My friend Matt Muddiman of Freescale gave this presentation as part of the MEMS Education Series (hosted by Arizona Technology Council and MEMS Industry Group) in Scottsdale Arizona earlier this week.

Hi Everyone, In my previous tutorial, I demonstrated how to import an ISSDK based example project into MCUXpresso IDE, build and run it on the Freedom board (FRDM-KL27Z). If you want to visualize/log sensor data, easily change sensor settings (ODR, Range, Power Mode) or directly read and write sensor registers, you can use the Freedom Sensor Toolbox-Community Edition (STB-CE) as described below or in the STBCEUG. 1. Connect the SDA port (J13) on the FRDM-KL27Z board to a USB port on your computer. 2. Open STB-CE GUI by double clicking the Freedom Sensor Toolbox (CE) shortcut located on your desktop. 3. Select "Out of Box Sensor Demonstration". 4. Select the Project to be launched and click on Continue. Base Board Name – FRDM-KL27Z Shield Board Name – OnBoard Project Name – MMA8451 Accelerometer Demo 5. The ISSDK-based MMA8451 Accelerometer Demo firmware is loaded to the KL27Z MCU and the MMA8451 Accelerometer Demo v1.0 GUI launched. 6. In the Main screen you can change basic MMA8451Q accelerometer settings (ODR, Range, Power Mode), enable embedded functions (Landsacpe/Portrait, Pulse/Tap, Freefall, Transient), start/stop accelerometer data streaming and/or logging.   7. The Register screen (MMA8451) provides low-level access (R/W) to the MMA8451Q registers along with a detailed description of the selected register. 8. To change the bit value, simply click on the corresponding cell (make sure you selected the Standby mode before writing a new value to the selected register). I hope you find this simple document useful. f there are any questions, please feel free to ask below.  Regards, Tomas

This is the 9 December 2014 build of Vibration Monitoring program written by Mark Pedley in the Sensors Solutions Division systems/algorithms team.  It is compatible with Freescale FRDM-KL25Z/KL26Z/KL46Z/K64F Freedom development platforms.  You can flash your board using the File->Flash pull-down menu.    The application contains an option for controlling motor bias and feedback via optional motor control shield to be discussed in an upcoming Freescale blog.  Use the View->Motor Controls pull-down to enable those functions.

All, The attached was put together in response to the posting by Andrew Hartnett.  It contains a bare-metal IAR project for 9-axis sensor fusion V7.00 on the KL25Z.  You need to have built KSDK for the KL25Z to include the ISSDK option.  Then unzip this file into your SDK_2.0_FRDM-KL25Z/boards directory.  The sample project is then located at SDK_2.0_FRDM-KL25Z/boards/frdmkl25z_virtual_shield/issdk_examples/algorithms/sensorfusion/baremetal_sensor_fusion/iar. There is also an included freertos_sensor_fusion project.  Ignore that for now.  It compiles and links, but needs more RAM than the KL25Z supplies.  I'm looking at ways to decrease the RAM requirements to fit. Regards, Mike

************************************************************************************************************* * This simple example code has been written for the NXP FRDM-KL25Z + FRDMSTBC-A8471 * boards and demonstrates how to use the embedded transient detection function * in conjunction with the auto-wake/sleep mode for reducing current consumption * of the FXLS8471Q. * * The transient threshold is set to 312.5mg (5 counts) on the X and Y axis. * Once this threshold is exceeded, the FXLS8471Q is waken up and an interrupt * is generated on the INT1 pin. If the acceleration is below this threshold * within the 1s period, the FXLS8471Q goes back to sleep mode and also * generates an interrupt on the INT1 pin. *************************************************************************************************************

The MMA690x, a SafeAssure solution, is a dual axis, Low g, XY, Sensorbased on Freescale’s HARMEMS technology, with an embedded DSP ASIC, allowing for additional processing of the digital signals. Here is a Render of the MMA690x Breakout Board downloaded from OSH park: Layout Design for this board: In the attachments section, you can find the Schematic Source File (SCH), Schematic PDF File, Layout Source File (BRD), Gerber Files (GTL, GBL, GTS, GBS, GTO, GBO, GKO, XLN) and BOM files.   If you're interested in more designs like this breakout board for other sensors, please go to Freescale Sensors Breakout Boards Designs – HOME

Hello community, As continuation of the Different pin styles in pressure sensors post, I would like to add some useful information about the pin styles mentioned on the datasheets. Some pressure sensors shows the following pin style configuration: But… What do V1, V2 and VEx actually mean? How should I connect those pins? Answer: V1, V2 and VEX pins are used for factory trimming and it is recommended to leave these pins unconnected. So, in case of unibody package, you will require only pin #1 (Vout), pin #2 (Ground), and pin #3 (Vs) as follow: I hope you find useful this information. Regards, David

All, This is my personal "cheat sheet" that I use as reference whenever I have to code angular transformations from one frame of reference to another.  There's nothing unique here, it just organizes things in a way that I can find them quickly.  I hope you find it useful. Mike

This is a standalone project generated via the Kinetis Project Generator tool for SF Version 7.1 operating on K64F/MULT2B shield with FreeRTOS.

