# Error starting redSensorToCloud on mangOH red **URL:** \ **Category:** mangOH Red\ **Created:** [March 18, 2019, 4:20pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482 "2019-03-18T16:20:36Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![langestefan](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@langestefan](https://mangoh.discourse.group/u/langestefan)\ **Post date:** [March 18, 2019, 4:20pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/1 "2019-03-18T16:20:36Z")
Hi, Today I tried to run the redSensorToCloud example on my mangOH red. I followed all the directions and was able to succesfully compile and load the app on the target: my mangOH red board + WP7607-1. Unfortunately when I try to start the app I receive the following error: ``` Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c app_Create() 3167 | Creating app 'redSensorToCloud' Jan 6 00:02:46 | supervisor[836]/supervisor T=main | proc.c GetFaultAction() 323 | No fault action specified for process 'redSensorToCloud'. Assuming 'ignore'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | proc.c GetWatchdogAction() 359 | redSensorToCloud watchdogAction '' in proc section Jan 6 00:02:46 | supervisor[836]/supervisor T=main | proc.c GetWatchdogAction() 359 | redSensorToCloud watchdogAction '' in proc section Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c app_Start() 3380 | Starting app 'redSensorToCloud' Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/dev/log' to '/legato/systems/current/appsWriteable/redSensorToCloud/dev/log'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/dev/null' to '/legato/systems/current/appsWriteable/redSensorToCloud/dev/null'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/dev/zero' to '/legato/systems/current/appsWriteable/redSensorToCloud/dev/zero'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/legato/systems/current/lib/liblegato.so' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/liblegato.so'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/ld-linux.so.3' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/ld-linux.so.3'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/libc.so.6' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libc.so.6'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/libpthread.so.0' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libpthread.so.0'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/librt.so.1' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/librt.so.1'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/libdl.so.2' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libdl.so.2'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/libgcc_s.so.1' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libgcc_s.so.1'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/lib/libm.so.6' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libm.so.6'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/usr/lib/libstdc++.so.6' to '/legato/systems/current/appsWriteable/redSensorToCloud/lib/libstdc++.so.6'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/legato/systems/current/apps/redSensorToCloud/read-only/lib/libComponent_sensorsComponent.so' to '/legato/systems/current/appsWriteabl Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/legato/systems/current/apps/redSensorToCloud/read-only/lib/libComponent_avPublisherComponent.so' to '/legato/systems/current/appsWrit Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2064 | Created file link '/legato/systems/current/apps/redSensorToCloud/read-only/bin/redSensorToCloud' to '/legato/systems/current/appsWriteable/redSensorToClo Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 1952 | Could not stat file at '/sys/devices/platform/led.0/led'. No such file or directory Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c CreateFileLink() 2069 | Failed to create link at '/sys/devices/platform/led.0/led' in app 'redSensorToCloud'. