БЭМЗ полищук доки / mogilev yst / ce4_10_5 / NUM_KEY

/*дг­ЄжЁп ®ЇаҐ¤Ґ«Ґ­Ёп ­®¬Ґа  ­ ¦ в®© Є­®ЇЄЁ –ќ7004M
      Copyright (C) ЃҐ«Ё«м­ЁЄ®ў ‚.„. 14.02.2001*/

         /*Ї®¤Є«о祭ЁҐ § Ј®«®ўЄ®ў ў­гв७­Ёе ॣЁбва®ў 80‘32*/
#include <io51.h>

extern  void delayi(char);

#define key          (*(char*) 0x010010) /*Ў ©в Є« ўЁ вгал*/
unsigned char nkey;
extern unsigned char number;

unsigned char num_key(void)
{
	EX0=1;
wait_nkey:
	if(flg.0==0)goto wait_nkey;
	EX0=0;
	delayi(0x28);
	flg.0=0;
	nkey=key;
	P1.4=0;
	P1.4=1;
	switch(nkey)
	{
	   case 0xfe : return number=1;  /*Є­®ЇЄ  "०Ё¬"*/
	   break;
	   case 0xfb : return number=2;  /*Є­®ЇЄ  "ЇаҐ¤Ґ« Ї® в®Єг"*/
	   break;
	   case 0xfd : return number=3;  /*Є­®ЇЄ  "®ЇаҐ¤Ґ«Ґ­ЁҐ Ї®ЈаҐи­®б⥩"*/
	   break;
	}
}