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G.FIT is a turnkey dual-protocol ANT/Bluetooth® low energy technology (BLE) solution for wireless fitness equipment and smart bike trainers, optimized for group and classroom training applications (e.g., leader board applications) with 50+ fitness devices and multiple receivers. G.FIT is exclusively available on modules from Garmin Canada Inc.
Garmin Canada Inc. has evolved individual fitness machines and smart bike trainers to incorporate wireless standards group fitness capabilities. The G.FIT solution is the result of that evolution, and solves the challenges of group fitness:
Garmin Canada Inc. offers G.FIT Fitness Equipment Modules, based on Nordic Semiconductor’s nRF52832 SoC supporting ANT+ and Bluetooth® low energy technology features aimed at fitness equipment applications and gym environments. Please refer to the G.FIT User Guide and Specification for more information about the G.FIT Library, serial interface. G.FIT modules include:
|Picture||Module||Description||Ordering/Package Information||Part Status*|
|D52QGFM4IA||20x20mm module with up to 30GPIOs and 8 analog inputs||
|D52QGFM4IA-A||20x20mm module with up to 24GPIOs and 5 analog inputs; onboard 3-axis MEMS accelerometer||
|D52MGFM8IA||14.0x9.8x2.0mm module with up to 24GPIOs and 8 analog inputs||
|D52QSKM6IA-A||D52Q module mounted on a carrier board for starter kit and development use with all ANT software libraries and applications, including ANT BLAZE™ and G.FIT™||
* ACTIVE: Device, tool, or software recommended for new designs.
Development with the D52 ANT SoC Module Series (including G.FIT) is supported by a starter kit (D52DK2) and an extender kit (D52EXT1), which is designed to work with the starter kit. Most components in both kits are also available for sale individually from distributors.
The D52 starter kit (D52DK2) contains all the hardware necessary to develop on the G.FIT platform, other advanced ANT libraries (e.g., ANT BLAZE™), ANT or Bluetooth® low energy technology. The downloadable ANT SoC Module Starter Kit User Manual describes using the kit with reference examples and the nRF5 SDK from Nordic Semiconductor. The G.FIT SDK and the G.FIT User Guide and Specification will be available for download from Thisisant.com.
The kit contents are described below:
|Module||Part Number||Quantity||Part Description|
|D52QSKM6IA-A||2||M4 module mounted on carrier board with 20-pin Molex connector, NFC connections available, SWD programming header, additional through-hole connections for I/O pins|
|ANTBAT2||2||CR2032 battery board with a Molex socket, a reset button, and a five-position dip switch|
|ANTIO1||2||I/O board with a Molex connector, a Molex socket, 4 LEDs and 4 buttons|
|ANTUIF1||1||USB interface board with a Molex socket|
|ANTUSB-M||1||ANT USB dongle|
|1||Segger J-Link Lite Programmer|
The D52 extender kit (D52EXT1) builds on the D52 starter kit to provide extra nodes and more power for IoT developers and platforms, including G.FIT group gym applications ANT BLAZE™. The introduction of this kit also coincides with the availability of the ANTBAT3 combination I/O and battery board. Powered by 2 AA batteries, the development board enables longer testing and development and includes buttons and LEDs for testing input and interaction. A D52 starter kit is recommended for use with the extender kit, as the starter kit includes the tools necessary to program and monitor development nodes.
The contents of the extender kit are described, below:
|Module||Part Number||Quantity||Part Description|
|D52QSKM6IA-A||4||M4 module mounted on carrier board with 20-pin Molex connector, NFC connections available, SWD programming header, additional through-hole connections for I/O pins|
|ANTBAT3||4||Combined battery and I/O board with a Molex socket, a reset button, I/O buttons, LEDs and dip switches powered by two AA batteries|
Please refer to ANT Wireless or Nordic Semiconductor for licensing information about SoftDevices and associated software.
G.FIT Modules take advantage of ANT+ and Bluetooth features and so use the following ANT/Bluetooth SoftDevice (pre-compiled protocol stack binary):
|From ANT Wireless|
|Included in the G.FIT Software Download Package; see below|
G.FIT features are pre-loaded on all G.FIT Modules and are accessed with the G.FIT Network Processor application. In addition, G.FIT features are available in an embedded library which can be used to create custom equipment-specific G.FIT applications using G.FIT modules. G.FIT documentation, the G.FIT embedded library, and the G.FIT SDK are available on the software libraries page.
The G.FIT library download includes the S332 SoftDevice. The package, including a pre-compiled G.FIT Network Processor application, is available as an evaluation download. Note that a commercial license is required to deploy custom applications built using the G.FIT embedded library in an end product.
ANT Software Libraries Download Page
The D52 Series of modules (including G.FIT) have been designed to support the ANT and/or Bluetooth low energy Protocols and are certified for use in many geographic regions around the globe. However, a product incorporating the D52 series module may carry the certification IDs of the module only if it complies with the restrictions and terms, including use of Garmin-approved software, provided in the conditions of use available at:
Discuss this product at the ANT Hardware Products Forum.
In addition to the downloadable resources below, the following documents and resources are available from Nordic Semiconductor's nRF52832 product page, or from the Nordic Semiconductor Infocenter.
|Title||Date Modified||Version||File Size|
|G.FIT Fitness Equipment Module Datasheet||Aug 31, 2017||1.0||4 MB|
|G.FIT & D52 Premium Module Manufacturing Considerations||Jul 18, 2019||1.0||269 KB|
|G.FIT User Guide and Specification||Sep 19, 2017||1.2||2 MB|
|ANT SoC Module Starter Kit User Manual||Aug 03, 2016||1.0||1 MB|
|D52M Module M8 Altium Library||Mar 15, 2017||8 KB|
|D52M Module M8 STEP Model||Mar 15, 2017||96 KB|
|D52Q Module M4 Altium Library||Mar 15, 2017||8 KB|
|D52Q Module M4 STEP Model||Mar 15, 2017||351 KB|
|ANT Message Protocol and Usage||Apr 02, 2014||5.1||4 MB|
|ANTware II||Nov 12, 2013||4.1.00||1 MB|
|Interfacing with ANT General Purpose Chipsets and Modules||Dec 03, 2010||2.1||443 KB|
|Interpreting RF Radiation Patterns||Sep 23, 2014||1.0||1 MB|
|ANT USB Interface Board Driver - Windows||Oct 03, 2012||220.127.116.11||156 KB|
|D52 Series DoC||May 09, 2018||1.0||120 KB|