Unibody Package Case 344-15

The attached is the windows installer for the latest verson of the Windows version of the Freescale Sensor Fusion Toolbox.  This version must be used with Version 5.00 of the sensor fusion library.  It is NOT backward compatible, as the structure of the undocumented Kalman filter packet has changed. Please uninstall any prior versions of the toolbox before running this installer. As in prior releases, you can reflash your Freedom boards from within the application itself.  So if you want to try the new fusion without downloading the new library and firing up KDS or CodeWarrior, you can. Version 5.00 was posted to this same board just a few minutes ago in a separate post.  It contains full documentation, including algorithm development, datasheet and user guide. Regards, Mike Stanley

The attached is a preview copy of build 422 of the sensor fusion library, which is currently being tested by the Freescale Sensor's team. Please consult the docs/Release_Notes.txt file for changes from build 420, as well as known errata. This version is released under the following license:   Freescale Sensor Fusion Library for Kinetis MCUs IMPORTANT. Read the following Freescale Software License Agreement (“Agreement”) completely.  By downloading this file, you indicate that you accept the terms of this Agreement and you also acknowledge that you have the authority, on behalf of your company, to bind your company to such terms.  You may then download or install the file. FREESCALE END-USER SOFTWARE LICENSE AGREEMENT Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.     * Redistributions in binary form must reproduce the above copyright  notice, this list of conditions and the following disclaimer in the  documentation and/or other materials provided with the distribution.     * Neither the name of Freescale Semiconductor, Inc. nor the  names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL FREESCALE SEMICONDUCTOR, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. © 2004-2014 Freescale Semiconductor, Inc. All rights reserved.

For those of you who do not have access to Google Play, here is the latest .apk file for the Android version of the Sensor Fusion Toolbox.  This version should trap problems which caused previously reported crashes.  There are no visible changes to the functionality.   IF you have access to Google Play, we recommend that you use that as your default installer, as you can automatically get updates.

This is a pre-release .msi installer for the Freescale Sensor Fusion Toolbox for Windows NEXT RELEASE.  This (or a later copy) will eventually replace the release copy at http://www.freescale.com/sensorfusion.  Altough this is a preview copy, it is believed stable.  Please let us know of any issues seen.  This version has a nice feature in that it can re-flash your Freedom board (KL25Z, KL26Z, KL46Z, K20D50M and K64F) with the matching firmware.  The new feature is under the File->Flash menu item.  There have also been some nice changes made to the "Magnetics" view.

Attached is a PDF dump of a classic blog post.  Please forgive the format problems.  I'll work with the web team in January to get it reposted to the NXP site. Mike

The Sensor Fusion Toolbox for Android includes a feature illustrating how an air mouse might be implemented on top of the Freescale sensor fusion library.  That tool includes documentation which discusses the algorithm.  That documentation is replicated on the MEMS Industry Group GitHub site.  It's been pointed out that this could use a couple additional diagrams to illustrate the geometry behind the calculations.  For that, please see the attached. BTW, The preview below has been somewhat corrupted by the blogging platform.  I suggest you download the powerpoint file before viewing.

The following video shows how to run the FRDM 6DOF Bare Board eCompass using the FRDM-K22. This algorithm uses the FXOS8700 contained on the Freedom Board. In order to get more information about the Sensor Fusion Library for Kinetis MCU's 5.0, please refer to the following link: Sensor Fusion|Freescale I hope this material will be useful for you. David

Attached is an LPCExpresso project for LPC1549.  It is compatible with the latest version of the Sensor Fusion Toolbox for Windows (the version targeted at Version 6.00 and 7.00 sensor fusion).  This project is a variant on the Sensor Fusion Version 6.00 library.  Algorithmically this is virtually identical to Version 7.00.

Issue Using the STB GUI for eCompass kits RD4247MAG3110 and RD4247FXOS8700 only -- v6.1.0.1 on a machine that does not have the Adobe Flash Player ActiveX program installed may run into the following error after pressing the eCompass button: Solution Install the Adobe Flash Player + ActiveX from Adobe. Let us know if you are facing any other issues with the STB GUI v6.1.0.1. Regards, Tomas