mirror of
https://bitbucket.org/librepilot/librepilot.git
synced 2024-12-12 20:08:48 +01:00
a1a3b0774f
find ./flight/AHRS/ \! \( -name '*~' -a -prune \) -type f | xargs -I{} bash -c 'echo {}; dos2unix {}; gnuindent -npro -kr -i8 -ts8 -sob -ss -ncs -cp1 -il0 {};' git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1707 ebee16cc-31ac-478f-84a7-5cbb03baadba
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/**
|
|
******************************************************************************
|
|
* @addtogroup AHRS AHRS Control
|
|
* @brief The AHRS Modules perform
|
|
*
|
|
* @{
|
|
* @addtogroup AHRS_TIMER
|
|
* @brief Sets up a simple timer that can be polled to estimate idle time
|
|
* @{
|
|
*
|
|
*
|
|
* @file ahrs.c
|
|
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
|
|
* @brief INSGPS Test Program
|
|
* @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
|
|
*/
|
|
|
|
#include "ahrs_timer.h"
|
|
|
|
void timer_start()
|
|
{
|
|
RCC_APB1PeriphClockCmd(RCC_APB1Periph_BKP | RCC_APB1Periph_PWR,
|
|
ENABLE);
|
|
PWR_BackupAccessCmd(ENABLE);
|
|
|
|
RCC_RTCCLKConfig(RCC_RTCCLKSource_HSE_Div128);
|
|
RCC_RTCCLKCmd(ENABLE);
|
|
RTC_WaitForLastTask();
|
|
RTC_WaitForSynchro();
|
|
RTC_WaitForLastTask();
|
|
RTC_SetPrescaler(0); // counting at 8e6 / 128
|
|
RTC_WaitForLastTask();
|
|
RTC_SetCounter(0);
|
|
RTC_WaitForLastTask();
|
|
}
|
|
|
|
uint32_t timer_count()
|
|
{
|
|
return RTC_GetCounter();
|
|
}
|
|
|
|
uint32_t timer_rate()
|
|
{
|
|
return TIMER_RATE;
|
|
}
|