LCD.rar_8051 lcd 4 bit_lcd 4 bit _lcd 8051 4bit_proteus 8 bit

/********************************************************************************************** |========================================================| |RS RW D7 D6 D5 D4 D3 D2 D1 D0 | |========================================================| Clear Display |0 0 0 0 0 0 0 0 0 1 | Home |0 0 0 0 0 0 0 0 1 * | Entery Mode Set |0 0 0 0 0 0 0 1 I/D S |I/D=1 Increment; S=1 Display Shift; Display On/Off |0 0 0 0 0 0 1 D C B |D=1 Display On; C=1 Cursor On; B=1 Cursor Blink Cursor/Display Shift |0 0 0 0 0 1 S/C R/L * * |S/C=1 Shift Display; S/C=0 Move Cursor; R/L=1 Shift Right Functoin Set |0 0 0 0 1 DL N F * * |DL=1 8-Bit; N=1 2-lines; F=1 5*10 Dots; Set CGRAM Add |0 0 0 1 CG5 CG4 CG3 CG2 CG1 CG0 | Set DDRAM Add |0 0 1 DD6 DD5 DD4 DD3 DD2 DD1 DD0 | Read Busy Flag |0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 |BF=1 Internal Operation Going Write |1 0 ***** W R I T E D A T A********| Read |1 1 ********* R E A D D A T A***********| |========================================================| 38H Function set (8-bit interface, 2 lines, 5*7 Pixels) 3CH Function set (8-bit interface, 2 lines, 5*10 Pixels) 30H Function set (8-bit interface, 1 line, 5*7 Pixels) 28H Function set (4-bit interface, 2 lines, 5*7 Pixels) 20H Function set (4-bit interface, 1 line, 5*7 Pixels) 04H Entry mode set(Decrement AC, Display Shift Off) 05H Entry mode set(Decrement AC, Display Shift On) 06H Entry mode set(Increment AC, Display Shift Off) 07H Entry mode set(Increment AC, Display Shift On) 1EH Scroll display one character right (all lines) 18H Scroll display one character left (all lines) 10H Move cursor one character left 14H Move cursor one character right 0EH Turn on visible underline cursor 0FH Turn on visible blinking-block cursor 0CH Make cursor invisible 08H Blank the display (without clearing) 0CH Restore the display (with cursor hidden) 01H Clear Screen 02H Home (move cursor to top/left character position) 80H +Address Set cursor position (DDRAM address) 40H +Address Set pointer in character-generator RAM (CG RAM address) **********************************************************************************************/ #include<reg51.h> #include<intrins.h> #include<stdlib.h> #include "Delay.h" #define LCD P0 #define Putc WriteData #define ROWS 4 #define COLUMNS 20 #define CGRAM_ADDR 0x40 sbit BKLT = P1^0; sbit RS = P1^1;//P3^6; sbit RW = P1^2; sbit ELCD = P1^3; int Delay; int StrCntr; void CustomName(void); void asc_2_dec(long); /****************************************/ void WriteControl(unsigned char d) { RS = 0; RW = 0; ELCD = 0; _nop_();//Added Sajjad LCD = d; ELCD = 1; _nop_();//Added Sajjad for(Delay=0; Delay<500; Delay++);//Added Sajjad ELCD = 0; RW = 1; //for(Delay=0; Delay<500; Delay++);//200 } void WriteData (unsigned char d) { RS = 1; ELCD = 0; _nop_();//Added Sajjad RW = 0; LCD = d; ELCD = 1; _nop_();//Added Sajjad for(Delay=0; Delay<500; Delay++);//Added Sajjad ELCD = 0; RW = 1; //for(Delay=0; Delay<200; Delay++); //60 } void InitDisp() { WriteControl(0x38); //(8-bit interface, 2 lines, 5*7 Pixels) WriteControl(0x38); WriteControl(0x38); WriteControl(0x06); //(Increment AC, Display Shift Off) WriteControl(0x0C); //Make cursor invisible } void LCDClear (void) { WriteControl(0x01); } void LCDCursor (char r, char c) { switch (r) { case 1: WriteControl(0x80 + c - 1); break; case 2: WriteControl(0xc0 + c - 1); break; case 3: WriteControl(0x94 + c - 