Runtime Software Revision Update Example

Table of Contents

• Introduction
• Supported Combinations
• Steps to Run the Example
• Sample Output

Introduction

This example demonstrates the runtime software revision update. For now only the software revision update for secure boardcfg is supported. In a fresh sample the revision number would be 0U. Example reads the SWREV revision first. If the revision number is 0, then it tries to write to the eFUSE. This example is currently supported only in HS-SE devices. This is a special example, and is booted by ROM. Because of this it is to be treated like a bootloader application. It makes use of Sciclient API calls to do this, there are wrapper functions provided in the example for this.

Supported Combinations

Parameter	Value
CPU + OS	r5fss0-0 nortos
Toolchain	ti-arm-clang
Board	am64x-evm
Example folder	examples/otp/runtime_swrev/

Steps to Run the Example

• When using CCS projects to build, import the CCS project for the required combination and build it using the CCS project menu (see Using SDK with CCS Projects).
• When using makefiles to build, note the required combination and build using make command (see Using SDK with Makefiles)
• Launch a CCS debug session and run the executable, see CCS Launch, Load and Run

Sample Output

Shown below is a sample output when the application is run:

Starting Runtime SWREV writer
SWREV read : 0x1
SWREV already written to eFUSE, value : 0x1
All tests have passed!!