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | app.c app_Start() 3412 | Failed to set Smack rules or set up app area. Jan 6 00:02:46 | supervisor[836]/supervisor T=main | supervisor.c SigChildHandler() 784 | Reaping unconfigured child process 2086. ``` I have seen the same problem raised here: [Error starting redSensorToCloud [Solved]](https://mangoh.discourse.group/t/error-starting-redsensortocloud-solved/1849/7) I tried the solution proposed by [dfrey](https://mangoh.discourse.group/u/dfrey). Unfortunately, this did not seem to solve my problem. Since I’m out of ideas at this point I would appreciate it if someone could help me, since it is blocking me from continuing development. For your convenience, I have added some more information: My /opt/swi folder: ``` mangoh@mangoh-vm:/opt/swi$ ls SWI9X07Y_02.25.02.01 y22-ext-wp76xx y22-ext-SWI9X06Y_02.18.05.00 y22-ext-wp76xx-Release_10.1 y22-ext-SWI9X07Y_02.18.06.00 y22-ext-wp77xx y22-ext-SWI9X07Y_02.25.02.01 y22-ext-wp77xx-Release_9.1 y22-ext-SWI9X15Y_07.13.05.00 y22-ext-wp85 y22-ext-wp750x y22-ext-wp85-wp750x-Release_16.1 mangoh@mangoh-vm:/opt/swi$ ``` Legato AF version: ``` mangoh@mangoh-vm:~/legato_framework$ cat legato/version 18.10.3 ``` Legato target version: ``` root@swi-mdm9x28-wp:~# legato version 18.10.3_0b50331a9f4d0ecc0fd816c2a1300436_modified root@swi-mdm9x28-wp:~# ``` Any help is appreciated. Greetings, Stefan ---
**Author:** ![langestefan](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@langestefan](https://mangoh.discourse.group/u/langestefan)\ **Post date:** [March 18, 2019, 4:27pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/2 "2019-03-18T16:27:00Z")
Output for ls /opt/swi/y22-ext-wp76xx -lha: ``` mangoh@mangoh-vm:~/legato_framework$ ls /opt/swi/y22-ext-wp76xx -lha lrwxrwxrwx 1 root root 28 Mar 18 15:32 /opt/swi/y22-ext-wp76xx -> y22-ext-SWI9X07Y_02.25.02.01 ``` ---
**Author:** ![langestefan](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@langestefan](https://mangoh.discourse.group/u/langestefan)\ **Post date:** [March 22, 2019, 1:50pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/3 "2019-03-22T13:50:20Z")
Nobody has a solution? I will unfortunately have to cancel the project if this is not solved 😕 ---
**Author:** ![mpetersen](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/mpetersen/32/1177_2.png) [@mpetersen](https://mangoh.discourse.group/u/mpetersen)\ **Post date:** [March 25, 2019, 2:42pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/4 "2019-03-25T14:42:01Z")
A painful process I know - but perhaps it’s worth re-running through the build process (effectively a full rebuild) with a careful eye on current/correct/matching versions and on any faults thrown during any of the intermediary steps. (I have personally not encountered this issue). Best of luck. ---
**Author:** ![langestefan](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@langestefan](https://mangoh.discourse.group/u/langestefan)\ **Post date:** [March 25, 2019, 3:00pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/5 "2019-03-25T15:00:51Z")
Hi, thank you for your answer. By a full rebuild, do you mean a rebuild of the MangOH VM or a rebuild of the redSensorToCloud application? ---
**Author:** ![mpetersen](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/mpetersen/32/1177_2.png) [@mpetersen](https://mangoh.discourse.group/u/mpetersen)\ **Post date:** [March 25, 2019, 3:47pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/6 "2019-03-25T15:47:22Z")
I would recommend a full rebuild - ensuring you have the most recent versions/releases. While I did not encounter your issue I had others and this process resolved them for me. I rebuilt using the latest, Legato Distro 18.10.3 and for me the WP77xx and double-checking all matching versions. Carefully eyeballing the output of every build/make/compile step to ensure no errors were thrown that I had missed before moving on to the next step. ---
**Author:** ![langestefan](https://avatars.discourse-cdn.com/v4/letter/l/a4c791/32.png) [@langestefan](https://mangoh.discourse.group/u/langestefan)\ **Post date:** [March 25, 2019, 8:18pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/7 "2019-03-25T20:18:11Z")
I will try that, thanks for the suggestion. Any advice on how to make sure I have the most recent versions / releases of everything? I am new to linux and legato has been quite the learningcurve to say the least. Other thing to notice, it has only been this specific app that has been causing issues. All the other examples seem to run fine. I am just really worried that if I can not fix this error it will become a problem in a later stage of development. ---
**Author:** ![iotenginyers](https://avatars.discourse-cdn.com/v4/letter/i/73ab20/32.png) [@iotenginyers](https://mangoh.discourse.group/u/iotenginyers)\ **Post date:** [April 19, 2019, 7:38pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/8 "2019-04-19T19:38:48Z")
I have restarted with a new VM and I have the same problem. ---
**Author:** ![dfrey](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/dfrey/32/303_2.png) [@dfrey](https://mangoh.discourse.group/u/dfrey)\ **Post date:** [April 19, 2019, 10:12pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/9 "2019-04-19T22:12:22Z")
If anyone is still having this issue, please try with the latest release for your module and the associated toolchain. Then build against Legato 19.01. If that doesn’t work, post the full output of `dmesg` after a reboot has completed. ---
