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84 lines
1.6 KiB
Groff
84 lines
1.6 KiB
Groff
4 years ago
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.TH "interrupt.h" 3 "24 Jun 2019" "Version 2.0.0" "avr-libc" \" -*- nroff -*-
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.ad l
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.nh
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.SH NAME
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interrupt.h \-
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.SH SYNOPSIS
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.br
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.PP
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.SS "Defines"
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.PP
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.RI "\fBGlobal manipulation of the interrupt flag\fP"
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.br
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The global interrupt flag is maintained in the I bit of the status register (SREG).
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.PP
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Handling interrupts frequently requires attention regarding atomic access to objects that could be altered by code running within an interrupt context, see <\fButil/atomic.h\fP>.
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.PP
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Frequently, interrupts are being disabled for periods of time in order to perform certain operations without being disturbed; see \fBProblems with reordering code\fP for things to be taken into account with respect to compiler optimizations.
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.PP
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.in +1c
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.in +1c
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.ti -1c
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.RI "#define \fBsei\fP()"
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.br
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.ti -1c
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.RI "#define \fBcli\fP()"
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.br
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.in -1c
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.in -1c
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.PP
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.RI "\fBMacros for writing interrupt handler functions\fP"
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.br
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.PP
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.in +1c
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.in +1c
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.ti -1c
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.RI "#define \fBISR\fP(vector, attributes)"
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.br
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.ti -1c
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.RI "#define \fBSIGNAL\fP(vector)"
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.br
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.ti -1c
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.RI "#define \fBEMPTY_INTERRUPT\fP(vector)"
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.br
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.ti -1c
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.RI "#define \fBISR_ALIAS\fP(vector, target_vector)"
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.br
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.ti -1c
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.RI "#define \fBreti\fP()"
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.br
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.ti -1c
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.RI "#define \fBBADISR_vect\fP"
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.br
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.in -1c
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.in -1c
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.PP
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.RI "\fBISR attributes\fP"
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.br
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.PP
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.in +1c
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.in +1c
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.ti -1c
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.RI "#define \fBISR_BLOCK\fP"
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.br
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.ti -1c
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.RI "#define \fBISR_NOBLOCK\fP"
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.br
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.ti -1c
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.RI "#define \fBISR_NAKED\fP"
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.br
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.ti -1c
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.RI "#define \fBISR_ALIASOF\fP(target_vector)"
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.br
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.in -1c
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.in -1c
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.SH "Detailed Description"
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.PP
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@{
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.SH "Author"
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.PP
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Generated automatically by Doxygen for avr-libc from the source code.
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