Advantech TPC-1260G Manual do Utilizador descarregar pdf (Página 64)

TPC-1260G User Manual 52

Appendix C Watchdog Timer Program-

ming

There is a built-in watchdog timer in Windows CE 4.2 for TPC-1260G.

You can access it through the WIN32 API. TPC-1260G provides a WDT

driver to allow users to enable/disable the watchdog timer. The driver

name is “WDT1:”. Programmers must open this driver before using the

resources. Then programmers can use DeviceIOControl functions to

enable/disable the watchdog timer. The introduction below includes

DeviceIOControl, the definition of the parameter and an example.

C.1 DeviceIOControl

This function sends a control code directly to a specified device driver,

causing the corresponding device to perform the specified operation.

BOOL DeviceIoControl(

HANDLE hDevice,

DWORD dwIoControlCode,

LPVOID lpInBuffer,

DWORD nInBufferSize,

LPVOID lpOutBuffer,

DWORD nOutBufferSize,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped );

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 73 74

Sem comentários

Advantech TPC-1260G Manual do Utilizador Página 64