mkol5222

Most recent activity

• Particle Mesh | NRF52840

  in Porting to new Devices • 4 years, 10 months

  

  @Gordon I love flexibility of Espruino and how PuckJS enabled me to explore various scenarios. However next education and PoC goal for me would be mesh networks like BlueTooth Mesh and (Open)Thread.

  Are you getting closer to releasing nRF52840 (MDBT50Q?) board and bringing Nordic nRF mesh SDK features to Espruino JavaScript world, please?

• failing to read data pin based on clock pin with setWatch and digitalRead

  @mkol5222 started

  • 5 comments
  • 2,647 views

  @Gordon replied
• failing to read data pin based on clock pin with setWatch and digitalRead

  in Interfacing • 5 years, 10 months

  

  @Gordon and @Wilberforce Many thanks for quick response. Suggestion to use new setWatch functionality for reading data pin exactly resolved timing issues with data readings.

  I am amazed how Puck.JS and Espruino JavaScript approach makes prototyping so easy including making easy publishing of data via BLE GATT service. We have submitted order for additional Espruino gatgets to learn even more.

• failing to read data pin based on clock pin with setWatch and digitalRead

  in Interfacing • 5 years, 10 months

  

  Hello,
  I am trying to port Arduino C code to Puck.JS JavaScript
  and I think I have potential timing issue with use of setWatch on clock PIN
  to read data from data PIN similar to code below.

  Is it possible to find optimal solution to interpret my input PINs
  even with setWatch callback?
  I do not get consistent results reading the data and I am worried that
  only solution would be to have native code handling it?

  What I try to do - storing each data bit on clock edge to array (to be interpreted later)

  var req = 31; //mic REQ
  
  var dat = 1; //mic Data line
  
  var clk = 2; //mic Clock line
  
  var i = 0;
  var a=[];
  
  pinMode(clk, 'input_pullup');
  
  pinMode(dat, 'input_pullup');
  
  pinMode(clk, 'input_pullup');
  
  setWatch(function () {
          b = digitalRead(dat);
          if (i < 52) {
            a.push(b);
            i++;
          }
  
  
  }, clk, {
      edge: "rising",
      debounce: 0,
      repeat: true
  });
  

  Arduino code was similar to
  Arduino is using loop driven by CLK pin vs. Espruino based on JavaScript callback with set Watch for CLK edge...
  My HW is Puck.JS.

  void loop()
  { 
      digitalWrite(req, HIGH); // generate set request
      for (i = 0; i < 13; i++)
      {
          k = 0;
          for (j = 0; j < 4; j++)
          {
  
              while (digitalRead(clk) == LOW) {}
              while (digitalRead(clk) == HIGH) {}
              bitWrite(k, j, (digitalRead(dat) & 0x1)); // read data bits, and reverse order )
          }
          mydata[i] = k;
      }
  ...