在论坛上求助之后,有自己看了看PDF,确定r8 r9处的跳线的确就是SPB ,默认是短接在R8处 为并口模式,只需要把0欧的电阻移到R9处就可以用串口驱动了。如下图
- // 12864 ST7920 串口程序
- //***************************************************************************
- //并口程序只需要修改一下底层的WriteCommand() WriteData()即可.
- //毕竟并口比串口简单一些,如果有不明白的请联系.
- //***************************************************************************
- //连线表: CPU=89C52 SystemClock=12Mhz *
- //CS=P3.0 SCLK=P3.1 SID=P3.2 Reset=CPU复位信号取反*
- //***************************************************************************
- #include <reg52.h>
- #include <intrins.h>
- sbit LCM_RS = P3^3; //模式位,为0输入指令,为1输入数据
- sbit LCM_RW = P3^4; //读写位,为0读,为1写
- sbit LCM_EN = P3^5; //使能位,高脉冲
- sbit CS =P3^3; //RS
- sbit SID=P3^4; //RW
- sbit SCK=P3^5; //E
- sbit Key=P1^4;
- unsigned char code AC_TABLE[]={
- 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
- 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
- 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
- 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
- };
- unsigned char code str2[]="欢迎光临lcdbbs!!";
- unsigned char code str1[]="故人西辞黄鹤楼,烟花三月下扬州。孤帆远影碧空尽,唯见长江天际流。";
- unsigned char code bmp1[];
- void SendByte(unsigned char Dbyte)
- {
- unsigned char i;
- for(i=0;i<8;i++)
- {
- SCK = 0;
- Dbyte=Dbyte<<1;
- SID = CY;
- SCK = 1;
- SCK = 0;
- }
- }
- unsigned char ReceiveByte(void)
- {
- unsigned char i,temp1,temp2;
- temp1=temp2=0;
- for(i=0;i<8;i++)
- {
- temp1=temp1<<1;
- SCK = 0;
- SCK = 1;
- SCK = 0;
- if(SID) temp1++;
- }
- for(i=0;i<8;i++)
- {
- temp2=temp2<<1;
- SCK = 0;
- SCK = 1;
- SCK = 0;
- if(SID) temp2++;
- }
- return ((0xf0&temp1)+(0x0f&temp2));
- }
- void CheckBusy( void )
- {
- do SendByte(0xfc); //11111,RW(1),RS(0),0
- while(0x80&ReceiveByte());
- }
- void WriteCommand( unsigned char Cbyte )
- {
- CS = 1;
- CheckBusy();
- SendByte(0xf8); //11111,RW(0),RS(0),0
- SendByte(0xf0&Cbyte);
- SendByte(0xf0&Cbyte<<4);
- CS = 0;
- }
- void WriteData( unsigned char Dbyte )
- {
- CS = 1;
- CheckBusy();
- SendByte(0xfa); //11111,RW(0),RS(1),0
- SendByte(0xf0&Dbyte);
- SendByte(0xf0&Dbyte<<4);
- CS = 0;
- }
- unsigned char ReadData( void )
- {
- CheckBusy();
- SendByte(0xfe); //11111,RW(1),RS(1),0
- return ReceiveByte();
- }
- void Delay(unsigned int MS)
- {
- unsigned char us,usn;
- while(MS!=0) //for 12M
- { usn = 2;
- while(usn!=0)
- {
- us=0xf5;
- while (us!=0){us--;};
- usn--;
- }
- MS--;
- }
- }
- void LcmInit( void )
- {
- WriteCommand(0x30);
- WriteCommand(0x03);
- WriteCommand(0x0C);
- WriteCommand(0x01);
- WriteCommand(0x06);
- }
- void LcmClearTXT( void )
- {
- unsigned char i;
- WriteCommand(0x30);
- WriteCommand(0x80);
- for(i=0;i<64;i++)
- WriteData(0x20);
- }
- void LcmClearBMP( void )
- {
- unsigned char i,j;
- WriteCommand(0x34);
- WriteCommand(0x36);
- for(i=0;i<32;i++)
- {
- WriteCommand(0x80|i);
- WriteCommand(0x80);
- for(j=0;j<32;j++)
- WriteData(0);
- }
- }
- void PutStr(unsigned char row,unsigned char col,unsigned char *puts)
- {
- WriteCommand(0x30);
- WriteCommand(AC_TABLE[8*row+col]);
- while(*puts != '\0')
- {
- if(col==8)
- {
- col=0;
- row++;
- }
- if(row==4) row=0;
- WriteCommand(AC_TABLE[8*row+col]);
- WriteData(*puts);
- puts++;
- WriteData(*puts);
- puts++;
- col++;
- }
- }
- void PutBMP(unsigned char *puts)
- {
- unsigned int x=0;
- unsigned char i,j;
- WriteCommand(0x34);
- WriteCommand(0x36);
- for(i=0;i<32;i++)
- {
- WriteCommand(0x80|i);
- WriteCommand(0x80);
- for(j=0;j<32;j++)
- {
- WriteData(puts[x]);
- x++;
- }
- }
- }
- void main( void )
- {
- Delay(100);
- LcmInit();
- LcmClearTXT();
- LcmClearBMP();
- while(1)
- {
- LcmClearTXT();
- PutBMP(bmp1);
- Delay(1000);
-
- LcmClearBMP();
- PutStr(0,0,str1);
- Delay(1000);
- }
- }
- unsigned char code bmp1[]={
