Rabbit OP7100 User Manual download pdf (Page 164)

158 eDisplay (OP7200)

Sets software watchdog timeout period. Call this function prior to enabling the software watchdog timer.

This function will check device information to determine that the peripheral board is connected to a master.

PARAMETERS

handle is an address index to device information. Use rn_device() or rn_find() to establish the

handle.

timeout is a timeout period from 0.025 to 6.375 seconds in increments of 0.025 seconds. Entering a

zero value will disable the software watchdog timer.

RETURN VALUE

The status byte from the previous command. -1 means that device information indicates the peripheral

board is not connected to the master.

Enables the hardware and/or software watchdog timers on a peripheral board. The software on the

peripheral board will keep the hardware watchdog timer updated, but will hard reset if the time expires.

The hardware watchdog cannot be disabled except by a hard reset on the peripheral board. The software

watchdog timer must be updated by software on the master. The peripheral board will soft reset if the

timeout set by rn_sw_wdt() expires.

This function will check device information to determine that the

peripheral board is connected to a master.

PARAMETERS

handle is an address index to device information. Use rn_device() or rn_find() to establish the

handle.

wdttype

0 enables both hardware and software watchdog timers

1 enables hardware watchdog timer

2 enables software watchdog timer

RETURN VALUE

The status byte from the previous command. -1 means that device information indicates the peripheral

board is not connected to the master.

No comments

Rabbit OP7100 User Manual Page 164