71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/*
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* joystick utility functions
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <linux/joystick.h>
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#include "joyutils.h"
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/* ----------------------------------------------------------------- */
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static char *type2txt(unsigned char type)
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{
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static char temp[100];
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if (!(type & JS_EVENT_INIT)) {
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switch(type) {
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case JS_EVENT_BUTTON: return "button";
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case JS_EVENT_AXIS: return "axis";
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}
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}
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else {
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sprintf(temp, "init %d", type & 0x7f);
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return temp;
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}
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return "???";
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}
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void dump_my_joystick(char *joy_device)
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{
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int joy_fd, foo;
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struct js_event js;
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int flag = 0;
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unsigned long debut;
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char joy_name[128];
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if( ( joy_fd = open(joy_device , O_RDONLY)) == -1 ) {
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fprintf(stderr, "%s: couldn't open %s\n", __func__, joy_device);
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exit(1);
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}
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if (ioctl(joy_fd, JSIOCGNAME(sizeof(joy_name)), joy_name) < 0)
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strncpy(joy_name, "Unknown", sizeof(joy_name));
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fprintf(stderr, "Name: \"%s\"\n", joy_name);
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for (;;) {
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foo = read(joy_fd, &js, sizeof(struct js_event));
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if ( ! flag ) {
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debut = js.time;
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flag = 1;
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}
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if (8 != foo) {
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fprintf(stderr, "%s: err reading joy\n", __func__);
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exit(1);
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}
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printf("%8lu %4d / %-8s %2d %7d\n",
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js.time-debut,
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js.type, type2txt(js.type),
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js.number, js.value);
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}
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}
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/* ----------------------------------------------------------------- */
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/* ----------------------------------------------------------------- */
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