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https://github.com/portapack-mayhem/mayhem-firmware.git
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105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
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/*
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ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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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 and types. */
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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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