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TTT.cpp
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TTT.cpp
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#include <signal.h>
#include <termios.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#define KEYCODE_R 0x43
#define KEYCODE_L 0x44
#define KEYCODE_U 0x41
#define KEYCODE_D 0x42
#define KEYCODE_Q 0x71
int kfd = 0;
struct termios cooked, raw;
void quit(int sig)
{
(void)sig;
tcsetattr(kfd, TCSANOW, &cooked);//在程序结束时在恢复原来的配置
exit(0);
}
void keyLoop()
{
char c;
// get the console in raw mode
tcgetattr(kfd, &cooked); // 得到 termios 结构体保存,然后重新配置终端
memcpy(&raw, &cooked, sizeof(struct termios));
raw.c_lflag &=~ (ICANON | ECHO);
// Setting a new line, then end of file
raw.c_cc[VEOL] = 1;
raw.c_cc[VEOF] = 2;
tcsetattr(kfd, TCSANOW, &raw);
puts("Reading from keyboard");
puts("---------------------------");
puts("Use arrow keys to move the robot.");
puts("otherwise the key values will be printed");
for(;;)
{
// get the next event from the keyboard
if(read(kfd, &c, 1) < 0)
{
perror("read():");
exit(-1);
}
switch(c)
{
case KEYCODE_L:
printf("LEFT\n");
break;
case KEYCODE_R:
printf("RIGHT\n");
break;
case KEYCODE_U:
printf("UP\n");
break;
case KEYCODE_D:
printf("DOWN\n");
break;
default:
printf("value: %c = 0x%02X = %d\n", c, c, c);
}
}
return;
}
int main(int argc, char** argv)
{
// signal(SIGINT,quit);
keyLoop();
return(0);
}