Category Archives: FreeRTOS

A popular open source real time operating system (RTOS).

McuOnEclipse Components: 3-Apr-2016 Release

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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

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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

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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

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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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How to Add Bluetooth Low Energy (BLE) Connection to ARM Cortex-M

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In many of my embedded projects I’m using successfully the Nordic Semiconductor nRF24L01+ (see “Tutorial: Nordic Semiconductor nRF24L01+ with the Freescale FRDM-K64F Board“) and the HC-06 Bluetooth transceivers (see “Getting Bluetooth Working with JY-MCU BT_BOARD V1.06“) for wireless communication. However, the nRF24L01+ is using a proprietary protocol, and the HC-06 does not work with Apple products (it does very well with Android devices). To close that gap I decided to add Bluetooth Low Energy (BLE, or Bluetooth 4.x). So this post is about how to add Bluetooth Low Energy (BLE) to NXP (formerly Freescale) Kinetis devices:

BLE Enabled Kinetis

BLE Enabled Kinetis

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McuOnEclipse Components: 22-Nov-2015 Release

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A lot of good things happened in the last three weeks, so here is a new updated McuOnEclipse component release, with the following main improvements:

  1. Updated Segger RTT component
  2. New Segger SystemView component
  3. FreeRTOS ‘tasklist’ shell command
  4. FreeRTOS with support for Segger SystemView

SystemViewer

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Segger SystemView: Realtime Analysis and Visualization for FreeRTOS

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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:

Segger System View for FreeRTOS

Segger System View for FreeRTOS

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McuOnEclipse Components: 08-Nov-2015 Release

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Time is flying fast, time for another McuOnEclipse components release on SourceForge with the following main changes and features:

  1. New component for Segger RTT makes adding a console communication interface super easy (and fast!)
  2. RTT support for the command line Shell component
  3. RTT component used for Percepio FreeRTOS Tracing
  4. Updated USB component, support for USB CDC blocking/waiting and endpoint configuration
  5. Updated FreeRTOS to V8.2.3, memory heap selection improved and setting for time slicing
  6. RingBuffer implements a Delete() method
  7. Extended Kinetis SDK support in components, added by default
Segger RTT Console

Segger RTT Console

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Tutorial: lwip with FreeRTOS and the Freescale FRDM-K64F Board

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This tutorial is about how to create a lwIP project with FreeRTOS using the Kinetis SDK V1.3.0 with Kinetis Design Studio on the Freescale FRDM-K64F board.

FRDM-K64F Board with lwIP running

FRDM-K64F Board with lwIP running

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Overview: Processor Expert

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In “Overview: From Snippets to Code Generation” I discussed several tools used in my development process. On tool which helps me a lot to get things done is Processor Expert. In this post I’ll give an overview about this tool and reasoning for the pros and cons of using it.

Processor Expert

Processor Expert

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