|
|
View previous topic :: View next topic |
Author |
Message |
fattahtafreshi
Joined: 18 Apr 2011 Posts: 14
|
4094 Shift Register 3 wire LCD - Driver By (Fattah-Tafreshi) |
Posted: Mon Apr 18, 2011 8:34 am |
|
|
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
|
|
Posted: Mon Apr 18, 2011 8:36 am |
|
|
So errrr, whats wrong with it ? |
|
|
fattahtafreshi
Joined: 18 Apr 2011 Posts: 14
|
|
|
Wayne_
Joined: 10 Oct 2007 Posts: 681
|
|
Posted: Mon Apr 18, 2011 8:53 am |
|
|
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: 9205 Location: Greensville,Ontario
|
|
Posted: Mon Apr 18, 2011 9:57 am |
|
|
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
|
|
|
fattahtafreshi
Joined: 18 Apr 2011 Posts: 14
|
New Version |
Posted: Tue Aug 20, 2013 6:02 am |
|
|
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);
}
|
|
|
|
Nascimento
Joined: 30 Dec 2015 Posts: 3
|
|
Posted: Wed Dec 30, 2015 7:16 pm |
|
|
hi friend simulated in Proteus all right
more when I made the card did not work |
|
|
Nascimento
Joined: 30 Dec 2015 Posts: 3
|
|
Posted: Wed Dec 30, 2015 7:17 pm |
|
|
you could send the layout of the 4094 card?
ps: google translator |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|