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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Color LCD routines - Nokia 6100? / Epson S1D15G10 |
 Posted: Wed Mar 22, 2006 5:43 pm |
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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);
}
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Avery |
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Sun Apr 09, 2006 2:28 am |
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hi amcfall, great stuff !
It is indeed the display of the Nokia 6100.
I also have some of these displays but didn�t 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 ? |
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Tue Apr 11, 2006 6:35 am |
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@amcfall:
unfortunately very important functions are missing in your code:
-> "init_lcd" and "write_lcd"
please post them also !!!!! |
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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Posted: Tue Apr 11, 2006 6:53 am |
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| 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 |
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Storic
Joined: 03 Dec 2005
Posts: 182
Location: Australia SA
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Tue Apr 11, 2006 10:12 am |
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@amcfall:
thanks a lot, we are waiting  !!!!!!!
@Storic:
..you can find J1M�s code also in this code library, but his glcd is only valid for the PHILIPS controller, not for the epson ! |
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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Posted: Thu Apr 13, 2006 3:19 pm |
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| 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
}
}
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If anyone gets a chance to experiment and finds better init values do let us know.
Avery |
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Fri Apr 14, 2006 8:06 am |
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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 doesn�t 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 ! |
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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Posted: Fri Apr 14, 2006 8:42 am |
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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 |
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Sun Apr 16, 2006 8:32 am |
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...this was a hard job !
Well, i spent about "1day" playing around with the VOLUP, but it didn�t 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); |
it�s 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 ! |
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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Posted: Tue Apr 18, 2006 9:48 am |
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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 |
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newby
Joined: 26 Sep 2004
Posts: 32
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| Posted: Tue Apr 18, 2006 11:33 am |
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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 don�t get one of these the next time i order. |
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awelch
Joined: 03 Sep 2006
Posts: 2
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| Posted: Sun Sep 03, 2006 4:46 pm |
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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 |
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amcfall
Joined: 20 Oct 2005
Posts: 44
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| Posted: Tue Sep 05, 2006 6:03 am |
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| 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 |
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 |
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awelch
Joined: 03 Sep 2006
Posts: 2
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| Posted: Tue Sep 05, 2006 7:56 am |
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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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