GR551x OTA Example Application

PublishTime：2021-06-22

The over-the-air (OTA) technology enables downloading a latest software release to a device and enables the deviceto automatically check and update firmware through wireless transmission. OTA allows users to quickly fix defects,provides a rich set of functions, and shortens the cycle of product iteration and update.This document introduces how to update GR551x firmware through GRToolbox (Android) by using Bluetooth LowEnergy (Bluetooth LE) technology. Two update approaches are available. Users can choose an appropriate one basedon product requirements:
●Jump to Boot firmware for firmware update. During firmware update, the system jumps from applications to theBoot firmware, and the Boot firmware enables download of the target firmware. After download, the systemjumps to the target firmware for running. During update, it is required to first disable Bluetooth connection onthe mobile phone and then scan and reconnect to the Boot firmware via Bluetooth. Compared with the secondapproach, this approach makes the best use of flash.
●Perform update in application firmware (for example, ble_app_template_dfu). Run the application firmware todownload the target firmware. After download, the system jumps to the target firmware for running. Duringupdate, users can update firmware directly without disabling Bluetooth connection on a mobile phone. Thisapproach provides smooth user experience.

Brand of Product：	GOODIX
Part#：	GR551x 、 GR5515 More Part#
Product Category：	More
Application：	More
Data Type：	Application note & Design Guide More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	2021-01-29
Version Number：	Rev 1.9
Data Encoding：
Data Size：	2.7 MB

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