URL:
<http://savannah.nongnu.org/bugs/?func=detailitem&item_id=15512>
Summary: bootloader-utilities not IR-save
Project: AVR C Runtime Library
Submitted by: None
Submitted on: Mon 01/23/06 at 12:32
Category: Library
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: None
Status: None
Privacy: Public
Assigned to: None
Percent Complete: 0%
Originator Email: [EMAIL PROTECTED]
Open/Closed: Open
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Details:
The bootload utilities
boot_page_clear
boot_page_fill
boot_page_write
dont work correctly if they are interrupted by an interrupt.
This is because of the security feature of bit SPMEN: flash-commands must be
made within 4 clock cycles after writing SPMEN to one.
Workaround:
disable interrupts before executing the bootload functions.
Maybe this is not really a bug, but it should be noted in the documentation.
thanks, Stefan Kleinwort
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Carbon-Copy List:
CC Address | Comment
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mikrocontroller --AT-- electronic-solutions --DOT-- de | Originator Email
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