ATmega1280 Boot Loader Lock Bits

Other Hardware 3rd Party Boards
1

Hi,

according to the spec sheet:

The user can select:
• To protect the entire Flash from a software update by the MCU
• To protect only the Boot Loader Flash section from a software update by the MCU
• To protect only the Application Flash section from a software update by the MCU
• Allow software update in the entire Flash

BLB0 Mode 4 doesnt do the trick. I am still able to read the application and it is exactly as what I had before the bit set.

Is there a mode where one can disable the read of the Applcation Flash section ONLY? I am a bit confused here...

thanx for your help!

Mart

2

BLB0 Mode 4 doesnt do the trick.

What 'trick' are you trying to do?

BLB0 Mode 4: (E)LPM executing from the Boot Loader section is not allowed to read from the Application section.

Is that what you wanted and how are you testing it?