CCS C Compiler Manual PCB / PCM / PCH

#include
#endif
#use delay(clock=20000000)
#use rs232(baud=9600, xmit=PIN_A3, rcv=PIN_A2)
main() {
printf("Press any key to begin\n\r");
getc();
printf("1 khz signal activated\n\r");
while (TRUE) {
output_high (PIN_B0);
delay_us(500);
output_low(PIN_B0);
delay_us(500);
}
}
/////////////////////////////////////////////////////////////////
/// EX_STWT.C ///
/// This program uses the RTCC (timer0) and interrupts ///
/// to keep a real time seconds counter. A simple stop ///
/// watch function is then implemented. Configure the ///
/// CCS prototype card as follows, insert jumpers from: ///
/// 11 to 17 and 12 to 18. ///
/////////////////////////////////////////////////////////////////
#include
#use delay (clock=20000000)
#use rs232(baud=9600, xmit=PIN_A3, rcv=PIN_A2_
#define INTS_PER_SECOND 76 //(20000000/(4*256*256))
byte seconds;
//Number of interrupts left
//before a second has elapsed
#int_rtcc
clock_isr() {
//This function is called
//every time the RTCC (timer0)
//overflows (255->0)
//For this program this is apx
//76 times per second.
if(--int_count==0) {
++seconds;
int_count=INTS_PER_SECOND;
}
}
main() {
byte start;
int_count=INTS_PER_SECOND;
set_rtcc(0);
setup_counters (RTCC_INTERNAL, RTCC_DIV_256);
enable_interrupts (INT_RTCC);
enable_interrupts(GLOBAL)
do {
printf ("Press any key to begin. \n\r");
getc();
start=seconds;
printf("Press any key to stop. \n\r");
getc();
printf ("%u seconds. \n\r", seconds-start);
} while (TRUE);
}
/////////////////////////////////////////////////////////////////
/// EX_INTEE.C ///
/// This program will read and write to the ’83 or ’84 ///
/// internal EEPROM. Configure the CCS prototype card as ///
/// follows: insert jumpers from 11 to 17 and 12 to 18. ///
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