4 * Copyright 2004 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 Watchdog interface
17 *#* Revision 1.12 2007/06/07 14:35:12 batt
18 *#* Merge from project_ks.
20 *#* Revision 1.11 2006/07/19 12:56:26 bernie
21 *#* Convert to new Doxygen style.
23 *#* Revision 1.10 2006/05/18 00:38:42 bernie
24 *#* Work around missing ARCH_FREERTOS symbol.
26 *#* Revision 1.9 2006/03/22 09:49:09 bernie
27 *#* Add FreeRTOS support.
29 *#* Revision 1.8 2006/02/20 02:02:29 bernie
32 *#* Revision 1.7 2005/11/27 03:58:40 bernie
33 *#* Add POSIX timer emulator.
35 *#* Revision 1.6 2005/11/27 03:03:08 bernie
36 *#* Add Qt support hack.
38 *#* Revision 1.5 2005/11/04 16:20:02 bernie
39 *#* Fix reference to README.devlib in header.
41 *#* Revision 1.4 2005/04/12 01:37:17 bernie
42 *#* Prevent warning when watchdog is disabled.
44 *#* Revision 1.3 2005/04/11 19:10:28 bernie
45 *#* Include top-level headers from cfg/ subdir.
47 *#* Revision 1.2 2004/11/16 21:02:07 bernie
48 *#* Make driver optional; mark AVR specific parts as such.
50 *#* Revision 1.1 2004/10/26 08:34:47 bernie
51 *#* New DevLib module.
57 #include <appconfig.h>
58 #include <cfg/compiler.h> // INLINE
59 #include <cfg/arch_config.h>
61 /* Configury sanity check */
62 #if !defined(CONFIG_WATCHDOG) || (CONFIG_WATCHDOG != 0 && CONFIG_WATCHDOG != 1)
63 #error CONFIG_WATCHDOG must be defined to either 0 or 1
72 #include <qapplication.h>
74 #include <QtGui/QApplication>
77 #include <sys/select.h>
80 #include <cfg/macros.h> // BV()
81 #if CPU_AVR_ATMEGA1281 // Name is different in atmega1281
84 #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
85 #include <task.h> /* taskYIELD() */
89 #endif /* CONFIG_WATCHDOG */
92 * Reset the watchdog timer.
94 INLINE void wdt_reset(void)
98 // Let Qt handle events
100 qApp->processEvents();
102 static struct timeval tv = { 0, 0 };
103 select(0, NULL, NULL, NULL, &tv);
104 #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
107 __asm__ __volatile__ ("wdr");
111 #endif /* CONFIG_WATCHDOG */
115 * Set watchdog timer timeout.
117 * \param timeout 0: 16.3ms, 7: 2.1s
119 INLINE void wdt_init(uint8_t timeout)
123 // Create a dummy QApplication object
127 new QApplication(argc, (char **)NULL);
131 (void)timeout; // NOP
132 #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
135 WDTCR |= BV(WDCE) | BV(WDE);
142 #endif /* CONFIG_WATCHDOG */
145 INLINE void wdt_start(void)
152 #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
159 #endif /* CONFIG_WATCHDOG */
162 INLINE void wdt_stop(void)
169 #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
172 WDTCR |= BV(WDCE) | BV(WDE);
177 #endif /* CONFIG_WATCHDOG */
180 #endif /* DRV_WDT_H */