Help with hardware features

[ryaaannnn]

Hello everyone!

I know that in MSP430,

"The user can define custom BSL code for flash-based devices and protect it against erasure and unintentional or unauthorized access."

I want to know if there is a similar feature in Arduino Zero (or ATSAMD21G18, since Arduino Zero seems to be the development board based on this microcontroller ). The most important thing is to ensure

"protect it against unintentional or unauthorized access"

, where access includes read, write, and execute. This is crucial for me.

[jremington]

Very likely. The data sheet would have all the details.

[ryaaannnn]

Hi jremington,
Thank you very much for your prompt response. I will go take a look at this data sheet.

[bobcousins]

Previous topic on the subject

Code protection for SAMD21G18A

Hi DCloud, To protect the code on your SAMD21G18A requires the setting of the security bit in the Non-Volatile Memory Controller (NVMCTRL). However, while reading the security bit is just a case of checking the SB (Security Bit) in the NVMCTRL's STATUS register, writing to it requires you to call the Set Security Bit (SSB) command in the NVMCTRL's CTRLA reigster. The only example code I could find was Atmel's ASF (Atmel's Software Framework) in the nvm_execute_command() function on Github, lo…

[ryaaannnn]

Received, thank you.