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PCD
0 : Normal state
1 : Calibrates, then enters normal state
2 : Test mode, data from each key is collected in the int16 array TOUCHDATA
Note: If the state is set to 1 while a key is being pressed, the touchpad will not
calibrate properly.
Availability:
Requires:
Examples:
All PIC's with a CSM Module
#USE TOUCHPAD (options)
#USE TOUCHPAD (THRESHOLD=5, PIN_D5='5', PIN_B0='C')
void main(void){
char c;
TOUCHPAD_STATE(1);
//calibrates, then enters normal state
enable_interrupts(GLOBAL);
while(1){
c = TOUCHPAD_GETC();
//will wait until one of declared pins is detected
}
//if PIN_B0 is pressed, c will get value 'C'
}
//if PIN_D5 is pressed, c will get value '5'
Example
Files:
Also See:
None
#USE TOUCHPAD, touchpad_getc( ), touchpad_hit( )
tx_buffer_bytes()
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example
Files:
Also See:
value = tx_buffer_bytes([stream]);
stream – optional parameter specifying the stream defined in #USE RS232.
Number of bytes in transmit buffer that still need to be sent.
Function to determine the number of bytes in transmit buffer that still need to be sent .
All devices
#USE RS232
#USE_RS232(UART1,BAUD=9600,TRANSMIT_BUFFER=50)
void main(void) {
char string[] = “Hello”;
if(tx_buffer_bytes() <= 45)
printf(“%s”,string);
}
None
_USE_RS232( ), RCV_BUFFER_FULL( ), TX_BUFFER_FULL( ),
RCV_BUFFER_BYTES( ), GET( ), PUTC( ) ,PRINTF( ), SETUP_UART( ),
302
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