topic Quote:matthias-hahn (Intel) in Software Archive

Segmentation fault Using example 3_c_onboard_LED_blink

Mike_M_3 — Thu, 02 Oct 2014 01:52:36 GMT

I opened the example "3_c_onboard_LED_blink" in eclipse, changed nothing to it. Built it and executed it.

In the console window i received the following. Not sure what a Segmentation fault is.

root@edison:~#
echo $PWD'>'
/home/root>
root@edison:~#
root@edison:~# chmod 755 /tmp/3_c_onboard_LED_blink;/tmp/3_c_onboard_LED_blink;e
xit
Welcome to libmraa
Version: v0.5.0-12-g3898182
Running on Some weird devboard that isn't recognised...
Segmentation fault

Quote:Mike M. wrote:

Brendan_L_Intel — Thu, 02 Oct 2014 08:01:57 GMT

Mike M. wrote:

Running on Some weird devboard that isn't recognised...

Segmentation fault

Could you share with us the version of the OS/firmware on your edison board? A seg fault is a critical error, in this case caused by your board being unrecognied because of an invalid name in the DMI tables. This will cause galileo gen1 tables to be loaded and somewhere after cause a crash. mraa_init() returning non zero is a fatal error.

What's the output of:

cat /sys/devices/virtual/dmi/id/board_name

Thanks,

Brendan

BODEGA BAY

Mike_M_3 — Thu, 02 Oct 2014 11:29:00 GMT

<blockquote>What's the output of: cat /sys/devices/virtual/dmi/id/board_name</blockquote>

BODEGA BAY

and the output of

Matthias_H_Intel — Thu, 02 Oct 2014 14:08:40 GMT

and the output of

cat /etc/version

in order to answer Brendans's other question on OS/firmware

edison-weekly_build_68_2014

Mike_M_3 — Thu, 02 Oct 2014 14:13:45 GMT

edison-weekly_build_68_2014-09-08_13-49-07

ok, so far everything looks

Matthias_H_Intel — Thu, 02 Oct 2014 17:27:01 GMT

ok, so far everything looks good. What's the host OS where you run the Eclipse IDE?

Win7 64-bit.

Mike_M_3 — Thu, 02 Oct 2014 17:31:04 GMT

Win7 64-bit.

just tried on a Windows 8 x64

Matthias_H_Intel — Thu, 02 Oct 2014 17:38:00 GMT

just tried on a Windows 8 x64 host. Everything working fine. So maybe you need to share some more info on how you ran it?

Compile output:

19:29:27 **** Rebuild of configuration Debug for project 3_c_onboard_LED_blink ****
Info: Internal Builder is used for build
i586-poky-linux-gcc "-IC:\\[...]\ide\\iotdk-ide-win/devkit-x86/sysroots/i586-poky-linux/usr/include" "-IC:\\[...]\\ide\\iotdk-ide-win/devkit-x86/sysroots/i586-poky-linux/usr/include/mraa" -Os -g3 -Wall "--sysroot=C:\\[...]\\ide\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -m32 -march=i586 -c -ffunction-sections -fdata-sections -o "src\\3_c_onboard_LED_blink.o" "..\\src\\3_c_onboard_LED_blink.c" 
i586-poky-linux-gcc "-LC:\\[...]\\ide\\iotdk-ide-win/devkit-x86/sysroots/i586-poky-linux/usr/lib" "--sysroot=C:\\[...]\\ide\\iotdk-ide-win\\devkit-x86\\sysroots\\i586-poky-linux" -lmraa -o 3_c_onboard_LED_blink "src\\3_c_onboard_LED_blink.o"

"Run As" configurations:

Run output:

root@edison1:~# echo $PWD'>'

/home/root>
root@edison1:~# 
root@edison1:~# chmod 755 /tmp/3_c_onboard_LED_blink;/tmp/3_c_onboard_LED_blink;
exit
Welcome to libmraa
 Version: v0.5.0-12-g3898182
 Running on Some weird devboard that isn't recognised...

