Extended OTP Test

Table of Contents

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

Introduction

This example demonstrates how can one write to the extended OTP eFuses of the device. This is currently only supported 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.

The example tries to write the USB and PCIE VID/PID onto the OTP rows. It also dumps the OTP MMR rows. It makes use of Sciclient API calls to do this, there are wrapper functions provided in the examples for these.

Supported Combinations

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

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.

UART Console:

Enabled VPP
Success programming VID/PID
OTP MMR 0: 0x1000090
OTP MMR 1: 0x0
OTP MMR 2: 0x0
OTP MMR 3: 0x0
OTP MMR 4: 0x0
OTP MMR 5: 0x0
OTP MMR 6: 0x0
OTP MMR 7: 0x0
OTP MMR 8: 0x0
OTP MMR 9: 0x12344321
OTP MMR 10: 0x45a0e047
OTP MMR 11: 0xebc84321
USB VID: 0x45a0
USB PID: 0xe047
PCIE VID: 0x1234
PCIE PID: 0x4321
All tests have passed!!