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Color LCD routines - Nokia 6100? / Epson S1D15G10
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amcfall



Joined: 20 Oct 2005
Posts: 44

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Color LCD routines - Nokia 6100? / Epson S1D15G10
PostPosted: Wed Mar 22, 2006 5:43 pm     Reply with quote

This is for an LCD (128x128, 4096 colors) I bought from here:

http://www.sparkfun.com/commerce/product_info.php?products_id=569

I guess it's a Nokia clone, I don't know, I just bought a few because they were cheap. Here's some basic code for initialization and a pixel write function. I still need to experiment a little with the contrast and stuff, but on the 2 I have this code looks OK.

Code:


//basic routines to drive an ERpson S1D15G00 series based LCD, like the ones from sparkfun.com
// Epson S1D15G10 Command Set and init sequence stolen from sparkfun.com example source code
#include <18F4620.h>
#device adc=8
#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC_IO                 //Internal RC Osc, no CLKOUT
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOIESO                   //Internal External Switch Over mode disabled
#FUSES BORV21                   //Brownout reset at 2.1V
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOPUT                    //No Power Up Timer
#FUSES NOCPD                    //No EE protection
#FUSES STVREN                   //Stack full/underflow will cause reset
//#FUSES DEBUG
#FUSES NODEBUG                  //No Debug mode for ICD
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOWRT                    //Program memory not write protected
#FUSES NOWRTD                   //Data EEPROM not write protected
#FUSES NOEBTR                   //Memory not protected from table reads
#FUSES NOCPB                    //No Boot Block code protection
#FUSES NOEBTRB                  //Boot block not protected from table reads
#FUSES NOWRTC                   //configuration not registers write protected
#FUSES NOWRTB                   //Boot block not write protected
#FUSES NOFCMEN                  //Fail-safe clock monitor disabled
#FUSES NOXINST                  //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES NOPBADEN                 //PORTB pins are configured as digital I/O on RESET
#FUSES LPT1OSC                  //Timer1 configured for low-power operation
//#FUSES MCLR
#FUSES NOMCLR                   //Master Clear pin used for I/O


#use delay(clock=8000000)

#DEFINE   _LCDPWR PIN_D1 //LCD defines
#DEFINE CS PIN_A5
#DEFINE LCDCLOCK PIN_C3
#DEFINE LCDDATA PIN_C5
#DEFINE _RESET PIN_C4
#DEFINE BLCONTROL PIN_D0

// Epson S1D15G10 Command Set
#define DISON       0xaf   
#define DISOFF      0xae   
#define DISNOR      0xa6 
#define DISINV      0xa7 
#define COMSCN      0xbb   
#define DISCTL      0xca   
#define SLPIN       0x95   
#define SLPOUT      0x94   
#define PASET       0x75   
#define CASET       0x15   
#define DATCTL      0xbc   
#define RGBSET8     0xce   
#define RAMWR       0x5c   
#define RAMRD       0x5d   
#define PTLIN       0xa8   
#define PTLOUT      0xa9   
#define RMWIN       0xe0   
#define RMWOUT      0xee   
#define ASCSET      0xaa   
#define SCSTART     0xab   
#define OSCON       0xd1   
#define OSCOFF      0xd2   
#define PWRCTR      0x20   
#define VOLCTR      0x81   
#define VOLUP       0xd6   
#define VOLDOWN     0xd7   
#define TMPGRD      0x82   
#define EPCTIN      0xcd   
#define EPCOUT      0xcc   
#define EPMWR       0xfc   
#define EPMRD       0xfd   
#define EPSRRD1     0x7c   
#define EPSRRD2     0x7d   
#define NOP         0x25


void write_lcd(int1, unsigned int);
void init_lcd(int1);//0== 8 bit color, 1== send 16 bits (4096 color pallete)
void LCD_pixel_write8(unsigned int8, unsigned int8, unsigned int8);//8 bit color
void LCD_pixel_write16(unsigned int8, unsigned int8, unsigned int16);//takes a 16 bit color (RGB565) and shifts down to 12
void fill8(void);
void fill12(void);
void backlight_on(void);
void backlight_off(void);


void main()
{   
   unsigned int16 counter=0;
   unsigned int x,y;
   int8 eepromdata=123;
   long int eepromaddress=0;
   setup_wdt(WDT_OFF);
   setup_adc_ports(NO_ANALOGS|VSS_VDD);
   setup_adc(ADC_OFF|ADC_TAD_MUL_0);
   setup_psp(PSP_DISABLED);
   setup_spi(FALSE);
   setup_wdt(WDT_OFF);
   setup_timer_0(RTCC_INTERNAL);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DISABLED,0,1);
   setup_timer_3(T3_DISABLED|T3_DIV_BY_1);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
   setup_low_volt_detect(FALSE);

