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Re: [avr-libc-dev] pgm_read_byte_far & Interrupts
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From: |
Anatoly Sokolov |
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Subject: |
Re: [avr-libc-dev] pgm_read_byte_far & Interrupts |
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Date: |
Tue, 1 Apr 2008 22:53:55 +0400 |
Hi.
> Is there a comprehensive list of problematic functions? (I know all
> functions using RAMPZ, but maybe someone assembled a list. )
> Would it be reasonable to turn off and recover interrupts during these
> commands by default?
avr-gcc starting with 4.3 save/restore RAMPZ register in interrupt handler
routines if Z register is used in them. Now pgm_read_*_far functions is
reentrant.
Anatoly.