單片機(jī)Proteus仿真lcd12864一直黑屏，麻煩指教

ID:749524 · 發(fā)表于 2020-5-12 14:04

#include"12864.h"
#include"reg52.h"
#include <intrins.h>
sbit CS=P2^5;
sbit SID=P2^6;
sbit SCLK=P2^7;


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,
};

void SendByte(unsigned char Dbyte)
{
      unsigned char i;
      for(i=0;i<8;i++)
      {
            SCLK = 0;
            Dbyte=Dbyte<<1;
            SID = CY;
            SCLK = 1;
            SCLK = 0;
      }
}

unsigned char ReceiveByte(void)
{
      unsigned char i,temp1,temp2;
      temp1=temp2=0;
      for(i=0;i<8;i++)
      {
            temp1=temp1<<1;
            SCLK = 0;
            SCLK = 1;
            SCLK = 0;
            if(SID) temp1++;
      }
      for(i=0;i<8;i++)
      {
            temp2=temp2<<1;
            SCLK = 0;
            SCLK = 1;
            SCLK = 0;
            if(SID) temp2++;
      }
      return ((0xf0&temp1)+(0x0f&temp2));
}

void CheckBusy( void )
{
      do SendByte(0xfc);
      while(0x80&ReceiveByte());
}

void WriteCommand( unsigned char Cbyte )
{
      CS = 1;
      CheckBusy();
      SendByte(0xf8);
      SendByte(0xf0&Cbyte);
      SendByte(0xf0&Cbyte<<4);
      CS = 0;
}

void WriteData( unsigned char Dbyte )
{
      CS = 1;
      CheckBusy();
      SendByte(0xfa);
      SendByte(0xf0&Dbyte);
      SendByte(0xf0&Dbyte<<4);
      CS = 0;
}

void LcmInit( void )
{
   WriteCommand(0x30);
   WriteCommand(0x03);
   WriteCommand(0x0c);
   WriteCommand(0x01);
   WriteCommand(0x06);
}

void Location_xy_12864(unsigned char x,unsigned char y)
{
      switch(x)
      {
            case 0:
                     x=0x80;break;
            case 1:
                     x=0x90;break;
            case 2:
                     x=0x88;break;
            case 3:
                     x=0x98;break;
            default:
                     x=0x80;
      }
      y=y&0x07;
      WriteCommand(0x30);
      WriteCommand(y+x);
      WriteCommand(y+x);

}

void LcmClearTXT( void )
{
      unsigned char i;
      WriteCommand(0x30);
      WriteCommand(0x80);
      for(i=0;i<64;i++)
      WriteData(0x20);
      Location_xy_12864(0,0);
}

//??ê???

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++;
            if(*puts != '\0')
            {
                     WriteData(*puts);
                     puts++;
                     col++;
            }
      }
}

void Delay(unsigned int t)
{
      unsigned int m,n;
      for(m=0;m<t;m++);
      for(n=0;n<10;n++);
}