Kontron KTT20-pITX Bedienungsanleitung PDF herunterladen (Seite 51)

KTD-S0045-D Page 47 Windows® Embedded Compact 7 (WEC7) BSP

KTT20/pITX Software Guide

11.5 I

Support

Do not use the BSP I

example. The connector J2000 involves the camera interface and likely this con-

nector is not assembled in the future.

11.6 Watchdog Example

#include <windows.h>

#include <pkfuncs.h>

#define WDT_CNT_MAX 10

#define WDT_CNT_TIME 1000 // 1 second

#define WDT_CNT_ABORT 20

int _tmain (int argc, TCHAR *argv[])

{

HANDLE hWdt;

LPCWSTR pszWdtName = L"wdtdemo";

DWORD dwWdtPeriod = 5000; // 5 seconds

DWORD dwWdtWait = 1000; // 1 second

DWORD dwCount;

wprintf (TEXT ("Start watchdog demo\r\n"));

hWdt = CreateWatchDogTimer (pszWdtName, dwWdtPeriod, dwWdtWait, WDOG_RESET_DEVICE, 0, 0);

if (! hWdt)

{

wprintf (TEXT ("Error: invalid handle\r\n"));

return 1;

}

if (GetLastError() == ERROR_ALREADY_EXISTS)

{

wprintf (TEXT ("Error: watchdog name already exists\r\n"));

return FALSE;

}

if (! StartWatchDogTimer (hWdt, 0))

{

wprintf (TEXT ("Error: StartWatchDogTimer failed\r\n"));

CloseHandle (hWdt);

return FALSE;

}

dwCount = 0;

while ((dwCount++) < WDT_CNT_MAX)

{

wprintf (TEXT ("Refreshing watchdog timer. Count = %d of %d\r\n"), dwCount, WDT_CNT_MAX);

if (! RefreshWatchDogTimer (hWdt, 0))

{

wprintf (TEXT("Error: RefreshWatchDogTimer failed\r\n"));

CloseHandle (hWdt);

return FALSE;

}

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