Debugging Support. More...

Macros
#define	ISVIEWER_WRITE_LEN ((volatile uint32_t *)0xB3FF0014)

#define	ISVIEWER_BUFFER ((volatile uint32_t *)0xB3FF0020)

#define	ISVIEWER_BUFFER_LEN 0x00000200

#define	MAX_FAT_FILES 4

Functions
void	__debug_backtrace (FILE *out, bool skip_exception)
	internal backtrace printing function

bool	debug_init_usblog (void)
	Initialize USB logging.

bool	debug_init_isviewer (void)
	Initialize ISViewer logging.

bool	debug_init_sdlog (const char fn, const char openfmt)
	Initialize SD logging.

bool	debug_init_sdfs (const char *prefix, int npart)
	Initialize SD filesystem.

void	debug_close_sdfs (void)
	Shutdown SD filesystem.

void	debug_assert_func_f (const char file, int line, const char func, const char failedexpr, const char msg,...)
	Underlying implementation function for assert() and assertf.

void	debug_assert_func (const char file, int line, const char func, const char *failedexpr)
	Assertion function that is registered into system.c at startup.

void	debug_hexdump (const void *vbuf, int size)
	Do a hexdump of the specified buffer via debugf. More...

void	debug_backtrace (void)
	Dump a backtrace (call stack) via debugf. More...

Detailed Description

Debugging Support.

Macro Definition Documentation

◆ ISVIEWER_WRITE_LEN

#define ISVIEWER_WRITE_LEN ((volatile uint32_t *)0xB3FF0014)

ISViewer register for buffer write length

◆ ISVIEWER_BUFFER

#define ISVIEWER_BUFFER ((volatile uint32_t *)0xB3FF0020)

ISViewer buffer

◆ ISVIEWER_BUFFER_LEN

#define ISVIEWER_BUFFER_LEN 0x00000200

ISViewer buffer length

◆ MAX_FAT_FILES

#define MAX_FAT_FILES 4

Maximum number of FAT files that can be concurrently opened

Function Documentation

◆ debug_hexdump()

void debug_hexdump	(	const void *	buffer,
		int	size
	)

Do a hexdump of the specified buffer via debugf.

This is useful to dump a binary buffer for debugging purposes. The hexdump shown contains both the hexadecimal and ASCII values, similar to what hex editors do.

Sample output:

0000  80 80 80 80 80 80 80 80  80 80 80 80 80 80 80 80   |................|
0010  45 67 cd ef aa aa aa aa  aa aa aa aa aa aa aa aa   |Eg..............| 
0020  9a bc 12 34 80 80 80 80  80 80 80 80 80 80 80 80   |...4............|
0030  aa aa aa aa aa aa aa aa  ef 01 67 89 aa aa aa aa   |..........g.....|
0040  80 80 80 80 80 80 80 80  00 00 00 00 80 80 80 80   |................|

Parameters

[in]	buffer	Buffer to dump
[in]	size	Size of the buffer in bytes

◆ debug_backtrace()

void debug_backtrace ( void )

Dump a backtrace (call stack) via debugf.

This function will dump the current call stack to the debugging channel. It is useful to understand where the program is currently executing, and to understand the context of an error.

The implementation of this function relies on the lower level backtrace and backtrace_symbols functions, which are implemented in libdragon itself via a symbol table embedded in the ROM. See backtrace_symbols for more information.

See also: backtrace; backtrace_symbols

Macros

Functions