bspIo.h File Reference

Interface to Kernel Print Methods. More...

#include <rtems/score/basedefs.h>
#include <stdarg.h>

Go to the source code of this file.

Typedefs
typedef void(*	BSP_output_char_function_type) (char c)
typedef int(*	BSP_polling_getchar_function_type) (void)

Functions
int	getchark (void)
	Get Character (kernel I/O) More...
int	vprintk (const char *fmt, va_list ap)
	Variable Argument printk() More...
int	rtems_printk_printer (void *ignored, const char *format, va_list ap)
int	printk (const char *fmt,...) RTEMS_PRINTFLIKE(1
	Kernel Print. More...
int int	putk (const char *s)
	Kernel Put String. More...
void	rtems_putc (char c)
	Kernel Put Character. More...

Variables
BSP_output_char_function_type	BSP_output_char
BSP_polling_getchar_function_type	BSP_poll_char

Detailed Description

Interface to Kernel Print Methods.

This include file defines the interface to kernel print methods.

Typedef Documentation

BSP_output_char_function_type

typedef void(* BSP_output_char_function_type) (char c)

This type defines the prototype for the BSP provided method to print a single character. It is assumed to be polled.

BSP_polling_getchar_function_type

typedef int(* BSP_polling_getchar_function_type) (void)

This type defines the prototype for the BSP provided method to input a single character. It is assumed to be polled.

Function Documentation

getchark()

int getchark

(

void

)

Get Character (kernel I/O)

This method polls for a key in the simplest possible fashion from whatever the debug console device is.

Returns

If a character is available, it is returned. Otherwise this method returns -1.

Note

This method uses the BSP_poll_char pointer to a BSP provided method.

printk()

int printk	(	const char *	fmt,
			...
	)

Kernel Print.

This method allows the user to perform a debug printk(). It performs a character translation from "\n" to "\r\n".

Parameters

[in]

fmt

is a printf()-style format string

Returns

The number of characters output.

putk()

int int putk

(

const char *

s

)

Kernel Put String.

This method allows the user to perform a debug puts().

Parameters

[in]

s

is the string to print

Returns

The number of characters output.

Kernel putk (e.g. puts) function requiring minimal infrastrure.

rtems_putc()

void rtems_putc

(

char

c

)

Kernel Put Character.

This method allows the user to perform a debug putc(). It performs a character translation from "\n" to "\r\n".

Parameters

[in]

c

is the character to print

vprintk()

int vprintk	(	const char *	fmt,
		va_list	ap
	)

Variable Argument printk()

This method allows the user to access printk() functionality with a va_list style argument.

Parameters

[in]	fmt	is a printf()-style format string
[in]	ap	is a va_list pointer to arguments

Returns

The number of characters output.

Variable Documentation

BSP_output_char

BSP_output_char_function_type BSP_output_char

This variable points to the BSP provided method to output a character for the purposes of debug output.

It must output only the specific character. It must not perform character translations, e.g. "\n" to "\r\n".

BSP_poll_char

BSP_polling_getchar_function_type BSP_poll_char

This variable points to the BSP provided method to input a character for the purposes of debug input.