Keyboard.print()相当于Teensy上的C?

时间:2015-10-20 22:03:38

标签: c arduino teensy

我试图为Teensy编写一个用它作为键盘的程序。我希望它根据输入打印出某些字符串,但有些字符串相当长。我知道对于Arduino IDE,有一个简单的Keyboard.print()函数允许发送字符串。此功能是否也适用于C?

1 个答案:

答案 0 :(得分:0)

你的问题还不清楚,所以我已经回答了我从中得到的两种解释。

如果您指的是使用Teensy作为输入设备。

是的,如果您在所选操作系统下使用teensyduino,则所有Teensy设备都应该可以使用。只需输入您的代码并设置Teensy as a HID device即可使用它 为了重申好的建议,小心测试作为流氓键盘会很快给你带来很多麻烦。

如果您指的是使用C程序来模拟键盘。

是的,这也是可能的。

Linux说明

Example Code - Found on SO
该示例使用#define KEYCODE XK_Down,这是“安全的”,但很难显示。尝试在适当的位置添加#define KEYCODE XK_A#include <unistd.h>usleep(2000000); // 2 seconds来控制行为 此外,如果您需要C而不是C ++,请在Window &win

中将Window win更改为createKeyEvent

XFakeKey.c下面的修改代码

// Send a fake keystroke event to an X window.
// by Adam Pierce - http://www.doctort.org/adam/
// This is public domain software. It is free to use by anyone for any purpose.

// debug message, delay, and conversion to C by ti7
// original code found at http://www.doctort.org/adam/nerd-notes/x11-fake-keypress-event.html

#include <X11/Xlib.h>
#include <X11/keysym.h>

// The key code to be sent.
// A full list of available codes can be found in /usr/include/X11/keysymdef.h
//#define KEYCODE XK_Down
#define KEYCODE XK_A

// Function to create a keyboard event
XKeyEvent createKeyEvent(Display *display, Window win,
                           Window winRoot, int press,
                           int keycode, int modifiers)
{
   XKeyEvent event;

   event.display     = display;
   event.window      = win;
   event.root        = winRoot;
   event.subwindow   = None;
   event.time        = CurrentTime;
   event.x           = 1;
   event.y           = 1;
   event.x_root      = 1;
   event.y_root      = 1;
   event.same_screen = True;
   event.keycode     = XKeysymToKeycode(display, keycode);
   event.state       = modifiers;

   if(press)
      event.type = KeyPress;
   else
      event.type = KeyRelease;

   return event;
}

#define true 1
#define false 0

#include <stdio.h> // for printf
#include <unistd.h> // for time
main()
{
// Obtain the X11 display.
   Display *display = XOpenDisplay(0);
   if(display == NULL)
      return -1;
    printf("it's working\n");
// Get the root window for the current display.
   Window winRoot = XDefaultRootWindow(display);

    usleep(1000000);
// Find the window which has the current keyboard focus.
   Window winFocus;
   int    revert;
   XGetInputFocus(display, &winFocus, &revert);

// Send a fake key press event to the window.
   XKeyEvent event = createKeyEvent(display, winFocus, winRoot, true, KEYCODE, 0);
   XSendEvent(event.display, event.window, True, KeyPressMask, (XEvent *)&event);

// Send a fake key release event to the window.
   event = createKeyEvent(display, winFocus, winRoot, false, KEYCODE, 0);
   XSendEvent(event.display, event.window, True, KeyPressMask, (XEvent *)&event);

// Done.
   XCloseDisplay(display);
   return 0;
}

使用gcc -o XFakeKey XFakeKey.c -L/usr/X11R6/lib -lX11

进行编译

Windows示例

Example Code
我感觉很勇敢,没有测试过,所以坚持穿裤子。