Mirrored display on TFT LCD

[nishal]

pic32 tft

Hi all,
I am using PIC32 to control TFT lcd (800x480) via Epson display driver S1D13742. Everything works well except all the displayed images are mirrored.

Please point out a solution.

Thanks in advance

- Nishal

 

[doraemon]

s1d13742 datasheet

Hello!

I have used other Epson drivers. There is a mirror setting.
Check the manual.

Dora.

Hi all,
I am using PIC32 to control TFT lcd (800x480) via Epson display driver S1D13742. Everything works well except all the displayed images are mirrored.

Please point out a solution.

Thanks in advance

- Nishal

 

[nishal]

mirrored display

Hi Dora,
Thanks for the reply. I couldn't find a register setting in the datasheet. Could you just explain if it is written with other term?

Nishal

 

[doraemon]

pic32 tft lcd

Hello!

I checked the datasheet. Indeed, there is apparently no register to control
a flip. Sorry. There are registers for hardware rotations, but no flip.

But before entering in too much investigation, can you try to set a window
for instance topleft = 10, 10, bottomright = 20, 15, draw data inside and
then check where the small rectangle is displayed. If it shows up close to the
left-top corner (provided there is no rotation setup), then it's fine and you
will have to look at your code rather than at the LCD.

Dora.

Hi Dora,
Thanks for the reply. I couldn't find a register setting in the datasheet. Could you just explain if it is written with other term?

Nishal

 

[nishal]

s1d13742 display mirror

Hi,
I wrote code and the box displays on the top right corner (swivelview = 0 rotation). As U said i need to alter all the lcd updation functions.

I have contacted LCD manufacturer (Ampire) as a last attempt.

Anyway, thanks dora

Nishal

 

[epareja]

Re: s1d13742 display mirror

Hello Nishal... I have worked with the ILI9320 displays and the Microchip Graphics Library but now I want to use a larger display (7 inch 800x480) and I found I need the S1D1342. I just bought the driver and I'm waiting for the LCD to arrive.

I'm working on the PCB design and I've found that is a very challenging task due to the chaos in the pin assignment of the driver. The MCU dataport isn't contiguous. Do you have or can share with me the PCB design or the driver software?

Thank you very much

Ernesto Pareja

MOD: ADVERTISING LINK REMOVED

 

[nishal]

Hi Ernesto,
Please see your email.

-Nishal

 

[ssureshtronics]

Re: s1d13742 display mirror

HI Nisharl,,,
I've a doubt to clarify with you. I'm working with Ampire 10.4" 640X480 TFT driving using Solomon SSD1963. Its working fine but some time it flickers continously and image was jumping rarely. I checked with the hardware as current aspect and also the software, Since the flicker was unoredictable i stunned to proceed.
As you also used AMPIRE panel i need some suggestion from you.
Thanks.

Hi,
I wrote code and the box displays on the top right corner (swivelview = 0 rotation). As U said i need to alter all the lcd updation functions.

I have contacted LCD manufacturer (Ampire) as a last attempt.

Anyway, thanks dora

Nishal

 

[nishal]

Re: s1d13742 display mirror

Hi SSureshtronics,
It is hard to figure out without seeing the schematic / code.

As a debug procedure, try the following.
1. Write a separate code to display check patterns on the display. Try to include only display related functions and delete all other functions
2. check to see whether any loose connections with the flex cable/connector. Perform continuity check on both ends of display connector pin by pin
3. Check whether any component is heating up during the flicker
4. Check to see the outputs of regulator IC is constant at the time of flicker.

Hope this helps

-Nishal

HI Nisharl,,,
I've a doubt to clarify with you. I'm working with Ampire 10.4" 640X480 TFT driving using Solomon SSD1963. Its working fine but some time it flickers continously and image was jumping rarely. I checked with the hardware as current aspect and also the software, Since the flicker was unoredictable i stunned to proceed.
As you also used AMPIRE panel i need some suggestion from you.
Thanks.

 

[ssureshtronics]

Re: s1d13742 display mirror

Thanks for reply Nishal...

