2008-04-14 20:49:54 -06:00
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/*
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* jstest.c Version 1.2
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*
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* Copyright (c) 1996-1999 Vojtech Pavlik
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*
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* Sponsored by SuSE
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*/
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/*
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* This program can be used to test all the features of the Linux
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* joystick API, including non-blocking and select() access, as
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* well as version 0.x compatibility mode. It is also intended to
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* serve as an example implementation for those who wish to learn
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* how to write their own joystick using applications.
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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2008-04-29 01:01:35 -06:00
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#include <unistd.h>
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2008-04-14 20:49:54 -06:00
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <linux/input.h>
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#include <linux/joystick.h>
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char *axis_names[ABS_MAX + 1] = {
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"X", "Y", "Z", "Rx", "Ry", "Rz", "Throttle", "Rudder",
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"Wheel", "Gas", "Brake", "?", "?", "?", "?", "?",
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"Hat0X", "Hat0Y", "Hat1X", "Hat1Y", "Hat2X", "Hat2Y", "Hat3X", "Hat3Y",
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"?", "?", "?", "?", "?", "?", "?",
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};
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char *button_names[KEY_MAX - BTN_MISC + 1] = {
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"Btn0", "Btn1", "Btn2", "Btn3", "Btn4", "Btn5", "Btn6", "Btn7", "Btn8", "Btn9", "?", "?", "?", "?", "?", "?",
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"LeftBtn", "RightBtn", "MiddleBtn", "SideBtn", "ExtraBtn", "ForwardBtn", "BackBtn", "TaskBtn", "?", "?", "?", "?", "?", "?", "?", "?",
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"Trigger", "ThumbBtn", "ThumbBtn2", "TopBtn", "TopBtn2", "PinkieBtn", "BaseBtn", "BaseBtn2", "BaseBtn3", "BaseBtn4", "BaseBtn5", "BaseBtn6", "BtnDead",
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"BtnA", "BtnB", "BtnC", "BtnX", "BtnY", "BtnZ", "BtnTL", "BtnTR", "BtnTL2", "BtnTR2", "BtnSelect", "BtnStart", "BtnMode", "BtnThumbL", "BtnThumbR", "?",
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"?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?",
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"WheelBtn", "Gear up",
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};
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#define NAME_LENGTH 128
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int main (int argc, char **argv)
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{
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int fd, i;
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unsigned char axes = 2;
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unsigned char buttons = 2;
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int version = 0x000800;
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char name[NAME_LENGTH] = "Unknown";
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uint16_t btnmap[KEY_MAX - BTN_MISC + 1];
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uint8_t axmap[ABS_MAX + 1];
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if (argc < 2 || argc > 3 || !strcmp("--help", argv[1])) {
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puts("");
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puts("Usage: jstest [<mode>] <device>");
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puts("");
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puts("Modes:");
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puts(" --normal One-line mode showing immediate status");
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puts(" --old Same as --normal, using 0.x interface");
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puts(" --event Prints events as they come in");
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puts(" --nonblock Same as --event, in nonblocking mode");
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puts(" --select Same as --event, using select() call");
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puts("");
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return 1;
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}
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if ((fd = open(argv[argc - 1], O_RDONLY)) < 0) {
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perror("jstest");
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return 1;
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}
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ioctl(fd, JSIOCGVERSION, &version);
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ioctl(fd, JSIOCGAXES, &axes);
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ioctl(fd, JSIOCGBUTTONS, &buttons);
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ioctl(fd, JSIOCGNAME(NAME_LENGTH), name);
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ioctl(fd, JSIOCGAXMAP, axmap);
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ioctl(fd, JSIOCGBTNMAP, btnmap);
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printf("Driver version is %d.%d.%d.\n",
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version >> 16, (version >> 8) & 0xff, version & 0xff);
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if (buttons > 0 && btnmap[0] < BTN_MISC) {
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/* btnmap out of range for names. Don't print any. */
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printf("Joystick (%s) has %d axes ", name, axes);
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printf("and %d buttons.\n", buttons);
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} else {
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printf("Joystick (%s) has %d axes (", name, axes);
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for (i = 0; i < axes; i++)
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printf("%s%s", i > 0 ? ", " : "", axis_names[axmap[i]]);
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puts(")");
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printf("and %d buttons (", buttons);
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for (i = 0; i < buttons; i++)
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printf("%s%s", i > 0 ? ", " : "", button_names[btnmap[i] - BTN_MISC]);
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puts(").");
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}
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printf("Testing ... (interrupt to exit)\n");
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/*
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* Old (0.x) interface.
