GBA Debug Output

Debug output driver for GBA LCD Screen. More...

Collaboration diagram for GBA Debug Output:

Defines
#define	PALRAM_BASE   0x05000000
#define	VIDRAM_BASE   0x06000000
#define	LCD_COLS   30
#define	LCD_ROWS   20
#define	LCD_MCOLS   32
#define	LCD_MROWS   64
Functions
int	DebugIOCtl (NUTDEVICE *dev, int req, void *conf)
	Handle I/O controls for debug device 0.
int	DebugInit (NUTDEVICE *dev)
	Initialize debug device 0.
int	DebugWrite (NUTFILE *fp, const void *buffer, int len)
	Send characters to debug device 0.
NUTFILE *	DebugOpen (NUTDEVICE *dev, const char *name, int mode, int acc)
	Open debug device 0.
int	DebugClose (NUTFILE *fp)
	Close debug device 0.
Variables
NUTDEVICE	devDebug0
	Debug device 0 information structure.

---

Detailed Description

Debug output driver for GBA LCD Screen.

---

Define Documentation

#define PALRAM_BASE   0x05000000

Referenced by DebugInit().

#define VIDRAM_BASE   0x06000000

Referenced by DebugInit().

#define LCD_COLS   30

#define LCD_ROWS   20

#define LCD_MCOLS   32

#define LCD_MROWS   64

---

Function Documentation

static int DebugIOCtl	(	NUTDEVICE *	dev,
		int	req,
		void *	conf
	)

Handle I/O controls for debug device 0.

The debug device doesn't support any.

Returns:

Always -1.

static int DebugInit

(

NUTDEVICE *

dev

)

Initialize debug device 0.

Returns:

Always 0.

References outw, PALRAM_BASE, REG_BG2CNT, REG_DISPCNT, and VIDRAM_BASE.

static int DebugWrite	(	NUTFILE *	fp,
		const void *	buffer,
		int	len
	)

Send characters to debug device 0.

A carriage return character will be automatically appended to any linefeed.

Returns:

Number of characters sent.

static NUTFILE * DebugOpen	(	NUTDEVICE *	dev,
		const char *	name,
		int	mode,
		int	acc
	)

Open debug device 0.

Returns:

Pointer to a static NUTFILE structure.

References _NUTFILE::nf_dev, _NUTFILE::nf_fcb, and _NUTFILE::nf_next.

static int DebugClose

(

NUTFILE *

fp

)

Close debug device 0.

Close a device or file.

Returns:

Always 0.

---

Variable Documentation

NUTDEVICE devDebug0

Initial value:

 {
    0,                          
    {'c', 'o', 'n', 0, 0, 0, 0, 0, 0},      
    0,                          
    0,                          
    0,                          
    0,                          
    0,                          
    DebugInit,                  
    DebugIOCtl,                 
    0,                          
    DebugWrite,                 
    DebugOpen,                  
    DebugClose,                 
    0                           
}

Debug device 0 information structure.