CCS C Compiler Manual PCB / PCM / PCH

touchpad_hit( )
Syntax: value = TOUCHPAD_HIT( )
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
None
TRUE or FALSE
Returns TRUE if a Capacitive Sensing Module (CSM) or Charge Time
Measurement Unit (CTMU) key has been pressed. If TRUE, then a call to
touchpad_getc() will not cause the program to wait for a key press.
All PIC's with a CSM or CTMU Module
#USE TOUCHPAD (options)
// When the pad connected to PIN_B0 is activated, store the letter 'A'
#USE TOUCHPAD (PIN_B0='A')
void main(void){
char c;
enable_interrupts(GLOBAL);
}
while (TRUE) {
if ( TOUCHPAD_HIT() )
//wait until key on PIN_B0 is pressed
c = TOUCHPAD_GETC(); //get key that was pressed
} //c will get value 'A'
Example Files:
None
Also See: #USE TOUCHPAD ( ), touchpad_state( ), touchpad_getc( )
touchpad_state( )
Syntax:
TOUCHPAD_STATE (state);
Parameters: state is a literal 0, 1, or 2.
Returns:
Function:
None
Sets the current state of the touchpad connected to the Capacitive
Sensing Module (CSM). The state can be one of the following three
values:
0 : Normal state
1 : Calibrates, then enters normal state
2 : Test mode, data from each key is collected in the int16 array
TOUCHDATA
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