Send data to multiple variables in DataDrop via its API?

Questions
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1

Hello
I am new in Wolfram so I am trying to send data to Cloud.
I dave databin URL addres but in here i can send only values.
For instance;

at#httpcfg=0,\"datadrop.wolframcloud.com\",80,0\r
at#httpqry=0,0,\"/api/v1.0/Add?bin=my_ID&45

I can send like this(45) but I am reading data from sensor so i need to put variables in there like

at#httpqry=0,0,\"/api/v1.0/Add?bin=my_ID&x_angle

but this is not correct.What can I do? How can I determine this? I will not send directly values, I will put variables name and after when variables get data, it sends from there.
I hope it is clear
Thank you!

2

Hi,

The URL interface uses REST parameters that use a key value system. So if you want to have the value 45 associated with x_angle, you can make the following request:

https://datadrop.wolframcloud.com/api/v1.0/Add?bin=ID&x_angle=45

Hope this helps. You can read more about REST parameters and how they’re specified here : Web API | Adding Data - Wolfram Data Drop Quick Reference

Thanks,

Ian

3

Hello Ian
Thanks for answer but my question is

int x_angle=45,11,22,33,44,55,66,77,88,99;
https://datadrop.wolframcloud.com/api/v1.0/Add?bin=ID&x_angle

I am reading data from sensor so I need to send these data. In here, x_angle is a variable so it can change.
I have 10 different vaules so I need to send step by step.
If you want to send data &x_angle=45 or &45 like this ok but How can I send variables? Because I am using stm32f with telit Gprs module.
Thanks
Ugur

4

Hi Ugur,

I’m not sure what programming environment you’re using, but if you need to send more than one value for the piece of data, you just make another request. For example, in C you can use something like snprintf_s to make the url using the current value of the variable, then later on change it again.

char buffer[100] = {0};
for(...)
{
    int x_angle = getData();
    sprintf(buffer,100,"https://datadrop.wolframcloud.com/api/v1.0/Add?bin=ID&x_angle=%d",x_angle);
    //make request using buffer
}

There are of course other ways to do this depending on what programming language / environment you’re using.

Thanks,

Ian

5

Thank you, Ian

It worked it was so helpful :slight_smile:

  char buffer[100] 
    int x_angle = getData();
    sprintf(buffer,"https://datadrop.wolframcloud.com/api/v1.0/Add?bin=ID&x_angle=%d",x_angle);
  send(buffer);  //make request using buffer

Thanks

Ugur