Menu
▾
▴
Re: [Playerstage-users] Laser error
|
From: Toby C. <tco...@pl...> - 2008-02-19 21:31:17
|
what version of player are you using?
On 20/02/2008, jalg <hea...@gm...> wrote:
>
>
> I'm trying to write a simple client that uses the laser device, but I
> there's
> a pointer error in my code. I studied it over and over again, and I can't
> find my mistake. I would appreciate if someone could help me look at it. I
> get the following as output:
>
> ======= Backtrace: =========
> /lib/tls/i686/cmov/libc.so.6[0xb7deed65]
> /lib/tls/i686/cmov/libc.so.6(cfree+0x90)[0xb7df2800]
>
> /usr/local/lib/libplayerxdr.so.2(player_laser_config_t_free+0x2a)[0xb7ef4c0a]
> /usr/local/lib/libplayerc.so.2(playerc_laser_set_config+0xa2)[0xb7f54c62]
> ./myclient[0x8048b7b]
> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0xb7d9b050]
> ./myclient[0x8048961]
> ======= Memory map: ========
> 08048000-08049000 r-xp 00000000 08:01 1338549 /home/jars/work/myclient
> 08049000-0804a000 rw-p 00000000 08:01 1338549 /home/jars/work/myclient
> 0804a000-0806c000 rw-p 0804a000 00:00 0 [heap]
> b3300000-b3321000 rw-p b3300000 00:00 0
> b3321000-b3400000 ---p b3321000 00:00 0
> b3498000-b34a2000 r-xp 00000000 08:01 522307 /lib/libgcc_s.so.1
> b34a2000-b34a3000 rw-p 0000a000 08:01 522307 /lib/libgcc_s.so.1
> b34a3000-b34ac000 r-xp 00000000 08:01 557911
> /lib/tls/i686/cmov/libnss_files-2.6.1.so
> b34ac000-b34ae000 rw-p 00008000 08:01 557911
> /lib/tls/i686/cmov/libnss_files-2.6.1.so
> b34ae000-b7d08000 rw-p b34ae000 00:00 0
> b7d08000-b7d27000 r-xp 00000000 08:01
> 67088 /usr/lib/libjpeg.so.62.0.0
> b7d27000-b7d28000 rw-p 0001e000 08:01
> 67088 /usr/lib/libjpeg.so.62.0.0
> b7d28000-b7d2a000 r-xp 00000000 08:01 557905
> /lib/tls/i686/cmov/libdl-2.6.1.so
> b7d2a000-b7d2c000 rw-p 00001000 08:01 557905
> /lib/tls/i686/cmov/libdl-2.6.1.so
> b7d2c000-b7d32000 r-xp 00000000 08:01 73712 /usr/lib/libltdl.so.3.1.5
> b7d32000-b7d33000 rw-p 00005000 08:01 73712 /usr/lib/libltdl.so.3.1.5
> b7d33000-b7d47000 r-xp 00000000 08:01 67378 /usr/lib/libz.so.1.2.3.3
> b7d47000-b7d48000 rw-p 00013000 08:01 67378 /usr/lib/libz.so.1.2.3.3
> b7d48000-b7d4f000 r-xp 00000000 08:01 557918
> /lib/tls/i686/cmov/librt-2.6.1.so
> b7d4f000-b7d51000 rw-p 00006000 08:01 557918
> /lib/tls/i686/cmov/librt-2.6.1.so
> b7d51000-b7d65000 r-xp 00000000 08:01 557908
> /lib/tls/i686/cmov/libnsl-2.6.1.so
> b7d65000-b7d67000 rw-p 00013000 08:01 557908
> /lib/tls/i686/cmov/libnsl-2.6.1.so
> b7d67000-b7d6a000 rw-p b7d67000 00:00 0
> b7d6a000-b7d7e000 r-xp 00000000 08:01 557916
> /lib/tls/i686/cmov/libpthread-2.6.1.so
> b7d7e000-b7d80000 rw-p 00013000 08:01 557916
> /lib/tls/i686/cmov/libpthread-2.6.1.so
> b7d80000-b7d82000 rw-p b7d80000 00:00 0
> b7d82000-b7d84000 r-xp 00000000 08:01 67189
> /usr/local/lib/libplayerutils.so.2.1.0
> b7d84000-b7d85000 rw-p 00001000 08:01 67189
> /usr/local/lib/libplayerutils.so.2.1.0
> b7d85000-b7ec9000 r-xp 00000000 08:01 557902
> /lib/tls/i686/cmov/libc-2.6.1.so
> b7ec9000-b7eca000 r--p 00143000 08:01 557902
> /lib/tls/i686/cmov/libc-2.6.1.so
> b7eca000-b7ecc000 rw-p 00144000 08:01 557902
> /lib/tls/i686/cmov/libc-2.6.1.so
> b7ecc000-b7ecf000 rw-p b7ecc000 00:00 0
> b7ecf000-b7ed0000 r-xp 00000000 08:01 67013
> /usr/local/lib/libplayererror.so.2.1.0
> b7ed0000-b7ed1000 rw-p 00000000 08:01 67013
