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LCD DMC50448 samsung S6A0069X01

 
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treitmey



Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA

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LCD DMC50448 samsung S6A0069X01
PostPosted: Thu Jan 20, 2005 3:15 pm     Reply with quote

Code:

///////////////////////////////////////////////////////////////////////////
////                 LCD-DMC50448.c  www.apollodisplays.com            ////
////                 Driver for common LCD modules                     ////
////                                                                   ////
////  lcd_init()   Must be called before any other function.           ////
////                                                                   ////
////  lcd_putc(c)  Will display c on the next position of the LCD.     ////
////                     The following have special meaning:           ////
////                      \f  Clear display                            ////
////                      \n  Go to start of second line               ////
////                      \b  Move back one position                   ////
////                                                                   ////
////  lcd_gotoxy(x,y) Set write position on LCD (upper left is 1,1)    ////
///////////////////////////////////////////////////////////////////////////
#define set_tris_lcd_default() set_tris_d(0xff);set_tris_e(0);lcd.rs=0;lcd.rw=0

#define set_tris_lcd_r()       set_tris_d(0xff);set_tris_e(0)
#define set_tris_lcd_w()       set_tris_d(0x00);set_tris_e(0)
#define d_cycle 250
#define lcd_line_1 0x00  //address of the first line
#define lcd_line_2 0x40  //address of the second line
//#define lcd_line_3 0x10
//#define lcd_line_4 0x50
////////////////////commands///////////////////

const int8 clr_display = 0x01;  //
const int8 return_home = 0x02;  //

const int8 fctn_set    = 0x20;  //send this OR'd with one of the below
const int8 bus_8bit    = 0x10;  //    Data length 8bit/4bit
const int8 bus_4bit    = 0x00;  //    Data length 8bit/4bit
const int8 two_lines   = 0x08;  //    one or two line display
const int8 one_line    = 0x00;  //    one or two line display
const int8 font2       = 0x04;  //    font to use both look the same??
const int8 font1       = 0x00;  //    font to use both look the same??

const int8 entry_mode  = 0x04;  //send this OR'd with one of the below
const int8 pointer_incr= 0x02;  //    increment the address
const int8 display_shift=0x01;  //    shift the display
const int8 pointer_decr= 0x00;  //    decrement the address

const int8 display_ctrl= 0x08;  //send this OR'd with one of the below
const int8 ON          = 0x04;  //    display is on
const int8 cursor      = 0x02;  //    cursor is on
const int8 blink       = 0x01;  //    blink is on
const int8 OFF         = 0x00;  //    display is off

///////////////////////////////////////////////

struct lcd_pin_map
{
  int8    data;//data bus
  BOOLEAN rs; //command/data_bar  sometimes refered to as rs..register select
  BOOLEAN rw; //read/write_bar
  BOOLEAN enable;//chip enable
} lcd;

#BYTE lcd = 8 // This puts the entire structure on D and E
#BIT lcd_busy=0x08.7 //7th bit of data bus
int8 lcd_delay=50;

int8  lcd_wait(void)
{
  int8 n;
  set_tris_lcd_r();
  lcd.rs=0;
  lcd.rw=1;//read/write_bar
  lcd.enable=1;
  while(lcd_busy);//wait in loop for busy flag to clear
  n=lcd.data;
  lcd.enable=0;
  set_tris_lcd_default();
  return(n); //returns address pointer
}

void lcd_write_byte(BOOLEAN rs, BYTE n)//rs=0=command dc=1=data
{
  lcd_wait();
  set_tris_lcd_w();
  lcd.rs=rs;
  lcd.rw=0;//read/write_bar
  lcd.data=n;
  delay_us(1);
  lcd.enable=1;
  delay_us(2);
  lcd.enable=0;
  set_tris_lcd_default();
}

