main.c

液晶显示器与单片机接口电路程序

#include "wdf_cypress_lib.h"
#include "disram.h"

extern void DisWrite(BOOL mode,unsigned char ddata);
extern unsigned char rotation(unsigned char key);
extern void clacdata(unsigned char N)
extern void addfcw(unsigned char a[5]);
extern void minusfcw(unsigned char a[5]);
extern void calctw(unsigned char N);
extern void disramprocess(unsigned char keystore);
extern void display();
extern void initialization();



main()
{

   static unsigned char keystore=0x00; 
   static unsigned int times;
   static unsigned char key=0xff;

   if(IOB==key)//去抖算法
   times++;
 else 
   times=0;
   key=IOB;
      
if(times==1)
  {
    times=0;//以上确定按键已经按下
    switch(key)
     {
    case 0xfe://button one，choosing DDS 
        keystore=1;
        break;
    case 0xfd://button two，frequency
        keystore=2;
        break;
    case 0xfb://button three，Amplitude
        keystore=3;
        break;
    case 0xf7://button four, Phase
	keystore=4;
        break;
    case 0xef://button five，undefined
         break;

    case 0x7f://press down the rotation,alternating the unit
         keystore=8;
         break;
    case 0xdf:
	 keystore=rotation(key);
	 break;
    case 0x9f:
         keystore=rotation(key);
	 break;
    case 0xbf:
         keystore=rotation(key);
	 break;
    case 0xff:
	 if(keystore)
         {
         disramprocess(keystore);
         display();
         }
    default:
          break;
       }//the end of swicth(key)

    }//the ehd of if(times==20)
  }