#include <16f877.h>
#fuses hs,nowdt,noprotect,put,brownout,nolvp
#use delay(clock = 20000000)
#use rs232(baud = 19200, xmit = pin_c6, rcv = pin_c7)

#define led1 pin_e0
#define led2 pin_e1
#define sw1 pin_b0
#define sw2 pin_b1

static char data;
static char buffer[20];
static int sw1dt=0;
static int sw2dt=0;

#int_rda
void isr_rcv(){
	data = getc();
}

main(){
	int i=0;
	enable_interrupts(int_rda);
	enable_interrupts(global);

	while(1){

		if(data == 0x31){
			output_bit(led1,1);
			output_bit(led2,0);
		}else if(data == 0x32){
			output_bit(led1,0);
			output_bit(led2,1);
		}else{
			output_bit(led1,0);
			output_bit(led2,0);
		}

		if(!input(sw1)){
			if(sw1dt == 0){
				delay_ms(10);
				if(!input(sw1)){
					i++;
					printf("%x\r\n",i);
					sw1dt = 1;
			}
		}
		}else{
			sw1dt = 0;
		}

		if(!input(sw2)){
			if(sw2dt == 0){
				delay_ms(10);
				if(!input(sw2)){
					i--;
					printf("%x\r\n",i);
					sw2dt = 1;
				}
			}
		}else{
			sw2dt = 0;
		}



	}
}