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platform/mbed_debug.h

Committer:
kaoshen
Date:
2017-01-17
Revision:
135:fce8a9387ed1
Parent:
128:9bcdf88f62b0

File content as of revision 135:fce8a9387ed1:


/** \addtogroup platform */
/** @{*/
/* mbed Microcontroller Library
 * Copyright (c) 2006-2013 ARM Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef MBED_DEBUG_H
#define MBED_DEBUG_H
#include "device.h"

#ifdef __cplusplus
extern "C" {
#endif

#if DEVICE_STDIO_MESSAGES
#include <stdio.h>
#include <stdarg.h>

/** Output a debug message
 *
 * @param format printf-style format string, followed by variables
 */
static inline void debug(const char *format, ...) {
    va_list args;
    va_start(args, format);
    vfprintf(stderr, format, args);
    va_end(args);
}

/** Conditionally output a debug message
 *
 * NOTE: If the condition is constant false (!= 1) and the compiler optimization
 * level is greater than 0, then the whole function will be compiled away.
 *
 * @param condition output only if condition is true (== 1)
 * @param format printf-style format string, followed by variables
 */
static inline void debug_if(int condition, const char *format, ...) {
    if (condition == 1) {
        va_list args;
        va_start(args, format);
        vfprintf(stderr, format, args);
        va_end(args);
    }
}

#else
static inline void debug(const char *format, ...) {}
static inline void debug_if(int condition, const char *format, ...) {}

#endif

#ifdef __cplusplus
}
#endif

#endif

/** @}*/