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(((i
1.51)*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



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标签: Arduino教程