nishal said:
nishal said:
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
}