G.FIT Module Features

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:

• Nordic Semiconductor’s nRF52832 chip with 64kB RAM, 512kB Flash and a 32-bit ARM Cortex M4F CPU
• Concurrent ANT and Bluetooth protocol operation using the S332 SoftDevice (a pre-compiled protocol stack solution for nRF52 SoCs)
• Preloaded fitness equipment focused G.FIT Network Processor application including:
  • ANT+ FE-C with diversified frequency support and HRM device profile support
  • Bluetooth HRS/HRP (heart rate profile and service), FTMS/FTMP (fitness equipment machine service profile) and DIS (Device Information Service)
  • Enhanced coexistence support for group applications
  • Wireless and serial firmware update support
• Certification of compliance with radio standards in major markets including North America, Australia / New Zealand, Japan and Korea. Declared conformity with radio regulations and requirements for Europe
• Qualification by the Bluetooth SIG
• G.FIT Library and SDK for building custom fitness equipment applications or MCU implementations using the nRF52832 SoC – refer to the G.FIT User Guide and Specification for more information
• G.FIT modules come with RSSI calibration information stored from the factory
• G.FIT modules are serialized from the factory with an ANT ID to ensure unique device IDs in G.FIT products
• D52Q models support hardware drop-in compatibility with Garmin Canada FIT2 modules and other Garmin Canada M4 form factor modules (C7, AP2, N5, D52Q in certain configurations) . For drop-in replacements, the G.FIT serial interface will need to be implemented on the host MCU.
• D52M models (M8 form factor) provide a new, smaller form factor for fitness equipment modules

Module Hardware

• Integrated printed antenna
• On-board 32MHz and 32.768 kHz crystal clocks
• 1.7V - 3.6V supply (D52QGFM4IA, D52MGFM8IA)
• 1.71V - 3.6V supply (D52QGFM4IA-A)
• Operating temperature: Industrial (-40°C to +85°C)
• Up to 30 GPIOs (D52QGFM4IA)
• Up to 24 GPIOs (D52QGFM4IA-A, D52MGFM8IA)
• Programmable output/channel from -20dBm to 4dBm
• Excellent receiver sensitivity
  • -93dBm (ANT mode)
  • -96dBm (BLE mode)
• 1dBm resolution RSSI
• Total 512kB flash, 64kB RAM
• SPI, I2C and UART interface
• ARM SWD interface
• Internal DC/DC converter supported
• 20 x 20mm module (D52Q models, M4 format)
• 14 x 9.8 x 2.0mm module (D52M models, M8 format)
• Onboard 3-axis MEMS accelerometer (D52QGFM4IA-A)
  • LIS2DH by ST Microelectronics
  • 2 programmable interrupt pins
• Layout compatible options with N5150M4CD, N550M4CC, N548M4CB, ANTAP281M4IB, ANTC782M4IB (for D52Q models)
• Layout compatible options with N5150M8CD, N550M8CC, N548M8CB (for D52M models)
• Radio regulatory approval for major markets
• BLUETOOTH SIG qualification
• RoHS compliant

Picture	Module	Description	Ordering/Package Information	Part Status*
	D52QGFM4IA	20x20mm module with up to 30GPIOs and 8 analog inputs	D52QGFM4IA-TRAY: 20pc in 4x5 tray D52QGFM4IA-REEL: 800pc on 13" tape and reel	NRND
	D52QGFM4IA-A	20x20mm module with up to 24GPIOs and 5 analog inputs; onboard 3-axis MEMS accelerometer	D52QGFM4IA-A-TRAY: 20pc in 4x5 tray D52QGFM4IA-A-REEL: 800pc on 13" tape and reel	NRND
	D52MGFM8IA	14.0x9.8x2.0mm module with up to 24GPIOs and 8 analog inputs	D52MGFM8IA-TRAY:  40pc in 8x5 tray D52MGFM8IA-REEL: 1500pc on 13" tape and reel	NRND
	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™	D52QSKM6IA-A-TRAY: 10 pc on 150x165mm tray	NRND

* 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.

D52DK2 - D52 ANT SoC Module Series Starter Kit

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
	NRND
	ANTBAT2			2	CR2032 battery board with a Molex socket, a reset button, and a five-position dip switch
	NRND
	ANTIO1			2	I/O board with a Molex connector, a Molex socket, 4 LEDs and 4 buttons
	NRND
	ANTUIF1			1	USB interface board with a Molex socket
	NRND
	ANTUSB-M			1	ANT USB dongle
	NRND
				1	Segger J-Link Lite Programmer

D52EXT1 - D52 ANT SoC Module Series Extender Kit

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
	NRND
	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
	NRND

Please refer to ANT Wireless or Nordic Semiconductor for licensing information about SoftDevices and associated software.

SoftDevices

G.FIT Modules take advantage of ANT+ and Bluetooth features and so use the following ANT/Bluetooth SoftDevice (pre-compiled protocol stack binary):

G.FIT Software

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

D52 ANT SoC Module Series Conditions of use:

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:

www.thisisant.com/developer/components/d52/#879_tab

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.

Documents

1. nRF52832 Product Specification
2. nRF52 Series Compatibility Matrix
3. nRF52832 Objective Product Specification
4. nRF52 Development Kit Documentation

Software

1. nRF5 SDK
    

Downloadable Materials