For what it's worth, I can

Mike_M_3 — Thu, 02 Oct 2014 17:38:52 GMT

For what it's worth, I can compile all examples successfully with no errors.

I can run examples 1,2, 8 & 9.

When i run examples 3,4,5,6,7 is where i get the Segmentation fault

I have the same., yet my

Mike_M_3 — Thu, 02 Oct 2014 17:44:50 GMT

I have the same., yet my output is

I think a better question is,

Mike_M_3 — Thu, 02 Oct 2014 17:54:55 GMT

I think a better question is, since this DK is for the Edison, why aren't the examples made for it?

Why would they not include the edison ?

typedef enum {
    MRAA_INTEL_GALILEO_GEN1 = 0, /**< The Generation 1 Galileo platform (RevD) */
    MRAA_INTEL_GALILEO_GEN2 = 1, /**< The Generation 2 Galileo platform (RevG/H) */

    MRAA_UNKNOWN_PLATFORM = 99 /**< An unknown platform type, typically will load INTEL_GALILEO_GEN1 */
} mraa_platform_t;

Another Tid bit, and then i

Mike_M_3 — Thu, 02 Oct 2014 18:56:03 GMT

Another Tid bit, and then i will stop flooding this thread.

I headed over to github to try a example there, this is the one i tried.

https://github.com/intel-iot-devkit/mraa/blob/master/examples/mmap-io2.c

I get the same results.

Quote:Mike M. wrote:

Brendan_L_Intel — Thu, 02 Oct 2014 19:50:36 GMT

Mike M. wrote:

Another Tid bit, and then i will stop flooding this thread.

I headed over to github to try a example there, this is the one i tried.

https://github.com/intel-iot-devkit/mraa/blob/master/examples/mmap-io2.c

I get the same results.

Hi Mike,

mraa_init() will get called either way, and the message you are getting is from that call which is failing. I'm not entirely sure why, whilst the libs in the eclipse build don't match whats on your board, for mraa_init() we're typically able to 'get away with it'. We're investigating further.

if you copy over the

Matthias_H_Intel — Thu, 02 Oct 2014 20:54:40 GMT

if you copy over the generated binary - does this run on Edison?

Just so i am clear on what

Mike_M_3 — Fri, 03 Oct 2014 01:23:42 GMT

Just so i am clear on what your asking.

The first thing i did was open a terminal and delete the files in the /tmp just to make sure...

In Project Explorer I clicked on the project then opened the debug folder, right clicked on the file 3_c_onboard_LED_blink and clicked copy. Then I clicked on remote system explorer. drilled down to the /tmp folder and pasted it there.

I then went back to the terminal tried to run it, permission denied. did a chmod +x 3_c_onboard_LED_blink, then tried it again and it ran but gave the same results.

Can you clarify what

Brendan_L_Intel — Fri, 03 Oct 2014 09:06:17 GMT

Can you clarify what baseboard you have plugged into the edison? Note we only support the arduino breakout board at this point.

I have the Intel Edison

Mike_M_3 — Fri, 03 Oct 2014 11:27:58 GMT

I have the Intel Edison Breakout Board Kit Model EDI1BB.AL.K

I dont see how that has anything to do with it other than the fact that the output pin is wrong to flash a led.

I have received an answer to

Mike_M_3 — Fri, 03 Oct 2014 18:09:14 GMT

I have received an answer to this. Maybe helpful to others who are using the edison mini breakout board like me.

mraa only supports the arduino breakout board, you cannot use it with the edison mini breakout board.

So for now we just sit and wait....

Thanks for posting this. Do

David_B_7 — Tue, 07 Oct 2014 13:32:19 GMT

Thanks for posting this. Do the C/C++ libraries work, or are we totally dead in the water regarding GPIO access without the Arduino board?

If your not using the Arduino

Mike_M_3 — Tue, 07 Oct 2014 13:38:20 GMT

If your not using the Arduino board, And try to access the GPIO using libmraa It will compile just fine, but when you try to run it you will get a "Segmentation fault" in the terminal window and it just stops. So for now we have to wait until they fix it.