arduino学习笔记-Mega 2560+TFT3.2寸屏的演示实验

奈何col 于 2012-6-17 10:50 编辑

经过了一段时间的学习，慢慢的对TFT 有一些些的了解，对于我们这些初学者来说，写驱动那是不可能的事情，唯一能做的就是看得懂驱动是啥、或者是很好的阅读驱动程序即可。如果是应用，那会这些足矣！如果是开发的，那还需要更多的学习和了解。之前群里的Zzz玩过TFT 3.2+mega2560的，只是他时间有点忙吧，没时间出来写测评，我现在能驱动了，就出来说一下是怎么用的吧。欢迎大家一起讨论实验中的问题，毕竟把问题都回答完了就会理解一点的。

首先所使用的器材：

一个mega 2560

一个mega V4 扩展板

一个 TFT 3.2寸（主控IC是SSD1289 、触控IC是XPT2046）

一条USB线

若干条杜邦线等等

在这里引用一下本链接的学习资料：http://www.geeetech.com/2012/04/interface-3-2tft-lcd-module-to-arduino/

大概的连接方法是这样的：

(LEDK -> GND) only 3.2″ TFT LCD

LEDA -> 5V

VCC -> 5V

RD -> 3.3V

GND -> GND

DB0->DB7 to pin D37->D30

DB8->DB15 to pin D22->D29

RS -> D38

WR -> D39

CS(pin6) -> D40

RSET-> D41

把线连接好以后，需要把这个库文件拷到Arduino IDE libraries 里面！

看一下我们的实物连接图！

下面是主要的代码！因为现在对于我的TFT 3.2寸没有合适的转接板，所以需要我们一条条连连起来，除非需要自己画一个转接板，这样用起来就方便很多很多啊！

[C++] 纯文本查看 复制代码

#include <ITDB02_Graph16.h>

// Declare which fonts we will be using

extern uint8_t SmallFont[];

// Uncomment the next line for the ITDB02 Shield

//ITDB02 myGLCD(19,18,17,16);

// Uncomment the next line for the ITDB02 Mega Shield

ITDB02 myGLCD(38,39,40,41);

void setup()

{

randomSeed(analogRead(0));
// Setup the LCD

myGLCD.InitLCD();

myGLCD.setFont(SmallFont);

}

void loop()

{

int buf[238];

int x, x2;

int y, y2;

int r;

// Clear the screen and draw the frame

myGLCD.clrScr();

myGLCD.setColor(255, 0, 0);

myGLCD.fillRect(0, 0, 239, 13);

myGLCD.setColor(64, 64, 64);

myGLCD.fillRect(0, 306, 239, 319);

myGLCD.setColor(255, 255, 255);

myGLCD.setBackColor(255, 0, 0);

myGLCD.print("ITDB02 - 240x320 Color Display", CENTER, 1);

myGLCD.setColor(255, 128, 128);

myGLCD.setBackColor(64, 64, 64);

myGLCD.print("H.Karlsen", LEFT, 307);

myGLCD.print("(C)2010", RIGHT, 307);

myGLCD.setColor(255,255,0);

myGLCD.print("Portrait", CENTER, 307);

myGLCD.setColor(0, 0, 255);

myGLCD.drawLine(0, 14, 239, 14);

myGLCD.drawLine(0, 14, 0, 305);

myGLCD.drawLine(239, 14, 239, 305);

myGLCD.drawLine(0, 305, 239, 305);

// Draw crosshairs

myGLCD.setColor(0, 0, 255);

myGLCD.setBackColor(0, 0, 0);

myGLCD.drawLine(119, 15, 119, 304);

myGLCD.drawLine(1, 159, 238, 159);

for (int i=9; i<240; i+=10)

myGLCD.drawLine(i, 157, i, 161);

for (int i=19; i<300; i+=10)

myGLCD.drawLine(117, i, 121, i);
// Draw sin-, cos- and tan-lines

myGLCD.setColor(0,255,255);

myGLCD.print("Sin", 5, 15);

for (int i=1; i<238; i++)

{

myGLCD.drawPixel(i,159+(sin(((i1.51)3.14)/180)*100));

}
myGLCD.setColor(255,0,0);

myGLCD.print("Cos", 5, 27);

for (int i=1; i<238; i++)

{

myGLCD.drawPixel(i,159+(cos(((i1.51)3.14)/180)100));

}

myGLCD.setColor(255,255,0);

myGLCD.print("Tan", 5, 39);

for (int i=1; i<238; i++)

{

myGLCD.drawPixel(i,159+(tan(((i1.51)*3.14)/180)));

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

myGLCD.setColor(0, 0, 255);

myGLCD.setBackColor(0, 0, 0);

myGLCD.drawLine(119, 15, 119, 304);

myGLCD.drawLine(1, 159, 238, 159);

// Draw a moving sinewave

x=1;

for (int i=1; i<6902; i++)

{

x++;

if (x==239)

x=1;

if (i>239)

