File content as of revision 7:c07c01c2a741:

#ifndef __LOG__H__
#define __LOG__H__


#ifdef LOG_LEVEL_VERBOSE
    #define __PUCK_LOG_LEVEL_VERBOSE__
#endif
#ifdef LOG_LEVEL_DEBUG
    #define __PUCK_LOG_LEVEL_DEBUG__
#endif
#ifdef LOG_LEVEL_INFO
    #define __PUCK_LOG_LEVEL_INFO__
#endif
#ifdef LOG_LEVEL_WARN
    #define __PUCK_LOG_LEVEL_WARN__
#endif
#ifdef LOG_LEVEL_ERROR
    #define __PUCK_LOG_LEVEL_ERROR__
#endif

#ifdef __PUCK_LOG_LEVEL_VERBOSE__
    #define LOG_VERBOSE(fmt, ...) do { logger.printf("[V] "); logger.printf(fmt, ##__VA_ARGS__); } while(0)
    #define __PUCK_LOG_LEVEL_DEBUG__
#else
    #define LOG_VERBOSE(fmt, ...)
#endif

#ifdef __PUCK_LOG_LEVEL_DEBUG__
    #define LOG_DEBUG(fmt, ...) do {  logger.printf("[D] "); logger.printf(fmt, ##__VA_ARGS__); } while(0)
    #define __PUCK_LOG_LEVEL_INFO__
#else
    #define LOG_DEBUG(fmt, ...)
#endif

#ifdef __PUCK_LOG_LEVEL_INFO__
    #define LOG_INFO(fmt, ...) do {  logger.printf("[I] "); logger.printf(fmt, ##__VA_ARGS__); } while(0)
    #define __PUCK_LOG_LEVEL_WARN__
#else
    #define LOG_INFO(fmt, ...)
#endif

#ifdef __PUCK_LOG_LEVEL_WARN__
    #define LOG_WARN(fmt, ...) do {  logger.printf("![W] "); logger.printf(fmt, ##__VA_ARGS__); } while(0)
    #define __PUCK_LOG_LEVEL_ERROR__
#else
    #define LOG_WARN(fmt, ...)
#endif

#ifdef __PUCK_LOG_LEVEL_ERROR__
    #define LOG_ERROR(fmt, ...) do {  logger.printf("!![E] "); logger.printf(fmt, ##__VA_ARGS__); } while(0)
#else
    #define LOG_ERROR(fmt, ...)
#endif

#ifdef __PUCK_LOG_LEVEL_ERROR__
    static Serial logger(USBTX, USBRX);
#endif


#endif //__LOG__H__