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*/
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if ((argc == 2 && version < 0x010000) || !strcmp("--old", argv[1])) {
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struct JS_DATA_TYPE js;
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while (1) {
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if (read(fd, &js, JS_RETURN) != JS_RETURN) {
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perror("\njstest: error reading");
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return 1;
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}
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printf("Axes: X:%3d Y:%3d Buttons: A:%s B:%s\r",
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js.x, js.y, (js.buttons & 1) ? "on " : "off", (js.buttons & 2) ? "on " : "off");
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fflush(stdout);
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usleep(10000);
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}
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}
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/*
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* Event interface, single line readout.
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*/
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if (argc == 2 || !strcmp("--normal", argv[1])) {
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int *axis;
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char *button;
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int i;
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struct js_event js;
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axis = calloc(axes, sizeof(int));
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button = calloc(buttons, sizeof(char));
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while (1) {
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if (read(fd, &js, sizeof(struct js_event)) != sizeof(struct js_event)) {
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perror("\njstest: error reading");
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return 1;
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}
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switch(js.type & ~JS_EVENT_INIT) {
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case JS_EVENT_BUTTON:
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button[js.number] = js.value;
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break;
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case JS_EVENT_AXIS:
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axis[js.number] = js.value;
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break;
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}
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printf("\r");
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if (axes) {
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printf("Axes: ");
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for (i = 0; i < axes; i++)
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printf("%2d:%6d ", i, axis[i]);
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}
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if (buttons) {
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printf("Buttons: ");
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for (i = 0; i < buttons; i++)
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printf("%2d:%s ", i, button[i] ? "on " : "off");
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}
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fflush(stdout);
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}
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}
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/*
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* Event interface, events being printed.
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*/
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if (!strcmp("--event", argv[1])) {
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struct js_event js;
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while (1) {
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if (read(fd, &js, sizeof(struct js_event)) != sizeof(struct js_event)) {
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perror("\njstest: error reading");
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return 1;
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}
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printf("Event: type %d, time %d, number %d, value %d\n",
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js.type, js.time, js.number, js.value);
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fflush(stdout);
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}
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}
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/*
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* Reading in nonblocking mode.
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*/
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if (!strcmp("--nonblock", argv[1])) {
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struct js_event js;
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fcntl(fd, F_SETFL, O_NONBLOCK);
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while (1) {
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while (read(fd, &js, sizeof(struct js_event)) == sizeof(struct js_event)) {
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printf("Event: type %d, time %d, number %d, value %d\n",
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js.type, js.time, js.number, js.value);
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}
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if (errno != EAGAIN) {
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perror("\njstest: error reading");
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return 1;
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}
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usleep(10000);
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}
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}
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/*
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* Using select() on joystick fd.
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*/
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if (!strcmp("--select", argv[1])) {
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struct js_event js;
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struct timeval tv;
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fd_set set;
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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while (1) {
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FD_ZERO(&set);
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FD_SET(fd, &set);
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if (select(fd+1, &set, NULL, NULL, &tv)) {
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if (read(fd, &js, sizeof(struct js_event)) != sizeof(struct js_event)) {
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perror("\njstest: error reading");
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return 1;
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}
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printf("Event: type %d, time %d, number %d, value %d\n",
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js.type, js.time, js.number, js.value);
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}
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}
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}
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printf("jstest: unknown mode: %s\n", argv[1]);
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return -1;
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}
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