As you said I check with only displaying the screen and my controller will do no more after filling the screen, I hope you know that SSD1963 will refresh continously from the inbuilt buffer to the screen. I tried by halting my controller after the screen displayed. even there is a flicker. I hope u will get some more from this point. When i powered my module it displays perfectly and no flicker at all exactly after a two minutes it get flicker even my MCU was in halt. I doubted with the capacitors on the power section and the current sourcing of my 3.3 and 1.2 volt regulators, But they are healthy enough to supply required current. Even i recycle the power immidiately right after the flicker occur the secong time also flickering. If i left for few minutes without powering then i apllied power means it works well for same two minutes and then flicker starts. My regulators are cool only, but i observed little warm over the SSD1963, so i tried with the heat sink also but no effect. I have two panels in both panels same result only, So i couldn't doubt the panel. I hope your discussion...

Here I've attached my schem.

And my SSD1963 initilisation code was

//#include <C8051F120.H>
#include <intrins.h>
#include "SSD1963\SSD1963.h"
#include "GRAPHICS\Graphics.h"
//__________________________________________________________________________________//
/// Pin allocation details
// P1^0 - P1^7 => D0 - D7 PORT 1 used as a data lines.
//
// Register select(RS) => P2^7 low for commands, high for data.
//
// Write(WR#) => P2^6 low during write process
//
// Read(RD#) => P2^5 low during read process
//
// Chip select(CS#) => P2^4 low to select the chip
//
// Reset(RST) => P2^3 hardware Reset signal, low to reset.
//__________________________________________________________________________________//


data COLORS GLOBAL_COLOR,BG_COLOR;
data POSITION CURRENT,BUTTON_XY;
bit scroll=0;
idata unsigned int scroll_point=10;


// Function to write the commands to the LCD

void COMMAND_WRITE(unsigned char comm)
{
// CONFIG_AS_OUT

SFRPAGE = 0x0f;
ENABLE_COMMAND // SELECT COMMAND REGISTER, MAKE LOW
NS_Delay(1);

DPORT = comm; // MOVE DATA

SELECT_LCD // SELECT THE CHIP, MAKE LOW
NS_Delay(1);

ENABLE_WRITE // ENABLE WRITE, MAKE LOW
NS_Delay(1);

DESELECT_LCD // DESELECT CHIP, MAKE HIGH
NS_Delay(1);

// DISABLE_WRITE // DISABLE WRITE, MAKE HIGH
// NS_Delay(1);

ENABLE_DATA; // SELECT DATA REGISTER, MAKE COM_DATA pin as HIGH
NS_Delay(1);

// CONFIG_AS_IN

}

// FUNCTION TO WRITE THE DATA TO THE LCD

void DATA_WRITE(unsigned char DAT)
{
// CONFIG_AS_OUT

SFRPAGE = 0x0f;
ENABLE_DATA // SELECT DATA REGISTER, MAKE COM_DATA pin as LOW
DPORT = DAT; // MOVE DATA
SELECT_LCD // SELECT THE CHIP, MAKE LOW
NOP
// ENABLE_WRITE // ENABLE WRITE, MAKE LOW
DESELECT_LCD // DESELECT CHIP, MAKE HIGH
// DISABLE_WRITE // DISABLE WRITE, MAKE HIGH
// ENABLE_DATA // SELECT DATA REGISTER, MAKE COM_DATA pin as HIGH

// CONFIG_AS_IN
}

void COMMAND_PARAMETER(unsigned char cmd, unsigned char pamtr)
{
COMMAND_WRITE(cmd);
DATA_WRITE(pamtr);
}

// Function to display color data from RGB format
void DISP_DATA(unsigned long int color_data)
{
COLORS R_G_B;
R_G_B.COLOR = color_data;
DATA_WRITE(R_G_B.RGB.RED); // send RED data
DATA_WRITE(R_G_B.RGB.GREEN); // send GREEN data
DATA_WRITE(R_G_B.RGB.BLUE); // send BLUE data
}


// Function to display the given color to full screen are particular area
void FILL_SCREEN()
{
unsigned int data x;
unsigned int data y;
// COLORS R_G_B;
SET_WINDOW(0,639,0,479);

COMMAND_WRITE(write_memory_start);
// R_G_B.COLOR = color;

for(x=0;x<480;x++)
{
for(y=0;y<640;y++)
{
// DISP_DATA(color);
DATA_WRITE(BG_COLOR.RGB.RED); // send RED data
DATA_WRITE(BG_COLOR.RGB.GREEN); // send GREEN data
DATA_WRITE(BG_COLOR.RGB.BLUE); // send BLUE data
}
}
}






