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Graphics LCD COG Module with KS0724 Driver

 
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prayami



Joined: 22 Dec 2004
Posts: 78

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Graphics LCD COG Module with KS0724 Driver
PostPosted: Wed Jun 08, 2005 7:32 pm     Reply with quote
Hi..

I got Graphics LCD COG module which has KS0724 driver.
Here I have posted the code that I have made to initialize this LCD.
I tried a lot but could not get success.

Can anybody have some code or any suggestion?

The LCD is from Clover Display and datasheet is at following address.
http://www.cloverdisplay.com/pdf/cv9007e.pdf

And datasheet for KS0724 is at

http://www.ortodoxism.ro/datasheets/SamsungElectronic/mXuytxq.pdf

Quote:



#CASE
#include <18F4525.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,BROWNOUT,PUT,NOPBADEN,NOXINST,NOMCLR,NOLPT1OSC
#use delay(clock=20000000)

#define CS PIN_B0 //= LCD pin 21
#define RES PIN_B1 //= LCD pin 20
#define RS PIN_B2 //= LCD pin 19
#define WR PIN_B5 //= LCD pin 18
#define RD PIN_B4 //= LCD pin 17

#define DB0 PIN_D0 //= LCD pin 16-9
#define DB1 PIN_D1
#define DB2 PIN_D2
#define DB3 PIN_D3
#define DB4 PIN_D4
#define DB5 PIN_D5
#define DB6 PIN_D6
#define DB7 PIN_D7


int1 GHWWR= 1, GHWRD=1, GHWSTA=0, GHWCMD=0;
int1 DoNothing=1;


void sim_reset()
{
/* 1. Init data port setup (if required by port architecture) */

set_tris_b(0x00);
set_tris_d(0x00);

/* 2. Make C/D, /RD, /WR, /CE to outputs (if required by port architecture) */

// Check your processor hardware manual for which register to operate in order
// to configure I/O port pins as output

output_high(CS);
output_high(RD);
output_high(WR);


/* 3. Set LCD reset line /RST active low (if /RST is connected to a port bit) */
output_low(RES);

/* 4. Set LCD reset line /RST passive high (if /RST is connected to a port bit) */
output_high(RES);

}//sim_reset()

void simwrby(int1 adr, unsigned int8 dat)
{

//RES=1; //Added by Prashant for Testing
/* A: Set C/D line according to adr, Set /CE line active low */

if(adr==1)
{
output_high(RS);
}
else
{
output_low(RS);
}//if(adr==0)

output_low(CS);

/* B1: Make data port an output (if required by port architecture) */

// Check your processor hardware manual for which register to operate in order
// to configure DB port pins as outputs

set_tris_b(0x00);
set_tris_d(0x00);

output_low(WR);

/* B2: Write data to data port */
// DB = dat;

if(bit_test(dat,0))
{
output_high(DB0);
}
else
{
output_low(DB0);
}

if(bit_test(dat,1))
{
output_high(DB1);
}
else
{
output_low(DB1);
}

if(bit_test(dat,2))
{
output_high(DB2);
}
else
{
output_low(DB2);
}

if(bit_test(dat,3))
{
output_high(DB3);
}
else
{
output_low(DB3);
}

if(bit_test(dat,4))
{
output_high(DB4);
}
else
{
output_low(DB4);
}

if(bit_test(dat,5))
{
output_high(DB5);
}
else
{
output_low(DB5);
}

if(bit_test(dat,6))
{
output_high(DB6);
}
else
{
output_low(DB6);
}

if(bit_test(dat,7))
{
output_high(DB7);
}
else
{
output_low(DB7);
}


/* C: Set /WR active low, (Delay min 80 ns), */

output_low(WR);

/* D: Set /WR passive high */
output_high(WR);


/* E: Set /CE passive high */
output_high(CS);

}//simwrby

void ghw_io_init()
{


set_tris_b(0x00);
set_tris_d(0x00);

output_high(CS);
output_high(RD);
output_high(WR);
output_high(RES);


delay_ms(5);

simwrby(GHWCMD, 0xAE); /* Display Off */
simwrby(GHWCMD, 0xA5); /* Entire display on | (0-1) */

simwrby(GHWCMD, 0xA0); /* Set ADC Alternative DireCtion | (0-1) Normal vertical direction*/
simwrby(GHWCMD, 0xC0); /* Norm/reverse SHL | (0x00 or 0x08) */
simwrby(GHWCMD, 0xA3); /* LCD bias ratio 3) */

simwrby(GHWCMD, 0x20); /* Regulator resistor ration select | (0-7) */

simwrby(GHWCMD, 0x3F); /* Full Contrast-Reference Voltage Settings for contrast */

simwrby(GHWCMD, 0xA5); /* Normal display / Entire display on | (0-1) */

simwrby(GHWCMD, 0xAF); /* Display on */


delay_ms(5);

}//ghw_io_init()



void main() {


delay_ms(10);
ghw_io_init(); // Must initialize the LCD

for(;;) {

DoNothing=1;

}//for(;;)

}//main()



Thanks........
baronz
Guest
PostPosted: Wed Jan 11, 2006 2:37 am     Reply with quote
this works on pic 16F876... i tried a lot to initialize it so i think it's nice to share the knowledge :D



int x=0;

output_high(SCLK);
delay_us(10);
output_high(CS1B);
delay_us(10);
output_high(RS);
delay_us(10);
output_high(RESETB);
delay_us(10);
output_low(RESETB);
// wait for stabilizing the power
delay_ms(300);
output_high(RESETB);
delay_ms(3);

output_low(CS1B);

delay_ms(3);

istruzione = 0xA0; // ADC Select -> reverse direction
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xC8; // SHL Select -> normal direction //C0
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xA2; // LCD Bias Select //A2
scrivi_controllo(istruzione);

delay_ms(3);


/* Attivazione in sequenza di VC,VR,VF */

istruzione = 0x2C; // power control -> voltage converter
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x2E; // power control -> voltage regulator
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x2F; // power control -> voltage follower
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x24; // Regulatore resistor select //24
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x81; // reference voltage (1a istruzione)
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x13; // reference voltage (2a istruzione) //0x0C
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xA4; // entire display OFF
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xA6; // reverse display OFF
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xB0; // set page address -> pagina 0
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x40; // Initial display line
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x10; // set column address MSB -> 0 (1a istruzione)
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0x00; // set column address LSB -> 0 (2a istruzione)
scrivi_controllo(istruzione);

delay_ms(3);

istruzione = 0xAF; // Display ON
scrivi_controllo(istruzione);

delay_ms(3);

clear_all();


void scrivi_controllo(char n){ // Daniele riscritta 16/12/2005 per microchip
signed int i=0;
int bit[8]={0,0,0,0,0,0,0,0};
output_low(RS); // RS = 0 istruzione di controllo

if (n & 0x80) bit[7]=1;
if (n & 0x40) bit[6]=1;
if (n & 0x20) bit[5]=1;
if (n & 0x10) bit[4]=1;
if (n & 0x08) bit[3]=1;
if (n & 0x04) bit[2]=1;
if (n & 0x02) bit[1]=1;
if (n & 0x01) bit[0]=1;
for (i=7;i>-1;i--){ // Manda i bit dal MSB al LSB
output_low(SCLK);
if (bit[i]==0) output_low(SID);
else output_high(SID);
output_high(SCLK);
} // for
}
baronz
Guest
PostPosted: Wed Jan 11, 2006 2:39 am     Reply with quote
i forgot to say that's the code for the serial command to the display Wink
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