CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
Requires:
Nothing
Examples:
switch( toupper(getc()) ) {
case 'R' : read_cmd(); break;
case 'W' : write_cmd(); break;
case 'Q' : done=TRUE; break;
}
Example Files:
Also See:
ex_str.c
None
touchpad_getc( )
Syntax: input = TOUCHPAD_GETC( );
Parameters:
Returns:
Function:
None
char (returns corresponding ASCII number is “input” declared as int)
Actively waits for firmware to signal that a pre-declared Capacitive
Sensing Module (CSM) or charge time measurement unit (CTMU) pin is
active, then stores the pre-declared character value of that pin in “input”.
Note: Until a CSM or CTMU pin is read by firmware as active, this
instruction will cause the microcontroller to stall.
Availability:
Requires:
Examples:
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);
}
c = TOUCHPAD_GETC();
//will wait until one of declared pins is detected
//if PIN_B0 is pressed, c will get value 'A'
Example Files:
None
Also See: #USE TOUCHPAD, touchpad_state( )
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