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GR5xx APP Log module is provided in GR5xx Software Development Kit (SDK) to assist developers in development and debugging, supporting the following functionalities:

  • Output logs in real time. You can customize the output mode of debug logs (through a hardware port such as UART or J-Link RTT).
  • Store and export logs. You can store the logs in Flash of GR5xx System-on-Chips (SoCs), and obtain the logs on the mobile App GRToolbox (Android) through Bluetooth connection when needed.
  • Set log levels and filter logs. You can output logs at multiple levels (DEBUG, INFO, WARNING, ERROR) and filter logs by levels, to record information such as log level, time, and source.

Before getting started, you can refer to the following documents.

Table 1 Reference documents
Name Description

Developer guide of the specific GR5xx SoC

Introduces GR5xx SDK and how to develop and debug applications based on the SDK.

J-Link/J-Trace User Guide

Provides J-Link operational instructions. Available at

Keil User Guide

Offers detailed Keil operational instructions. Available at

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