elu_stdio.h File Reference

#include "el_common.h"
#include "el_uart.h"

Go to the source code of this file.

Macros
#define	_SNPRINTF_FAMILY   __attribute__ ((format(printf,3,4)))
#define	_SSCANF_FAMILY   __attribute__ ((format(scanf,2,3)))
#define	_PRINTF_FAMILY   __attribute__ ((format(printf,1,2)))
#define	_SCANF_FAMILY   __attribute__ ((format(scanf,1,2)))

Functions
int	elu_snprintf (char *s, unsigned int n, const char *format,...) _SNPRINTF_FAMILY
	snprintf to be used here More...
int	elu_sscanf (const char *s, const char *format,...) _SSCANF_FAMILY
	sscanf to be used here More...
int	elu_printf (const char *format,...) _PRINTF_FAMILY
	send a string with data fields to UART1 More...
int	elu_println (const char *format,...) _PRINTF_FAMILY
	send a string with data fields + a newline char to UART1 More...
int	elu_scanf (const char *format,...) _SCANF_FAMILY
	scanf to be used here More...
void	elu_scanf_set_echo (bool k)
	configure whether elu_scanf echo the character received More...
int	elu_putchar (int c)

Detailed Description

Author

Jianing Chen

Function Documentation

int elu_snprintf	(	char *	s,
		unsigned int	n,
		const char *	format,
			...
	)

snprintf to be used here

Returns

length of the string

int elu_sscanf	(	const char *	s,
		const char *	format,
			...
	)

sscanf to be used here

Returns

number of data field successfuly scanned

int elu_printf	(	const char *	format,
			...
	)

send a string with data fields to UART1

Parameters

format

same rule as the format string of "printf"

Returns

length of the string with data formatted

int elu_println	(	const char *	format,
			...
	)

send a string with data fields + a newline char to UART1

Parameters

format

same rule as the format string of "printf"

Returns

length of the string with data formatted

int elu_scanf	(	const char *	format,
			...
	)

scanf to be used here

Parameters

format

same rule as the format string of "scanf"

Returns

number of data field successfuly scanned

This function behaves similarly to the "scanf": it receives and stores characters. When a carriage return (the Enter key) occurs, this function analyzes the string and returns.

void elu_scanf_set_echo

(

bool

k

)

configure whether elu_scanf echo the character received

Parameters

k	echo or not