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大家可以做個(gè)實(shí)驗(yàn),本人正在做12864m的萬年歷,做好后給大家發(fā)上來,準(zhǔn)備用串行通訊,這樣可以少焊8根線,我是個(gè)大懶蛋,哈哈。
- #include <reg51.h>
- #include <string.h>
- #include <intrins.h>
- #define uint unsigned int
- #define uchar unsigned char
- //====================================================================
- //函數(shù)聲明
- void Delay(uint ms); //延時(shí)子程序
- void W_1byte(uchar RW, uchar RS, uchar W_data);
- void Write_8bits(uint W_bits);
- void LCD_Init(void);
- sbit CS=P2^0; //CS=RS
- sbit SID=P2^1; //RW=SID
- sbit SCLK=P2^2; //E=SCLK
- sbit PSB=P2^3; //E=SCLK
- //===================================================================
- code uchar mynew1[]={"歡迎你使用本產(chǎn)品"};
- code uchar mynew2[]={"努力學(xué)習(xí)成為高手"};
- code uchar mynew3[]={"為你提供技術(shù)支持"};
- code uchar mynew4[]={" QQ:15910380 "};
- void main()
- {
- uchar i=0;
- SP = 0X60;
- CS = 0;
- SCLK = 0;
- SID = 0;
- PSB=0;
- LCD_Init();
- while(1)
- {
- W_1byte(0,0,0x80);
- _nop_();
- for(i=0;mynew1[i]!='\0';i++)
- {
- W_1byte(0,1,mynew1[i]);
- }
- W_1byte(0,0,0x90);
- for(i=0;mynew2[i]!='\0';i++)
- {
- W_1byte(0,1,mynew2[i]);
- }
- W_1byte(0,0,0x88);
- for(i=0;mynew3[i]!='\0';i++)
- {
- W_1byte(0,1,mynew3[i]);
- }
- W_1byte(0,0,0x98);
- for(i=0;mynew4[i]!='\0';i++)
- {
- W_1byte(0,1,mynew4[i]);
- }
- }
- }
- /******************************************************************/
- void LCD_Init(void)
- {
- uchar cmd;
- cmd=0x30; //功能設(shè)置 8位數(shù)據(jù),基本指令
- W_1byte(0,0,cmd);
- Delay(2);
- cmd=0x0C; //顯示狀態(tài) ON,游標(biāo)OFF,反白OFF
- W_1byte(0,0,cmd); //寫指令
- Delay(2);
- cmd=0x01; //清除顯示
- W_1byte(0,0,cmd); //寫指令
- Delay(2);
- cmd=0x02; //地址歸位
- W_1byte(0,0,cmd); //寫指令
- Delay(2);
- cmd=0x80; //設(shè)置DDRAM地址
- W_1byte(0,0,cmd); //寫指令
- Delay(2); //延時(shí)
- }
- /*******************************************************************
- 函數(shù)作用:寫一個(gè)字節(jié)的數(shù)據(jù)到12864液晶,包括指令和數(shù)據(jù)
- 說 明:RW=1,從液晶讀數(shù)據(jù)到MCU;RW=0,寫一個(gè)數(shù)據(jù)到液晶;
- (一般RW都設(shè)為0,即只向液晶寫數(shù)據(jù),不讀數(shù)據(jù))
- RS="1",寫入的是數(shù)據(jù);RS=0,寫入的是指令;
- 一般模式:RW=0,RS=1;寫數(shù)據(jù)
- RW="0",RS=0;寫指令
- ********************************************************************/
- void W_1byte(uchar RW, uchar RS, uchar W_data)
- {
- uint H_data,L_data,S_ID = 0xf8; //11111RWRS0
- if(RW == 0)
- {
- S_ID &=~ 0x04;
- }
- else //if(RW==1)
- {
- S_ID |= 0X04;
- }
- if(RS == 0)
- {
- S_ID &=~ 0x02;
- }
- else //if(RS==1)
- {
- S_ID |= 0X02;
- }
- H_data = W_data;
- H_data &= 0xf0; //屏蔽低4位的數(shù)據(jù)
- L_data = W_data; //xxxx0000格式
- L_data &= 0x0f; //屏蔽高4位的數(shù)據(jù)
- L_data <<= 4; //xxxx0000格式
- CS = 1;
- Write_8bits(S_ID); //發(fā)送S_ID
- Write_8bits(H_data); //發(fā)送H_data
- Write_8bits(L_data); //發(fā)送L_data
- CS = 0;
- }
- /********************************************************************
- 函數(shù)作用:負(fù)責(zé)串行輸出8個(gè)bit位
- ********************************************************************/
- void Write_8bits(uint W_bits)
- {
- uint i,Temp_data;
- for(i=0; i<8; i++)
- {
- Temp_data = W_bits;
- Temp_data <<= i;
- if((Temp_data&0x80)==0) //bit7 is zero
- {
- SID = 0;
- _nop_();
- SCLK = 1;
- _nop_();
- _nop_();
- SCLK = 0;
- _nop_();
- SID = 0;
- }
- else //bit7 is one
- {
- SID = 1;
- _nop_();
- SCLK = 1;
- _nop_();
- _nop_();
- SCLK = 0;
- _nop_();
- SID = 0;
- }
- }
- }
- /********************************************************************
- 函數(shù)作用:毫秒級(jí)的延時(shí)程序,當(dāng)晶振為12Mhz時(shí),xtal=12;
- ********************************************************************/
- void Delay(uint ms)
- {
- uint i;
- while(ms--)
- {
- for(i=1;i<(uint)(8*143-2);i++)
- ;
- }
- }
-
復(fù)制代碼
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