minix/test/scancodes/test-scancodes.c

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2010-04-15 08:55:32 +02:00
#define _MINIX
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
/* list of scancodes to demonstrate whether the keycodes are correct;
* source: http://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html
*/
static char *keydescr[] = {
NULL, /* 0x00 */
"Esc", /* 0x01 */
"1!", /* 0x02 */
"2@", /* 0x03 */
"3#", /* 0x04 */
"4$", /* 0x05 */
"5%", /* 0x06 */
"6^", /* 0x07 */
"7&", /* 0x08 */
"8*", /* 0x09 */
"9(", /* 0x0a */
"0)", /* 0x0b */
"-_", /* 0x0c */
"=+", /* 0x0d */
"Backspace", /* 0x0e */
"Tab", /* 0x0f */
"Q", /* 0x10 */
"W", /* 0x11 */
"E", /* 0x12 */
"R", /* 0x13 */
"T", /* 0x14 */
"Y", /* 0x15 */
"U", /* 0x16 */
"I", /* 0x17 */
"O", /* 0x18 */
"P", /* 0x19 */
"[{", /* 0x1a */
"]}", /* 0x1b */
"Enter", /* 0x1c */
"LCtrl", /* 0x1d */
"A", /* 0x1e */
"S", /* 0x1f */
"D", /* 0x20 */
"F", /* 0x21 */
"G", /* 0x22 */
"H", /* 0x23 */
"J", /* 0x24 */
"K", /* 0x25 */
"L", /* 0x26 */
";:", /* 0x27 */
"'\"", /* 0x28 */
"`~", /* 0x29 */
"LShift", /* 0x2a */
"\\|", /* 0x2b */
"Z", /* 0x2c */
"X", /* 0x2d */
"C", /* 0x2e */
"V", /* 0x2f */
"B", /* 0x30 */
"N", /* 0x31 */
"M", /* 0x32 */
",<", /* 0x33 */
".>", /* 0x34 */
"/?", /* 0x35 */
"RShift", /* 0x36 */
"Keypad-*", /* 0x37 */
"LAlt", /* 0x38 */
"Space bar", /* 0x39 */
"CapsLock", /* 0x3a */
"F1", /* 0x3b */
"F2", /* 0x3c */
"F3", /* 0x3d */
"F4", /* 0x3e */
"F5", /* 0x3f */
"F6", /* 0x40 */
"F7", /* 0x41 */
"F8", /* 0x42 */
"F9", /* 0x43 */
"F10", /* 0x44 */
"NumLock", /* 0x45 */
"ScrollLock", /* 0x46 */
"Keypad-7/Home",/* 0x47 */
"Keypad-8/Up", /* 0x48 */
"Keypad-9/PgUp",/* 0x49 */
"Keypad--", /* 0x4a */
"Keypad-4/Left",/* 0x4b */
"Keypad-5", /* 0x4c */
"Keypad-6/Right",/* 0x4d */
"Keypad-+", /* 0x4e */
"Keypad-1/End", /* 0x4f */
"Keypad-2/Down",/* 0x50 */
"Keypad-3/PgDn",/* 0x51 */
"Keypad-0/Ins", /* 0x52 */
"Keypad-./Del", /* 0x53 */
"Alt-SysRq", /* 0x54 */
NULL, /* 0x55 */
NULL, /* 0x56 */
"F11", /* 0x57 */
"F12", /* 0x58 */
NULL, /* 0x59 */
NULL, /* 0x5a */
NULL, /* 0x5b */
NULL, /* 0x5c */
NULL, /* 0x5d */
NULL, /* 0x5e */
NULL, /* 0x5f */
NULL, /* 0x60 */
NULL, /* 0x61 */
NULL, /* 0x62 */
NULL, /* 0x63 */
NULL, /* 0x64 */
NULL, /* 0x65 */
NULL, /* 0x66 */
NULL, /* 0x67 */
NULL, /* 0x68 */
NULL, /* 0x69 */
NULL, /* 0x6a */
NULL, /* 0x6b */
NULL, /* 0x6c */
NULL, /* 0x6d */
NULL, /* 0x6e */
NULL, /* 0x6f */
NULL, /* 0x70 */
NULL, /* 0x71 */
NULL, /* 0x72 */
NULL, /* 0x73 */
NULL, /* 0x74 */
NULL, /* 0x75 */
NULL, /* 0x76 */
NULL, /* 0x77 */
NULL, /* 0x78 */
NULL, /* 0x79 */
NULL, /* 0x7a */
NULL, /* 0x7b */
NULL, /* 0x7c */
NULL, /* 0x7d */
NULL, /* 0x7e */
NULL, /* 0x7f */
};
static char *keydescresc[] = {
NULL, /* 0xe0 0x00 */
NULL, /* 0xe0 0x01 */
NULL, /* 0xe0 0x02 */
NULL, /* 0xe0 0x03 */
NULL, /* 0xe0 0x04 */
NULL, /* 0xe0 0x05 */
NULL, /* 0xe0 0x06 */
NULL, /* 0xe0 0x07 */
NULL, /* 0xe0 0x08 */
NULL, /* 0xe0 0x09 */
NULL, /* 0xe0 0x0a */
NULL, /* 0xe0 0x0b */
NULL, /* 0xe0 0x0c */
