Acrosser Technology AR-B6005, User Manual, Page: 58 / 66

Description: Set the status of GPIO Output pins.
Parameters:
This function takes an unsigned char as the parameter. The bit0 ~ bit3 in variable ‘val’ represent the
status of the output pins. The bit3 ~ bit7 in the variable ‘val’ are of no use and can be neglected.
For example:
u8 val = 0xf;
i32 result;
result = setChLevel(val);
if(result != 0)
printf(“Fail to set GPIO!\n”);
Return Value: If the function sets the values successfully, it returns 0, any other returned value
stands for error.
6.5.2.2 Watchdog
1. Syntax:
u8 getWtdTimer(void)
Description: This function read the value of the watchdog time counter and returns it to the caller.
Parameters: None.
Return Value: This function returns the value of the time counter and returns it to the caller as an
unsigned character.
2. Syntax:
void setWtdTimer( u8 val )
Description: This function sets the watchdog timer register to the value ‘val’ and starts to count
down. The value could be 0 ~ 255. The unit is second. Setting the timer register to 0 disables the
watchdog function and stops the countdown.
Parameters: The parameter ‘val’ is the value to set to watchdog timer register. The range is 0 ~ 255.
Return Value: None.
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