mega2560 USB第二季KEYBOARD HID

作者：邓帅哥——大人

不要崇拜哥，哥为人民服务，哥已不在社区，但社区的每一个角落都流传着哥的传说。

Now，镜头转入正题,mega2560 USB第二季KEYBOARD HID

首先，你必须有一片arduino主板，而且主板上必须有一片atmega8U2/atmega16U2/支持usb的芯片+mega主芯片（mega328,128,1280,2560.......），操作前请导入附件的USB库

step1:

将下列arduino代码通过arduion下载到arduino板子上，它的功能是，当你按键NumLock三次的时候，它会模拟按键输入一排信息，改变Keyboard.print内的操作即可以改变你想要的按键。ARDUINO 代码复制打印

/* Arduino USB Business Card 1. Upload this program to Arduino 2. Upgrade atmega8u2 with firmware/Arduino-keyboard-0.3.hex3. Re-plug Arduino to usb port, and pressed Num Lock button 3 times in 2 seconds Arduino will type your contact text information into the text editor/#include <USBKeyboard.h>const uint8_t KEYBOARD_LED = LED_NUMLOCK; // Num Lock LEDconst int ledPin =13;       uint8_t lastState = 0, currentState = 0;void setup() {pinMode(ledPin, OUTPUT);Keyboard.init();}// return true if KEYBOARD_LED (Num Lock button) is pressedboolean buttonPressed(){uint8_t ledStatus;ledStatus = Keyboard.readLedStatus();// Arduino Led pin as an indicator  // If Num Lock led is on, the led indicator will be onif (ledStatus & KEYBOARD_LED) {  digitalWrite(ledPin, HIGH);  } else {  digitalWrite(ledPin, LOW);}  lastState = currentState;currentState = ledStatus & KEYBOARD_LED;return (currentState != lastState); }void sendContactInfo(){Keyboard.print("dengshuaige");Keyboard.sendKeyStroke(KEY_ENTER);Keyboard.print("Email: [email]mkandy44@gmail.com[/email]");Keyboard.sendKeyStroke(KEY_ENTER);Keyboard.print("dengshuaige.com");Keyboard.sendKeyStroke(KEY_ENTER);}void loop() {int counter;delay(100);// Check whether KEYBOARD_LED is pressed 3 times in 2 secondsif (buttonPressed()) {  counter = 1;  for (int i = 0; i < 20; i++) {  delay(100);  if (buttonPressed()) counter = counter + 1;    // Send my information to computer  if (counter >= 3) {  sendContactInfo();  break;  }  }    counter = 0;      // reset counter}}
/ Arduino USB Business Card 


    

  1. Upload this program to Arduino 
    2. 

  2. Upgrade atmega8u2 with firmware/Arduino-keyboard-0.3.hex
    3. 

  3. Re-plug Arduino to usb port, and pressed Num Lock button 3 times in 2 seconds

    
Arduino will type your contact text information into the text editor

    
*/

    
#include <USBKeyboard.h>

    


    
const uint8_t KEYBOARD_LED = LED_NUMLOCK; // Num Lock LED

    
const int ledPin =13;       

    
uint8_t lastState = 0, currentState = 0;

    


    
void setup() 

    
{

    
pinMode(ledPin, OUTPUT);

    
Keyboard.init();

    
}

    


    
// return true if KEYBOARD_LED (Num Lock button) is pressed

    
boolean buttonPressed()

    
{

    
uint8_t ledStatus;

    


    
ledStatus = Keyboard.readLedStatus();

    


    
// Arduino Led pin as an indicator  

    
// If Num Lock led is on, the led indicator will be on

    
if (ledStatus & KEYBOARD_LED) {

    
digitalWrite(ledPin, HIGH);  

    
} else {

    
digitalWrite(ledPin, LOW);

    
}  

    


    
lastState = currentState;

    
currentState = ledStatus & KEYBOARD_LED;

    


    
return (currentState != lastState); 

    
}

    


    
void sendContactInfo()

    
{

    
Keyboard.print("dengshuaige");

    
Keyboard.sendKeyStroke(KEY_ENTER);

    
Keyboard.print("Email: [email]mkandy44@gmail.com[/email]");

    
Keyboard.sendKeyStroke(KEY_ENTER);

    
Keyboard.print("dengshuaige.com");

    
Keyboard.sendKeyStroke(KEY_ENTER);

    
}

    


    
void loop() 

    
{

    
int counter;

    


    
delay(100);

    


    
// Check whether KEYBOARD_LED is pressed 3 times in 2 seconds

    
if (buttonPressed()) {

    
counter = 1;

    
for (int i = 0; i < 20; i++) {

    
delay(100);

    
if (buttonPressed()) counter = counter + 1;  

    


    
// Send my information to computer

    
if (counter >= 3) {

    
sendContactInfo();

    
break;

    
}

    
}  

    
counter = 0;      // reset counter

    
}

    
}
    4.
下载到mega2560后，板子还是不能工作的，请继续往下看，
step2:将Arduino-keyboard-0.3-mega2560.hex通过烧录器烧到mega8U2上面

未命名.jpg

2012-6-14 09:38 上传
(23.93 KB)





哥用的是USBasp,淘宝15——20元一个。

aspflash.jpg

2012-6-14 09:41 上传
(130.85 KB)



OK,将mega8u2烧好之后，

连接arduino的USB线，你可以看见在键盘下方多了一个HID keyboard device(不需要安装任何驱动)，哈哈，这时，你可以用你自已做的键盘了。

HIDKeyboard.jpg

2012-6-14 09:50 上传
(36.83 KB)





测试一下，新建一个文本，打开，光标输入到文本，按三次NumLock键，得到如下：

test.jpg

2012-6-14 09:52 上传
(20.47 KB)




libraries.rar

(335.03 KB, 下载次数: 184)

2012-8-31 21:34 上传
点击文件名下载附件

Arduino-keyboard-0.3-mega2560.rar

(4.23 KB, 下载次数: 139)

2012-8-31 21:34 上传
点击文件名下载附件



USB第三季预告（AVR篇）用mega8单独打造USB键盘...掌声~~~~
via - 极客工坊

标签: Arduino教程