Advantech Intel XScale PXA Touch Panel Computer TPC-66 Serie Manuel d'utilisateur télécharger pdf (Page 62)

TPC-66 Series User Manual 50

A.2 How to Use the Control Code

There are 6 control codes for the operation codes in the WDT driver.

A.2.1 IOCTL _WDT_ENABLE:

Enables the Watchdog timer on your application. By default, if the

Watchdog timer is enabled, the WDT driver will automatically trigger

itself after the specified period and your application does not need to trig-

ger the Watchdog timer in this situation.

lpInBuffer : unused.

nInBufferSize: unused.

lpOutBuffer: unused.

nOutBufferSize: unused.

A.2.2 IOCTL _WDT_DISABLE:

Disables the Watchdog time on your application.

lpInBuffer : unsed.

nInBufferSize: unused.

lpOutBuffer: unused.

nOutBufferSize: unused.

A.2.3 IOCTL_WDT_STROBE:

Triggers the Watchdog. If your application uses IOCTL_WDT_ENABLE

to enable the Watchdog first and then sends IOCTL_WDT_REBOOT to

the WDT driver, your application must trigger the Watchdog once during

the Watchdog timer period. If your application has not triggered at the

specified period, the device will reboot automatically.

lpInBuffer: unused.

nInBufferSize: unused.

lpOutBuffer: unused.

nOutBufferSize: unused.

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Advantech Intel XScale PXA Touch Panel Computer TPC-66 Serie Manuel d'utilisateur Page 62