Rabbit OP7100 User Manual download pdf (Page 165)

User’s Manual 159

Hits software watchdog. Set the timeout period and enable the software watchdog prior to using this

function.

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.

count is a pointer to return the present count of the software watchdog timer. The equivalent time left in

seconds can be determined from count × 0.025 seconds.

RETURN VALUE

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

board is not connected to the master.

SEE ALSO

rn_enable_wdt, rn_sw_wdt

Reads the status of which reset occurred and whether any watchdogs are enabled.

PARAMETERS

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

handle.

retdata is a pointer to the return address of the communication byte. A set bit indicates which error

occurred. This register is cleared when read.

7—HW reset has occurred

6—SW reset has occurred

5—HW watchdog enabled

4—SW watchdog enabled

3,2,1,0—Reserved

RETURN VALUE

The status byte from the previous command.

int rn_hitwd(int handle, char *count);

int rn_rst_status(int handle, char *retdata);

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Rabbit OP7100 User Manual Page 165