Time is passing fast, and many components have been updated to make the compatible with the NXP Kinetis SDK V2.0. As a highlight, besides of FreeRTOS the following components are now usable with the NXP Kinetis SDK:
With Processor Expert projects it is very easy to change the heap and stack size: There is a setting for this in the Cpu component settings, under the ‘Build options’ tab:
As there is no Processor Expert in the NXP Kinetis SDK V2.0 (see “First NXP Kinetis SDK Release: SDK V2.0 with Online On-Demand Package Builder“), how to do the same in a SDK V2.0 project?
The world is changing, and the say is “change is good” :-). In the software and API world, change very often means that a change results into something broken. So I had battled with semihosting working on the NXP Kinetis parts, only to find out that it does not work any more with using the latest version 2.0. The semihosting output e.g. with P&E debug connection remains empty:
So how to fix this?
It has been already two months after the Feb 2016 release, and so much things are going on, so a new release was overdue. Today I have released a new version of the McuOnEclipse components on SourceForge with the following main changes and features:
- Kinetis SDK v2 with Processor Expert: Now many components can be used even with the Kinetis SDK v2.0 even with the Kinetis SDK not having Processor Expert included.
- Updated Segger SystemViewer to v2.32a with post-mortem and static buffer support
- Updated Segger RTT to v5.10u and fixed an issue with interrupts on Cortex-M4
- FreeRTOS Thread Awareness with OpenOCD
See readme on SourceForge for the full history.
For my classes I had so far asked the students to install the Kinetis Design Studio (KDS) v3.0.0 and then apply several updates and upgrades available. NXP has now released the v3.2.0 of their KDS (Kinetis Design Studio):
The v3.2.0 is including all the 3.x.x updates in a single installation which makes things easier to start with. And it now works for Mac OS X “El Capitan” and the latest GNU ARM Eclipse plugins :-).
I’m using the FRDM-KL25Z in my classes, and that board is very popular: low price (<$15), reasonable features (48 MHz ARM Cortex M0+, 128 KByte of FLASH, 16 KByte of RAM), and many tutorials elsewhere and on McuOnEclipse :-).
For the next (Fall) semester I’m looking for alternative boards, and one is the Freescale (now NXP) FRDM-KL27Z:
I’m exploring the Kinetis SDK v2.0 (see “First NXP Kinetis SDK Release: SDK V2.0 with Online On-Demand Package Builder“). For this, I’m using the ‘standard’ way: blinking the LED on the board 🙂
I’m using Processor Expert components for nearly every Freescale (now NXP) projects: for S08, S12, ColdFire, DSC and especially all the different NXP Kinetis devices. Not only because it makes software development fast and easy and allows re-use of software, but as well because Processor Expert has a good way to pack and distribute software components. Unfortunately Processor Expert is not any more included for the new Kinetis devices (see “First NXP Kinetis SDK Release: SDK V2.0 with Online On-Demand Package Builder“). So I have looked into an alternative and hopefully vendor neutral way to build and distribute software packages using CMSIS-Pack.
New in this release:
- Segger SystemViewer: Upgraded to V2.30, added stack high-water mark
- Segger RTT: fixed BASEPRI issue on Cortex M4 for critical sections
- Utility: Fixed issue with Utility module and Kinetis SDK (usage of ‘byte’)
- USB CDC: property to specify USB device current usage, new status getter functions.
There are plenty of different software packages available for microcontroller these days from all the silicon vendors. Finding a good software package is one challenge, getting what I really need is another one. Freescale is now part of NXP since December 2015, so this is probably the first release of the former Freescale part now as NXP: The NXP Kinetis SDK Version 2.0.
It comes with an interesting distribution way: instead of downloading huge packages with all-and-everything in it, I can build it ‘on demand’ online and get what I need, on demand from a web-based front end:
This tutorial describes how to create a Kinetis SDK V1.3 project using the Freescale project generator in Kinetis Design Studio.
One of the most important aspects for developing complex realtime applications is get insights into what is going on the target. Segger just has released a free tool which gives an incredible useful insight view and visualization:
Time is flying fast, time for another McuOnEclipse components release on SourceForge with the following main changes and features:
- New component for Segger RTT makes adding a console communication interface super easy (and fast!)
- RTT support for the command line Shell component
- RTT component used for Percepio FreeRTOS Tracing
- Updated USB component, support for USB CDC blocking/waiting and endpoint configuration
- Updated FreeRTOS to V8.2.3, memory heap selection improved and setting for time slicing
- RingBuffer implements a Delete() method
- Extended Kinetis SDK support in components, added by default
On SourceForge I have published an update of the McuOnEclipse software components, with following major changes:
- FreeRTOS updated to version V8.2.2 which comes with TLS (Thread Local Storage) support and GDB debug helpers.
- Percepio Trace updated to V3.0.2 with the release of Segger Real Time Terminal (RTT) for continuous trace streaming.
- FSL_USB_Stack with alternate USB initialization to deal with an issue in combination with the Kinetis SDK v1.3.0
- GenericI2C and GenericSWI2C have added support for custom I2C bus handling.
I don’t own a Mac computer, and I try to keep my tutorials as multi-host-platform as possible. So it is always cool to see if someone else posts a nice tutorial on a different host machine: For all Mac (and as well non Mac) users, have a look at this tutorial Nash Reilly has posted: “An Introduction to Freescale’s Kinetis Design Studio.”
It nicely explains downloading and installing KDS with the Kinetis SDK and then run a ‘hello world’ program on the hardware.
And very worthwhile to check out Nash’s other articles here too: http://www.allaboutcircuits.com/author/nash-reilly
Happy Nashing 🙂
I have published a Sneak Preview how GNU gprof profiling looks for an embedded target ARM Cortex-M in an earlier post:
This tutorial explains how to profile an embedded application (no RTOS needed) on ARM Cortex-M devices with GNU gprof. Additionally I explain the inner workings to generate the data necessary for gprof.
To build an application for a modern microcontroller today is not a simple thing. Well, it depends what ‘simple’ means. But compared to the ‘old days of 8bit micro controllers’ (which are still in use!) developing for a complex 32bit device is definitely a different thing. Not only the complexity has changed, but as well the breath of tools and helpers. In my view, the only constant is ‘change’, and I have changed the way how to develop several times in my career. In this post I present several different techniques I’m using in my development.