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shumatech / BOSSA

BOSSA is a flash programming utility for Atmel's SAM family of flash-based ARM microcontrollers. The motivation behind BOSSA is to create a simple, easy-to-use, open source utility to replace Atmel's SAM-BA software. BOSSA is an acronym for Basic Open Source SAM-BA Application to reflect that goal.

Home Page:http://www.shumatech.com/web/products/bossa

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lock region documentation to avoid overwriting the last 16kB or so.

helmut64 opened this issue · comments

commented

I have problems to understand the lock option. I like to use BOSSA in an Arduino Zero D21 environment. When Downloading the sketch it erases the entire flash (after the bootloader).

I like to protect (or not to erase) the last remaining 16 kB (of the 256kB D21 flash). I removed already the -e option in the platforms.txt but BOSSA ist still erasing the entire Flash.

Will the lock region be of any help?
Do I need to add this feature to BOSSA?

Thank you for your advise.

commented

I believe I found out how it works.
I can lock 16 regions (0-15), each being 1/16 of the Flash memory.
I may can lock the last region (15) in the Arduino platforms.txt bossac command line, in my Sketch I unlock 15 to allow to write into it. With the next Sketch Download it get locked again before erasing.