TFT display interfacing problem with STM32FRE having SSD1963 graphicscontroller

[ykn]

hi ,

i tried to interface TFT display 800X480 with stm32f401re. TFT display interface with SSD1963.

now the thing is that display does not showing anything .

i dont know the problem with initialization process or else.

the pin mainly used RS#, CS#.WR#, RST, RD# and 0-15 data pin . please go through the below pragamm suggest me where i am wrong . for initialization process of PIN i used STMcubeMX.

void Write_Command(unsigned char command) {
    HAL_GPIO_WritePin(GPIOC, GPIO_CS_Pin, 0);	
	   
	
    HAL_GPIO_WritePin(GPIOC, GPIO_RD_Pin, 1);        /* make sure the RD  is HIGH just to be sure */
    HAL_GPIO_WritePin(GPIOC, GPIO_RS_Pin, 0);       
    HAL_GPIO_WritePin(GPIOC, GPIO_WR_Pin, 0); 
    HAL_Delay(1);
    
	  GPIOA->ODR = command;
    
    HAL_Delay(1);
    HAL_GPIO_WritePin(GPIOC, GPIO_WR_Pin, 1);         
    HAL_GPIO_WritePin(GPIOC, GPIO_CS_Pin, 1);         
 
}
 
void Write_Data(unsigned char Data) {
	      HAL_GPIO_WritePin(GPIOC, GPIO_CS_Pin, 0); 	
      
    HAL_GPIO_WritePin(GPIOC, GPIO_RD_Pin, 1);        /* make sure the RD  is HIGH just to be sure */
    HAL_GPIO_WritePin(GPIOC, GPIO_RS_Pin, 1);       
    HAL_GPIO_WritePin(GPIOC, GPIO_WR_Pin, 0);
    HAL_Delay(1);
    
	  GPIOA->ODR = Data;
    
    HAL_Delay(1);
    HAL_GPIO_WritePin(GPIOC, GPIO_WR_Pin, 1);         
    HAL_GPIO_WritePin(GPIOC, GPIO_CS_Pin, 1);         
 
}
void Command_Write(unsigned char REG,unsigned char VALUE) {
    Write_Command(REG);
    Write_Data(VALUE);
}
 
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
 
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOC, GPIO_RST_Pin|GPIO_CS_Pin|GPIO_RS_Pin|GPIO_RD_Pin 
                          |GPIO_WR_Pin, GPIO_PIN_RESET);
 
  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3 
                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 
                          |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11 
                          |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15, GPIO_PIN_RESET);
 
  /*Configure GPIO pins : GPIO_RST_Pin GPIO_CS_Pin GPIO_RS_Pin GPIO_RD_Pin 
                           GPIO_WR_Pin */
  GPIO_InitStruct.Pin = GPIO_RST_Pin|GPIO_CS_Pin|GPIO_RS_Pin|GPIO_RD_Pin 
                          |GPIO_WR_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
  /*Configure GPIO pins : PA0 PA1 PA2 PA3 
                           PA4 PA5 PA6 PA7 
                           PA8 PA9 PA10 PA11 
                           PA12 PA13 PA14 PA15 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3 
                          |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7 
                          |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11 
                          |GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
}
void begin()
{
HAL_GPIO_WritePin(GPIOA, GPIO_RST_Pin, 0);
     __NOP;
	   __NOP;
	   __NOP;
    
  HAL_GPIO_WritePin(GPIOA , GPIO_RST_Pin, 1);
      __NOP;   __NOP;   __NOP;
	
   Write_Command(0x01); //Software Reset
   Write_Command(0x01);
   Write_Command(0x01);
   Command_Write(0xe0,0x01); // START PLL
   Command_Write(0xe0,0x03); // LOCK PLL
   Write_Command(0xb0); //SET LCD MODE SET TFT 18Bits MODE
   Write_Data(0x08); //SET TFT MODE & hsync+Vsync+DEN MODE
	Write_Data(0x80); //SET TFT MODE & hsync+Vsync+DEN MODE
	Write_Data(0x03); //SET horizontal size=800-1 HightByte
	Write_Data(0x1f); //SET horizontal size=800-1 LowByte
	Write_Data(0x01); //SET vertical size=480-1 HightByte
	Write_Data(0xdf); //SET vertical size=480-1 LowByte
	Write_Data(0x00); //SET even/odd line RGB seq.=RGB
	Command_Write(0xf0,0x00); //SET pixel data I/F format=8bit
	Command_Write(0x3a,0x60); // SET R G B format = 6 6 6
	Write_Command(0xe2); //SET PLL freq=113.33MHz ;
	Write_Data(0x22);
	Write_Data(0x03);
	Write_Data(0x04);
	Write_Command(0xe6); //SET PCLK freq=33.26MHz ; pixel clock frequency
	Write_Data(0x00);
	Write_Data(0xe7);
	Write_Data(0x4f);
	Write_Command(0xb4); //SET HBP,
	Write_Data(0x20); //SET HSYNC Total = 8367
	Write_Data(0xaf);
	Write_Data(0x00); //SET HBP = 163
	Write_Data(0xa3); 
 
	Write_Data(0x07); //SET VBP 8 = 7 + 1
	Write_Data(0x00); //SET Hsync pulse start position
	Write_Data(0x00);
	Write_Data(0x00); //SET Hsync pulse subpixel start position
	Write_Command(0xb6); //SET VBP,
	Write_Data(0x01); //SET Vsync total 496 = 495 + 1
	Write_Data(0xef);
	Write_Data(0x00); //SET VBP = 4
	Write_Data(0x04);
	Write_Data(0x01); //SET Vsync pulse 2 = 1 + 1
	Write_Data(0x00); //SET Vsync pulse start position
	Write_Data(0x00);
	Write_Command(0x2a); //SET column address
	Write_Data(0x00); //SET start column address=0
	Write_Data(0x00);
	Write_Data(0x03); //SET end column address=800
	Write_Data(0x1f);
	Write_Command(0x2b); //SET page address
	Write_Data(0x00); //SET start page address=0
	Write_Data(0x00);
	Write_Data(0x01); //SET end page address=480
	Write_Data(0xdf);
	Write_Command(0x29); //SET display on
	Write_Command(0x2c);
}

thanking you

[T J]

You should check the data sheet for the SSD chip,

I think you should have delays for the PLL to start up,

you are not waiting anywhere