stdio.h File Reference

stdio standard header file. More...

#include <Lazuli/common.h>

Go to the source code of this file.

Macros
#define	EOF   ((int)-1)
	Defines the End-Of-File constant.

Functions
int	printf (const char *format,...)
	Produce unbuffered formatted output to the serial line.
int	putchar (int c)
	Transmit a single character on the serial line.
int	puts (const char *s)
	Transmit the NUL-terminated string s followed by a trailing newline on the serial line, without any formatting.

Detailed Description

stdio standard header file.

Copyright

2020, Remi Andruccioli remi..nosp@m.andr.nosp@m.uccio.nosp@m.li@g.nosp@m.mail..nosp@m.com

This is the standard libc stdio header file for the Lazuli system.

Definition in file stdio.h.

Macro Definition Documentation

EOF

#define EOF   ((int)-1)

Defines the End-Of-File constant.

Definition at line 24 of file stdio.h.

Function Documentation

printf()

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

Produce unbuffered formatted output to the serial line.

This function is fully reentrant.

Flag characters

0 The value should be zero-padded.

Field width

A decimal digit string can be used to specify a minimum field width.

Conversion specifiers

The following conversion specifiers are currently allowed:

d, i The int argument is converted to decimal.

u The unsigned int argument is converted to decimal.

% The character '' is output.

Parameters

format	The format string.
...	The variadic parameters.

Returns

The number of characters output to the serial line, or a negative value if an error occurred.

Warning

The stack usage of this function is important. No locking mechanism is provided.

Definition at line 191 of file printf.c.

putchar()

int putchar

(

int

c

)

Transmit a single character on the serial line.

Parameters

c	The character to transmit, that will be cast to an unsigned char.

Returns

The actual value of the transmitted character, resulting from the cast, as an int.

Warning

This operation is not thread safe. No locking mechanism is provided.

Definition at line 40 of file usart.c.

puts()

int puts

(

const char *

s

)

Transmit the NUL-terminated string s followed by a trailing newline on the serial line, without any formatting.

Parameters

s	The string to transmit.

Returns

A non-negative number on success, otherwise EOF on error.

Warning

This operation is not thread safe. No locking mechanism is provided.

Definition at line 52 of file usart.c.