ayoganandan1984

Most recent activity

• Flashing puck firmware fails

  @ayoganandan1984 started

  • 2 comments
  • 1,357 views

  @Gordon replied
• Flashing puck firmware fails

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  Hello,

  I'm trying to flash v203 firmware and get a "Error:Data object does not match the firmware and hardware requirements, the signature is wrong, or parsing the command failed"
  I tried 3 different puck.js microcontrollers and flashing fails on all 3 and the board is stuck with blue LED on.
  Any recommendations on how to overcome this issue?

• BLE HID already sending

  @ayoganandan1984 started

  • 5 comments
  • 2,064 views

  @Gordon replied
• BLE HID already sending

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  Hi Gordon,

  Thank you very much for your reply. I appreciate it.
  When I started the project, I was using setWatch, but the latency between when I press the button and when I receive the callback was in the order of seconds and made it unusable for my purpose. That is why I moved to checking button state in an interval. Is there a way to reduce the latency of the callback?

  Setting NRF.setConnectionInterval(7.5) seems to help a bit, but the error still shows up less frequently than before.

  Thanks for the queue idea. I will give that a shot.

• BLE HID already sending

  in Puck.js, Pixl.js and MDBT42 • 5 years, 7 months

  

  Hello,

  I have hooked up a button to my puck.js and emulating HID keyboard clicks on the button press. It works fine for the most part, except once in a few times, it misses sending a key press over with the a 'BLE HID already sending' error.

  error messageBLE HID already sending
  error messageBLE HID already sending
  Uncaught Error: BLE HID already sending
  at line 1 col 55
  NRF.sendHIDReport([0,0,0,0,0,0,0,0],function(){a&&a()})

                                                    ^
  

  in function called from system

  Looks like some of them get past the try-catch but others don't.

  This happens even if I'm doing these button presses slowly, so it is not an issue of too many button presses going through in a short time frame. Does the port need to be flushed or something?

  I tried upgrading to 2v02.6 cutting edge firmware, but the problem still exists.

  The essence of my code can be found below.

  var kb = require("ble_hid_keyboard");
  NRF.setServices(undefined, { hid : kb.report });
  
  var lastButtonState = 0;
  var busy = 0;
  
  function on_button_pressed() {
  
    var currentButtonState = digitalRead(D28);
    
    if ( currentButtonState === 0) {
      digitalWrite(LED1,0);
    }
    else if (currentButtonState === 1) {
      digitalWrite(LED1,1);
    }
    
    if(lastButtonState !== currentButtonState){
  
        digitalWrite(LED2, 1);
        lastButtonState = currentButtonState;
      
        try{
          
            if(!busy){
              busy = 1;
              if(lastButtonState === 0){
                kb.tap(kb.KEY.B, 0, function(){});
              }else if(lastButtonState === 1){
                kb.tap(kb.KEY.A, 0, function(){});
              }
              busy = 0;
            }
          
        }catch(err){
          console.log("error message " + err.message);
          busy = 0;
        }
      
    }else{
      
        digitalWrite(LED2, 0);
      
      
    }
  }
  
  setInterval(function() {
    on_button_pressed();
  }, 5);