Hi,
I bought the 3.2'' LCD TFT display from SainSmart to experiment a little bit with it. As far as I know it uses the SSD1289 controller.
In order to get it work I looked around the web for useful information and found on a discussion page this package containing information about pinout and some examples.
So I picked one example (the source code is at the end) and wired it up. The example says, that "DB9-DB16 to pin D0-D7" should be connected. But in the pinout diagram there is no pin DB16 but a pin DB8 on the same side. So I connected DB8-DB15 with pin D0-D7 (for data communication a 8 bit connection is needed). This makes for me sense. Then I uploaded the sketch onto the Arduino successfully and nothing happens - the screen remains white.
I rewired everything and tried it again: only a white screen. The I checked all the connections and they are right. So now I'm run out of steam and I have no idea how to solve this problem.
So could you help me a little bit?
I'm using the Arduino Uno R3 and the Arduino IDE 1.0.5.
Greetings,
mythbu
/*
The demo is in 8 bit mode,
DB9-DB16 to pin D0-D7 ; DB0 – DB8 to GND ; LDEA to 3.3V ; VCC to 5V ; GND to GND
RESET to A2
CS to A3
WR to A4
RS to A5
*/
#define Bus_16
#define LCD_RS 19
#define LCD_WR 18
#define LCD_CS 17
#define LCD_REST 16
void Lcd_Writ_Bus(char VH,char VL)
{
unsigned char i,temp,data;
data=VH;
for(i=0;i<8;i++)
{
temp=(data&0x01);
if(temp)
digitalWrite(i,HIGH);
else
digitalWrite(i,LOW);
data=data>>1;
}
data=VL;
for(i=8;i<16;i++)
{
temp=(data&0x01);
if(temp)
digitalWrite(i,HIGH);
else
digitalWrite(i,LOW);
data=data>>1;
}
digitalWrite(LCD_WR,LOW);
digitalWrite(LCD_WR,HIGH);
}
void Lcd_Write_Com(char VH,char VL)
{
digitalWrite(LCD_RS,LOW);
Lcd_Writ_Bus(VH,VL);
}
void Lcd_Write_Data(char VH,char VL)
{
digitalWrite(LCD_RS,HIGH);
Lcd_Writ_Bus(VH,VL);
}
void Lcd_Write_Com_Data(int com,int dat)
{
Lcd_Write_Com(com>>8,com);
Lcd_Write_Data(dat>>8,dat);
}
void Address_set(unsigned int x1,unsigned int y1,unsigned int x2,unsigned int y2)
{
Lcd_Write_Com_Data(0x0044,(x2<<8)+x1);
Lcd_Write_Com_Data(0x0045,y1);
Lcd_Write_Com_Data(0x0046,y2);
Lcd_Write_Com_Data(0x004e,x1);
Lcd_Write_Com_Data(0x004f,y1);
Lcd_Write_Com(0x00,0x22);
}
void Lcd_Init(void)
{
digitalWrite(LCD_REST,HIGH);
delay(5);
digitalWrite(LCD_REST,LOW);
delay(15);
digitalWrite(LCD_REST,HIGH);
delay(15);
Lcd_Write_Com_Data(0x0000,0x0001); delay(1); //????
Lcd_Write_Com_Data(0x0003,0xA8A4); delay(1); //0xA8A4
Lcd_Write_Com_Data(0x000C,0x0000); delay(1);
Lcd_Write_Com_Data(0x000D,0x080C); delay(1);
Lcd_Write_Com_Data(0x000E,0x2B00); delay(1);
Lcd_Write_Com_Data(0x001E,0x00B7); delay(1);
Lcd_Write_Com_Data(0x0001,0x2B3F); delay(1); //??????320*240 0x6B3F
Lcd_Write_Com_Data(0x0002,0x0600); delay(1);
Lcd_Write_Com_Data(0x0010,0x0000); delay(1);
Lcd_Write_Com_Data(0x0011,0x6070); delay(1); //0x4030 //?????? 16??
Lcd_Write_Com_Data(0x0005,0x0000); delay(1);
Lcd_Write_Com_Data(0x0006,0x0000); delay(1);
Lcd_Write_Com_Data(0x0016,0xEF1C); delay(1);
Lcd_Write_Com_Data(0x0017,0x0003); delay(1);
Lcd_Write_Com_Data(0x0007,0x0233); delay(1); //0x0233
Lcd_Write_Com_Data(0x000B,0x0000); delay(1);
Lcd_Write_Com_Data(0x000F,0x0000); delay(1); //??????
Lcd_Write_Com_Data(0x0041,0x0000); delay(1);
Lcd_Write_Com_Data(0x0042,0x0000); delay(1);
Lcd_Write_Com_Data(0x0048,0x0000); delay(1);
Lcd_Write_Com_Data(0x0049,0x013F); delay(1);
Lcd_Write_Com_Data(0x004A,0x0000); delay(1);
Lcd_Write_Com_Data(0x004B,0x0000); delay(1);
Lcd_Write_Com_Data(0x0044,0xEF00); delay(1);
Lcd_Write_Com_Data(0x0045,0x0000); delay(1);
Lcd_Write_Com_Data(0x0046,0x013F); delay(1);
Lcd_Write_Com_Data(0x0030,0x0707); delay(1);
Lcd_Write_Com_Data(0x0031,0x0204); delay(1);
Lcd_Write_Com_Data(0x0032,0x0204); delay(1);
Lcd_Write_Com_Data(0x0033,0x0502); delay(1);
Lcd_Write_Com_Data(0x0034,0x0507); delay(1);
Lcd_Write_Com_Data(0x0035,0x0204); delay(1);
Lcd_Write_Com_Data(0x0036,0x0204); delay(1);
Lcd_Write_Com_Data(0x0037,0x0502); delay(1);
Lcd_Write_Com_Data(0x003A,0x0302); delay(1);
Lcd_Write_Com_Data(0x003B,0x0302); delay(1);
Lcd_Write_Com_Data(0x0023,0x0000); delay(1);
Lcd_Write_Com_Data(0x0024,0x0000); delay(1);
Lcd_Write_Com_Data(0x0025,0x8000); delay(1);
Lcd_Write_Com_Data(0x004f,0); //???0
Lcd_Write_Com_Data(0x004e,0); //???0
Lcd_Write_Com(0x00,0x22);
}
void Pant(char VH,char VL)
{
int i,j;
digitalWrite(LCD_CS,LOW);
Address_set(0,0,239,319);
for(i=0;i<320;i++)
{
for (j=0;j<240;j++)
{
Lcd_Write_Data(VH,VL);
}
}
digitalWrite(LCD_CS,HIGH);
}
void setup()
{
for(int p=0;p<20;p++)
{
pinMode(p,OUTPUT);
}
Lcd_Init();
}
void loop()
{
Pant(0x0, 0x0);
delay(500);
Pant(0xff, 0x00);
delay(500);
Pant(0x00, 0xff);
delay(500);
Pant(0xff, 0xff);
delay(500);
}