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This document introduces how to use and modify peripheral examples in a GR551x SDK, which allows users to quickly get started with secondary development.

You can refer to the following documents before using and modifying a peripheral example.

Table 1 Reference documents
Name Description

GR551x Developer Guide

Introduces the software/hardware and quick start guide of GR551x SoCs.

GR551x Datasheet

Provides overview, pinout, memory, PMU, clock, peripherals, security cores, communications subsystems, and packaging information of GR551x SoCs.

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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