tmk_core/tool/mbed/mbed-sdk/libraries/mbed/api/mbed_debug.h

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #ifndef MBED_DEBUG_H
  17 #define MBED_DEBUG_H
  18 #include "device.h"
  19
  20 #ifdef __cplusplus
  21 extern "C" {
  22 #endif
  23
  24 #if DEVICE_STDIO_MESSAGES
  25 #include <stdio.h>
  26 #include <stdarg.h>
  27
  28 /** Output a debug message
  29  *
  30  * @param format printf-style format string, followed by variables
  31  */
  32 static inline void debug(const char *format, ...) {
  33     va_list args;
  34     va_start(args, format);
  35     vfprintf(stderr, format, args);
  36     va_end(args);
  37 }
  38
  39 /** Conditionally output a debug message
  40  *
  41  * NOTE: If the condition is constant false (!= 1) and the compiler optimization
  42  * level is greater than 0, then the whole function will be compiled away.
  43  *
  44  * @param condition output only if condition is true (== 1)
  45  * @param format printf-style format string, followed by variables
  46  */
  47 static inline void debug_if(int condition, const char *format, ...) {
  48     if (condition == 1) {
  49         va_list args;
  50         va_start(args, format);
  51         vfprintf(stderr, format, args);
  52         va_end(args);
  53     }
  54 }
  55
  56 #else
  57 static inline void debug(const char *format, ...) {}
  58 static inline void debug_if(int condition, const char *format, ...) {}
  59
  60 #endif
  61
  62 #ifdef __cplusplus
  63 }
  64 #endif
  65
  66 #endif