided to publish it also here if anyone else needs it.

Code is here:

Screenshot from MatLab online:


I hope this can help you. 

Best Regards,
Igor Mišić

Comments

Post a Comment

Popular posts from this blog

AUTOSAR and CRC calculation

-
Image
If you find yourself reading AUTOSAR document Specification of CRC Routines you are probably looking for a solution on how to implement it in your code. This is short instruction without explaining how CRC works. It includes working CRC code with examples from the mentioned documentation. Explanation of CRC8 CRC 8 it means, the polynomial of CRC is 8 bit long.  Explaining chapter 7.2.1: CRC result width - it is the return value, it says it is 8 bits long Polynomial - this value is used to calculate CRC. In this case, it is 0x1D Initial value - CRC calculation start with this value. It is usually all F's or zeros.  Input data reflection - it says if the data which you want to do CRC need to be reflected or not. Example of data reflection: hex: 0x73 or binary: 1110011, reflected value is: 1100111 or hex 0x67 Result data reflected - same as input data, but the only result is reflected XOR value - result value need to be XOR-ed with this value before...
Read more

PX4 development - building, flashing and debugging without debugger (Arduino developers style)

-
Image
 This is a short tutorial that will explain how to build PX4 Autopilot, flash and debug it at the PX4 FMU (Flight Management Unit) without a debugger. Everything in this tutorial is tested and reproduced at Kubuntu 22.04 LTS (It works the same for Ubuntu as well). Preparation Let's start with cloning PX4 Autopilot > git clone https://github.com/PX4/PX4-Autopilot.git After the repository is cloned make sure you initialize all submodules. You would like to keep using this GIT commands when you jump between branches in PX4, otherwise, you can experience issues like missing modules while building. > cd PX4-Autopilot > git submodule sync > git submodule update --init --recursive And that is it we are almost ready to build our PX4 firmware. You need to know what board (FMU) you possess. Let's guess you have Pixracer. Pixracer is fmu-v4 board. Figure 1 - px4_fmu-v4 board source tree
Read more

PX4 development - building, flashing and debugging with debugger (like a PRO)

-
Image
 This is the next tutorial that brings a bit more expertise into PX4 Autopilot debugging from an embedded software developer perspective. It will explain how to use J-Link debugger to debug PX4 Autopilot code in Eclipse IDE. If you didn't already see the previous tutorial, please go there, first phase of PREPARING is mandatory to be done so we can continue here. Link to previous tutorial: https://igor-misic.blogspot.com/2022/06/px4-development-building-flashing-and.html Everything in this tutorial is tested and reproduced at Kubuntu 22.04 LTS (It works the same for Ubuntu as well).
Read more