109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
|
|
2011,2012 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT 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.
|
|
|
|
ChibiOS/RT 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/**
|
|
* @file Posix/hal_lld.c
|
|
* @brief Posix HAL subsystem low level driver code.
|
|
*
|
|
* @addtogroup POSIX_HAL
|
|
* @{
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "ch.h"
|
|
#include "hal.h"
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
static struct timeval nextcnt;
|
|
static struct timeval tick = {0, 1000000 / CH_FREQUENCY};
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level HAL driver initialization.
|
|
*/
|
|
void hal_lld_init(void) {
|
|
|
|
#if defined(__APPLE__)
|
|
puts("ChibiOS/RT simulator (OS X)\n");
|
|
#else
|
|
puts("ChibiOS/RT simulator (Linux)\n");
|
|
#endif
|
|
gettimeofday(&nextcnt, NULL);
|
|
timeradd(&nextcnt, &tick, &nextcnt);
|
|
}
|
|
|
|
/**
|
|
* @brief Interrupt simulation.
|
|
*/
|
|
void ChkIntSources(void) {
|
|
struct timeval tv;
|
|
|
|
#if HAL_USE_SERIAL
|
|
if (sd_lld_interrupt_pending()) {
|
|
dbg_check_lock();
|
|
if (chSchIsPreemptionRequired())
|
|
chSchDoReschedule();
|
|
dbg_check_unlock();
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
gettimeofday(&tv, NULL);
|
|
if (timercmp(&tv, &nextcnt, >=)) {
|
|
timeradd(&nextcnt, &tick, &nextcnt);
|
|
|
|
CH_IRQ_PROLOGUE();
|
|
|
|
chSysLockFromIsr();
|
|
chSysTimerHandlerI();
|
|
chSysUnlockFromIsr();
|
|
|
|
CH_IRQ_EPILOGUE();
|
|
|
|
dbg_check_lock();
|
|
if (chSchIsPreemptionRequired())
|
|
chSchDoReschedule();
|
|
dbg_check_unlock();
|
|
}
|
|
}
|
|
|
|
/** @} */
|