// Function to initialise the LCD controller
void INIT_LCD()
{
SFRPAGE = 0x0f;
RESET = 0;
MS_Delay(5); //Hardware reset
RESET = 1;
MS_Delay(5);

// COMMAND_WRITE(soft_reset); // Software reset
COMMAND_WRITE(soft_reset); // Software reset
MS_Delay(2);

// COMMAND_PARAMETER(set_pll,0x01); // Enable PLL REF, CLOCK = 10 MHz
COMMAND_WRITE(set_pll_mn);
DATA_WRITE(0x2d); // set PLL as 100 MHz (M=30, N=3)
DATA_WRITE(0x03);
DATA_WRITE(0x04);
COMMAND_PARAMETER(set_pll,0x01); // Enable PLL REF, CLOCK = 10 MHz
MS_Delay(10);
COMMAND_PARAMETER(set_pll,0x03); // Set PLL as clock source
// DATA_WRITE(0x03);
MS_Delay(10);

COMMAND_WRITE(soft_reset); // Software reset
MS_Delay(2);

COMMAND_WRITE(set_lshift_freq); // Select left shift frequency
// DATA_WRITE(0x04); // Select pixel clock frequency as 26 MHz.
// DATA_WRITE(0x28);
// DATA_WRITE(0xf6);

// DATA_WRITE(0x03); // Select pixel clock frequency as 24 MHz.
// DATA_WRITE(0xD0);
// DATA_WRITE(0x8d);

DATA_WRITE(0x03); // Select pixel clock frequency as 24 MHz.
DATA_WRITE(0xc5);
DATA_WRITE(0xff);
MS_Delay(2);

COMMAND_WRITE(set_lcd_mode); // Select LCD mode, TFT or TTL
DATA_WRITE(0x00); // Select TFT 18-bit mode
DATA_WRITE(0x00); // Select HSYNC+VSYNC+DEN, TFT mode
DATA_WRITE(0x02); // Horizontal panel size highrer byte
DATA_WRITE(0x7F); // Horizontal panel size lower byte (640-1)
DATA_WRITE(0x01); // Vertical panel size higher byte
DATA_WRITE(0xDF); // Vertical panel size lower byte (480-1)
DATA_WRITE(0x00); // Select even and odd line RGB sequence (RGB)

COMMAND_PARAMETER(set_pixel_data_interface,0x00); // Select pixel data interface as 8-bit
COMMAND_PARAMETER(set_pixel_format,0x60); // Select pixel data format as 18 bpp


//As per the AMPIRE panel
COMMAND_WRITE(set_vert_period); // Select total horizontal period
DATA_WRITE(0x02);
DATA_WRITE(0x0C); // Set total V period as 525
DATA_WRITE(0x00);
DATA_WRITE(0x2C);
DATA_WRITE(0x01); // Set VSYNC Porch as 35
DATA_WRITE(0x00);
DATA_WRITE(0x00);

COMMAND_WRITE(set_hori_period); // Select total vertical period
DATA_WRITE(0x03); // vertical total period high byte -1
DATA_WRITE(0x1f); // vertical total period low byte // Select total H period as 800
DATA_WRITE(0x00); // High byte of non-display period
DATA_WRITE(0x9f); // Low byte of non-display period -1 // Select HSYNC Porch as 160
DATA_WRITE(0x5f); // VSYNC pulse width -1
DATA_WRITE(0x00); // High byte vsync pulse start
DATA_WRITE(0x00); // Low byte vsync pulse start
DATA_WRITE(0x00);



COMMAND_WRITE(set_column_address); // Select the coloumn address
DATA_WRITE(0x00);
DATA_WRITE(0x00);
DATA_WRITE(0x02);
DATA_WRITE(0x7F); // Set coloumn address as 0 to 640-1

COMMAND_WRITE(set_page_address); // Select the page address
DATA_WRITE(0x00);
DATA_WRITE(0x00);
DATA_WRITE(0x01);
DATA_WRITE(0xdf); // Set end page address as 0 to 480-1
FILL_SCREEN();

