109 lines
3.3 KiB
C
109 lines
3.3 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012,2013 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file Posix/hal_lld.c
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* @brief Posix HAL subsystem low level driver code.
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*
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* @addtogroup POSIX_HAL
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* @{
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/time.h>
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#include "ch.h"
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#include "hal.h"
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/*===========================================================================*/
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/* Driver exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver local variables. */
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/*===========================================================================*/
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static struct timeval nextcnt;
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static struct timeval tick = {0, 1000000 / CH_FREQUENCY};
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/*===========================================================================*/
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/* Driver local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver interrupt handlers. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver exported functions. */
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/*===========================================================================*/
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/**
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* @brief Low level HAL driver initialization.
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*/
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void hal_lld_init(void) {
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#if defined(__APPLE__)
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puts("ChibiOS/RT simulator (OS X)\n");
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#else
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puts("ChibiOS/RT simulator (Linux)\n");
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#endif
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gettimeofday(&nextcnt, NULL);
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timeradd(&nextcnt, &tick, &nextcnt);
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}
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/**
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* @brief Interrupt simulation.
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*/
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void ChkIntSources(void) {
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struct timeval tv;
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#if HAL_USE_SERIAL
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if (sd_lld_interrupt_pending()) {
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dbg_check_lock();
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if (chSchIsPreemptionRequired())
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chSchDoReschedule();
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dbg_check_unlock();
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return;
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}
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#endif
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gettimeofday(&tv, NULL);
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if (timercmp(&tv, &nextcnt, >=)) {
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timeradd(&nextcnt, &tick, &nextcnt);
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CH_IRQ_PROLOGUE();
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chSysLockFromIsr();
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chSysTimerHandlerI();
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chSysUnlockFromIsr();
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CH_IRQ_EPILOGUE();
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dbg_check_lock();
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if (chSchIsPreemptionRequired())
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chSchDoReschedule();
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dbg_check_unlock();
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}
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}
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/** @} */
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