/** ****************************************************************************** * @addtogroup OpenPilot library * @brief These files contain the code for stopwatch handling. * * @file stopwatch.h * @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014. * @brief Generic pios_delay based stopwatch functions. * @see The GNU Public License (GPL) Version 3 * *****************************************************************************/ /* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef _STOPWATCH_H #define _STOPWATCH_H #include #include ///////////////////////////////////////////////////////////////////////////// // Global definitions ///////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////// // Global Types ///////////////////////////////////////////////////////////////////////////// typedef struct { uint32_t raw; uint32_t resolution; } stopwatch_t; ///////////////////////////////////////////////////////////////////////////// // Prototypes ///////////////////////////////////////////////////////////////////////////// inline int32_t STOPWATCH_Init(uint32_t resolution, stopwatch_t *stopwatch) { stopwatch->raw = PIOS_DELAY_GetRaw(); stopwatch->resolution = resolution; return 0; // no error } ///////////////////////////////////////////////////////////////////////////// // ! Resets the stopwatch // ! \return < 0 on errors ///////////////////////////////////////////////////////////////////////////// inline int32_t STOPWATCH_Reset(stopwatch_t *stopwatch) { stopwatch->raw = PIOS_DELAY_GetRaw(); return 0; // no error } ///////////////////////////////////////////////////////////////////////////// // ! Returns current value of stopwatch // ! \return stopwatch value ///////////////////////////////////////////////////////////////////////////// inline uint32_t STOPWATCH_ValueGet(stopwatch_t *stopwatch) { uint32_t value = PIOS_DELAY_GetuSSince(stopwatch->raw); if (stopwatch > 1) { value = value / stopwatch->resolution; } return value; } ///////////////////////////////////////////////////////////////////////////// // Export global variables ///////////////////////////////////////////////////////////////////////////// #endif /* _STOPWATCH_H */