   while(1)
      {
      init_lcd(0);
      fill8();
      delay_ms(2000);
      init_lcd(1);
      fill12();
      delay_ms(2000);
                 }
}





void LCD_pixel_write8(unsigned int8 x, unsigned int8 y, unsigned int8 color)//8 bit color // x and y range 1-130 color 0-255 (RRRGGGBB)
   {
   if ((x > 130) | (x < 1) | (y > 130) | (y < 1))
      return;
   x=x+1;
   y=y-1;
   write_lcd(0, 0x75);//page start/end ram
   write_lcd(1, x);
   write_lcd(1, 131);
   write_lcd(0, 0x15);//column start/end ram
   write_lcd(1, y);
   write_lcd(1, 129);
   write_lcd(0, RAMWR);//RAM WRITE
   write_lcd(1, color);
   }


void LCD_pixel_write16(unsigned int8 x, unsigned int8 y, unsigned int16 color)// x and y range 1-128 color 16 bit (RRRRRGGGGGGBBBBB)
   {
   unsigned int8 colorhigh,colorlow,red,green,blue,data1,data2,data3;
   if ((x > 130) | (x < 1) | (y > 130) | (y < 1))
      return;
   x=x+1;
   y=y-1;
   colorhigh=make8(color,1);//high byte
   colorlow=make8(color,0);//low byte
   red = (colorhigh >> 3);
   green = ((colorhigh & 0b00000111) << 3) + ((colorlow & 0b11100000) >> 5);
   blue = (colorlow & 0b00011111);
   red=red>>1;//red was 5 bits, all now need to be 4
   green=green>>2;//green was 6 bits
   blue=blue>>1;
   data1=((red<<4)+green);//send data:RRRRGGGG
   data2=((blue<<4)+red);//BBBBRRRR
   data3=((green<<4)+blue);//GGGGBBBB
   write_lcd(0, 0x75);//page start/end ram
   write_lcd(1, x);
   write_lcd(1, 131);
   write_lcd(0, 0x15);//column start/end ram
   write_lcd(1, y);
   write_lcd(1, 129);
   write_lcd(0, RAMWR);//ram write
   write_lcd(1, data1);
   write_lcd(1, data2);
   write_lcd(1, data3);
   }



void fill12(void)
   {
   unsigned int16 i;
   unsigned int8 x;
   write_lcd(0, PASET);//page start/end ram
   write_LCD(1, 2);//for some reason it starts at 2
   write_LCD(1, 131);
   write_lcd(0, CASET);//column start/end ram   
   write_LCD(1, 0);
   write_LCD(1, 129);

   write_lcd(0, RAMWR);//write a background
   for (i=0; i< 16900; i++)
      {
      write_LCD(1, 0x0000);//black
      write_LCD(1, 0x0000);
      write_LCD(1, 0x0000);
      }
   for (x=1;x<=130;x++)//draw a border
      {
      lcd_pixel_write16(x,1,0xFBFF);
      lcd_pixel_write16(x,130,0xFBFF);
      lcd_pixel_write16(1,x,0xFBFF);
      lcd_pixel_write16(130,x,0xFBFF);
      }
   }

void fill8(void)
   {
   unsigned int16 i;
   unsigned int8 x;
   write_lcd(0, PASET);//page start/end ram
   write_LCD(1, 2);//for some reason it starts at 2
   write_LCD(1, 131);
   write_lcd(0, CASET);//column start/end ram   
   write_LCD(1, 0);
   write_LCD(1, 129);

   write_lcd(0, RAMWR);//write a background
   for (i=0; i< 16900; i++)
         write_LCD(1, 0x00);      //black
   for (x=1;x<=130;x++)//draw a border
      {
      lcd_pixel_write8(x,1,0xFF);
      lcd_pixel_write8(x,130,0xFF);
      lcd_pixel_write8(1,x,0xFF);
      lcd_pixel_write8(130,x,0xFF);
      }

   }

void backlight_on(void)
   {
   output_high(blcontrol);
   }


void backlight_off(void)
   {
   output_low(blcontrol);
   }



Avery
newby



Joined: 26 Sep 2004
Posts: 32

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PostPosted: Sun Apr 09, 2006 2:28 am     Reply with quote

hi amcfall, great stuff !

It is indeed the display of the Nokia 6100.

I also have some of these displays but didnīt find the time to port available codes of other uCs by myself. Therefore i am very thankfull to find your work here !

