CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
Returns:
Function:
Availability:
Requires
Examples:
Example Files:
undefined
Sets the analog comparator module. The above constants have four parts
representing the inputs: C1-, C1+, C2-, C2+
This function is only available on devices with an analog comparator.
Constants are defined in the devices .h file.
// Sets up two independent comparators (C1 and C2),
// C1 uses A0 and A3 as inputs (- and +), and C2
// uses A1 and A2 as inputs
setup_comparator(A0_A3_A1_A2);
ex_comp.c
Also See:
Analog Comparator overview
setup_counters( )
Syntax:
setup_counters (rtcc_state, ps_state)
rtcc_state may be one of the constants defined in the devices .h file. For
example: RTCC_INTERNAL, RTCC_EXT_L_TO_H or RTCC_EXT_H_TO_L
Parameters:
Returns:
Function:
ps_state may be one of the constants defined in the devices .h file.
For example: RTCC_DIV_2, RTCC_DIV_4, RTCC_DIV_8, RTCC_DIV_16,
RTCC_DIV_32, RTCC_DIV_64, RTCC_DIV_128, RTCC_DIV_256,
WDT_18MS, WDT_36MS, WDT_72MS, WDT_144MS, WDT_288MS,
WDT_576MS, WDT_1152MS, WDT_2304MS
undefined
Sets up the RTCC or WDT. The rtcc_state determines what drives the RTCC.
The PS state sets a prescaler for either the RTCC or WDT. The prescaler will
lengthen the cycle of the indicated counter. If the RTCC prescaler is set the
WDT will be set to WDT_18MS. If the WDT prescaler is set the RTCC is set to
RTCC_DIV_1.
This function is provided for compatibility with older versions. setup_timer_0
and setup_WDT are the recommended replacements when possible. For PCB
devices if an external RTCC clock is used and a WDT prescaler is used then
this function must be used.
285