Control your Samsung ARTIK from your mobile phone
Here we'll show you how to use your phone as a remote control for your Samsung ARTIK.
Your ARTIK can use text-to-voice to construct phone menus that can be used by you or anyone else to control your board from afar. With this power, your ARTIK can work as a remote monitor and call you when it wants your input, opening up a wide range of possibilities for applications that react based on remote user input.
This sketch uses a choreo from our Twilio bundle.
Get Set Up
1Make sure you have a Temboo account. If you don't already have one, you can register for free.
2If this is the first time using Temboo, you'll need to set up your ARTIK board to find the Temboo libraries. To do so, you'll need to create the file temboo.conf in /etc/ld.so.conf.d. Inside of temboo.conf, you'll want to copy the line below and paste it into the file:
/opt/iothub/artik/temboo/temboo_artik_library/lib
After saving temboo.conf, run ldconfig from the command line to add the Temboo library directory to the system library search path.
You’ll also need to get the IP address of your ARTIK board using ifconfig. The example below shows the results when the ARTIK board is connected to the internet through an ethernet cable. The IP address you'll want to use is listed next to inet.
[root@localhost ~]$ ifconfig
eth0: flags=4163 mtu 1500
inet 10.11.6.200 netmask 255.255.255.0 broadcast 10.11.6.255
3You'll also need a Twilio account, which you can create here.
4After you've created your Twilio account, retrieve your Twilio Account SID and Auth Token - you'll need them to run the sketch. You can find your Twilio Account SID and Auth Token on your Twilio Dashboard.
5On the Twilio website, go to your Twiml Bin, and create two Twiml files like the ones below.
<Response>
<Gather input="dtmf" timeout="10" numDigits="1" action="https://ACCOUNT_NAME.temboolive.com/callback/twilio" method="GET">
<Say voice="alice" language="en-US">Enter 1 followed by the star key to turn on the LED.</Say>
</Gather>
</Response>
Note that the above XML needs to contain your Temboo callback URL that includes your Temboo account name as part of the URL.
<Response>
<Say voice="alice" language="en-US">Consider it done!</Say>
</Response>
After creating your two Twiml files, make sure to copy the URLs for these files - you'll need them to run the sketch.
Auto-Generate your ARTIK Code
6Go to the Nexmo > Voice > CaptureTextToSpeechPrompt in our Library.
7Select "Samsung" from the drop down menu at the top of the Choreo page.
8Click Run Now to test out the Choreo from our website. Confirm that your phone gets a call and that when you enter a number on the keypad, that number is returned as part of the Nexmo response in the Output section of the page.
Testing the Nexmo Choreo from our website
9Create a Profile from your Choreo inputs, so that you can refer to this Profile in your code - this will help save memory on your ARTIK board, and also lets you change the behavior of your application by editing the Profile on our website as opposed to editing your code.
10Using the visual pin board, click one of the ARTIK's pins to configure a digital actuator. Next, set an Actuator Trigger Condition for your digital actuator. Indicate that you want to set your actuator's digital pin to high if the user presses 1 on their keypad after receiving the phone call.
11When you've confirmed that the Choreo runs successfully and you've saved a Profile, you can download the auto-generated ARTIK code from the Code section and move it to your device.
12The auto-generated sketch references the TembooAccount.h header file, which contains your Temboo account information. You'll find the code for this file beneath the main auto-generated C code. Make sure to keep both files together on your ARTIK.
13Copy the downloaded zip file to your ARTIK board using scp. From your computer, go to the directory where the zip file is located and type the command below. Make sure you use the IP address for your board you found using ifconfig.
[root@localhost ~]$ scp capturetexttospeechprompt.zip root@xxx.xxx.xxx.xxx:/home
14Now go to the capturetexttospeechprompt directory and compile your code and trigger a phone call from your ARTIK! Run the first command below to compile your code. After compiling has finished and no errors have been reported, run your program using the second command.
[root@localhost ~]$ gcc -L/opt/iothub/artik/temboo/temboo_artik_library/lib -ltemboo -I/opt/iothub/artik/temboo/temboo_artik_library/include capturetexttospeech.c -o capturetexttospeech
[root@localhost ~]$ ./capturetexttospeechprompt
Note: If you get an error about cdefs.h not being found, this could mean your ARTIK board was not shipped with glibc-headers. This can be solved by reinstalling glibc-headers using the command below. After reinstalling glibc-headers, run the two commands above to compile and run your code.
[root@localhost ~]$ yum reinstall glibc-headers
What Next?
When you've got this example working, you're in a position to build any number of applications that involve sensing information on the ARTIK and delegating control to a human when its time to make a choice about what to do next. Your IoT projects just got a whole lot smarter.
Need Help?
If you've got questions about Nexmo, it's best to start by learning more about the Choreo that we use in this example. You might also find what you need by searching Nexmo's Knowledgebase.
For anything to do with Temboo and how it works with your ARTIK, we're always happy to help. Just email us at support@temboo.com, and we'll answer you as quickly as possible.
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