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- 0x80,0x00,0x0F,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x3F,0xC0,0x00,0x07,0x07,0x00,0x04,0x01,0x00,0x00,0x38,0x60,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x78,0xE0,0x00,0x3F,0x83,0x80,0x06,0x03,0x80,0x00,0x1C,0x70,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x02,0x38,0x70,0x00,0xFF,0x07,0x80,0x06,0x39,0x80,0x00,0x1F,0x70,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x02,0x1C,0x30,0x00,0x7C,0x0E,0x00,0x06,0x19,0xC0,0x00,0x1F,0x80,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x02,0x1C,0x30,0x00,0x3E,0x1C,0x00,0x06,0x1F,0xC0,0x00,0x7F,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x03,0x3E,0x30,0x00,0x62,0x1A,0x00,0x0F,0x79,0x00,0x03,0xFE,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x60,0x0F,0x00,0x3F,0x00,0x00,0x00,0x3C,0x00,0xC0,0x00,0x00,0x01,
- 0x80,0x07,0x76,0x18,0x00,0xC3,0xC1,0x00,0x1F,0xFB,0x00,0x03,0xFE,0x00,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x3F,0xC0,0xF1,0xC0,0x00,0x00,0xF0,0x01,0xC0,0x00,0x00,0x01,
- 0x80,0x07,0x6E,0x18,0x00,0xCF,0xC1,0x80,0x7E,0x3F,0x80,0x01,0xE2,0x00,0x00,0x01,
- 0x80,0x00,0x07,0xE0,0x7F,0xE0,0xE0,0xE0,0x00,0x03,0xC0,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x07,0x7F,0x98,0x00,0xFE,0x83,0x81,0xFC,0x1E,0xC0,0x00,0x83,0x00,0x00,0x01,
- 0x80,0x00,0x0F,0xE0,0x63,0xE1,0xE0,0xE0,0x00,0x07,0x00,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x06,0xFF,0xD8,0x01,0xFA,0x87,0x00,0xFD,0xF8,0xC0,0x01,0x73,0x00,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0xC1,0xE1,0xE0,0xE0,0x00,0x0F,0x00,0x07,0xC0,0x00,0x00,0x01,
- 0x80,0x0F,0xD9,0xD8,0x03,0xE3,0x0E,0x80,0xFE,0x7E,0xC0,0x03,0xF9,0x80,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x01,0xE1,0xF0,0xE0,0x00,0x1E,0x00,0x0B,0xC0,0x00,0x00,0x01,
- 0x80,0x0D,0xB8,0x18,0x1F,0xC3,0x08,0xC0,0x0E,0x6D,0x80,0x03,0xF1,0x80,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x01,0xE0,0xFD,0xC7,0xEF,0x9E,0x00,0x13,0xC0,0x00,0x00,0x01,
- 0x80,0x0D,0xFE,0x18,0x0F,0xC2,0x10,0xE0,0x1C,0x3F,0x00,0x03,0xE0,0xC0,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x01,0xC0,0xFF,0x83,0xC6,0x1F,0xE0,0x13,0xC0,0x00,0x00,0x01,
- 0x80,0x0D,0xCE,0x18,0x06,0xC2,0x01,0xC0,0x38,0x3E,0x00,0x00,0xE8,0xC0,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x01,0x80,0x3F,0x81,0xE4,0x3C,0x78,0x23,0xC0,0x00,0x00,0x01,
- 0x80,0x0C,0x4C,0x18,0x00,0xC2,0x03,0x80,0x78,0x1F,0xF0,0x00,0xFC,0x60,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x03,0x80,0x3F,0xC1,0xE8,0x3C,0x78,0x43,0xC0,0x00,0x00,0x01,
- 0x80,0x0C,0x5E,0x18,0x00,0xC2,0x07,0x00,0x68,0x3F,0xF8,0x03,0xFC,0x22,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x03,0x00,0x6F,0xC0,0xF0,0x3C,0x3C,0x83,0xC0,0x00,0x00,0x01,
- 0x80,0x06,0x3F,0x38,0x01,0x82,0x0E,0x00,0x09,0xF8,0x00,0x03,0xC0,0x32,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x06,0x00,0xC3,0xE0,0x78,0x3C,0x3C,0xFF,0xF0,0x00,0x00,0x01,
- 0x80,0x07,0x10,0x38,0x00,0x82,0x1C,0x00,0x0B,0x99,0xC0,0x03,0x00,0x1A,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x0C,0x11,0xC3,0xE0,0x78,0x3C,0x3C,0xFF,0xF0,0x00,0x00,0x01,
- 0x80,0x03,0xFF,0xF0,0x00,0x02,0x38,0x00,0x08,0x30,0xE0,0x02,0x00,0x1E,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x08,0x11,0xC1,0xE0,0x7C,0x3C,0x3C,0xFF,0xF0,0x00,0x00,0x01,
- 0x80,0x01,0xEF,0xF0,0x00,0x00,0xE0,0x00,0x08,0xE0,0x60,0x00,0x00,0x0E,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x1F,0xF1,0xC1,0xE0,0xBC,0x1C,0x3C,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x00,0x03,0xE0,0x00,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,0x07,0x00,0x01,
- 0x80,0x00,0x01,0xE0,0x3F,0xE1,0xC1,0xC0,0x9E,0x1E,0x38,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x01,
- 0x80,0x00,0x01,0xF0,0x7F,0xE0,0xE3,0x83,0x1F,0x0E,0x70,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x0F,0xFC,0xFF,0xE0,0x3F,0x07,0xDF,0x83,0xE0,0x03,0xC0,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
- 0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x00,0x01,
- 0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,
- };
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