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- #include<reg51.h>
- #define uint unsigned int;
- #define uchar unsigned char;
- sbit rs=P1^0;//并行模式下為指令數(shù)據(jù)選擇信H/L=指令/數(shù)據(jù)
- sbit rw=P1^1;//并行的讀寫信號(hào)H/L=讀/寫
- sbit e=P1^2; //并行下的使能信號(hào)
- unsigned char f;
- uchar d1,d2;//數(shù)據(jù)緩沖
- unsigned char i,j;
- uint code tab[]={ 0xd6d0,0xbdbb,0xd2bb,0xbabd,0xbed6,0x2000,0x04,0x04,
- 0xa3ba,0xc4d0,0x0d0a,0xd6b0,0xd2b5,0xa3ba,0xb5e7,0xb9a4,
- 0x0d0a,0xb5a5,0xcebb,0xa3ba,0xd6d0,0xbdbb,0xd2bb,0xbabd,
- 0xbed6,0xbef9,0xceb0,0xcdf2,0xcbea,0xa3a1,0x2020,0x2020, };
-
-
- void delay4_6ms()//
- {
- unsigned char av,bv;
- for(bv=12;bv>0;bv--)
- for(av=175;av>0;av--);
- }
- void delay(void)
- {
- ;;;
- }
- void writedate(unsigned int a)//寫數(shù)據(jù)
- {
- d2=a;
- CY=0;
- a=(a>>8);
- d1=a;
-
- f=1;
- for(i=0;i<2;i++)
- {
- delay4_6ms();
- rs=1;
- delay();
- rw=0;
- delay();
- e=1;
- delay();
- if(f)
- {
- P0=d1;
- f=0;
-
- }
- else P0=d2;
- delay();
- e=0;
- delay();
-
- }
- }
- void writectrl(unsigned char ds)//寫指令
- {
- rs=0;
- delay();
- rw=0;
- delay();
- e=1;
- delay();
- P0=ds;
- delay();
- e=0;
- delay();
- }
- void main()
- {
-
- writectrl(0x01);//寫指令
- delay4_6ms();
- writectrl(0x02);//寫指令
- delay4_6ms();
- writectrl(0x0f);//寫指令
- delay4_6ms();
- writectrl(0x80);//寫指令
-
-
- delay4_6ms();
- for(j=0;j<32;j++)
-
- writedate(tab[j]);//寫數(shù)據(jù)
- delay4_6ms();
-
-
-
- while(1);
- }
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