Avalue BFC-10R1 - Manual (Page 43)

User ’s Manual
RSC-IMX51 User ’s Manual 43
Current status (high/low) of the selected pin is passed to. 0: Low, 1: High
Remarks:
The current state of a selected pin is obtained by calling this function.
For example:
int dwVal;
dwVal=GPIO_BIT_INPUT(1, 31) is called to get the current state of GPIO1_31
which is the input pin 7 of JIO1 on RSC-iMX51.
Watchdog Function:
Watchdog timer of RSC-iMX51 consists a time-out counter with time-out periods
from 0.5 seconds up to 128 seconds. The APIs are used to start the watchdog timer
(WDT) with pre-defined timing (mini-seconds after).
 WDT_START
void WDT_START(DWORD timemsec);
Parameters:
timemsec: [in] WDT time-out value range from 500 msec to 128000 msec with time
resolution of 500 msec
Return Value:
None
Remarks:
This function enables WDT to start counting down from non-zero timemsec and then
time-out occurs when WDT counts to zero which causes system reboot. Calling this
function before time-out happening causes non-zero timemsec to be reloaded to the
watchdog counter and count down resumes.
For example:
WDT_START( 500 ) means watchdog time-out happens after 500 mini-seconds.
Software reset:
void IMX51_REBOOT(void);
Parameters:
None
Return Value:
None
Remarks:
This function enables software reset in Windows CE.