system.h File Reference

NDS hardware definitions. More...

#include "ndstypes.h"

Data Structures
struct	__argv
	argv structure More...
struct	tPERSONAL_DATA
	User's DS settings. More...
Defines
#define	__system_argv   ((struct __argv *)0x02FFFE70)
	Default location for the libnds argv structure.
#define	HALT_CR   (*(vu16*)0x04000300)
	Halt control register.
#define	PersonalData   ((PERSONAL_DATA*)0x2FFFC80)
	Default location for the user's personal data (see PERSONAL_DATA).
#define	REG_DISPSTAT   (*(vu16*)0x04000004)
	LCD status register.
#define	REG_POWERCNT   *(vu16*)0x4000304
	Power control register.
#define	REG_VCOUNT   (*(vu16*)0x4000006)
	Current display scanline.
Enumerations
enum	ARM7_power {   POWER_SOUND = (1 << ( 0 )),   PM_CONTROL_REG = 0,   PM_BATTERY_REG = 1,   PM_AMPLIFIER_REG = 2,   PM_READ_REGISTER = (1<<7),   PM_AMP_OFFSET = 2,   PM_GAIN_OFFSET = 3,   PM_GAIN_20 = 0,   PM_GAIN_40 = 1,   PM_GAIN_80 = 2,   PM_GAIN_160 = 3,   PM_AMP_ON = 1,   PM_AMP_OFF = 0 }
	Power-controlled hardware devices accessable to the ARM7. More...
enum	DISP_BITS { ,   DISP_IN_HBLANK = (1 << ( 1 )),   DISP_YTRIGGERED = (1 << ( 2 )),   DISP_VBLANK_IRQ = (1 << ( 3 )),   DISP_HBLANK_IRQ = (1 << ( 4 )),   DISP_YTRIGGER_IRQ = (1 << ( 5 )) }
	LCD Status register bitdefines. More...
enum	PM_Bits {   PM_SOUND_AMP = (1 << ( 0 )),   PM_SOUND_MUTE = (1 << ( 1 )),   PM_BACKLIGHT_BOTTOM = (1 << ( 2 )),   PM_BACKLIGHT_TOP = (1 << ( 3 )),   PM_SYSTEM_PWR = (1 << ( 6 )),   POWER_LCD = (1 << ( 16 )) | (1 << ( 0 )),   POWER_2D_A = (1 << ( 16 )) | (1 << ( 1 )),   POWER_MATRIX = (1 << ( 16 )) | (1 << ( 2 )),   POWER_3D_CORE = (1 << ( 16 )) | (1 << ( 3 )),   POWER_2D_B = (1 << ( 16 )) | (1 << ( 9 )),   POWER_SWAP_LCDS = (1 << ( 16 )) | (1 << ( 15 )),   POWER_ALL_2D = (1 << ( 16 )) | POWER_LCD | POWER_2D_A | POWER_2D_B,   POWER_ALL = (1 << ( 16 )) | POWER_ALL_2D | POWER_3D_CORE | POWER_MATRIX }
	Power Management control bits. More...
Functions
static void	lcdMainOnBottom (void)
	Forces the main core to display on the bottom.
static void	lcdMainOnTop (void)
	Forces the main core to display on the top.
static void	lcdSwap (void)
	Switches the screens.
void	ledBlink (int bm)
	Set the LED blink mode.
void	powerOff (int bits)
	Turns off specified hardware.
void	powerOn (int bits)
	Turns on specified hardware.
void	setVectorBase (int highVector)
	Set the arm9 vector base.

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Detailed Description

NDS hardware definitions.

These definitions are usually only touched during the initialization of the program.

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Define Documentation

#define HALT_CR   (*(vu16*)0x04000300)

Halt control register.

Writing 0x40 to HALT_CR activates GBA mode. HALT_CR can only be accessed via the BIOS.

#define REG_POWERCNT   *(vu16*)0x4000304

Power control register.

This register controls what hardware should be turned on or off.

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Enumeration Type Documentation

enum ARM7_power

Power-controlled hardware devices accessable to the ARM7.

Note that these should only be used when programming for the ARM7. Trying to boot up these hardware devices via the ARM9 would lead to unexpected results.

Enumerator:

POWER_SOUND	Controls the power for the sound controller.
PM_CONTROL_REG	Selects the PM control register.
PM_BATTERY_REG	Selects the PM nattery register.
PM_AMPLIFIER_REG	Selects the PM amplifier register.
PM_READ_REGISTER	Selects the PM read register.
PM_AMP_OFFSET	Selects the PM amp register.
PM_GAIN_OFFSET	Selects the PM gain register.
PM_GAIN_20	Sets the mic gain to 20db.
PM_GAIN_40	Sets the mic gain to 40db.
PM_GAIN_80	Sets the mic gain to 80db.
PM_GAIN_160	Sets the mic gain to 160db.
PM_AMP_ON	Turns the sound amp on.
PM_AMP_OFF	Turns the sound amp off.

enum DISP_BITS

LCD Status register bitdefines.

Enumerator:

DISP_IN_HBLANK	The display currently in a vertical blank.
DISP_YTRIGGERED	The display currently in a horizontal blank.
DISP_VBLANK_IRQ	Current scanline and DISP_Y match.
DISP_HBLANK_IRQ	Interrupt on vertical blank.
DISP_YTRIGGER_IRQ	Interrupt on horizontal blank.

enum PM_Bits

Power Management control bits.

Enumerator:

PM_SOUND_AMP	Power the sound hardware (needed to hear stuff in GBA mode too).
PM_SOUND_MUTE	Mute the main speakers, headphone output will still work.
PM_BACKLIGHT_BOTTOM	Enable the top backlight if set.
PM_BACKLIGHT_TOP	Enable the bottom backlight if set.
PM_SYSTEM_PWR	Turn the power *off* if set.
POWER_LCD	Controls the power for both LCD screens.
POWER_2D_A	Controls the power for the main 2D core.
POWER_MATRIX	Controls the power for the 3D matrix.
POWER_3D_CORE	Controls the power for the main 3D core.
POWER_2D_B	Controls the power for the sub 2D core.
POWER_SWAP_LCDS	Controls which screen should use the main core.
POWER_ALL_2D	power just 2D hardware
POWER_ALL	power everything

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Function Documentation

void ledBlink

(

int

bm

)

Set the LED blink mode.

Arm9 only

Parameters:

bm

What to power on.

void powerOff

(

int

bits

)

Turns off specified hardware.

May be called from arm7 or arm9 (arm9 power bits will be ignored by arm7, arm7 power bits will be passed to the arm7 from the arm9).

Parameters:

bits

What to power on.

void powerOn

(

int

bits

)

Turns on specified hardware.

May be called from arm7 or arm9 (arm9 power bits will be ignored by arm7, arm7 power bits will be passed to the arm7 from the arm9).

Parameters:

bits

What to power on.

void setVectorBase

(

int

highVector

)

Set the arm9 vector base.

Arm9 only

Parameters:

highVector

high vector