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4094 Shift Register 3 wire LCD - Driver By (Fattah-Tafreshi)

 
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fattahtafreshi



Joined: 18 Apr 2011
Posts: 14

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4094 Shift Register 3 wire LCD - Driver By (Fattah-Tafreshi)
PostPosted: Mon Apr 18, 2011 8:34 am     Reply with quote

Code:

//main.c
//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011
//4094 LCD Serial

#include "main.h"

//4094 PINs
#define data PIN_B0
#define clock PIN_B1
#define Strobe PIN_B2

#include "f_lcd.c"

void main()
{
int i;
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   lcd_init();
   
   for(i=0;i<=15;i++)
      {
         lcd_gotoxy(i,1);
         lcd_putc('-');
         lcd_gotoxy(16-i,2);
         lcd_putc('-');
         delay_ms(100);
      }
   
   
   printf(LCD_PUTC,"\fwww.ir-micro.com\n");
   printf(LCD_PUTC,"4094  Serial LCD");   
   delay_ms(2000);
   printf(LCD_PUTC,"\fFattah-Tafreshi\n");
   printf(LCD_PUTC,"VAF-O-T   2011");   

}



Code:

//main.h
#include <16F84A.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES HS                       //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPUT                    //No Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading

#use delay(clock=16000000)


Code:

//outshift.c
//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011
//4094(Shift Register) 3wire Serial To Parallel

byte d0,d1,d2,d3,d4,d5,d6,d7;

#IFNDEF  data
#define data      PIN_A0
#define clock     PIN_A1
#define strobe    PIN_A2
#ENDIF

//4094   Shift Register
void set_shift(int8 value)
{
int8 location=0,n=0;
location=128;
for(n=1;n<=8;n++){
    if ((value & location)>0) output_bit(data,1); else output_bit(data, 0);
      output_bit(clock,1);
      location=location / 2;
      output_bit(clock,0);
}
 output_bit(strobe,1);
 output_bit(strobe,0);
}



void f_output(byte value)
{
   set_shift(value);
}

void fatport()
{
int value;
value=0;
if (d0==1) value=value+1;
if (d1==1) value=value+2;
if (d2==1) value=value+4;
if (d3==1) value=value+8;
if (d4==1) value=value+16;
if (d5==1) value=value+32;
if (d6==1) value=value+64;
if (d7==1) value=value+128;
f_output(value);
}


void dg0(int value)
{
d0=value;
fatport();
}

void dg1(int value)
{
d1=value;
fatport();
}

void dg2(int value)
{
d2=value;
fatport();
}

void dg3(int value)
{
d3=value;
fatport();
}

void dg4(int value)
{
d4=value;
fatport();
}

void dg5(int value)
{
d5=value;
fatport();
}

void dg6(int value)
{
d6=value;
fatport();
}

void dg7(int value)
{
d7=value;
fatport();
}

void f_output_bit(byte pin,value)
{
   switch(pin)
   {
      case 1:dg0(value);
            break;
      case 2:dg1(value);
            break;
      case 3:dg2(value);
            break;
      case 4:dg3(value);
            break;
      case 5:dg4(value);
            break;
      case 6:dg5(value);
            break;
      case 7:dg6(value);
            break;
      case 8:dg7(value);
            break;           
   }
}


void f_output_high(byte pin)
{
   switch(pin)
   {
      case 1:dg0(1);
            break;
      case 2:dg1(1);
            break;
      case 3:dg2(1);
            break;
      case 4:dg3(1);
            break;
      case 5:dg4(1);
            break;
      case 6:dg5(1);
            break;
      case 7:dg6(1);
            break;
      case 8:dg7(1);
            break;           
   }
}


void f_output_low(byte pin)
{
   switch(pin)
   {
      case 1:dg0(0);
            break;
      case 2:dg1(0);
            break;
      case 3:dg2(0);
            break;
      case 4:dg3(0);
            break;
      case 5:dg4(0);
            break;
      case 6:dg5(0);
            break;
      case 7:dg6(0);
            break;
      case 8:dg7(0);
            break;           
   }
}


Code:

//flcd.c
//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011
//Edit flex_lcd For 4094(Shift Register) Serial LCD


#include "outshift.c"

// flex_lcd.c

// These pins are for the Microchip PicDem2-Plus board,
// which is what I used to test the driver.  Change these
// pins to fit your own board.

