Лабораторные МПр / код / lab3 / Lab - automat / src / eint

/***************************************
*
*	   LETI traning 2011
*
***************************************/
#include "LPC17xx.h"
#include "eint.h"
#include "leds.h"     
#include "GLCD.h"  
#include "states.h"   

extern int led;
int state;
extern char* c="Hello";
char* cc="Goodbye";

//--external interrupt:
void eint0_init(void) {
	LPC_PINCON->PINSEL4 |= (1<<20); //connect eint0 to pin
	LPC_SC->EXTMODE = 1;
	NVIC_EnableIRQ((IRQn_Type) EINT0_IRQn);
}

//---
void EINT0_IRQHandler (void) __irq {
	LPC_SC->EXTINT = 1;
		GLCD_Clear(White);
		switch (state){
	case STATE_HELLO:
	GLCD_SetTextColor(Black);
	GLCD_DisplayString(1,1,(unsigned char*)cc);
		state= STATE_GOODBYE;
		 break;
    case STATE_GOODBYE:
	GLCD_SetTextColor(Black);
	GLCD_DisplayString(1,1,(unsigned char*)c);
		state= STATE_HELLO;
		 break;
	    case STATE_HELLO_CV:
	GLCD_SetTextColor(Blue);
	GLCD_DisplayString(1,1,(unsigned char*)cc);
	   	state= STATE_GOODBYE;
		 break;
		 default:break;
			
}	   }