{

if ((x==119)||(buf[x-1]==159))

myGLCD.setColor(0,0,255);

else

myGLCD.setColor(0,0,0);

myGLCD.drawPixel(x,buf[x-1]);

}

myGLCD.setColor(0,255,255);

y=159+(sin(((i1.4)3.14)/180)*(100-(i / 100)));

myGLCD.drawPixel(x,y);

buf[x-1]=y;

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some filled rectangles

for (int i=1; i<6; i++)

{

switch (i)

{

case 1:

myGLCD.setColor(255,0,255);

break;

case 2:

myGLCD.setColor(255,0,0);

break;

case 3:

myGLCD.setColor(0,255,0);

break;

case 4:

myGLCD.setColor(0,0,255);

break;

case 5:

myGLCD.setColor(255,255,0);

break;

}

myGLCD.fillRect(30+(i20), 70+(i20), 90+(i20), 130+(i20));

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some filled, rounded rectangles

for (int i=1; i<6; i++)

{

switch (i)

{

case 1:

myGLCD.setColor(255,0,255);

break;

case 2:

myGLCD.setColor(255,0,0);

break;

case 3:

myGLCD.setColor(0,255,0);

break;

case 4:

myGLCD.setColor(0,0,255);

break;

case 5:

myGLCD.setColor(255,255,0);

break;

}

myGLCD.fillRoundRect(150-(i20),70+(i20), 210-(i20), 130+(i20));

}
delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some filled circles

for (int i=1; i<6; i++)

{

switch (i)

{

case 1:

myGLCD.setColor(255,0,255);

break;

case 2:

myGLCD.setColor(255,0,0);

break;

case 3:

myGLCD.setColor(0,255,0);

break;

case 4:

myGLCD.setColor(0,0,255);

break;

case 5:

myGLCD.setColor(255,255,0);

break;

}

myGLCD.fillCircle(60+(i20),100+(i20), 30);

}
delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some lines in a pattern

myGLCD.setColor (255,0,0);

for (int i=15; i<304; i+=5)

{

myGLCD.drawLine(1, i, (i/1.22)-10, 304);

}

myGLCD.setColor (255,0,0);

for (int i=304; i>15; i-=5)

{

myGLCD.drawLine(238, i, (i/1.22)-11, 15);

}

myGLCD.setColor (0,255,255);

for (int i=304; i>15; i-=5)

{

myGLCD.drawLine(1, i, 251-(i/1.22), 15);

}

myGLCD.setColor (0,255,255);

for (int i=15; i<304; i+=5)

{

myGLCD.drawLine(238, i, 250-(i/1.22), 304);

}
delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some random circles

for (int i=0; i<100; i++)

{

myGLCD.setColor(random(255), random(255), random(255));

x=32+random(175);

y=45+random(212);

r=random(30);

myGLCD.drawCircle(x, y, r);

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some random rectangles

for (int i=0; i<100; i++)

{

myGLCD.setColor(random(255), random(255), random(255));

x=2+random(236);

y=16+random(287);

x2=2+random(236);

y2=16+random(287);

myGLCD.drawRect(x, y, x2, y2);

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

// Draw some random rounded rectangles

for (int i=0; i<100; i++)

{

myGLCD.setColor(random(255), random(255), random(255));

x=2+random(236);

y=16+random(287);

x2=2+random(236);

y2=16+random(287);

myGLCD.drawRoundRect(x, y, x2, y2);

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(2,16,238,304);

for (int i=0; i<100; i++)

{

myGLCD.setColor(random(255), random(255), random(255));

x=2+random(236);

y=16+random(289);

x2=2+random(236);

y2=16+random(289);

myGLCD.drawLine(x, y, x2, y2);

}

delay(2000);
myGLCD.setColor(0,0,0);

myGLCD.fillRect(1,15,238,304);

for (int i=0; i<10000; i++)

{

myGLCD.setColor(random(255), random(255), random(255));

myGLCD.drawPixel(2+random(236), 16+random(289));

}

delay(2000);

myGLCD.fillScr(0, 0, 255);

myGLCD.setColor(255, 0, 0);

myGLCD.fillRoundRect(30, 100, 209, 219);
myGLCD.setColor(255, 255, 255);

myGLCD.setBackColor(255, 0, 0);

myGLCD.print("That's it!", CENTER, 133);

myGLCD.print("Restarting in a", CENTER, 159);

myGLCD.print("few seconds...", CENTER, 172);
myGLCD.setColor(0, 0, 0);

myGLCD.setBackColor(0, 0, 255);

myGLCD.print("Runtime: (msecs)", CENTER, 290);

myGLCD.printNumI(millis(), CENTER, 305);
delay (10000);

}

所用到的库文件！

geeetech.com.zip
网盘下载 geeetech.com.zip http://pan.baidu.com/s/1dExdYV3

via - arduino中文社区

arduino学习笔记-Mega 2560+TFT3.2寸屏的演示实验

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