/* COMMAND_WRITE(set_post_proc); // 0xBC
DATA_WRITE(0x35); // Contrast
DATA_WRITE(0x75); // Brightness
DATA_WRITE(0x40); // Saturation
DATA_WRITE(0x01);
// SET_GAMMA(1)*/
COMMAND_WRITE(set_display_on); // Set display ON
}

// Function to set the display window

void SET_WINDOW(unsigned int start_x, unsigned int end_x, unsigned int start_y, unsigned int end_y)
{
COMMAND_WRITE(set_column_address); // Select the coloumn address
DATA_WRITE((start_x) >> 8);
DATA_WRITE(start_x);
DATA_WRITE((end_x) >> 8);
DATA_WRITE(end_x); // Set coloumn address as 0 to 640-1

COMMAND_WRITE(set_page_address); // Select the page address
DATA_WRITE((start_y) >> 8);
DATA_WRITE(start_y);
DATA_WRITE((end_y) >> 8);
DATA_WRITE(end_y); // Set end page address as 0 to 480-1
}

Hi SSureshtronics,
It is hard to figure out without seeing the schematic / code.

As a debug procedure, try the following.
1. Write a separate code to display check patterns on the display. Try to include only display related functions and delete all other functions
2. check to see whether any loose connections with the flex cable/connector. Perform continuity check on both ends of display connector pin by pin
3. Check whether any component is heating up during the flicker
4. Check to see the outputs of regulator IC is constant at the time of flicker.

Hope this helps

-Nishal

 

[nishal]

Re: s1d13742 display mirror

Firstly, the schematic is not readable due to low image quality.

As per your reply, we can set our focus to SSD1963 since the chip is warming. Display may be flickering due to chip temperature rise beyond its normal working temperature.

Try these steps...
Disconnect display flex cable and and all other cables that connect to display and operate for more than 2 minutes and see whether chip is heating up.
If still the SSD1963 chip is heating up, Check your GPIO in SSD1963. All the unused GPIO pins should to left open and set to output mode

Also read the absolute maximum rating described in the datasheet on page 76

-Nishal

Thanks for reply Nishal...

As you said I check with only displaying the screen and my controller will do no more after filling the screen, I hope you know that SSD1963 will refresh continously from the inbuilt buffer to the screen. I tried by halting my controller after the screen displayed. even there is a flicker. I hope u will get some more from this point. When i powered my module it displays perfectly and no flicker at all exactly after a two minutes it get flicker even my MCU was in halt. I doubted with the capacitors on the power section and the current sourcing of my 3.3 and 1.2 volt regulators, But they are healthy enough to supply required current. Even i recycle the power immidiately right after the flicker occur the secong time also flickering. If i left for few minutes without powering then i apllied power means it works well for same two minutes and then flicker starts. My regulators are cool only, but i observed little warm over the SSD1963, so i tried with the heat sink also but no effect. I have two panels in both panels same result only, So i couldn't doubt the panel. I hope your discussion...

Here I've attached my schem.

And my SSD1963 initilisation code was

//#include <C8051F120.H>
#include <intrins.h>
#include "SSD1963\SSD1963.h"
#include "GRAPHICS\Graphics.h"
//__________________________________________________________________________________//
/// Pin allocation details
// P1^0 - P1^7 => D0 - D7 PORT 1 used as a data lines.
//
// Register select(RS) => P2^7 low for commands, high for data.
//
// Write(WR#) => P2^6 low during write process
//
// Read(RD#) => P2^5 low during read process
//
// Chip select(CS#) => P2^4 low to select the chip
//
// Reset(RST) => P2^3 hardware Reset signal, low to reset.
//__________________________________________________________________________________//


data COLORS GLOBAL_COLOR,BG_COLOR;
data POSITION CURRENT,BUTTON_XY;
bit scroll=0;
idata unsigned int scroll_point=10;


// Function to write the commands to the LCD

void COMMAND_WRITE(unsigned char comm)
{
// CONFIG_AS_OUT

SFRPAGE = 0x0f;
ENABLE_COMMAND // SELECT COMMAND REGISTER, MAKE LOW
NS_Delay(1);

DPORT = comm; // MOVE DATA

SELECT_LCD // SELECT THE CHIP, MAKE LOW
NS_Delay(1);

