Do the boot.h functions require using atomic/cli ?

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alank2
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Posted by alank2: Wed. Apr 11, 2018 - 01:09 AM
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Like boot_page_fill() - can I call this function with interrupts enabled, or must I disable them first or use an atomic block?

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AVR Microcontrollers, megaAVR and tinyAVR
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ka7ehk
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Posted by ka7ehk: Wed. Apr 11, 2018 - 02:57 AM
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Do you even need to have interrupts turned on during boot load?

 

Jim

 

Until Black Lives Matter, we do not have "All Lives Matter"!

 

 

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alank2
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Posted by alank2: Wed. Apr 11, 2018 - 03:26 AM
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In the last one I did, I didn't have interrupts turned on (or even in interrupt table because I wanted to save the room!), but in this one the uart/i2c drivers are already working and interrupt based so I used IVSEL to get it to use the bootloader interrupt table.  It is working great.  I was flashing it and it would work most of the time, but sometimes fail.  I found that one of the words didn't get programmed out of a 64 word page!  I wrapped all of the boot_ commands with an atomic block and that fixed the issue.

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