NULL, /* 0xe0 0x0d */
NULL, /* 0xe0 0x0e */
NULL, /* 0xe0 0x0f */
NULL, /* 0xe0 0x10 */
NULL, /* 0xe0 0x11 */
NULL, /* 0xe0 0x12 */
NULL, /* 0xe0 0x13 */
NULL, /* 0xe0 0x14 */
NULL, /* 0xe0 0x15 */
NULL, /* 0xe0 0x16 */
NULL, /* 0xe0 0x17 */
NULL, /* 0xe0 0x18 */
NULL, /* 0xe0 0x19 */
NULL, /* 0xe0 0x1a */
NULL, /* 0xe0 0x1b */
"Keypad Enter", /* 0xe0 0x1c */
"RCtrl", /* 0xe0 0x1d */
NULL, /* 0xe0 0x1e */
NULL, /* 0xe0 0x1f */
NULL, /* 0xe0 0x20 */
NULL, /* 0xe0 0x21 */
NULL, /* 0xe0 0x22 */
NULL, /* 0xe0 0x23 */
NULL, /* 0xe0 0x24 */
NULL, /* 0xe0 0x25 */
NULL, /* 0xe0 0x26 */
NULL, /* 0xe0 0x27 */
NULL, /* 0xe0 0x28 */
NULL, /* 0xe0 0x29 */
"fake LShift", /* 0xe0 0x2a */
NULL, /* 0xe0 0x2b */
NULL, /* 0xe0 0x2c */
NULL, /* 0xe0 0x2d */
NULL, /* 0xe0 0x2e */
NULL, /* 0xe0 0x2f */
NULL, /* 0xe0 0x30 */
NULL, /* 0xe0 0x31 */
NULL, /* 0xe0 0x32 */
NULL, /* 0xe0 0x33 */
NULL, /* 0xe0 0x34 */
"Keypad-/", /* 0xe0 0x35 */
"fake RShift", /* 0xe0 0x36 */
"Ctrl-PrtScn", /* 0xe0 0x37 */
"RAlt", /* 0xe0 0x38 */
NULL, /* 0xe0 0x39 */
NULL, /* 0xe0 0x3a */
NULL, /* 0xe0 0x3b */
NULL, /* 0xe0 0x3c */
NULL, /* 0xe0 0x3d */
NULL, /* 0xe0 0x3e */
NULL, /* 0xe0 0x3f */
NULL, /* 0xe0 0x40 */
NULL, /* 0xe0 0x41 */
NULL, /* 0xe0 0x42 */
NULL, /* 0xe0 0x43 */
NULL, /* 0xe0 0x44 */
NULL, /* 0xe0 0x45 */
"Ctrl-Break", /* 0xe0 0x46 */
"Grey Home", /* 0xe0 0x47 */
"Grey Up", /* 0xe0 0x48 */
"Grey PgUp", /* 0xe0 0x49 */
NULL, /* 0xe0 0x4a */
"Grey Left", /* 0xe0 0x4b */
NULL, /* 0xe0 0x4c */
"Grey Right", /* 0xe0 0x4d */
NULL, /* 0xe0 0x4e */
"Grey End", /* 0xe0 0x4f */
"Grey Down", /* 0xe0 0x50 */
"Grey PgDn", /* 0xe0 0x51 */
"Grey Insert", /* 0xe0 0x52 */
"Grey Delete", /* 0xe0 0x53 */
NULL, /* 0xe0 0x54 */
NULL, /* 0xe0 0x55 */
NULL, /* 0xe0 0x56 */
NULL, /* 0xe0 0x57 */
NULL, /* 0xe0 0x58 */
NULL, /* 0xe0 0x59 */
NULL, /* 0xe0 0x5a */
"LeftWindow", /* 0xe0 0x5b */
"RightWindow", /* 0xe0 0x5c */
"Menu", /* 0xe0 0x5d */
"Power", /* 0xe0 0x5e */
"Sleep", /* 0xe0 0x5f */
NULL, /* 0xe0 0x60 */
NULL, /* 0xe0 0x61 */
NULL, /* 0xe0 0x62 */
"Wake", /* 0xe0 0x63 */
NULL, /* 0xe0 0x64 */
NULL, /* 0xe0 0x65 */
NULL, /* 0xe0 0x66 */
NULL, /* 0xe0 0x67 */
NULL, /* 0xe0 0x68 */
NULL, /* 0xe0 0x69 */
NULL, /* 0xe0 0x6a */
NULL, /* 0xe0 0x6b */
NULL, /* 0xe0 0x6c */
NULL, /* 0xe0 0x6d */
NULL, /* 0xe0 0x6e */
NULL, /* 0xe0 0x6f */
NULL, /* 0xe0 0x70 */
NULL, /* 0xe0 0x71 */
NULL, /* 0xe0 0x72 */
NULL, /* 0xe0 0x73 */
NULL, /* 0xe0 0x74 */
NULL, /* 0xe0 0x75 */
NULL, /* 0xe0 0x76 */
NULL, /* 0xe0 0x77 */
NULL, /* 0xe0 0x78 */
NULL, /* 0xe0 0x79 */
NULL, /* 0xe0 0x7a */
NULL, /* 0xe0 0x7b */
NULL, /* 0xe0 0x7c */
NULL, /* 0xe0 0x7d */
NULL, /* 0xe0 0x7e */
NULL, /* 0xe0 0x7f */
};
#define CHECK(r) check((r), #r, __FILE__, __LINE__)
int check(long r, const char *expr, const char *file, int line)
{
char buffer[256];
if (r < 0) {
snprintf(buffer, sizeof(buffer), "%s:%d: %s: result %ld, %s",
file, line, expr, r, strerror(errno));
exit(-1);
}
return r;
}
#define SCODE_ESC 0xe0
#define SCODE_BREAK 0x80