But what about the contrast and the other stuff - did you solve these problems ?
newby



Joined: 26 Sep 2004
Posts: 32

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PostPosted: Tue Apr 11, 2006 6:35 am     Reply with quote

@amcfall:
unfortunately very important functions are missing in your code:

-> "init_lcd" and "write_lcd"

please post them also !!!!!
amcfall



Joined: 20 Oct 2005
Posts: 44

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PostPosted: Tue Apr 11, 2006 6:53 am     Reply with quote

newby wrote:
@amcfall:
unfortunately very important functions are missing in your code:

-> "init_lcd" and "write_lcd"

please post them also !!!!!


DohH! I'll post that as soon as I remember.

I haven't done any more work, I'll have new boards here soon and I'll try different supply voltages and contrast settings then.

Avery
Storic



Joined: 03 Dec 2005
Posts: 182
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PostPosted: Tue Apr 11, 2006 7:04 am     Reply with quote

I found this while reviewing http://www.hobbypic.com/index.php?option=com_content&task=view&id=15&Itemid=36
I'm not sure if the screen are the same however there is a download that give you code in C.

Andrew
_________________
What has been learnt if you make the same mistake? Wink
newby



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Posts: 32

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PostPosted: Tue Apr 11, 2006 10:12 am     Reply with quote

@amcfall:
thanks a lot, we are waiting Very Happy !!!!!!!

@Storic:
..you can find J1Mīs code also in this code library, but his glcd is only valid for the PHILIPS controller, not for the epson !
amcfall



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Posts: 44

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PostPosted: Thu Apr 13, 2006 3:19 pm     Reply with quote

Code:




void write_lcd(int1 LCDmode, unsigned int data)//mode ==0 send a command, mode==1 sends data
   {
   if (!LCDmode)
      output_low(LCDDATA);//when entering commands: SI=LOW at rising edge of 1st SCL
   else
      output_high(LCDDATA);//send data
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //send data, 8th bit first
   if (data & 128)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //7th bit
   if (data & 64)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //6th bit
   if (data & 32)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //5th bit
   if (data & 16)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //4th bit
   if (data & 8)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //3rd bit
   if (data & 4)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //2nd bit
   if (data & 2)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   //1st bit
      if (data & 1)
      output_high(LCDDATA);
   else
      output_low(LCDDATA);
   output_low(LCDCLOCK);
   output_high(LCDCLOCK);
   output_high(CS);
   output_low(CS);   

   }





void init_lcd(int1 colormode)//colormode==0 8 bit
   {//mode ==0 send a command, mode==1 sends data
   unsigned int16 i;
   unsigned int8 x,y;
   output_low(_LCDPWR);//apply power to LCD
   delay_ms(250);
   output_low(CS);
   output_low(LCDDATA);
   output_high(LCDCLOCK);
   output_high(_reset);
   output_low(_reset);
   output_high(_reset);
   output_high(LCDCLOCK);
   output_high(LCDDATA);
   delay_ms(1);
   write_lcd(0, DISCTL);//display control
   write_LCD(1, 0x03);///original values
   write_LCD(1, 0x20);
   write_LCD(1, 0x0C);
   write_LCD(1, 0x00);

   write_lcd(0, NOP);//no op

   write_lcd(0, COMSCN);//common scan direction
   write_LCD(1, 0x01);

   write_lcd(0, OSCON);//oscillator on
   write_lcd(0, SLPOUT);//sleep out
   write_lcd(0, VOLCTR);//electronic volume control
   write_LCD(1, 0x05);//cares about lower 6 bits   V1 volume
   write_LCD(1, 0x01);//cares about lower 3 bits   1+Rb/Ra, supposed to specify "resistance ratio of internal resistor"

   write_lcd(0, PWRCTR);//power control
   write_LCD(1, 0x0f);//turn stuff on
   write_LCD(1, 0x64);

   write_lcd(0, DISINV);//inverse display

   write_lcd(0, DATCTL);//Data control
   write_LCD(1, 0x00);
   write_LCD(1, 0x00);

