AVR16EB32 datasheet(20/46 Pages) MICROCHIP

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AVR16EB32 Curiosity Nano

On-Board Debugger

User Guide

DS50003605B - 20

Info: The available feature-set and corresponding prevention mechanism

depend on the device. Check the data sheet for further information.

The protection mechanism can be disabled for users wanting to have the complete experience of

given features that require irreversible changes. Doing this will result in permanent changes.

The pydebuggerconfig package distributed on pypi.org can be used to tweak many aspects of the

debugger, including configuration protection. This procedure requires the installation of a recent

release of Python 3 and the pydebuggerconfig package in that environment.

Step 1: Current status

Determine whether protection is currently enabled by executing:

pydebuggerconfig read

Then check for the section:

0x0F (15)

# Program/debug features

bit 0, SINGLE_DEVICE: 1 # Single-device

bit 1, PROG_ENABLED: 1 # Programming

bit 2, DEBUG_ENABLED: 1 # Debug

bit 3, FUSE_PROTECTION: 1 # Fuse protection

A FUSE_PROTECTION value of '1' indicates that protection is in place.

Step 2: Modifying the protection setting

Calculate the desired setting for TARGET_DEBUG_FEATURES by setting FUSE_PROTECTION to '0'.

Replace the current value in the TARGET_DEBUG_FEATURES register by executing, for example:

pydebuggerconfig replace -r TARGET_DEBUG_FEATURES=0x07

To verify that the new value is set, repeat the process from step 1 and then toggle power on the kit.

All protection mechanisms are now disabled.

Step 3: Restoring protection

Protection can be re-enabled either by repeating step 2 with the initial value or using the factory-

restore function by executing:

pydebuggerconfig restore

Important: The restore function will only restore any altered

kit configuration

settings that have changed since manufacturing, which is done by restoring a

copy of the

kit configuration settings stored internally on the debugger. This

operation does not affect the MCU and will not undo any irreversible changes that

may have been made to its configuration.

AVR16EB32 데이터시트(PDF) 20 Page - Microchip Technology