EX_8PIN.C
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/////////////////////////////////////////////////////////////////////////
//// EX_8PIN.C ////
//// This program shows how to use the pins on a PIC12C508/9 or a ////
//// PIC12C671/2 for general I/O. When run, the program will run up ////
//// and down the LEDs. If you hold down the push button, the ////
//// program will reverse its direction. ////
//// ////
//// Configure the CCS prototype card as follows: ////
//// 12C508/671 pin Protoboard ////
//// 1 29 +5 ////
//// 2 46 LED 5 ////
//// 3 45 LED 4 ////
//// 4 40 Push Button ////
//// 5 44 LED 3 ////
//// 6 43 LED 2 ////
//// 7 42 LED 1 ////
//// 8 27 gnd ////
//// ////
//// This example will work with the PCB and PCM compilers. The ////
//// following conditional compilation lines are used to include a ////
//// valid device for each compiler. Change the device and clock ////
//// for your hardware if needed. ////
/////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2001 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS ////
//// C compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, ////
//// reproduction or distribution is permitted without written ////
//// permission. Derivative programs created using this software ////
//// in object code form are not restricted in any way. ////
/////////////////////////////////////////////////////////////////////////
#if defined(__PCB__)
#include <12C508.h>
#fuses INTRC,NOWDT,NOPROTECT, NOMCLR
#use delay(clock=4000000)
#define GP0 PIN_B0
#define GP1 PIN_B1
#define GP2 PIN_B2
#define GP3 PIN_B3
#define GP4 PIN_B4
#define GP5 PIN_B5
#elif defined(__PCM__)
#include <12C671.h>
#fuses INTRC,NOWDT,NOPROTECT, NOMCLR
#use delay(clock=4000000)
#define GP0 PIN_A0
#define GP1 PIN_A1
#define GP2 PIN_A2
#define GP3 PIN_A3
#define GP4 PIN_A4
#define GP5 PIN_A5
#endif
void cycle_forward (void)
{
output_low (GP5);
output_high (GP0);
delay_ms (70);
output_low (GP0);
output_high (GP1);
delay_ms (70);
output_low (GP1);
output_high (GP2);
delay_ms (70);
output_low (GP2);
output_high (GP4);
delay_ms (70);
output_low (GP4);
output_high (GP5);
delay_ms (70);
}
void cycle_backward (void)
{
output_low (GP0);
output_high (GP5);
delay_ms (70);
output_low (GP5);
output_high (GP4);
delay_ms (70);
output_low (GP4);
output_high (GP2);
delay_ms (70);
output_low (GP2);
output_high (GP1);
delay_ms (70);
output_low (GP1);
output_high (GP0);
delay_ms (70);
}
main() {
#if defined(__PCB__)
setup_counters (RTCC_INTERNAL,RTCC_DIV_2);
// See .h file for other special
// options for setup_counters
#else
setup_counters (RTCC_INTERNAL,RTCC_DIV_2);
#endif
while (TRUE) {
if (!input (GP3))
cycle_forward ();
else
cycle_backward ();
}
}
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