Melonator

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• Efficient data storage on Ruuvitag

  in Other Boards • 6 years, 5 months

  

  Cool. Thanks for the suggestions!

• Efficient data storage on Ruuvitag

  @Melonator started

  • 6 comments
  • 2,845 views

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• Efficient data storage on Ruuvitag

  in Other Boards • 6 years, 5 months

  

  On another slightly related track, Once I get values and store them to the RuuviTag, is there a way to move them to the internal storage of the raspberry pie? Or does the Espruino IDE have the capability to store data locally?

• Efficient data storage on Ruuvitag

  in Other Boards • 6 years, 5 months

  

  Thanks a lot, that really helps!

• Efficient data storage on Ruuvitag

  in Other Boards • 6 years, 5 months

  

  Hey, I'm not sure if this is the right place to ask but I'm having a problem combining two Espruino/JavaScript concepts on my RuuviTag sensor beacon and I was wondering if anyone here had any insight into the matter.
  Basically, I'm trying to use a variation of the program on this web page: [https://lab.ruuvi.com/temp-logger/]

  But I'm trying to modify it so that I can store a lot more values by lowering the precision and storing values that take up less space in the RuuviTag memory.
  For that purpose I found this Espruino method which supposedly lets you store sensor reading as 8 bit integers instead of 32 or 64 bit floats: [https://www.espruino.com/Data+Collection]
  Here is what I have right now:

  const period = 1000; // milliseconds (every 30 minutes)
  const length = 10; // number of records (for 100 hours / 4 days)
  
  var ruuvi = require("Ruuvitag");
  var records = new Int8Array(length);
  
  function log() {
    ruuvi.setEnvOn(true);
    if (records.unshift({time:getTime(),temp:ruuvi.getEnvData().temp}) > length){
      records.pop();
    }
    ruuvi.setEnvOn(false);
  }
  
  function getData() {
    records.forEach( function(d,i) {
      console.log(i+"\t"+ d.temp +"\t"+ (getTime()-d.time));
    });
  }
  
  ruuvi.setAccelOn(true);
  setInterval(log, period);
  

  When I upload and run this code it says this over and over:

  in function called from system
  Uncaught Error: Function "unshift" not found!
   at line 2 col 15
    if (records.unshift({time:getTime(),temp:ruuvi.getEnvData(...
                ^
  

  And when I type the getData() command into the left side while the program is running I get this:

  in function called from system
  >getData()
  0	undefined	NaN
  1	undefined	NaN
  2	undefined	NaN
  3	undefined	NaN
  4	undefined	NaN
  5	undefined	NaN
  6	undefined	NaN
  7	undefined	NaN
  8	undefined	NaN
  9	undefined	NaN
  =undefined
  

  Am I missing something about the code? Or is it harder than I think it is to log values that take up less space in the memory? I don't see any reason why the unshift function would not be found. If unshift won't work for this type of operation, is there something else that will?

• Trouble using the library for RuuviTag

  in Other Boards • 6 years, 6 months

  

  Perfect! Thanks a lot!

• Trouble using the library for RuuviTag

  @Melonator started

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• Trouble using the library for RuuviTag

  in Other Boards • 6 years, 6 months

  

  Hello there,

  I'm having an issue using Espruino Web IDE on a Raspberry Pi with the RuuviTag sensor. When I upload some code I found online to run the sensors on the RuuviTag device I get a screen that looks like the attached screenshot. It kind of looks like it isn't finding the necessary library. Does anyone know how to get past this issue?