McuOnEclipse Components: 12-Dec-2016 Release


Time is passing by so fast, and the year end is approache fast! I’m pleased to announce that a new release of the McuOnEclipse components is available in SourceForge:

  • Percepio Trace V3.1 for FreeRTOS which includes both Segger RTT continuous streaming and snapshot tracing in a single API
  • Generation of sources and drivers so they can be used without Processor Expert using McuLibConfig, removal of dependency to NXP Kinetis SDK: components use a generic API approach to have them working with other SDKs.
  • New contributed ExceptionsHandler component
  • Callback Setter and Getter in USB CDC stack for simpler option handling
  • GenericTimeDate with flexible RTC support and added Unix Timestamp functions
  • LongKey events in Key component
  • FreeRTOS with optimized task selection on Cortex-M4/M7
  • Many smaller bug fixes and enhancements
SourceForge

SourceForge

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Making-Of Sea Shell Sand Clock


The year is coming to an end, the Holiday season is approaching. In case you are looking for a nice present: I have completed my version of a sand clock: a clock writing the time into sand:

Sandclock

Sandclock

If you are interested to build your own version, I have documented the different steps with tips and tricks…

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McuOnEclipse Components: 30-Oct-2016 Release


A new McuOnEclipse components release was long overdue, so I’m pleased to announce that a new drop is available with the following major changes:

  • Segger SystemView library with kernel time reporting
  • GenericTimeDate supports different hardware RTC devices
  • Utility with little endian packet handling functions
  • Shell Standard I/O handlers for USB CDC, Segger RTT and Bluetooth
  • FreeRTOS and stack size reporting
  • printf() support in Shell component
  • Various small bug fixes and improvements
SourceForge

SourceForge

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Tutorial: Building FreeRTOS Applications for ARM Cortex-M4 on i.MX7 with Eclipse


Command line tools to build applications are great. But productivity goes up if I can use the standard Eclipse environment with GNU tools. This tutorial is about how to use standard and free GNU and Eclipse tools to build my FreeRTOS application for the ARM Cortex-M4 on i.MX7 🙂 :

Eclipse used to build FreeRTOS applications for M4 on i.MX7

Eclipse used to build FreeRTOS applications for M4 on i.MX7

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Tutorial: RFID Tags with the NXP NFC Controller PN7120 and Eclipse


Playing with RFID and NFC is definitely fun :-), and they are everywhere! For a research project I’m exploring different RFID tags and solutions. I several types around for a long time, but never found the time to actually work on it, so last nightI thought I give it a try, and I have it working with GNU ARM and Eclipse, powered by the NXP FRDM-K64F board 🙂

NXP NFC PN7120S

NXP NFC PN7120S with a FRDM-K64F Board

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ARM Cortex-M Interrupts and FreeRTOS: Part 3


This is the third part about ARM Cortex-M and how the interrupts are used. In Part 1 I discussed the Cortex-M interrupt system and in Part 2 I showed nested interrupt examples. This part is about FreeRTOS and how it uses the Cortex-M interrupt system.

NXP KV58F ARM Cortex-M7

NXP KV58F ARM Cortex-M7

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McuOnEclipse Components: 31-July-2016 Release


Time for a new major update of the McuOnEclipse components, with the fillowing main features and changes:

  • FatFS component updated to R0.12 with patch 3 and exFAT support
  • Extended support for Cortex-M7
  • Extended support for Kinetis SDK V2.0
  • USB component support for Kinetis SDK V1.3
  • Improved FreeRTOS for NXP FreeRTOS TAD plugin
  • Added C++ wrappers to multiple components
  • Many smaller fixes and improvements

    SourceForge

    SourceForge

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Hexiwear: Teardown of the Hackable ‘Do-Anything’ Device


Smartwatches are around for a while now. To me it is still questionable how useful the ‘big’ ones for iOS and Android are. But there are definitely the crowd funded smartwatch projects which caught my attention. Maybe it is about the ‘do-anything’ with connectivity?  One of these gadgets is Hexiwear: a hackable open source device

Hexiwear Device

Hexiwear Device

While it *could* be a kind of smartwatch, the value of this thing is more that it includes a plethora of sensors with two microcontroller, and I can use Eclipse with GNU tools to build my firmware :-).

Alert: Hackster.io is giving away 100 Hexiwears, but you need to hurry up (submission until July 15th 2016)!

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FatFS with Adafruit MicroSD Breakout Board and NXP FRDM-KL25Z


Breakout boards are great: they allow me to explore functions quickly, without to build my custom board: all what I need is some wires and ideally a bread board.