#define LCD_DB4   5
#define LCD_DB5   6
#define LCD_DB6   7
#define LCD_DB7   8

#define LCD_E     4
#define LCD_RS    3
//#define LCD_RW    -->>   GND

 

//========================================

#define lcd_type 2        // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line

int8 const LCD_INIT_STRING[4] =
{
 0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
 0xc,                    // Display on
 1,                      // Clear display
 6                       // Increment cursor
 };
                             

//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note:  !! converts an integer expression
// to a boolean (1 or 0).

 f_output_bit(LCD_DB4, !!(nibble & 1));
 f_output_bit(LCD_DB5, !!(nibble & 2)); 
 f_output_bit(LCD_DB6, !!(nibble & 4));   
 f_output_bit(LCD_DB7, !!(nibble & 8));   

 delay_cycles(1);
 f_output_high(LCD_E);
 delay_us(2);
 f_output_low(LCD_E);
}


//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
f_output_low(LCD_RS);

delay_us(60); 


if(address)
   f_output_high(LCD_RS);
else
   f_output_low(LCD_RS);
     
 delay_cycles(1);

f_output_low(LCD_E);


lcd_send_nibble(n >> 4);

lcd_send_nibble(n & 0xf);
}

//----------------------------
void lcd_init(void)
{
int8 i;

f_output_low(LCD_RS);


f_output_low(LCD_E);

delay_ms(15);

for(i=0 ;i < 3; i++)
   {
    lcd_send_nibble(0x03);
    delay_ms(5);
   }

lcd_send_nibble(0x02);

for(i=0; i < sizeof(LCD_INIT_STRING); i++)
   {
    lcd_send_byte(0, LCD_INIT_STRING[i]);
   }

}

//----------------------------

void lcd_gotoxy(int8 x, int8 y)
{
int8 address;

if(y != 1)
   address = lcd_line_two;
else
   address=0;

address += x-1;
lcd_send_byte(0, 0x80 | address);
}

//-----------------------------
void lcd_putc(char c)
{
 switch(c)
   {
    case '\f':
      lcd_send_byte(0,1);
      delay_ms(2);
      break;
   
    case '\n':
       lcd_gotoxy(1,2);
       break;
   
    case '\b':
       lcd_send_byte(0,0x10);
       break;
   
    default:
       lcd_send_byte(1,c);
       break;
   }
}




Last edited by fattahtafreshi on Wed Apr 20, 2011 7:05 am; edited 2 times in total
Wayne_



Joined: 10 Oct 2007
Posts: 681

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PostPosted: Mon Apr 18, 2011 8:36 am     Reply with quote

So errrr, whats wrong with it ?
fattahtafreshi



Joined: 18 Apr 2011
Posts: 14

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4094 ShiftRegister 3 wire LCD Project Proteus
PostPosted: Mon Apr 18, 2011 8:41 am     Reply with quote

https://rapidshare.com/files/458006085/PIC-CCS-4094-Serial-LCD.zip
Wayne_



Joined: 10 Oct 2007
Posts: 681

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PostPosted: Mon Apr 18, 2011 8:53 am     Reply with quote

You expect me to download that zip file? Why?
it would be nice if you actually asked a question and explained why you posted this.

If it is, as I expect a driver you have written which you wish to distribute then it should have been posted in the code section, not here.
temtronic



Joined: 01 Jul 2010
Posts: 5948
Location: Greensville,Ontario

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PostPosted: Mon Apr 18, 2011 9:57 am     Reply with quote

What's 'wrong', is that I can buy a PIC cheaper than the 4094 !
Using the PIC, I can have a 'smart' LCD, offloading the main PIC all of the 'driver' functions.

Sign of the times.....
fattahtafreshi



Joined: 18 Apr 2011
Posts: 14

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New Version
PostPosted: Tue Aug 20, 2013 5:56 am     Reply with quote

Hi.
Please download new version.

http://fattahtafreshi.persiangig.com/other/PIC-CCS-4094-Serial-LCD.zip
fattahtafreshi



Joined: 18 Apr 2011
Posts: 14

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New Version
PostPosted: Tue Aug 20, 2013 6:02 am     Reply with quote

Code:

//main.c

//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011-2013
//4094 LCD Serial

#include "main.h"

//4094 PINs
#define  SR4094_data    PIN_B0
#define  SR4094_clock   PIN_B1
#define  SR4094_Strobe  PIN_B2

#include "f_lcd.c"

void main()
{
int i;
int n=0;

   lcd_init();
   
   for(i=0;i<=15;i++)
      {
         lcd_gotoxy(i,1);
         lcd_putc('-');
         lcd_gotoxy(16-i,2);
         lcd_putc('-');
         delay_ms(100);
      }
   
   
   printf(lcd_putc,"\fwww.ccsinfo.com\n");
   printf(lcd_putc,"4094  Serial LCD");   
   delay_ms(2000);
   printf(lcd_putc,"\fFattah-Tafreshi\n");
   printf(lcd_putc,"VAF-O-T   2013");
   delay_ms(2000);
   
   while(true)
   {
      lcd_gotoxy(1,1);
      printf(lcd_putc,"\f%u",n);
      n++;
      delay_ms(100);
   }
   

}


Code:

//main.h

#include <16F84A.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES HS                       //High speed Osc (> 4mhz for PCM/PCH) (>10mhz for PCD)
#FUSES NOPUT                    //No Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading

#use delay(clock=16000000)


Code:

//f_lcd.c

//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011-2013
//Edit flex_lcd For 4094(Shift Register) Serial LCD


#include "outshift.c"

// flex_lcd.c

// These pins are for the Microchip PicDem2-Plus board,
// which is what I used to test the driver.  Change these
// pins to fit your own board.

