# Make yellow error **URL:** \ **Category:** mangOH Yellow\ **Created:** [November 11, 2020, 11:42pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632 "2020-11-11T23:42:58Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 13, 2020, 3:37am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/21 "2020-11-13T03:37:10Z")
Ok but are sure that the driver WL18 are also needed for yellow as we do not put any BLE card like on the green mangOH? ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 13, 2020, 3:44am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/22 "2020-11-13T03:44:37Z")
If you see the bt-init.sh in the document, it will use ``` modprobe hci_uart sleep 1 modprobe bluetooth sleep 1 modprobe rfcomm sleep 1 modprobe hidp sleep 1 modprobe bnep sleep 1 ``` so you can double check if currently you have these drivers. BTW, if you don’t put on the WL81xx bluetooth card, how are you going to use it? ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 13, 2020, 3:58am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/23 "2020-11-13T03:58:45Z")
The bluetooth is integrated on the card according to the user guide doc. So I guess we can use it directly… You are talking about the document for mango green that you sent? > **[How to test bluetooth WL18xx IOT card on WP77xx MangOH Green board.docx](https://drive.google.com/file/d/1oczqd4JzVsCaqyssh4h15vqCBndasFQj/view)** > > Google Drive file. ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 13, 2020, 4:00am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/24 "2020-11-13T04:00:46Z")
yes, I am talking about this document… OK, you can simply check if you can enter the following then: ``` modprobe hci_uart sleep 1 modprobe bluetooth sleep 1 modprobe rfcomm sleep 1 modprobe hidp sleep 1 modprobe bnep sleep 1 ``` ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 13, 2020, 4:18am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/25 "2020-11-13T04:18:19Z")
OK. i am confused about whether we must buy an extension for bluetooth with mango Yellow to be honest. ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 13, 2020, 4:34am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/26 "2020-11-13T04:34:55Z")
here says it has bluetooth function already: > [@Bluetooth on mangOH Yellow](https://mangoh.discourse.group/t/bluetooth-on-mangoh-yellow/3372/5): > > wow, restart device helps ! thanks! now we can test it deeper… ---
**Author:** ![pinst](https://avatars.discourse-cdn.com/v4/letter/p/d78d45/32.png) [@pinst](https://mangoh.discourse.group/u/pinst)\ **Post date:** [November 13, 2020, 2:34pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/27 "2020-11-13T14:34:49Z")
Bluetooth on mangOH yellow works out of the box. Nothing needs to be done. ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 14, 2020, 11:29am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/28 "2020-11-14T11:29:39Z")
Please what do I need more to get started with the mangoH yellow. I followed all these steps: [http://mangoh.io/uploaded-documents/Reference/mangOH%20Yellow/Discover/Getting%20Started/41113347%20mangOH%20Yellow%20GSG%20-%20HTML5-Responsive%20HTML5/#t=41113347\_mangOH\_Yellow\_GSG\_-\_HTML5%2FInstall\_Leaf\_and\_Build\_mangOH\_Software%2FInstall\_Leaf\_and\_Build\_mangOH\_Software.htm](http://mangoh.io/uploaded-documents/Reference/mangOH%20Yellow/Discover/Getting%20Started/41113347%20mangOH%20Yellow%20GSG%20-%20HTML5-Responsive%20HTML5/#t=41113347_mangOH_Yellow_GSG_-_HTML5%2FInstall_Leaf_and_Build_mangOH_Software%2FInstall_Leaf_and_Build_mangOH_Software.htm) Can I start now or do I have to install Legato as well like in this video: [![](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/4/4b4cc342658e1c87f55e5c04640acf1a5b7458ee.jpeg "01 Installing Legato and mangOH on Device") ](https://www.youtube.com/watch?v=rUqzkDaQNa4) Is there a procedure on how to use the git codes and apply to start building my application? Thanks ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 14, 2020, 11:38am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/29 "2020-11-14T11:38:07Z")
