4 * Copyright 2005 Develer S.r.l. (http://www.develer.com/)
5 * This file is part of DevLib - See README.devlib for information.
10 * \author Bernardo Innocenti <bernie@develer.com>
12 * \brief Low-level timer module for Qt emulator (implementation).
17 *#* Revision 1.2 2006/01/16 03:30:21 bernie
18 *#* Make header C++ friendly.
20 *#* Revision 1.1 2005/11/27 03:58:18 bernie
21 *#* Add POSIX timer emulator.
23 *#* Revision 1.1 2005/11/27 03:06:36 bernie
24 *#* Qt timer emulation.
28 #include <cfg/compiler.h> // hptime.t
29 #include <os/hptime.h>
31 #include <signal.h> // sigaction()
32 #include <sys/time.h> // setitimer()
33 #include <string.h> // memset()
36 // Forward declaration for the user interrupt server routine.
39 /// HW dependent timer initialization.
40 EXTERN_C static void timer_hw_init(void)
43 memset(&sa, 0, sizeof(sa));
45 // Setup interrupt callback
46 sa.sa_handler = timer_isr;
47 sigemptyset(&sa.sa_mask);
48 sigaddset(&sa.sa_mask, SIGALRM);
49 sa.sa_flags = SA_RESTART;
50 sigaction(SIGALRM, &sa, NULL);
52 // Setup POSIX realtime timer to interrupt every 10ms.
53 static struct itimerval itv =
55 { 0, 1000 }, /* it_interval */
56 { 0, 1000 } /* it_value */
58 setitimer(ITIMER_REAL, &itv, NULL);
61 INLINE hptime_t timer_hw_hpread(void)