1); break; case 4: WriteControl(0xd4 + c - 1); break; default: break; } } void PutStr (char *s) { StrCntr = 0; while (s[StrCntr]) WriteData(s[StrCntr++]); } void ClearLine(int LineNumber) { int p; for (p=1; p<=COLUMNS; p++) { LCDCursor(LineNumber,p); Putc(' '); } } void ClearColumn(int ColumnNumber) { int p; for (p=1; p<=ROWS; p++) { LCDCursor(p,ColumnNumber); Putc(' '); } } /***************************************************************************** * * lcd_move_right() * *****************************************************************************/ static void lcd_move_right(char *s, int LineNo) { unsigned char column; for(column = 1; column <= 20; column++) { LCDCursor(LineNo,column-1); Putc(' '); LCDCursor(LineNo,column); PutStr(s); delay_ms(100); } } /***************************************************************************** * * lcd_move_left() * *****************************************************************************/ static void lcd_move_left(char *s, int LineNo) { unsigned char column; for(column = 20; column>=1; column--) { LCDCursor(LineNo,column+7);//6=length Putc(' '); LCDCursor(LineNo,column); PutStr(s); delay_ms(100);//Added } } void main(void) { InitDisp(); LCDClear(); PutStr("Sajjad Hussain"); LCDCursor(2,1); PutStr("ICCC"); P2 = 0x55; P3 = 0x55; while(1); } /* void main(void) { unsigned char tl0; unsigned char th0; unsigned int r; unsigned char *ptr; unsigned char buff[10]; unsigned char buffer[10]; //long tot_count; unsigned char msg[] = {"Hello!"}; unsigned char *s; unsigned char *d; tl0 = 65; th0 = 66; r = 50; InitDisp(); LCDClear(); //tot_count = r*65536 + th0*256 + tl0; //asc_2_dec(tot_count); buff[0] = 'S'; ptr = 0x0000; *ptr = 'a'; ptr++; *ptr = 'b'; ptr++; *ptr = 'c'; ptr++; *ptr = 'd'; ptr++; *ptr = 'e'; Putc(*ptr); ptr--; Putc(*ptr); ptr--; Putc(*ptr); ptr--; Putc(*ptr); ptr--; Putc(*ptr); while(1); } */ void asc_2_dec(long num) { char R,i; char Buffer[10]; unsigned char Index; long Q; Q = num; Index = 0; while(Q>0) { Q = num / 10; R = num % 10; Buffer[Index++] = R; num = Q; } for(i=(Index-1);i>=0;i--) Putc(Buffer[i]+48); } void CustomName(void) { //1 WriteControl(0x40); //Set CGRAM Address WriteData(0x00); //Patter R0W1 WriteData(0x01); //Patter R0W2 WriteData(0x00); //Patter R0W3 WriteData(0x00); //Patter R0W4 WriteData(0x00); //Patter R0W5 WriteData(0x00); //Patter R0W6 WriteData(0x07); //Patter R0W7 WriteData(0x00); //Patter R0W8 LCDCursor(2,10); //Gotoxy Set DDRAM Address WriteData(0x00); //Display the Custom Character No 0 //2 WriteControl(0x48); //Set CGRAM Address WriteData(0x00); //Patter R0W1 WriteData(0x00); //Patter R0W2 WriteData(0x18); //Patter R0W3 WriteData(0x04); //Patter R0W4 WriteData(0x04); //Patter R0W5 WriteData(0x04); //Patter R0W6 WriteData(0x18); //Patter R0W7 WriteData(0x00); //Patter R0W8 LCDCursor(2,11); //Gotoxy Set DDRAM Address WriteData(0x01); //Display the Custom Character No 2 //3 WriteControl(0x50); //Set CGRAM Address WriteData(0x04); //Patter R0W1 WriteData(0x04); //Patter R0W2 WriteData(0x04); //Patter R0W3 WriteData(0x04); //Patter R0W4 WriteData(0x04); //Patter R0W5 WriteData(0x04); //Patter R0W6 WriteData(0x03); //Patter R0W7 WriteData(0x00); //Patter R0W8 LCDCursor(2,12); //Set DDRAM Address WriteData(0x02); //Display the Custom Character No 3 //4 WriteControl(0x58); //Set CGRAM Address WriteData(0x00); //Patter R0W1 WriteData(0x00); //Patter R0W2 WriteData(0x00); //Patter R0W3 WriteData(0x01); //Patter R0W4 WriteData(0x03); //Patter R0W