wdt.h

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00001 
00043 #ifndef DRV_WDT_H
00044 #define DRV_WDT_H
00045 
00046 #include "cfg/cfg_wdt.h"
00047 
00048 #include <cfg/compiler.h> // INLINE
00049 
00050 /* Configury sanity check */
00051 #if !defined(CONFIG_WATCHDOG) || (CONFIG_WATCHDOG != 0 && CONFIG_WATCHDOG != 1)
00052     #error CONFIG_WATCHDOG must be defined to either 0 or 1
00053 #endif
00054 
00055 #if OS_HOSTED
00056     #include <cpu/detect.h>
00057     #include <cfg/os.h>
00058 
00059     #if OS_QT
00060             #include <QtGui/QApplication>
00061     #elif OS_POSIX
00062         #include <sys/select.h>
00063     #else
00064         #error unknown CPU
00065     #endif
00066 #elif CONFIG_WATCHDOG
00067     #include CPU_HEADER(wdt)
00068 #endif /* CONFIG_WATCHDOG */
00069 
00070 
00071 #if OS_HOSTED || !CONFIG_WATCHDOG
00072 
00076     INLINE void wdt_reset(void)
00077     {
00078     #if CONFIG_WATCHDOG
00079         #if OS_POSIX
00080             static struct timeval tv = { 0, 0 };
00081             select(0, NULL, NULL, NULL, &tv);
00082         #endif
00083     #endif /* CONFIG_WATCHDOG */
00084     }
00085 
00093     INLINE void wdt_start(uint32_t timeout)
00094     {
00095     #if CONFIG_WATCHDOG
00096         #if OS_QT
00097             // Create a dummy QApplication object
00098             if (!qApp)
00099             {
00100                 int argc;
00101                 new QApplication(argc, (char **)NULL);
00102             }
00103             (void)timeout;
00104         #elif OS_POSIX
00105             (void)timeout; // NOP
00106         #endif
00107     #endif /* CONFIG_WATCHDOG */
00108         (void)timeout; // NOP
00109     }
00110 
00111     INLINE void wdt_stop(void)
00112     {
00113     #if CONFIG_WATCHDOG
00114         #if OS_QT
00115             // NOP
00116         #elif OS_POSIX
00117             // NOP
00118         #else
00119             #error unknown CPU
00120         #endif
00121     #endif /* CONFIG_WATCHDOG */
00122     }
00123 #endif /* OS_HOSTED || !CONFIG_WATCHDOG */
00124 
00125 #endif /* DRV_WDT_H */