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https://github.com/markqvist/OpenModem.git
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93 lines
2.8 KiB
C
93 lines
2.8 KiB
C
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/**
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* \file
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* <!--
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* This file is part of BeRTOS.
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*
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* Bertos 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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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*
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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, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* As a special exception, you may use this file as part of a free software
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* library without restriction. Specifically, if other files instantiate
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* templates or use macros or inline functions from this file, or you compile
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* this file and link it with other files to produce an executable, this
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* file does not by itself cause the resulting executable to be covered by
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* the GNU General Public License. This exception does not however
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* invalidate any other reasons why the executable file might be covered by
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* the GNU General Public License.
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*
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* Copyright 2005, 2008 Develer S.r.l. (http://www.develer.com/)
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* -->
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*
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* \brief Low-level timer module for Qt emulator (implementation).
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*
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* \author Bernie Innocenti <bernie@codewiz.org>
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*/
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//#include <cfg/compiler.h> // hptime.t
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#include <os/hptime.h>
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#include <kern/irq.h> // irq_register()
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#if !CONFIG_KERN_IRQ
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#include <signal.h> // sigaction()
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#include <string.h> // memset()
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#endif
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#include <sys/time.h> // setitimer()
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// Forward declaration for the user interrupt server routine.
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void timer_isr(int);
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/// HW dependent timer initialization.
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static void timer_hw_init(void)
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{
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#if CONFIG_KERN_IRQ
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irq_register(SIGALRM, (void (*)(void))timer_isr);
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#else // ! CONFIG_KERN_IRQ
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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// Setup interrupt callback
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sa.sa_handler = timer_isr;
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGALRM);
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sa.sa_flags = SA_RESTART;
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sigaction(SIGALRM, &sa, NULL);
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#endif // CONFIG_KERN_IRQ
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// Setup POSIX realtime timer to interrupt every 1/TIMER_TICKS_PER_SEC.
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static const struct itimerval itv =
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{
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{ 0, 1000000 / TIMER_TICKS_PER_SEC }, /* it_interval */
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{ 0, 1000000 / TIMER_TICKS_PER_SEC } /* it_value */
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};
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setitimer(ITIMER_REAL, &itv, NULL);
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}
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static void timer_hw_cleanup(void)
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{
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static const struct itimerval itv =
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{
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{ 0, 0 }, /* it_interval */
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{ 0, 0 } /* it_value */
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};
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setitimer(ITIMER_REAL, &itv, NULL);
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signal(SIGALRM, SIG_DFL);
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}
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INLINE hptime_t timer_hw_hpread(void)
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{
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return hptime_get();
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}
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#define timer_hw_triggered() (true)
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