void lcd_init()
{
  delay_ms(15);//delay the required 15mS
  set_tris_lcd_w();
  lcd.enable=0;
  lcd.rs=0;//rs=0=Instruction register
  lcd.rw=0;//rw=0=write
  lcd.data=fctn_set|bus_8bit;
  lcd.enable=1;
  delay_ms(5);//delay the required 4.1mS
  lcd.enable=0;
  delay_us(lcd_delay);
  lcd.data=fctn_set|bus_8bit;
  lcd.enable=1;
  delay_us(100);//delay the required 100uS
  lcd.enable=0;
  lcd.data=fctn_set|bus_8bit;
  lcd.enable=1;
  //////////////////////////////////////////////////
  // From here on we can listen to lcd_busy signal//
  //////////////////////////////////////////////////
  //lcd_write_byte(data/instruction_bar,byte_of_data);
  lcd_write_byte(0,fctn_set|bus_8bit|two_lines);//(fctn set) 8bit/4bit,# lines,font
  lcd_write_byte(0,display_ctrl|OFF|cursor|blink);//(display ctrl),ON,cursor,blink
  lcd_write_byte(0,clr_display);
  lcd_write_byte(0,entry_mode|pointer_incr);
  lcd_write_byte(0,display_ctrl|ON|cursor|blink);//(display ctrl),ON,cursor,blink
}

//read_byte not finished,.. but should be easy enough,, same type of shift
BYTE lcd_read_byte()
{
  int temp;
  lcd_wait();
  set_tris_lcd_r();
  lcd.rs=0;
  lcd.rw=1;
  delay_cycles(d_cycle);
  lcd.enable=1;
  delay_cycles(d_cycle);
  temp=lcd.data;
  lcd.enable=0;
  delay_cycles(d_cycle);
  lcd.rw=0;
  delay_cycles(d_cycle);
  set_tris_lcd_w();
  return(temp);
}

void lcd_putc(char c)
{
  if(c<20 || (c>0x7F && c<0xA0)) return;
  switch (c) {
    //    case '\f'   : lcd_write_byte(0,1);
    //    lcdline=1;
    //    delay_ms(2);
    //    break;
    //    case '\n'   : lcd_gotoxy(1,++lcdline);        break;
    //    case '\b'   : lcd_write_byte(0,0x10);  break;
    default     : lcd_write_byte(1,c);     break;
  }
}

void lcd_gotoxy( BYTE x, BYTE y) {
  BYTE address;
  switch (y) {
    case 1: address=lcd_line_1; break;
    case 2: address=lcd_line_2; break;
    //   case 3: address=lcd_line_3; break;
    //   case 4: address=lcd_line_4; break;
    default: address=lcd_line_1; break;
  }
  address+=x-1;
  lcd_write_byte(0,0x80|address);
}
/////////////////////////////////////////////////////
////////////////////////////////////////////////////

#include <16f877.h>
#device *=16
#include <string.h> //FOR MEMCMP
#case
#use delay(clock=16000000,restart_wdt)
#fuses hs,nowdt,noprotect,nolvp//we have a wdt now
#define VER_MAJOR 1
#define VER_MINOR 02
#use rs232(baud=19200,xmit=PIN_C0,rcv=PIN_C1,invert,stream=DEBUG,errors)
#zero_ram
#include "LCD-DMC50448.c"
//======================= MAIN ============================//
void main(void)
{
  int8 i=0x0;
  //--------- START -------//
//  fprintf(DEBUG,".");
  fprintf(DEBUG,"STARTING U11\n\r");
  fprintf(DEBUG,"FIRMWARE VERSION %u.%02u\n\r",VER_MAJOR,VER_MINOR);
  setup_adc_ports(NO_ANALOGS);
  set_tris_a(0x00);
  set_tris_b(0x00);
  set_tris_c(0x00);
  set_tris_d(0x00);
  set_tris_e(0x0);
  lcd_init();
  lcd_gotoxy(3,1);
  printf(lcd_putc,"Hi");
  lcd_gotoxy(2,2);
  printf(lcd_putc,"dude");
 
 
 
  while(1)
  {
//    i++;
//    printf(lcd_putc,"%c",i);
//    delay_ms(1);

//    if(!kbhit())
//    {
//      i=fgetc(DEBUG);
//      printf(lcd_putc,"%c",i);
//    }
  }
}





Last edited by treitmey on Mon Jan 24, 2005 2:07 pm; edited 2 times in total
treitmey



Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA

View user's profile Send private message

4 bit mode
PostPosted: Thu Jan 20, 2005 4:58 pm     Reply with quote

Code:

///////////////////////////////////////////////////////////////////////////
////                 LCD-DMC50448.c  www.apollodisplays.com            ////
////                 Driver for common LCD modules                     ////
////                 4 bit mode                                        ////
////  lcd_init()   Must be called before any other function.           ////
////                                                                   ////
////  lcd_putc(c)  Will display c on the next position of the LCD.     ////
////                     The following have special meaning:           ////
////                      \f  Clear display                            ////
////                      \n  Go to start of second line               ////
////                      \b  Move back one position                   ////
////                                                                   ////
////  lcd_gotoxy(x,y) Set write position on LCD (upper left is 1,1)    ////
///////////////////////////////////////////////////////////////////////////
#define set_tris_lcd_default() set_tris_d(0xff);set_tris_e(0);lcd.rs=0;lcd.rw=0

#define set_tris_lcd_r()       set_tris_d(0xff);set_tris_e(0)
#define set_tris_lcd_w()       set_tris_d(0x00);set_tris_e(0)
#define d_cycle 250
#define lcd_line_1 0x00  //address of the first line
#define lcd_line_2 0x40  //address of the second line
//#define lcd_line_3 0x10
//#define lcd_line_4 0x50
////////////////////commands///////////////////

const int8 clr_display = 0x01;  //
const int8 return_home = 0x02;  //

const int8 fctn_set    = 0x20;  //send this OR'd with one of the below
const int8 bus_8bit    = 0x10;  //    Data length 8bit/4bit
const int8 bus_4bit    = 0x00;  //    Data length 8bit/4bit
const int8 two_lines   = 0x08;  //    one or two line display
const int8 one_line    = 0x00;  //    one or two line display
const int8 font2       = 0x04;  //    font to use both look the same??
const int8 font1       = 0x00;  //    font to use both look the same??

const int8 entry_mode  = 0x04;  //send this OR'd with one of the below
const int8 pointer_incr= 0x02;  //    increment the address
const int8 display_shift=0x01;  //    shift the display
const int8 pointer_decr= 0x00;  //    decrement the address

const int8 display_ctrl= 0x08;  //send this OR'd with one of the below
const int8 ON          = 0x04;  //    display is on
const int8 cursor      = 0x02;  //    cursor is on
const int8 blink       = 0x01;  //    blink is on
const int8 OFF         = 0x00;  //    display is off

///////////////////////////////////////////////

struct lcd_pin_map
{
  int junk:4;//data bus
  int data:4;//data bus
  BOOLEAN rs; //command/data_bar  sometimes refered to as rs..register select
  BOOLEAN rw; //read/write_bar
  BOOLEAN enable;//chip enable
} lcd;

#BYTE lcd = 8 // This puts the entire structure on D and E
#BIT lcd_busy=0x08.7 //7th bit of data bus
int8 lcd_delay=50;

int8  lcd_wait(void)
{
  int8 n;
  set_tris_lcd_r();
  lcd.rs=0;
  lcd.rw=1;//read/write_bar
  lcd.enable=1;
  while(lcd_busy);//wait in loop for busy flag to clear
  n=lcd.data;
  lcd.enable=0;
  set_tris_lcd_default();
  return(n);
}

void lcd_write_byte(BOOLEAN rs, BYTE n)//rs=0=command dc=1=data
{
fprintf(DEBUG,".");
  lcd_wait();
  set_tris_lcd_w();
  lcd.rs=rs;
  lcd.rw=0;//read/write_bar
  lcd.data=n>>4;
  delay_us(1);
  lcd.enable=1;
  delay_us(2);
  lcd.enable=0;
  delay_us(2);
  lcd.data=n;
  delay_us(1);
  lcd.enable=1;
  delay_us(2);
  lcd.enable=0;
  set_tris_lcd_default();
fprintf(DEBUG,".");
}

void lcd_init()
{
  set_tris_lcd_w();