> /usr/local/lib/libplayererror.so.2.1.0
> b7ed1000-b7f10000 r-xp 00000000 08:01 66780
> /usr/local/lib/libplayerxdr.so.2.1.0
> b7f10000-b7f13000 rw-p 0003e000 08:01 66780
> /usr/local/lib/libplayerxdr.so.2.1.0
> b7f13000-b7f14000 rw-p b7f13000 00:00 0
> b7f14000-b7f37000 r-xp 00000000 08:01 557906
> /lib/tls/i686/cmov/libm-2.6.1.so
> b7f37000-b7f39000 rw-p 00023000 08:01 557906
> /lib/tls/i686/cmov/libm-2.6.1.so
> b7f46000-b7f5d000 r-xp 00000000 08:01 73042
> /usr/local/lib/libplayerc.so.2.1.0
> b7f5d000-b7f5e000 rw-p 00016000 08:01 73042
> /usr/local/lib/libplayerc.so.2.1.0
> b7f5e000-b7f60000 rw-p b7f5e000 00:00 0
> b7f60000-b7f7a000 r-xp 00000000 08:01 523922 /lib/ld-2.6.1.so
> b7f7a000-b7f7c000 rw-p 00019000 08:01 523922 /lib/ld-2.6.1.so
> bf9a8000-bf9bd000 rw-p bf9a8000 00:00 0 [stack]
> ffffe000-fffff000 r-xp 00000000 00:00 0 [vdso]
> Aborted (core dumped)
>
>
> Here's my code:
>
> #include <stdio.h>
> #include <libplayerc/playerc.h>
>
> int main(int argc, const char **argv)
> {
> int i;
> playerc_client_t *client;
> playerc_position2d_t *position2d;
> playerc_laser_t *laser;
>
> double min, max, scanning_frequency, resolution, range_res;
> unsigned char intensity;
>
> client = playerc_client_create(NULL,"localhost",6665);
> if(playerc_client_connect(client) != 0)
> {
> fprintf(stderr, "error: %s\n", playerc_error_str());
> return -1;
> }
>
> // Create a position2d proxy (device id "position2d:0") and
> susbscribe
> // in read/write mode
> position2d = playerc_position2d_create(client, 0);
> if (playerc_position2d_subscribe(position2d, PLAYERC_OPEN_MODE) !=
> 0)
> {
> fprintf(stderr, "error: %s\n", playerc_error_str());
> return -1;
> }
>
> // Enable the robots motors
> playerc_position2d_enable(position2d, 1);
>
> // Start the robot moving
> playerc_position2d_set_cmd_vel(position2d, 0.3, 0, 0.2, 1);
>
> // Create a laser proxy (device id "laser:0") and susbscribe
> // in read/write mode
> laser = playerc_laser_create(client,0);
> if(playerc_laser_subscribe(laser, PLAYERC_OPEN_MODE) != 0)
> {
> fprintf(stderr, "error: %s\n", playerc_error_str());
> return -1;
> }
>
> // Configure laser
> min = -3.1416/2;
> max = 3.1416/2;
> resolution = 100;
> range_res = 1;
> intensity = 1;
> if(playerc_laser_set_config(laser, min, max, resolution,
> range_res,
> intensity, scanning_frequency) != 0)
> {
> fprintf(stderr, "error: %s\n", playerc_error_str());
> return -1;
> }
>
>
>
> for (i = 0; i < 50; i++)
> {
> // Read data from the server and display current robot
> position
> playerc_client_read(client);
> printf("position : %f %f %f\n",position2d->px,
> position2d->py,
> position2d->pa);
> }
>
> playerc_laser_unsubscribe(laser);
> playerc_laser_destroy(laser);
>
> playerc_position2d_unsubscribe(position2d);
> playerc_position2d_destroy(position2d);
>
> playerc_client_disconnect(client);
> playerc_client_destroy(client);
>
> return 0;
> }
>
> --
> View this message in context:
> http://www.nabble.com/Laser-error-tp15566516p15566516.html
> Sent from the playerstage-users mailing list archive at Nabble.com.
>
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Playerstage-users mailing list
> Pla...@li...
> https://lists.sourceforge.net/lists/listinfo/playerstage-users
>
--
This email is intended for the addressee only and may contain privileged
and/or confidential information
|