You need to install leaf tool and vscode > **[Legato Plugin for VSCode - Legato Docs](https://docs.legato.io/latest/tools_vsCode.html)** ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 15, 2020, 3:21pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/30 "2020-11-15T15:21:23Z")
Thanks. Another question: is it possible to stop a list of application in one command? ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/5/5c9160d086f88d0cd2ee38e6e7bd8a2cbd7be440.png) ---
**Author:** ![pinst](https://avatars.discourse-cdn.com/v4/letter/p/d78d45/32.png) [@pinst](https://mangoh.discourse.group/u/pinst)\ **Post date:** [November 15, 2020, 4:17pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/31 "2020-11-15T16:17:14Z")
Apparently app stop takes only one argument. You could write a simple bash script to accept multiple applications though. ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 16, 2020, 11:41am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/32 "2020-11-16T11:41:34Z")
Thanks. Could you tell me how can I solve this issue: Many #include xxxxxxxx don’t work. Error message is : ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/e/e8a0a7968892bb7d4680d13b8fb2e2494ec98012.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 16, 2020, 11:44am UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/33 "2020-11-16T11:44:25Z")
Can you build the app? Ctrl+shift+b \> build ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 16, 2020, 12:23pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/34 "2020-11-16T12:23:11Z")
No here what I get. Maybe it is because I create my app in mangOH folder and not in leaf-data folder - see below the architecture which comes from downloading from the procedure. Where it is recommended to create app please? ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/3/35c1fa98b94904179376b7830f52c6def84cf94f.png) ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/f/fad2b675ffb1c9a02bd006c46b75e1f26505d43b.png) ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 16, 2020, 1:06pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/35 "2020-11-16T13:06:42Z")
i created the new app in the app folder. ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 16, 2020, 1:12pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/36 "2020-11-16T13:12:51Z")
Yes but there is an app folder in leaf-data and in mangOH folder… I’ve tried to launch the app from another location and build and it works. But when I connect to my target and write a logread nothing happens. Is there anything to do to display something, except app start (what I did)? ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/2/2cf09d1f60af2a29daad71d961947628e9d20e7b.png) ---
**Author:** ![pinst](https://avatars.discourse-cdn.com/v4/letter/p/d78d45/32.png) [@pinst](https://mangoh.discourse.group/u/pinst)\ **Post date:** [November 16, 2020, 1:34pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/37 "2020-11-16T13:34:46Z")
logread -f only displays messages going forward. If helloWorld has already started you might not see anything. Try logread | grep helloWorld . ---
**Author:** ![jyijyi](https://sea2.discourse-cdn.com/flex016/user_avatar/mangoh.discourse.group/jyijyi/32/997_2.png) [@jyijyi](https://mangoh.discourse.group/u/jyijyi)\ **Post date:** [November 16, 2020, 1:39pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/38 "2020-11-16T13:39:39Z")
I think cm tool will also print out something ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 16, 2020, 1:49pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/39 "2020-11-16T13:49:13Z")
Ok I’ll try. thanks. Is it also normal to have this message? ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/1/12d744e8fc6b1b309b5ab0b5ce63cc7301064acf.png) ---
**Author:** ![marckasse](https://avatars.discourse-cdn.com/v4/letter/m/dbc845/32.png) [@marckasse](https://mangoh.discourse.group/u/marckasse)\ **Post date:** [November 16, 2020, 1:55pm UTC](https://mangoh.discourse.group/t/make-yellow-error/5632/40 "2020-11-16T13:55:37Z")
with cm info ![image](https://us1.discourse-cdn.com/flex016/uploads/mangoh/original/2X/d/d64fbd46b52a270c8d930dcd7b571d5ce2571612.png) [Previous page](https://mangoh.discourse.group/t/make-yellow-error/5632.md?page=1) [Next page](https://mangoh.discourse.group/t/make-yellow-error/5632.md?page=3)