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- #include<reg52.h>
- #include<intrins.h>
- sbit io_LCD12864_RS=P2^0;
- sbit io_LCD12864_RW=P2^1;
- sbit io_LCD12864_EN=P2^2;
- #define io_LCD12864_DATAPORT P0
- #define SET_DATA io_LCD12864_RS=1;
- #define SET_INC io_LCD12864_RS=0;
- #define SET_READ io_LCD12864_RW=1;
- #define SET_WRITE io_LCD12864_RW=0;
- #define SET_EN io_LCD12864_EN=1;
- #define CLR_EN io_LCD12864_EN=0;
- void v_Lcd12864CheckBusy_f(void)
- {
- unsigned int nTimeOut=0;
- SET_INC
- SET_READ
- SET_EN
- SET_EN
- while((io_LCD12864_DATAPORT&0X80)&&(++nTimeOut!=0));
- CLR_EN
- SET_INC
- SET_READ
- }
- void v_Lcd12864SendCmd_f(unsigned char byCmd)
- {
- v_Lcd12864CheckBusy_f();
- SET_INC
- SET_WRITE
- CLR_EN
- io_LCD12864_DATAPORT=byCmd;
- _nop_();
- _nop_();
- SET_EN
- _nop_();
- _nop_();
- CLR_EN
- SET_READ
- SET_INC
- }
- void v_Lcd12864SendData_f(unsigned char byData)
- {
- v_Lcd12864CheckBusy_f();
- SET_DATA
- SET_WRITE
- CLR_EN
- io_LCD12864_DATAPORT=byData;
- _nop_();
- _nop_();
- SET_EN
- _nop_();
- _nop_();
- CLR_EN
- SET_READ
- SET_INC
- }
- void v_DelayMs_f(unsigned int nDelay)
- {
- unsigned int i;
- for(;nDelay>0;nDelay--)
- {
- for(i=125;i>0;i--);
- }
- }
- void v_Lcd12864Init_f(void)
- {
- v_Lcd12864SendCmd_f(0x30);
- v_DelayMs_f(50);
- v_Lcd12864SendCmd_f(0x10);
- v_DelayMs_f(50);
- v_Lcd12864SendCmd_f(0x06);
- v_DelayMs_f(50);
- v_Lcd12864SendCmd_f(0x0c);
- }
- void v_Lcd12864SetAddress_f(unsigned char x,y)
- {
- unsigned char byAddress;
- switch(y)
- {
- case 0: byAddress=0x80+x;
- break;
- case 1: byAddress=0x90+x;
- break;
- case 2: byAddress=0x88+x;
- break;
- case 3: byAddress=0x98+x;
- break;
- default:
- break;
- }
- v_Lcd12864SendCmd_f(byAddress);
- }
- void v_Lcd12864PutString_f(unsigned char x,unsigned char y,unsigned char*pData)
- {
- v_Lcd12864SetAddress_f(x,y);
- while(*pData!='\0')
- {
- v_Lcd12864SendData_f(*pData++);
- }
- }
- void main(void)
- {
- v_Lcd12864Init_f();
-
- v_Lcd12864PutString_f(0,0,"2019 6 7pm 16:30");
- v_Lcd12864PutString_f(0,1,51黑電子");
- v_Lcd12864PutString_f(0,2,"認真學習");
- v_Lcd12864PutString_f (0,3,"資源共享");
- while(1);
- }
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