#define LCD_DB4   4
#define LCD_DB5   5
#define LCD_DB6   6
#define LCD_DB7   7

#define LCD_E     3
#define LCD_RS    2
//#define LCD_RW    -->>   GND

 

//========================================

#define lcd_type 2        // 0=5x7, 1=5x10, 2=2 lines
#define lcd_line_two 0x40 // LCD RAM address for the 2nd line

int8 const LCD_INIT_STRING[4] =
{
 0x20 | (lcd_type << 2), // Func set: 4-bit, 2 lines, 5x8 dots
 0xc,                    // Display on
 1,                      // Clear display
 6                       // Increment cursor
 };
                             

//-------------------------------------
void lcd_send_nibble(int8 nibble)
{
// Note:  !! converts an integer expression
// to a boolean (1 or 0).

 f_output_bit(LCD_DB4, !!(nibble & 1));
 f_output_bit(LCD_DB5, !!(nibble & 2)); 
 f_output_bit(LCD_DB6, !!(nibble & 4));   
 f_output_bit(LCD_DB7, !!(nibble & 8));   

 delay_cycles(1);
 f_output_high(LCD_E);
 delay_us(2);
 f_output_low(LCD_E);
}


//----------------------------------------
// Send a byte to the LCD.
void lcd_send_byte(int8 address, int8 n)
{
f_output_low(LCD_RS);

delay_us(60); 


if(address)
   f_output_high(LCD_RS);
else
   f_output_low(LCD_RS);
     
 delay_cycles(1);

f_output_low(LCD_E);


lcd_send_nibble(n >> 4);

lcd_send_nibble(n & 0xf);
}

//----------------------------
void lcd_init(void)
{
int8 i;

f_output_low(LCD_RS);


f_output_low(LCD_E);

delay_ms(15);

for(i=0 ;i < 3; i++)
   {
    lcd_send_nibble(0x03);
    delay_ms(5);
   }

lcd_send_nibble(0x02);

for(i=0; i < sizeof(LCD_INIT_STRING); i++)
   {
    lcd_send_byte(0, LCD_INIT_STRING[i]);
   }

}

//----------------------------

void lcd_gotoxy(int8 x, int8 y)
{
int8 address;

if(y != 1)
   address = lcd_line_two;
else
   address=0;

address += x-1;
lcd_send_byte(0, 0x80 | address);
}

//-----------------------------
void lcd_putc(char c)
{
 switch(c)
   {
    case '\f':
      lcd_send_byte(0,1);
      delay_ms(2);
      break;
   
    case '\n':
       lcd_gotoxy(1,2);
       break;
   
    case '\b':
       lcd_send_byte(0,0x10);
       break;
   
    default:
       lcd_send_byte(1,c);
       break;
   }
}



Code:

//outshift.c

//Fattah-Tafreshi
//fattah.roland@gmail.com
//2011-2013
//4094(Shift Register) 3wire Serial To Parallel

#IFNDEF  SR4094_data
   #define  SR4094_data      PIN_A0
   #define  SR4094_clock     PIN_A1
   #define  SR4094_strobe    PIN_A2
#ENDIF

//4094   Shift Register

unsigned char tempdata=0;

void set_shift(unsigned char value)
{
   unsigned char mask=0x80;
   do{
      if(value & mask) output_bit(SR4094_data,1);else output_bit(SR4094_data,0);
      output_bit(SR4094_clock,1);
      output_bit(SR4094_clock,0);
      mask>>=1;
   }while(mask);
   
   output_bit(SR4094_strobe,1);
   output_bit(SR4094_strobe,0);
}


void f_output_bit(unsigned char pin,short value)
{
      if(value == 1)
         tempdata|=(1<<(pin % 8));
            else                         
         tempdata&=~(1<<(pin % 8));
     set_shift(tempdata);
}

void f_output_high(unsigned char pin)
{
   tempdata|=(1<<(pin % 8));
   set_shift(tempdata);
}

void f_output_low(unsigned char pin)
{
   tempdata&=~(1<<(pin % 8));
   set_shift(tempdata);
}
Code:
Nascimento



Joined: 30 Dec 2015
Posts: 3

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PostPosted: Wed Dec 30, 2015 7:16 pm     Reply with quote

hi friend simulated in Proteus all right
more when I made the card did not work
Nascimento



Joined: 30 Dec 2015
Posts: 3

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PostPosted: Wed Dec 30, 2015 7:17 pm     Reply with quote

you could send the layout of the 4094 card?
ps: google translator
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