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/*
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @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 and types. */
/*===========================================================================*/
static struct timeval nextcnt;
static struct timeval tick = {0, 1000000 / CH_CFG_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();
}
}
/** @} */
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