avr_compiler.h File Reference

This file implements some macros that makes the IAR C-compiler and avr-gcc work with the same code base for the AVR architecture. More...

#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>

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Defines
#define	ENTER_CRITICAL_REGION()
#define	LEAVE_CRITICAL_REGION()   SREG = saved_sreg;

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Detailed Description

This file implements some macros that makes the IAR C-compiler and avr-gcc work with the same code base for the AVR architecture.

Application note:

AVR1321: Using the XMEGA 32-bit RTC

Documentation

For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html

Author:

Atmel Corporation: http://www.atmel.com
Support email: avr@atmel.com

Revision

112

Date

2009-11-18 14:31:39 +0800 (ÐÇÆÚÈý, 18 ʮһÔ 2009)

Definition in file avr_compiler.h.

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Define Documentation

 

#define ENTER_CRITICAL_REGION

(

)

Value:

uint8_t volatile saved_sreg = SREG; \
                                     cli();

This macro will protect the following code from interrupts.

Definition at line 62 of file avr_compiler.h.

Referenced by chip_init(), and vbat_reset().

 

#define LEAVE_CRITICAL_REGION

(

)

SREG = saved_sreg;

This macro must always be used in conjunction with ENTER_CRITICAL_REGION so that interrupts are enabled again.

Definition at line 67 of file avr_compiler.h.

Referenced by chip_init(), and vbat_reset().