ENABLE_WRITE // ENABLE WRITE, MAKE LOW
NS_Delay(1);

DESELECT_LCD // DESELECT CHIP, MAKE HIGH
NS_Delay(1);

// DISABLE_WRITE // DISABLE WRITE, MAKE HIGH
// NS_Delay(1);

ENABLE_DATA; // SELECT DATA REGISTER, MAKE COM_DATA pin as HIGH
NS_Delay(1);

// CONFIG_AS_IN

}

// FUNCTION TO WRITE THE DATA TO THE LCD

void DATA_WRITE(unsigned char DAT)
{
// CONFIG_AS_OUT

SFRPAGE = 0x0f;
ENABLE_DATA // SELECT DATA REGISTER, MAKE COM_DATA pin as LOW
DPORT = DAT; // MOVE DATA
SELECT_LCD // SELECT THE CHIP, MAKE LOW
NOP
// ENABLE_WRITE // ENABLE WRITE, MAKE LOW
DESELECT_LCD // DESELECT CHIP, MAKE HIGH
// DISABLE_WRITE // DISABLE WRITE, MAKE HIGH
// ENABLE_DATA // SELECT DATA REGISTER, MAKE COM_DATA pin as HIGH

// CONFIG_AS_IN
}

void COMMAND_PARAMETER(unsigned char cmd, unsigned char pamtr)
{
COMMAND_WRITE(cmd);
DATA_WRITE(pamtr);
}

// Function to display color data from RGB format
void DISP_DATA(unsigned long int color_data)
{
COLORS R_G_B;
R_G_B.COLOR = color_data;
DATA_WRITE(R_G_B.RGB.RED); // send RED data
DATA_WRITE(R_G_B.RGB.GREEN); // send GREEN data
DATA_WRITE(R_G_B.RGB.BLUE); // send BLUE data
}


// Function to display the given color to full screen are particular area
void FILL_SCREEN()
{
unsigned int data x;
unsigned int data y;
// COLORS R_G_B;
SET_WINDOW(0,639,0,479);

COMMAND_WRITE(write_memory_start);
// R_G_B.COLOR = color;

for(x=0;x<480;x++)
{
for(y=0;y<640;y++)
{
// DISP_DATA(color);
DATA_WRITE(BG_COLOR.RGB.RED); // send RED data
DATA_WRITE(BG_COLOR.RGB.GREEN); // send GREEN data
DATA_WRITE(BG_COLOR.RGB.BLUE); // send BLUE data
}
}
}






// Function to initialise the LCD controller
void INIT_LCD()
{
SFRPAGE = 0x0f;
RESET = 0;
MS_Delay(5); //Hardware reset
RESET = 1;
MS_Delay(5);

// COMMAND_WRITE(soft_reset); // Software reset
COMMAND_WRITE(soft_reset); // Software reset
MS_Delay(2);

// COMMAND_PARAMETER(set_pll,0x01); // Enable PLL REF, CLOCK = 10 MHz
COMMAND_WRITE(set_pll_mn);
DATA_WRITE(0x2d); // set PLL as 100 MHz (M=30, N=3)
DATA_WRITE(0x03);
DATA_WRITE(0x04);
COMMAND_PARAMETER(set_pll,0x01); // Enable PLL REF, CLOCK = 10 MHz
MS_Delay(10);
COMMAND_PARAMETER(set_pll,0x03); // Set PLL as clock source
// DATA_WRITE(0x03);
MS_Delay(10);

COMMAND_WRITE(soft_reset); // Software reset
MS_Delay(2);

COMMAND_WRITE(set_lshift_freq); // Select left shift frequency
// DATA_WRITE(0x04); // Select pixel clock frequency as 26 MHz.
// DATA_WRITE(0x28);
// DATA_WRITE(0xf6);

// DATA_WRITE(0x03); // Select pixel clock frequency as 24 MHz.
// DATA_WRITE(0xD0);
// DATA_WRITE(0x8d);

DATA_WRITE(0x03); // Select pixel clock frequency as 24 MHz.
DATA_WRITE(0xc5);
DATA_WRITE(0xff);
MS_Delay(2);

