Newhaven Display Forum

Newhaven Products => TFTs => Topic started by: dfansler on October 16, 2015, 09:43:10 AM

Title: will not intialize NHD-7.0-800480EF-20 with NHD-7.0-800480EF-ATXV#-T
Post by: dfansler on October 16, 2015, 09:43:10 AM

I have the above system attached to an Atmel AT32UC processor.  I can not get it to initialize or to display data.  The software is based on the example given for the SSD1963 by New Haven Displays.

I used to use the same display with the SSD1963 built in and had it running before NHD came out with the controller separate.

I hope someone can tell me what I am doing wrong
David

Here is the code

void TFT_7_Write_Data (unsigned char data1)  //no joy with delays
{
   gpio_set_pin_high(LCD_RS);
   AVR32_GPIO.port[3].ovr = data1;         //send data to LCD
   gpio_set_pin_low(LCD_WR);
   gpio_set_pin_high(LCD_WR);

}
void TFT_7_Write_Command (unsigned char command)
{
   int x;

   AVR32_GPIO.port[3].ovr = command;
   gpio_set_pin_low(LCD_RS);
   gpio_set_pin_low(LCD_WR);
   gpio_set_pin_high(LCD_WR);
   delay_us(10);                  //was 1200
}
void TFT_7_Command_Write(unsigned char REG, unsigned char VALUE)
{
   int temp_1;

   AVR32_GPIO.port[3].ovr = REG;         //send data to LCD
   gpio_set_pin_low(LCD_RS);
   gpio_set_pin_low(LCD_WR);
   gpio_set_pin_high(LCD_WR);
   gpio_set_pin_high(LCD_RS);
   AVR32_GPIO.port[3].ovr = VALUE;         //send data to LCD

   return;
}
void TFT_7_Init(void)
{
   //new setup as of 09-25-2015
   gpio_set_pin_low(LCD0_CS);         //enable both LCD Displays
   gpio_set_pin_low(LCD1_CS);
   gpio_set_pin_low(LCD_WR);
   gpio_set_pin_low(LCD_RESET);
   delay_ms(120);
   gpio_set_pin_high(LCD_RESET);
   delay_ms(120);
   gpio_set_pin_high(LCD_BL);
   TFT_7_Write_Command(0x01);      //software reset
   delay_ms(120);
   TFT_7_Write_Command(0xe2);      //set multiplier and divider for PLL
   gpio_set_pin_high(LCD_RS);      //raise RS
   TFT_7_Write_Data(0x1d);      //18bit,Disable FRC,TFT FRC Disable, TFT Mode
   TFT_7_Write_Data(0x02);      //18bit,Disable FRC,TFT FRC Disable, TFT Mode
   TFT_7_Write_Data(0x04);      //18bit,Disable FRC,TFT FRC Disable, TFT Mode
   TFT_7_Command_Write(0xe0,0x01);   //start pll
   delay_ms(1);
   TFT_7_Command_Write(0xe0,0x03);   //lock pll
   TFT_7_Write_Command(0x01);      //software reset
   delay_ms(120);
   TFT_7_Write_Command(0xb0);      //set lcd mode set tft 18 bits mode
   gpio_set_pin_high(LCD_RS);
   TFT_7_Write_Data(0x0c);      //18bit,Disable FRC,TFT FRC Disable, TFT Mode
   TFT_7_Write_Data(0x80);      //was 80  now TFT Mode
   TFT_7_Write_Data(0x03);      //high byte of horz panel size
   TFT_7_Write_Data(0x1f);      //low byte of horz panal size
   TFT_7_Write_Data(0x01);      //high byte of vert panel size
   TFT_7_Write_Data(0xdf);      //low byte of vert panel size
   TFT_7_Write_Data(0x00);      //rgb sequence
   TFT_7_Command_Write(0xf0,0x00);   //set pixel data interface to 8 bit
   TFT_7_Command_Write(0x36,0x09);   //set address mode -  top to bot from sp to ep  was 09
   TFT_7_Write_Command(0xe6);      //set lshift freq
   gpio_set_pin_high(LCD_RS);      //raise RS
   TFT_7_Write_Data(0x02);
   TFT_7_Write_Data(0xff);
   TFT_7_Write_Data(0xff);
   TFT_7_Write_Command(0xb4);      //set horiz period
   gpio_set_pin_high(LCD_RS);
   TFT_7_Write_Data(0x02);//?0x03
   TFT_7_Write_Data(0xf8);//?0xef
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Data(0x44);//0xa3
   TFT_7_Write_Data(0x0f);//0x07
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Command(0xb6);   //set vert period
   gpio_set_pin_high(LCD_RS);
   TFT_7_Write_Data(0x01);//0x01
   TFT_7_Write_Data(0xf8);//0xef
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Data(0x13);//0x04
   TFT_7_Write_Data(0x07);//0x01
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Data(0x00);//0x00
   TFT_7_Write_Command(0x13);   //enter normal mode
   TFT_7_Write_Command(0x38);   //exit idle mode
   TFT_7_Write_Command(0x29);   //set display on
   delay_ms(10);
}