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

Log in or register to post comments
Go To Last Post
3 posts / 0 new
Author
Message
alank2
alank2's picture
Level: Raving Lunatic
Joined: Thu. Jul 16, 2009
Posts: 2826 View posts
#1
Posted by alank2: Wed. Apr 11, 2018 - 01:09 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Like boot_page_fill() - can I call this function with interrupts enabled, or must I disable them first or use an atomic block?

Tags:

AVR Microcontrollers, megaAVR and tinyAVR
Top
ka7ehk
ka7ehk's picture
Level: 10k+ Postman
Joined: Fri. Nov 22, 2002
Posts: 20255 View posts
Location: Tangent, OR, USA
Posted by ka7ehk: Wed. Apr 11, 2018 - 02:57 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Do you even need to have interrupts turned on during boot load?

 

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

Top
alank2
alank2's picture
Level: Raving Lunatic
Joined: Thu. Jul 16, 2009
Posts: 2826 View posts
Posted by alank2: Wed. Apr 11, 2018 - 03:26 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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.

Top