*
* -->
*
- * \version $Id$
*
* \author Bernie Innocenti <bernie@codewiz.org>
*
- * \brief Watchdog interface
+ * \brief Watchdog module, supplies a simple API to manage wdt on supported target.
+ *
+ * $WIZ$ module_name = "wdt"
+ * $WIZ$ module_configuration = "bertos/cfg/cfg_wdt.h"
+ * $WIZ$ module_supports = "avr"
*/
#ifndef DRV_WDT_H
#define DRV_WDT_H
#include "cfg/cfg_wdt.h"
+
#include <cfg/compiler.h> // INLINE
-#include "cfg/cfg_arch.h"
/* Configury sanity check */
#if !defined(CONFIG_WATCHDOG) || (CONFIG_WATCHDOG != 0 && CONFIG_WATCHDOG != 1)
#error CONFIG_WATCHDOG must be defined to either 0 or 1
#endif
-#if CONFIG_WATCHDOG
+#if OS_HOSTED
#include <cpu/detect.h>
#include <cfg/os.h>
#if OS_QT
- #if _QT < 4
- #include <qapplication.h>
- #else
#include <QtGui/QApplication>
- #endif
#elif OS_POSIX
#include <sys/select.h>
- #elif CPU_AVR
- #include <avr/io.h>
- #include <cfg/macros.h> // BV()
- #if CPU_AVR_ATMEGA1281 // Name is different in atmega1281
- #define WDTCR WDTCSR
- #endif
- #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
- #include <task.h> /* taskYIELD() */
#else
#error unknown CPU
#endif
+#elif CONFIG_WATCHDOG
+ #include CPU_HEADER(wdt)
#endif /* CONFIG_WATCHDOG */
-/**
- * Reset the watchdog timer.
- */
-INLINE void wdt_reset(void)
-{
-#if CONFIG_WATCHDOG
- #if OS_QT
- // Let Qt handle events
- ASSERT(qApp);
- qApp->processEvents();
- #elif OS_POSIX
- static struct timeval tv = { 0, 0 };
- select(0, NULL, NULL, NULL, &tv);
- #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
- vTaskDelay(1);
- #elif CPU_AVR
- __asm__ __volatile__ ("wdr");
- #else
- #error unknown CPU
- #endif
-#endif /* CONFIG_WATCHDOG */
-}
-/**
- * Set watchdog timer timeout.
- *
- * \param timeout 0: 16.3ms, 7: 2.1s
- */
-INLINE void wdt_init(uint8_t timeout)
-{
-#if CONFIG_WATCHDOG
- #if OS_QT
- // Create a dummy QApplication object
- if (!qApp)
- {
- int argc;
- new QApplication(argc, (char **)NULL);
- }
- (void)timeout;
- #elif OS_POSIX
- (void)timeout; // NOP
- #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
- /* nop */
- #elif CPU_AVR
- WDTCR |= BV(WDCE) | BV(WDE);
- WDTCR = timeout;
- #else
- #error unknown CPU
- #endif
-#else
- (void)timeout;
-#endif /* CONFIG_WATCHDOG */
-}
+#if OS_HOSTED || !CONFIG_WATCHDOG
-INLINE void wdt_start(void)
-{
-#if CONFIG_WATCHDOG
- #if OS_QT
- // NOP
- #elif OS_POSIX
- // NOP
- #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
- /* nop */
- #elif CPU_AVR
- WDTCR |= BV(WDE);
- #else
- #error unknown CPU
- #endif
-#endif /* CONFIG_WATCHDOG */
-}
+ /**
+ * Reset the watchdog timer.
+ */
+ INLINE void wdt_reset(void)
+ {
+ #if CONFIG_WATCHDOG
+ #if OS_POSIX
+ static struct timeval tv = { 0, 0 };
+ select(0, NULL, NULL, NULL, &tv);
+ #endif
+ #endif /* CONFIG_WATCHDOG */
+ }
-INLINE void wdt_stop(void)
-{
-#if CONFIG_WATCHDOG
- #if OS_QT
- // NOP
- #elif OS_POSIX
- // NOP
- #elif defined(ARCH_FREERTOS) && (ARCH & ARCH_FREERTOS)
- /* nop */
- #elif CPU_AVR
- WDTCR |= BV(WDCE) | BV(WDE);
- WDTCR &= ~BV(WDE);
- #else
- #error unknown CPU
- #endif
-#endif /* CONFIG_WATCHDOG */
-}
+ /**
+ * Start the watchdog timer that fire at the select
+ * timeout.
+ *
+ * \param timeout this value is target dependant.
+ * See the target documentation for more details.
+ */
+ INLINE void wdt_start(uint32_t timeout)
+ {
+ #if CONFIG_WATCHDOG
+ #if OS_QT
+ // Create a dummy QApplication object
+ if (!qApp)
+ {
+ int argc;
+ new QApplication(argc, (char **)NULL);
+ }
+ (void)timeout;
+ #elif OS_POSIX
+ (void)timeout; // NOP
+ #endif
+ #endif /* CONFIG_WATCHDOG */
+ (void)timeout; // NOP
+ }
+
+ INLINE void wdt_stop(void)
+ {
+ #if CONFIG_WATCHDOG
+ #if OS_QT
+ // NOP
+ #elif OS_POSIX
+ // NOP
+ #else
+ #error unknown CPU
+ #endif
+ #endif /* CONFIG_WATCHDOG */
+ }
+#endif /* OS_HOSTED || !CONFIG_WATCHDOG */
#endif /* DRV_WDT_H */