COMMAND_WRITE(set_lcd_mode); // Select LCD mode, TFT or TTL
DATA_WRITE(0x00); // Select TFT 18-bit mode
DATA_WRITE(0x00); // Select HSYNC+VSYNC+DEN, TFT mode
DATA_WRITE(0x02); // Horizontal panel size highrer byte
DATA_WRITE(0x7F); // Horizontal panel size lower byte (640-1)
DATA_WRITE(0x01); // Vertical panel size higher byte
DATA_WRITE(0xDF); // Vertical panel size lower byte (480-1)
DATA_WRITE(0x00); // Select even and odd line RGB sequence (RGB)

COMMAND_PARAMETER(set_pixel_data_interface,0x00); // Select pixel data interface as 8-bit
COMMAND_PARAMETER(set_pixel_format,0x60); // Select pixel data format as 18 bpp


//As per the AMPIRE panel
COMMAND_WRITE(set_vert_period); // Select total horizontal period
DATA_WRITE(0x02);
DATA_WRITE(0x0C); // Set total V period as 525
DATA_WRITE(0x00);
DATA_WRITE(0x2C);
DATA_WRITE(0x01); // Set VSYNC Porch as 35
DATA_WRITE(0x00);
DATA_WRITE(0x00);

COMMAND_WRITE(set_hori_period); // Select total vertical period
DATA_WRITE(0x03); // vertical total period high byte -1
DATA_WRITE(0x1f); // vertical total period low byte // Select total H period as 800
DATA_WRITE(0x00); // High byte of non-display period
DATA_WRITE(0x9f); // Low byte of non-display period -1 // Select HSYNC Porch as 160
DATA_WRITE(0x5f); // VSYNC pulse width -1
DATA_WRITE(0x00); // High byte vsync pulse start
DATA_WRITE(0x00); // Low byte vsync pulse start
DATA_WRITE(0x00);



COMMAND_WRITE(set_column_address); // Select the coloumn address
DATA_WRITE(0x00);
DATA_WRITE(0x00);
DATA_WRITE(0x02);
DATA_WRITE(0x7F); // Set coloumn address as 0 to 640-1

COMMAND_WRITE(set_page_address); // Select the page address
DATA_WRITE(0x00);
DATA_WRITE(0x00);
DATA_WRITE(0x01);
DATA_WRITE(0xdf); // Set end page address as 0 to 480-1
FILL_SCREEN();

/* COMMAND_WRITE(set_post_proc); // 0xBC
DATA_WRITE(0x35); // Contrast
DATA_WRITE(0x75); // Brightness
DATA_WRITE(0x40); // Saturation
DATA_WRITE(0x01);
// SET_GAMMA(1)*/
COMMAND_WRITE(set_display_on); // Set display ON
}

// Function to set the display window

void SET_WINDOW(unsigned int start_x, unsigned int end_x, unsigned int start_y, unsigned int end_y)
{
COMMAND_WRITE(set_column_address); // Select the coloumn address
DATA_WRITE((start_x) >> 8);
DATA_WRITE(start_x);
DATA_WRITE((end_x) >> 8);
DATA_WRITE(end_x); // Set coloumn address as 0 to 640-1

COMMAND_WRITE(set_page_address); // Select the page address
DATA_WRITE((start_y) >> 8);
DATA_WRITE(start_y);
DATA_WRITE((end_y) >> 8);
DATA_WRITE(end_y); // Set end page address as 0 to 480-1
}

 

[ec_nisarg]

hello, i am new to this forum, so please draw my attention if i make any mistake...

now my question is that.. i have same type of TFT display board from evolute solution, which uses ssd1963.. we are making display panels for lifts and want to use this board. but the board vendor has not supplied enough information, or sufficient data how to operate or interface the board. he only said that u can use this boar in either 8bit mode or 32bit mode...

where as I've referred the datasheet of ssd1963 (found on net v1.1), I could not got any idea for how to stary and from where to start...

please any one can help me to develop this project...???

 

[ec_nisarg]

ok i have developped this project on my own... (because no one has replied this thread still to the date..)

anyways thank you.....

 

[epareja]

Hi Ernesto,
Please see your email.

-Nishal

Hello Nishal, I haven't logged on loooong ago.

My email is epareja2 (at) gmail (dot) com

Can you send me the library for this driver S1D13742?

Thank you