**Author:** ![iotenginyers](https://avatars.discourse-cdn.com/v4/letter/i/73ab20/32.png) [@iotenginyers](https://mangoh.discourse.group/u/iotenginyers)\ **Post date:** [April 20, 2019, 12:00am UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/10 "2019-04-20T00:00:15Z")
That solved the problem. Thank you ! ---
**Author:** ![Larumbe2019](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@Larumbe2019](https://mangoh.discourse.group/u/Larumbe2019)\ **Post date:** [May 23, 2019, 9:04am UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/11 "2019-05-23T09:04:09Z")
Hello I´m executing RedSensorToCloud with firmware version in the module 2.16 and Legato Framework 18.09 but application stops . In the pass I have run this application without problems but with a previous Legato Framework. 18.05 This is the error I have related with the led service. **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1507 | Could not stat file at ‘/sys/devices/platform/led.0/led’. No such file or directory** **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1624 | Failed to create link at ‘/sys/devices/platform/led.0/led’ in app ‘redSensorToCloud’.** **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c app\_Start() 2954 | Failed to set Smack rules or set up app area**. I have add the LedService by pointing the directory 1. Right click on the API’s directory under the new project. 2. Add the LedService by pointing the directory. When I dowload the application to the module WP7702 I receive the message that "Legato Framework version used in application 18.09.01 and running on the devices 18.06.1 are not the same. " In SierraWirless source latest firmware version for the module I have is 2.16 Jan 6 01:21:03 | supervisor[779]/supervisor T=main | app.c CreateFileLink() 1507 | Could not stat file at ‘/sys/devices/platform/led.0/led’. No such file or directory Jan 6 01:21:03 | supervisor[779]/supervisor T=main | app.c CreateFileLink() 1624 | Failed to create link at ‘/sys/devices/platform/led.0/led’ in app ‘redSensorToCloud’. Jan 6 01:21:03 | supervisor[779]/supervisor T=main | app.c app\_Start() 2954 | Failed to set Smack rules or set up app area. mangoh@mangoh-vm:~/legato\_framework$ ls -al .repo total 36 drwxrwxr-x 7 mangoh mangoh 4096 Nov 8 2018 . drwxrwxr-x 4 mangoh mangoh 4096 May 8 2018 … drwxrwxr-x 4 mangoh mangoh 4096 May 8 2018 manifests drwxrwxr-x 10 mangoh mangoh 4096 Jan 22 23:36 manifests.git lrwxrwxrwx 1 mangoh mangoh 44 Nov 8 2018 manifest.xml -\> manifests/legato/releases/18.09.0/legato.xml -rw-rw-r-- 1 mangoh mangoh 888 Jan 22 17:39 project.list drwxrwxr-x 31 mangoh mangoh 4096 Nov 8 2018 project-objects drwxrwxr-x 4 mangoh mangoh 4096 May 8 2018 projects drwxrwxr-x 7 mangoh mangoh 4096 May 8 2018 repo -rw-rw-r-- 1 mangoh mangoh 1507 Jan 22 17:39 .repo\_fetchtimes.json ATI3 Manufacturer: Sierra Wireless, Incorporated Model: WP7702 Revision: SWI9X06Y\_02.16.06.00 7605a6 jenkins 2018/06/20 17:56:12 IMEI: 352653090132077 IMEI SV: 2 FSN: VU829285460610 +GCAP: +CGSM,+DS This error the log I have May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c app\_Start() 2926 | Starting app ‘redSensorToCloud’ May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/dev/log’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/dev/log’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/dev/null’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/dev/null’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/dev/zero’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/dev/zero’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/legato/systems/current/lib/liblegato.so’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/liblegato.so’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/ld-linux.so.3’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/ld-linux.so.3’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/libc.so.6’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libc.so.6’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/libpthread.so.0’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libpthread.so.0’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/librt.so.1’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/librt.so.1’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/libdl.so.2’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libdl.so.2’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/libgcc\_s.so.1’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libgcc\_s.so.1’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/lib/libm.so.6’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libm.so.6’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/usr/lib/libstdc++.so.6’ to ‘/legato/systems/current/appsWriteable/redSensorToCloud/lib/libstdc++.so.6’. May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/legato/systems/current/apps/redSensorToCloud/read-only/lib/libComponent\_sensorsComponent.so’ to '/legato/systems/current/appsWriteabl May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/legato/systems/current/apps/redSensorToCloud/read-only/lib/libComponent\_avPublisherComponent.so’ to '/legato/systems/current/appsWrit May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1619 | Created file link ‘/legato/systems/current/apps/redSensorToCloud/read-only/bin/redSensorToCloud’ to '/legato/systems/current/appsWriteable/redSensorToClo **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1507 | Could not stat file at ‘/sys/devices/platform/led.0/led’. No such file or directory** **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c CreateFileLink() 1624 | Failed to create link at ‘/sys/devices/platform/led.0/led’ in app ‘redSensorToCloud’.** **May 23 08:54:17 | supervisor[783]/supervisor T=main | app.c app\_Start() 2954 | Failed to set Smack rules or set up app area.** May 23 08:54:17 | supervisor[783]/supervisor T=main | supervisor.c SigChildHandler() 783 | Reaping unconfigured child process 3608. I have update rebuild the system with the latest version but the result is the same . Any idea? Thanks Isabel ---
**Author:** ![Larumbe2019](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@Larumbe2019](https://mangoh.discourse.group/u/Larumbe2019)\ **Post date:** [May 28, 2019, 4:02pm UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/12 "2019-05-28T16:02:14Z")
Hello I have “RedSensorToCloud” already runnig but building the application with commands. It generates the file " mangoOH.wp77xx.update" This application has dependencies with “LedService”, “DataHub” and “Battery”. When downloading the application in the WP7702 appears these application running. There should be some documentation about that. Before “RedSensortoCloud” didn´t have these dependencies. When trying to complile using developer Studio updating the Developer estudio to Legato Frameworks 18.09 I have follow these indications > **[Adding newest version Legato Framework into Developer Studio](https://forum.legato.io/t/adding-newest-version-legato-framework-into-developer-studio/2654)** > > Hi! I am wondering how to add Legato frameworks newer than 16.10.3 into the DS. I am using 17.07.1 now but I do not find anywhere that I can import this into DS. Nothing newer than 16.10.3 can be found in the Package Perspective either. Does the DS... I generate all the files without issue but they don´t run OK . File “mangoOH.wp77xx.update” generate by developer studio only generate the “Datahub” when is downloading on the modules. Then I have add “Led Service” and “BatterY” but application does not run anyway. I doný know why. When creating the project I import the Project from a existing code and then I browse from mangoh/MangoOH. Previously I have configuree the DS environment for MangOH projects. In the **Window \> Preferences \> C/C++ \> Build \> Environment** , add: 1. a **MANGOH\_ROOT** variable pointing to the MangOH clone (i.e. **/home/mangoh/mangOH** ) 2. a **MANGOH\_BOARD** variable equals to the board you’re targeting (either **RED** or **GREEN** ). I would like to run the samples with “Developer Studio” and changes on the basics application and dependencies should be documented. Thanks Isabel ---
**Author:** ![Larumbe2019](https://avatars.discourse-cdn.com/v4/letter/l/47e85d/32.png) [@Larumbe2019](https://mangoh.discourse.group/u/Larumbe2019)\ **Post date:** [May 29, 2019, 9:21am UTC](https://mangoh.discourse.group/t/error-starting-redsensortocloud-on-mangoh-red/2482/13 "2019-05-29T09:21:54Z")
Hello I have also add the new app dependencies defined in sdef file of MangOH.sdef adding the appropriate paths in the **project properties \> C/C++ build \> Settings** dialog, in **Interfaces** or **Dependencies** sections but still i have the same problem. I ´m still missing something. ${CURDIR}/interfaces $LEGATO\_ROOT/apps/sample/dataHub ${CURDIR}/apps/BatteryService Components "{CURDIR}/components" {CURDIR}/apps/RedSensorToCloud “${CURDIR}/apps/BatteryService/battery” “${CURDIR}/apps/RedSensorToCloud” Thanks Isabel