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/*
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 Win32/hal_lld.c
* @brief Win32 HAL subsystem low level driver code.
* @addtogroup WIN32_HAL
* @{
*/
#include "ch.h"
#include "hal.h"
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
static LARGE_INTEGER nextcnt;
static LARGE_INTEGER slice;
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level HAL driver initialization.
*/
void hal_lld_init(void) {
WSADATA wsaData;
/* Initialization.*/
if (WSAStartup(2, &wsaData) != 0) {
printf("Unable to locate a winsock DLL\n");
exit(1);
}
printf("ChibiOS/RT simulator (Win32)\n");
if (!QueryPerformanceFrequency(&slice)) {
printf("QueryPerformanceFrequency() error");
exit(1);
}
slice.QuadPart /= CH_FREQUENCY;
QueryPerformanceCounter(&nextcnt);
nextcnt.QuadPart += slice.QuadPart;
fflush(stdout);
}
/**
* @brief Interrupt simulation.
*/
void ChkIntSources(void) {
LARGE_INTEGER n;
#if HAL_USE_SERIAL
if (sd_lld_interrupt_pending()) {
dbg_check_lock();
if (chSchIsPreemptionRequired())
chSchDoReschedule();
dbg_check_unlock();
return;
}
#endif
/* Interrupt Timer simulation (10ms interval).*/
QueryPerformanceCounter(&n);
if (n.QuadPart > nextcnt.QuadPart) {
nextcnt.QuadPart += slice.QuadPart;
CH_IRQ_PROLOGUE();
chSysLockFromIsr();
chSysTimerHandlerI();
chSysUnlockFromIsr();
CH_IRQ_EPILOGUE();
dbg_check_lock();
if (chSchIsPreemptionRequired())
chSchDoReschedule();
dbg_check_unlock();
}
}
/** @} */
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