macro.h File Reference

---

Detailed Description

Macro file for AVR32.

This file defines macros for accessing system registers on AVR32 devices.

• File: macro.h
• Compiler: All
• Supported devices: All AVR32 devices can be used.

• AppNote: AVR32000 - Header files for AVR32

Author:

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

Revision

43

Date

2006-03-22 09:10:05 +0100 (Wed, 22 Mar 2006)

Definition in file macro.h.

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Defines
#define	CLEARBIT(sregister, bitname)
	define which clears a bit in system registers
#define	CLRBIT(sregister, bitname)   CLEARBIT(sregister, bitname)
#define	GETBITS(sregister, return_value)   READBITS(sregister, return_value)
#define	READBITS(sregister, return_value)
	define to read a given system registers
#define	SETBIT(sregister, bitname)
	define which sets a bit in system registers
#define	TGLBIT(sregister, bitname)   TOGGLEBIT(sregister, bitname)
#define	TOGGLEBIT(sregister, bitname)
	define which toggles a bit in system registers

---

Define Documentation

#define CLEARBIT	(	sregister,
		bitname		)

Value:

__asm__( "st.w sp++, r7\n" \
                        "mfsr r7, %0\n" \
                        "cbr r7, %1\n" \
                        "mtsr %0, r7\n" \
                        "ld.w r7, --sp\n" \
                        : \
                        :"X"(sregister), "g"(bitname) )

define which clears a bit in system registers

First store the r7 register on the stack and increment the pointer. Then load the system register

Parameters:

	sregister,clear	the bit
	bitname,store	the system register and load value from stack to r7 and deincrement.

Definition at line 49 of file macro.h.

#define CLRBIT	(	sregister,
		bitname		)	CLEARBIT(sregister, bitname)

Definition at line 58 of file macro.h.

#define GETBITS	(	sregister,
		return_value		)	READBITS(sregister, return_value)

Definition at line 100 of file macro.h.

#define READBITS	(	sregister,
		return_value		)

Value:

__asm__ __volatile__( "st.w sp++, r6\n" \
                        "mfsr r6, %1\n" \
                        "st.w %0, r6\n" \
                        "ld.w r6, --sp\n" \
                        : "=g"(return_value) \
                        :"X"(sregister) )

define to read a given system registers

Store r6 register on stack and increment pointer. Then load the system register

Parameters:

	sregister	and store this value in the
	return_value	before loading value from stack and deincrement r7.

Definition at line 92 of file macro.h.

#define SETBIT	(	sregister,
		bitname		)

Value:

__asm__( "st.w sp++, r7\n" \
                        "mfsr r7, %0\n" \
                        "sbr r7, %1\n" \
                        "mtsr %0, r7\n" \
                        "ld.w r7, --sp\n" \
                        : \
                        :"X"(sregister), "g"(bitname) )

define which sets a bit in system registers

First store the r7 register on the stack and increment the pointer. Then load the system register

Parameters:

	sregister,set	the bit
	bitname,store	the system register and load value from stack to r7 and deincrement.

Definition at line 31 of file macro.h.

#define TGLBIT	(	sregister,
		bitname		)	TOGGLEBIT(sregister, bitname)

Definition at line 82 of file macro.h.

#define TOGGLEBIT	(	sregister,
		bitname		)

Value:

__asm__( "st.w sp++, r7\n" \
                        "st.w sp++, r6\n" \
                        "mfsr r7, %0\n" \
                        "mov r6, 0\n" \
                        "sbr r6, %1\n" \
                        "eor r7, r6\n" \
                        "mtsr %0, r7\n" \
                        "ld.w r6, --sp\n" \
                        "ld.w r7, --sp\n" \
                        : \
                        :"X"(sregister), "g"(bitname) )

define which toggles a bit in system registers

First store the r7 register on the stack and increment the pointer. Then load the system register

Parameters:

	sregister,toggle	the bit
	bitname	by using an exclusive or, store the system register and load value from stack to r7 and deincrement.

Definition at line 69 of file macro.h.

---