//   write_lcd(0, TMPGRD);//temp gradient
//   write_LCD(1, 0);//

   if (colormode == 0)//8 bit color
      write_LCD(1, 0x01);
   else
      write_LCD(1, 0x02);//4096 colors
   write_LCD(1, 0x00);

   write_lcd(0, NOP);//no op
   if (colormode == 0)//8 bit color
      {
      write_lcd(0, RGBSET8);//setup color lookup table
      //red
      write_LCD(1, 0);
      write_LCD(1, 2);
      write_LCD(1, 4);
      write_LCD(1, 6);
      write_LCD(1, 8);
      write_LCD(1, 10);
      write_LCD(1, 12);
      write_LCD(1, 15);
      //green
      write_LCD(1, 0);
      write_LCD(1, 2);
      write_LCD(1, 4);
      write_LCD(1, 6);
      write_LCD(1, 8);
      write_LCD(1, 10);
      write_LCD(1, 12);
      write_LCD(1, 15);
      //blue
      write_LCD(1, 0);
      write_LCD(1, 4);
      write_LCD(1, 9);
      write_LCD(1, 15);
      }


   write_lcd(0, DISON);//display on
   delay_ms(300);
   write_lcd(0, NOP);//no op
   for (i=0; i<150; i++)
      {
      write_lcd(0, VOLUP);//changes contrast, find correct setting by trial and error
      }



   }









If anyone gets a chance to experiment and finds better init values do let us know.

Avery
newby



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PostPosted: Fri Apr 14, 2006 8:06 am     Reply with quote

i found a few minutes for a quick and dirty test and after some adaptions it works also on a 18F2620 and 18F2680 !!!

The color doesnīt seem to be "stable" that means it takes some time (0.5 - 1s) until the color reaches the final color, i guess this has something to do with the contrast and temperature settings ?!?
As soon as i have had time to play around with tht init, i wll let you know !

Thanks a lot amcfall !
amcfall



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PostPosted: Fri Apr 14, 2006 8:42 am     Reply with quote

One thing to mess around wioth is how many times you send VOLUP (the last thing we do in init_lcd). Unfortunately it's all trial and error. Originally I had a delay in that loop so you could judge the changes easier, but I guess I removed that.

Enjoy

Avery
newby



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PostPosted: Sun Apr 16, 2006 8:32 am     Reply with quote

...this was a hard job !

Well, i spent about "1day" playing around with the VOLUP, but it didnīt change anything, there was no effect at all.
I tried a lot and finally my key issue was the DISCTL i had to change from your code

Code:
   write_lcd(0, DISCTL);//display control
   write_LCD(1, 0x03);///original values
   write_LCD(1, 0x20);
   write_LCD(1, 0x0C);
   write_LCD(1, 0x00);

to
Code:
   write_lcd(0, DISCTL);//display control
   write_LCD(1, 0x0C);
   write_LCD(1, 0x20);
   write_LCD(1, 0x0C);
   write_LCD(1, 0x00);


itīs only the 1st line which sets the clock dividing ratio, in the 2nd line 0x1F also functions but you can see some stripes if you take a closer look under a slight angle

this seems to me to give the best quality, with the above settings i am able to set the contrast and the colors are also OK !
amcfall



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PostPosted: Tue Apr 18, 2006 9:48 am     Reply with quote

Great, as soon as my boards show up I'll try your modification. Out of curiousity, what kind of LCD do you have? I have the latest from Sparkfun, the one with the brown ribbon cable. I guess the green cables version has different settings even though both use the same Epson chip.

Avery
newby



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PostPosted: Tue Apr 18, 2006 11:33 am     Reply with quote

I have "no idea" what type of LCD i have (i bought it at ebay), i only know that it is for the Nokia 6100 and has the green cables. Therefore i thought it has to be the epson controller - Bingo, the code works.

I also read in other forums that there is another epson controller around, the "S1D10605" which should be very rare and react similar to the philips - but still somehow different. I hope i donīt get one of these the next time i order.
awelch



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PostPosted: Sun Sep 03, 2006 4:46 pm     Reply with quote

hey.. how did you guys wire up the sparkfun LCD to the PIC..?

you're using the 18 series chips? running at 3.3v? I want to hook it up to a 16F877 (it's all I have).. are the LCDs 5 volt signal tolerant?

thanks Very Happy
amcfall



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PostPosted: Tue Sep 05, 2006 6:03 am     Reply with quote

awelch wrote:
hey.. how did you guys wire up the sparkfun LCD to the PIC..?

you're using the 18 series chips? running at 3.3v? I want to hook it up to a 16F877 (it's all I have).. are the LCDs 5 volt signal tolerant?

thanks Very Happy


I made a custom board, although the Sparkfun breakout board would work also. No, the LCD is not 5V tolerant. I have used both 3.3v pics and a level shifter.

Avery
awelch



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PostPosted: Tue Sep 05, 2006 7:56 am     Reply with quote

okay thanks..

That's what I thought and ordered some 74lvc125's to do the level shifting.. out of curiosity, which 3.3v pics did you use?

thanks again
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