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-rw-r--r--gettimeofday.c63
1 files changed, 0 insertions, 63 deletions
diff --git a/gettimeofday.c b/gettimeofday.c
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-/*
- * gettimeofday.c
- * --------------
- * A simple implementation of gettimeofday() for CMSIS.
- * This assumes a 1ms SysTick. It obviously does not return the absolute time,
- * just the time since boot, but it's only used to calculate elapsed time in
- * code we're porting from unix.
- *
- * Copyright (c) 2015, NORDUnet A/S All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * - Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * - Neither the name of the NORDUnet nor the names of its contributors may
- * be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
- * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <stdint.h>
-
-#include "stm32f4xx_hal.h"
-
-/* Don't #include <sys/time.h> because of conflicting prototype in newlib. */
-
-/* from the manpage */
-struct timeval {
- time_t tv_sec; /* seconds */
- suseconds_t tv_usec; /* microseconds */
-};
-
-struct timezone {
- int tz_minuteswest; /* minutes west of Greenwich */
- int tz_dsttime; /* type of DST correction */
-};
-
-int gettimeofday(struct timeval *tv, struct timezone *tz)
-{
- uint32_t tick = HAL_GetTick(); /* uptime in ms */
-
- tv->tv_sec = tick / 1000;
- tv->tv_usec = (tick % 1000) * 1000;
-
- return 0;
-}