  delay_ms(15);//delay the required 15mS
  lcd.enable=0;
  lcd.rs=0;//rs=0=Instruction register
  lcd.rw=0;//rw=0=write
  //lcd.data=(fctn_set|bus_8bit)>>4;
fprintf(DEBUG,"1");
  lcd.data=0b0011;
  lcd.enable=1;
  delay_ms(5);//delay the required 4.1mS
  lcd.enable=0;
fprintf(DEBUG,"2");
  lcd.data=0b0011;
  lcd.enable=1;
  delay_us(100);
  lcd.enable=0;
fprintf(DEBUG,"3");
  lcd.data=0b0011;
  lcd.enable=1;
  delay_us(100);
  lcd.enable=0;
fprintf(DEBUG,"4");
  lcd.data=0b0010;
  lcd.enable=1;
  delay_us(100);
  lcd.enable=0;

//  //lcd.data=(fctn_set|bus_8bit)>>4;
//  lcd.data=0b0010;
//  lcd.enable=1;
//  delay_us(100);//delay the required 100uS
//  lcd.enable=0;
//fprintf(DEBUG,"3"); 
//  lcd.data=(fctn_set|bus_8bit)>>4;
//  lcd.enable=1;
//  //////////////////////////////////////////////////
//  // From here on we can listen to lcd_busy signal//
//  //////////////////////////////////////////////////
//  //lcd_write_byte(data/instruction_bar,byte_of_data);
//fprintf(DEBUG,"4");
  lcd_write_byte(0,fctn_set|bus_4bit|two_lines);//(fctn set) 8bit/4bit,# lines,font
  lcd_write_byte(0,display_ctrl|OFF|cursor|blink);//(display ctrl),ON,cursor,blink
  lcd_write_byte(0,clr_display);
  lcd_write_byte(0,entry_mode|pointer_incr);
  lcd_write_byte(0,display_ctrl|ON|cursor|blink);//(display ctrl),ON,cursor,blink
fprintf(DEBUG,"5");
}

BYTE lcd_read_byte()
{
  int temp;
  lcd_wait();
  set_tris_lcd_r();
  lcd.rs=0;
  lcd.rw=1;
  delay_cycles(d_cycle);
  lcd.enable=1;
  delay_cycles(d_cycle);
  temp=lcd.data;
  lcd.enable=0;
  delay_cycles(d_cycle);
  lcd.rw=0;
  delay_cycles(d_cycle);
  set_tris_lcd_w();
  return(temp);
}

void lcd_putc(char c)
{
  if(c<20 || (c>0x7F && c<0xA0)) return;
  switch (c) {
    //    case '\f'   : lcd_write_byte(0,1);
    //    lcdline=1;
    //    delay_ms(2);
    //    break;
    //    case '\n'   : lcd_gotoxy(1,++lcdline);        break;
    //    case '\b'   : lcd_write_byte(0,0x10);  break;
    default     : lcd_write_byte(1,c);     break;
  }
}

void lcd_gotoxy( BYTE x, BYTE y) {
  BYTE address;
  switch (y) {
    case 1: address=lcd_line_1; break;
    case 2: address=lcd_line_2; break;
    //   case 3: address=lcd_line_3; break;
    //   case 4: address=lcd_line_4; break;
    default: address=lcd_line_1; break;
  }
  address+=x-1;
  lcd_write_byte(0,0x80|address);
}


///////////////////////////
///////////////////////////
#include <16f877.h>
#device *=16
#case
#use delay(clock=16000000,restart_wdt)
#fuses hs,nowdt,noprotect,nolvp//we have a wdt now
#define VER_MAJOR 1
#define VER_MINOR 02
#use rs232(baud=19200,xmit=PIN_C0,rcv=PIN_C1,invert,stream=DEBUG)
#zero_ram
#include "LCD-DMC50448.c"
//======================= MAIN ============================//
void main(void)
{
  setup_adc_ports(NO_ANALOGS);
  set_tris_a(0);set_tris_b(0);set_tris_c(0);set_tris_d(0);set_tris_e(0);
  fprintf(DEBUG,"STARTING U11\n\r");
  fprintf(DEBUG,"FIRMWARE VERSION %u.%02u\n\r",VER_MAJOR,VER_MINOR);
  lcd_init();
  delay_ms(1000);
  printf(lcd_putc,"Hi baby");
  while(1);
 
}

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