Revision 8ecb9700
ID | 8ecb9700093a50b1fd55a99eeb5c63252cd3804a |
Added a keyboard control node.
The new file, keyboard_control.cpp, mimics the turtlesim keyboard reading. It responds to wasd, arrow keys, and "rf" (for up/down), and right now simply outputs ROS_INFO to show what was pressed.
mikrokopter/CMakeLists.txt | ||
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27 | 27 |
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28 | 28 |
rosbuild_add_executable(externctrl_client src/externctrl_client.cpp) |
29 | 29 |
rosbuild_add_executable(wasd_nav src/wasd_nav.cpp src/nav_lib.cpp) |
30 |
rosbuild_add_executable(keyboard_control src/keyboard_control.cpp src/nav_lib.cpp) |
mikrokopter/src/keyboard_control.cpp | ||
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/** |
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* @brief A node responsible for keyboard commands which will be sent to |
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* the MikroKopter |
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* |
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* @author CMU Quadrotor Project |
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* @author Alex Zirbel |
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*/ |
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#include <ros/ros.h> |
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#include <signal.h> |
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#include <termios.h> |
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#include <stdio.h> |
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#define KEYCODE_R 0x43 |
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#define KEYCODE_L 0x44 |
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#define KEYCODE_U 0x41 |
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#define KEYCODE_D 0x42 |
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#define KEYCODE_Q 0x71 |
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// Keyboard control variables |
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int kfd = 0; |
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struct termios cooked, raw; |
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class KeyboardControl |
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{ |
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public: |
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KeyboardControl(); |
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void keyLoop(); |
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private: |
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ros::NodeHandle n; |
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}; |
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KeyboardControl::KeyboardControl() |
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{ |
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} |
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void quit(int sig) |
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{ |
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tcsetattr(kfd, TCSANOW, &cooked); |
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ros::shutdown(); |
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exit(0); |
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} |
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void KeyboardControl::keyLoop() |
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{ |
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char c; |
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bool dirty=false; |
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// get the console in raw mode |
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tcgetattr(kfd, &cooked); |
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memcpy(&raw, &cooked, sizeof(struct termios)); |
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raw.c_lflag &=~ (ICANON | ECHO); |
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// Setting a new line, then end of file |
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raw.c_cc[VEOL] = 1; |
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raw.c_cc[VEOF] = 2; |
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tcsetattr(kfd, TCSANOW, &raw); |
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puts("Reading from keyboard"); |
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puts("---------------------------"); |
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puts("Use arrow keys to command the quadrotor."); |
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while(true) |
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{ |
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// get the next event from the keyboard |
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if(read(kfd, &c, 1) < 0) |
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{ |
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perror("read():"); |
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exit(-1); |
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} |
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//ROS_INFO("key press: 0x%02X\n", c); |
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//ROS_INFO("key press: %c\n", c); |
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switch(c) |
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{ |
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case KEYCODE_L: |
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case 'a': |
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ROS_INFO("W"); |
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dirty = true; |
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break; |
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case KEYCODE_R: |
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case 'd': |
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ROS_INFO("E"); |
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dirty = true; |
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break; |
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case KEYCODE_U: |
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case 'w': |
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ROS_INFO("N"); |
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dirty = true; |
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break; |
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case KEYCODE_D: |
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case 's': |
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ROS_INFO("S"); |
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dirty = true; |
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break; |
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case 'r': |
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ROS_INFO("UP"); |
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break; |
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case 'f': |
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ROS_INFO("DOWN"); |
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break; |
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} |
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if(dirty) |
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{ |
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dirty=false; |
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} |
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} |
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return; |
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} |
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int main(int argc, char** argv) |
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{ |
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ros::init(argc, argv, "keyboard_control"); |
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KeyboardControl teleop_turtle; |
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signal(SIGINT,quit); |
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// This commands loops infinitely |
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teleop_turtle.keyLoop(); |
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return(0); |
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} |
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