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Handle deadzone, return event type on read_event

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Thibaud Gasser 2018-05-23 14:42:09 +02:00
parent 1a2e82040d
commit 1902bdaf7a
4 changed files with 45 additions and 16 deletions
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4
Makefile
View File

@ -2,8 +2,8 @@ TARGET = spnav
TARGET_LIB = libspnavhdi.so # target lib
CC = gcc
CFLAGS = -Wall -Wextra -fPIC -pedantic -O2 # C flags for building library
#CFLAGS = -Wall -Wextra -pedantic -g # C flags for developpement
#CFLAGS = -Wall -Wextra -fPIC -pedantic -O2 # C flags for building library
CFLAGS = -Wall -Wextra -pedantic -g # C flags for developpement
LDFLAGS = -Wall -Wextra -O2

3
main.c
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@ -148,7 +148,7 @@ int main(int argc, char const *argv[])
spnav_event ev;
spnav_open();
for (;;) {
spnav_wait_event(&ev);
spnav_wait_event_timeout(&ev, 400);
switch (ev.type) {
case MOTION:
@ -156,6 +156,7 @@ int main(int argc, char const *argv[])
printf("rx=%d, ry=%d, rz=%d\n", ev.motion.rx, ev.motion.ry, ev.motion.rz);
break;
case BUTTON:
printf("bnum=%d, pressed=%d\n", ev.button.bnum, ev.button.press);
break;
}

49
spnav.c
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@ -37,8 +37,21 @@ int convert_input(int first, unsigned char val) {
}
}
bool in_deadzone(unsigned char *data) {
/* data[0] is the event type */
int i;
for (i=1; i<SPNAV_NAXIS; i++) {
if (data[i] != 0) {
return false;
}
}
DEBUG_PRINT("in_deadzone\n");
return true;
}
int read_event(hid_device *device, spnav_event* ev, int ms) {
unsigned char buf[64];
int i;
int nbytes = hid_read_timeout(device, buf, sizeof(buf), ms);
if (nbytes < 0) {
DEBUG_PRINT("hid_read_timeout() error");
@ -51,26 +64,42 @@ int read_event(hid_device *device, spnav_event* ev, int ms) {
switch (ev->type) {
case TRANSLATION:
ev->type = 1;
if (in_deadzone(buf)) {
ev->type = 0;
return ev->type;
}
ev->motion.type = 1;
ev->motion.x = convert_input((buf[1] & 0x0000ff), buf[2]);
ev->motion.y = convert_input((buf[3] & 0x0000ff), buf[4]);
ev->motion.z = convert_input((buf[5] & 0x0000ff), buf[6]);
for (i=0; i < SPNAV_NAXIS; i++) {
ev->motion.data[i] = buf[i];
}
// DEBUG_PRINT("Translation x=%d, y=%d, z=%d\n", ev->motion.x, ev->motion.y, ev->motion.z);
break;
case ROTATION:
ev->type = 1;
if (in_deadzone(buf)) {
ev->type = 0;
return ev->type;
}
ev->motion.type = 1;
ev->motion.rx = convert_input((buf[1] & 0x0000ff), buf[2]);
ev->motion.ry = convert_input((buf[3] & 0x0000ff), buf[4]);
ev->motion.rz = convert_input((buf[5] & 0x0000ff), buf[6]);
for (i=0; i < SPNAV_NAXIS; i++) {
ev->motion.data[i] = buf[i];
}
// DEBUG_PRINT("Rotation rx=%d, ry=%d, rz=%d\n", ev->motion.rx, ev->motion.ry, ev->motion.rz);
break;
case BTN:
ev->type = 2;
DEBUG_PRINT("Buttons: %d %d\n", /* btn 1 */buf[1] & 0x01, /* btn 2 */ buf[1] & 0x02);
ev->button.type = 2;
ev->button.press = buf[1] == 0x01;
ev->button.bnum = buf[1];
//DEBUG_PRINT("Buttons: %d %d\n", /* btn 1 */buf[1] & 0x01, /* btn 2 */ buf[1] & 0x02);
break;
}
return 0;
return ev->type;
}
int set_led(hid_device *dev, char state) {
@ -81,7 +110,7 @@ int set_led(hid_device *dev, char state) {
nbytes, sizeof(led_data));
return -1;
}
return 0;
return nbytes;
}
int spnav_open() {
@ -123,17 +152,15 @@ int spnav_wait_event(spnav_event *event) {
DEBUG_PRINT("spnav_wait_event(): device not connected.\n");
return -1;
}
read_event(device, event, -1);
return 0;
return read_event(device, event, -1);;
}
spnav_wait_event_timeout(spnav_event *event, int milliseconds) {
int spnav_wait_event_timeout(spnav_event *event, int milliseconds) {
if (device == NULL) {
DEBUG_PRINT("spnav_wait_event_timeout(): device not connected.\n");
return -1;
}
read_event(device, event, milliseconds);
return 0;
return read_event(device, event, milliseconds);;
}
/*
int spnav_wait_event(spnav_event *event);

5
spnav.h
View File

@ -3,6 +3,7 @@
#define SPNAV_VENDOR_ID 0x046d
#define SPNAV_PRODUCT_ID 0xc626
#define SPNAV_NAXIS 6
#ifdef _WIN32
#define SPNAV_API_EXPORT __declspec(dllexport)
@ -25,12 +26,12 @@ struct event_motion {
int x, y, z;
int rx, ry, rz;
unsigned int period;
int *data;
int data[SPNAV_NAXIS];
};
struct event_button {
int type;
int press;
bool press;
int bnum;
};