From 79b1ba7104dba52dbfacf11a07305702889f440b Mon Sep 17 00:00:00 2001 From: Paul Selkirk Date: Mon, 11 Apr 2016 14:44:44 -0400 Subject: Reorganize Makefile and directory structure, because it's messy, and it's about to get messier. --- projects/libhal-test/gettimeofday.c | 63 +++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 projects/libhal-test/gettimeofday.c (limited to 'projects/libhal-test/gettimeofday.c') diff --git a/projects/libhal-test/gettimeofday.c b/projects/libhal-test/gettimeofday.c new file mode 100644 index 0000000..b13485d --- /dev/null +++ b/projects/libhal-test/gettimeofday.c @@ -0,0 +1,63 @@ +/* + * 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 + +#include "stm32f4xx_hal.h" + +/* Don't #include 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; +} -- cgit v1.2.3