static int testscancode(int fd)
{
static int escape, lctrl, rctrl;
ssize_t count;
unsigned char scode;
char *scodedescr;
/* read a scancode and test for EOF */
CHECK(count = read(fd, &scode, sizeof(scode)));
if (count < sizeof(scode)) {
return 0;
}
/* print scancode */
printf("0x%.2x ", scode);
fflush(stdout);
/* test for escape */
if (!escape && scode == SCODE_ESC) {
escape = 1;
return 1;
}
/* describe scancode */
scodedescr = (escape ? keydescresc : keydescr)[scode & ~SCODE_BREAK];
if (scodedescr)
printf("[%s] ", scodedescr);
if (scode & SCODE_BREAK)
printf("up\n");
else
printf("down\n");
fflush(stdout);
/* exit on ctrl-C */
if ((scode & ~SCODE_BREAK) == 0x1d) {
if (escape)
rctrl = !(scode & SCODE_BREAK);
else
lctrl = !(scode & SCODE_BREAK);
}
if ((lctrl || rctrl) && !escape && scode == 0x2e) {
return 0;
}
/* next key is not escaped */
escape = 0;
return 1;
}
static volatile int terminate;
static void set_terminate(int signum)
{
terminate = signum;
}
static int testscancodes(int fd)
{
struct termios termios_old, termios_scan;
/* this test only works with a TTY as stdin */
if (!CHECK(isatty(fd))) {
printf("warning: this test can only be run from a console\n");
return 0;
}
/* catch fatal signals to restore the console */
CHECK((signal(SIGHUP, set_terminate) == SIG_ERR) ? -1 : 0);
CHECK((signal(SIGINT, set_terminate) == SIG_ERR) ? -1 : 0);
CHECK((signal(SIGQUIT, set_terminate) == SIG_ERR) ? -1 : 0);
CHECK((signal(SIGABRT, set_terminate) == SIG_ERR) ? -1 : 0);
CHECK((signal(SIGPIPE, set_terminate) == SIG_ERR) ? -1 : 0);
CHECK((signal(SIGTERM, set_terminate) == SIG_ERR) ? -1 : 0);
/* configure tty in raw input mode with scancodes and no echo */
CHECK(tcgetattr(fd, &termios_old));
termios_scan = termios_old;
termios_scan.c_iflag &= ~(BRKINT | ICRNL | IGNBRK | IGNCR | IGNPAR);
termios_scan.c_iflag &= ~(INLCR | INPCK | ISTRIP);
termios_scan.c_iflag &= ~(IXOFF | IXON | PARMRK);
termios_scan.c_iflag |= SCANCODES;
termios_scan.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
termios_scan.c_lflag &= ~(ICANON | IEXTEN | ISIG | NOFLSH);
CHECK(tcsetattr(fd, TCSANOW, &termios_scan));
/* test: is scancode input supported? */
CHECK(tcgetattr(fd, &termios_scan));
if (termios_scan.c_iflag & SCANCODES) {
while (!terminate && CHECK(testscancode(fd))) ;
} else {
printf("warning: cannot enable SCANCODES "
"(are you running from a console?)\n");
}
/* report if closed by a signal */
if (terminate) {
printf("received signal %d, shutting down\n", terminate);
}
/* restore original input mode */
CHECK(tcsetattr(fd, TCSANOW, &termios_old));
/* clear buffered input */
CHECK(tcflush(fd, TCIFLUSH));
}
int main(void)
{
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printf("try out some keys to find out whether SCANCODES works\n");
printf("press CTRL+C to end this test\n");
printf("please note that this test only works from a console tty\n");
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/* perform test using stdin */
if (testscancodes(STDIN_FILENO) < 0)
return -1;
else
return 0;
}