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/* printk.h - low-level debug output */
/*
* Copyright (c) 2010-2012, 2014 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_SYS_PRINTK_H_
#define ZEPHYR_INCLUDE_SYS_PRINTK_H_
#include <toolchain.h>
#include <stddef.h>
#include <stdarg.h>
#include <inttypes.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
*
* @brief Print kernel debugging message.
*
* This routine prints a kernel debugging message to the system console.
* Output is send immediately, without any mutual exclusion or buffering.
*
* A basic set of conversion specifier characters are supported:
* - signed decimal: \%d, \%i
* - unsigned decimal: \%u
* - unsigned hexadecimal: \%x (\%X is treated as \%x)
* - pointer: \%p
* - string: \%s
* - character: \%c
* - percent: \%\%
*
* Field width (with or without leading zeroes) is supported.
* Length attributes h, hh, l, ll and z are supported. However, integral
* values with %lld and %lli are only printed if they fit in a long
* otherwise 'ERR' is printed. Full 64-bit values may be printed with %llx.
* Flags and precision attributes are not supported.
*
* @param fmt Format string.
* @param ... Optional list of format arguments.
*/
#ifdef CONFIG_PRINTK
extern __printf_like(1, 2) void printk(const char *fmt, ...);
extern __printf_like(1, 0) void vprintk(const char *fmt, va_list ap);
#else
static inline __printf_like(1, 2) void printk(const char *fmt, ...)
{
ARG_UNUSED(fmt);
}
static inline __printf_like(1, 0) void vprintk(const char *fmt, va_list ap)
{
ARG_UNUSED(fmt);
ARG_UNUSED(ap);
}
#endif
extern __printf_like(3, 4) int snprintk(char *str, size_t size,
const char *fmt, ...);
extern __printf_like(3, 0) int vsnprintk(char *str, size_t size,
const char *fmt, va_list ap);
#ifdef __cplusplus
}
#endif
#endif