Adadfruit MicroSD Card Breakout Board

Adadfruit MicroSD Card Breakout Board

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McuOnEclipse Components: 25-June-2016 Release


SourceForge

SourceForge

A new release is available on SourceForge, with the following main changes:

  • Support for FreeRTOS and Cortex-M7
  • Segger SystemView updated to V2.38
  • Components for NXP Kinetis SDK V1.3
  • Fixed bug in Wait component (register handling for GCC and ARM)
  • FatFS supports FreeRTOS V9.0.0 with static memory allocation
  • FreeRTOS shell and task list with static memory allocation
  • Floating point conversion routines in Utility
  • FreeRTOS component shows NVIC mask bits

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INTRO FS2016 Semester Closing with Robot Maze Challenge


“Learning-by-doing” is one of the core principles of my embedded systems and robotics course at the Lucerne University. For this the students apply what they learned using a robotics platform. In earlier semesters we did a Sumo battle at the end. This time the challenge was to build a remote controller plus to add the ability to explore and solve a line maze:

maze solving robots

maze solving robots

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McuOnEclipse Components: 29-May-2016 Release


Major changes in this new release:

  • FreeRTOS V9.0.0 with static memory allocation.
  • Shell with single character I/O function.
  • FatFS File System with extra shell commands for memory dump and file creation.
  • Segger SystemViewer library updated to V2.36a
Segger SystemViewer V2.36a

Segger SystemViewer V2.36a

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FreeRTOS V9.0.0 with Static Memory Allocation


I’m using FreeRTOS in most of my applications. There were only a few exceptions where an RTOS has to be used in safety critical systems: there usually it is not permitted to use any dynamic memory allocation because this adds the risk that a memory allocation could fail at runtime because of memory fragmentation or memory leak. And FreeRTOS uses a dynamic memory (heap) for the task stacks and the RTOS resources including semaphore, mutex and queues.

This is now a thing of the past. This week a new FreeRTOS Version 9 was released which does not need any dynamic memory allocation anymore: it is possible now to build completely statically allocated systems with FreeRTOS :-).

Dynamic and Static Memory Allocation in FreeRTOS V9.0.0

Dynamic and Static Memory Allocation in FreeRTOS V9.0.0

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Mother of Components: Processor Expert with NXP Kinetis SDK V2.0 Projects


Unfortunately, now the NXP Kinetis SDK V2.0 does not include Processor Expert support (see “First NXP Kinetis SDK Release: SDK V2.0 with Online On-Demand Package Builder“). But at the Lucerne University we are using more than 150 different custom Processor Expert components we would like to use with that new SDK. So how to make them working with the Kinetis SDK V2.0? Using a Processor Expert as “the mother of all components”:

NXP Kinetis SDK V2.0 and Processor Expert Side-by-Side under Eclipse

NXP Kinetis SDK V2.0 and Processor Expert Side-by-Side under Eclipse

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McuOnEclipse Components: 8-May-2016 Release


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:

Components compatible with Kinetis SDK

Components compatible with Kinetis SDK

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McuOnEclipse Components: 3-Apr-2016 Release


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.

McuOnEclipse 2016-04-03 Release

McuOnEclipse 2016-04-03 Release

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nRF24L01+ 2.4 GHz Wireless Connectivity with the tinyK20 Board


I’m using the tiny and inexpensive Nordic Semiconductor nRF24L01+ transceiver (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) in many projects: it costs less than $3 and allows me to communicate with a proprietary 2.4GHz protocol in a low power way (see “IoT: FreeRTOS Down to the Micro Amps“). I have that transceiver now running with the tinyK20 board too:

nRF24L01+ Transceiver with tinyK20

nRF24L01+ Transceiver with tinyK20

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McuOnEclipse Components: 7-Feb-2016 Release


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.
Segger SystemViewer V2.30

Segger SystemViewer V2.30

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McuOnEclipse Release 10-Jan-2016


With the start of the new year 2016 I have published a new McuOnEclipse component release with the following major updates:

  1. Updated Segger SystemView and Real Time Transfer (RTT): added terminal functions and extra interfaces
  2. Improved USB CDC with serial number handing
  3. FreeRTOS TaskList shell command
  4. USB Stack: added MSD Host support for MCF52259, added support for K24FN120 and for the 100 MHz K20 devices
  5. New NEOMatrix component for Adafruit NeoPixel Matrix displays

    256 NeoPixel Matrix with FRDM-KL25Z

    256 NeoPixel Matrix with FRDM-KL25Z

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