save data on MDBT42Q and send it to my device

[espruino-discuss]

Posted at 2020-04-27 by David1234321

Hello ,
Is there any way to save data on the MDBT42Q?
I running a scan to and want to save the resault ,
can I do this?
can I save the the data as txt file \ or even Json ,
and then send it to my phone ?(when I connect to it ,and assuming I have an app then can read JSON)?

Thanks ,

[gfwilliams]

Posted at 2020-04-27 by @gfwilliams

Yes - this might be a good start, there are some examples there: http://www.espruino.com/Data+Collection

[espruino-discuss]

Posted at 2020-04-27 by David1234321

I read it , and now I guess it "save" me the data.
3 questions:

1. what is the limit of sapce I can use for this ?

2. lest say the device work for 2 hours,I got 100 entries - then the battery is unplug.
   is the data saved somewhere? or it got lost?

3. let say that I want to transfer the data to my PI ,
   how do I do this?
   what do I need to write on the PI side ,in order to read the data and then delete the device log?

Thanks ,

[gfwilliams]

Posted at 2020-04-28 by @gfwilliams

is the data saved somewhere? or it got lost?

If you follow the instructions for RAM, it gets lost. If you follow the instruction for Flash, it isn't.

let say that I want to transfer the data to my PI

http://www.espruino.com/Data+Collection#extracting-data

You just need an app that'll read the CSV data output by that code and do something with it