CCS C Compiler Manual PCB / PCM / PCH

Function:
Restarts the watchdog timer. If the watchdog timer is enabled,
this must be called periodically to prevent the processor from
resetting.
The watchdog timer is used to cause a hardware reset if the
software appears to be stuck.
The timer must be enabled, the timeout time set and software
must periodically restart the timer. These are done differently on
the PCB/PCM and PCH parts as follows:
PCB/PCM PCH
Enable/Disable #fuses setup_wdt()
Timeout time setup_wdt() #fuses
restart restart_wdt() restart_wdt()
Availability:
Requires:
All devices
#FUSES
Examples:
#fuses WDT // PCB/PCM example
// See setup_wdt for a
// PIC18 example
main() {
setup_wdt(WDT_2304MS);
while (TRUE) {
restart_wdt();
perform_activity();
}
}
Example
Files:
Also See:
ex_wdt.c
#FUSES, setup_wdt(), WDT or Watch Dog Timer Overview
rotate_left( )
Syntax:
Parameters:
Returns:
Function:
rotate_left (address, bytes)
address is a pointer to memory
bytes is a count of the number of bytes to work with.
undefined
Rotates a bit through an array or structure. The address may be an array
identifier or an address to a byte or structure (such as &data). Bit 0 of the
lowest BYTE in RAM is considered the LSB.
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