Advantech SPC-57 - Manual (Page 77)

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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.
4. IOCTL_SET_WDTPERIOD (0x1004):
lpInBuffer : the DWORD pointer to your Watchdog time setting. Its value should be greater 1000. The
unit is mini-second. If your application opens the WDT driver, the default Watchdog timer is set to
5000 mini-seconds.
nInBufferSize:.unused.
lpOutBuffer: unused.
nOutBufferSize: unused.
5. IOCTL_ACCESS_WDT (0x1005):
Your application must trigger the Watchdog once during your Watchdog timer period. If your
application has not trigger at the specified period, the device will reboot automatically.
lpInBuffer :unused.
nInBufferSize:.unused.
lpOutBuffer: unused.
nOutBufferSize: unused.
6. IOCTL_GET_SCREENOFFTIME (0x1006):
lpInBuffer :unused.
nInBufferSize: unused.