Advantech PCM-7130 Manuel d'utilisateur télécharger pdf (Page 60)

PCM-7130 User’s Manual 48

[out] Long pointer to a variable that receives the size, in bytes, of the data

stored into the buffer pointed to by lpOutBuffer.

The lpBytesReturned parameter cannot be NULL. Even when an opera-

tion produces no output data, and lpOutBuffer can be NULL, the Device-

IoControl function makes use of the variable pointed to by

lpBytesReturned. After such an operation, the value of the variable is

without meaning.

lpOverlapped

[in] Ignored; set to NULL.

- Return Values

Nonzero indicates success. Zero indicates failure. To get extended error

information, call GetLastError.

There are 7 control codes for the operation codes in the WDT1 driver:

1. IOCTL_ENABLE_WDT (0x1001):

Enables the Watchdog timer on your application. Your application must

trigger to Watchdog timer by IOCTL_ACCESS_WDT interface during

specified period, otherwise the device will reboot automatically

lpInBuffer : unsed.

nInBufferSize: unused.

lpOutBuffer: unused.

nOutBufferSize: unused.

2. IOCTL_DISABLE_WDT (0x1002):

Disable the Watchdog time on your application.

lpInBuffer : unsed.

nInBufferSize: unused.

lpOutBuffer: unused.

nOutBufferSize: unused.

3. IOCTL_GET_WDTPERIOD (0x1003):

lpInBuffer :unused.

nInBufferSize: unused.

lpOutBuffer: the DWORD pointer to your Watchdog time setting. The

unit is mini-second. Its value should be greater 1000. The default setting

is 5000 mini-seconds.

nOutBufferSize: unused.

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Advantech PCM-7130 Manuel d'utilisateur Page 60