Kymvaris

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• Puck Controlling Puck - Troubleshooting Help

  @Kymvaris started

  • 6 comments
  • 1,450 views

  @Gordon replied
• Puck Controlling Puck - Troubleshooting Help

  in Puck.js, Pixl.js and MDBT42 • 3 years, 8 months

  

  Gordon -

  Works like a champ with the added delay. Here's the full code just for anybody looking to see it all together:

  // Are we busy?
  var busy = false;
  
  // The device, if we're connected
  var connected = false;
  
  // The 'tx' characteristic, if connected
  var txCharacteristic = false;
  
  // Function to call 'toggle' on the other Puck
  function sendToggle() {
    if (!busy) {
      busy = true;
      if (!connected) {
        NRF.requestDevice({ filters: [{ name: 'Puck.js ....' }] }).then(function(device) {
          return device.gatt.connect();
        }).then(function(d) {
          connected = d;
          console.log("Connected");
          return new Promise(r => setTimeout(r,500));
        }).then(function() {
          return connected.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e");
        }).then(function(s) {
          return s.getCharacteristic("6e400002-b5a3-f393-e0a9-e50e24dcca9e");
        }).then(function(c) {
          txCharacteristic = c;
          busy = false;
          // Now actually send the toggle command
          sendToggle();
        }).catch(function(e) {
          console.log("error: ", e);
          connected=false;
          digitalPulse(LED1, 1, 500); // light red if we had a problem
          busy = false;
          if (connected) connected.disconnect();
        });
      } else {
        txCharacteristic.writeValue("toggle()\n").then(function() {
          digitalPulse(LED2, 1, 500); // light green to show it worked
          busy = false;
        }).catch(function(e) {
          console.log("error: ", e);
          digitalPulse(LED1, 1, 500); // light red if we had a problem
          busy = false;
          if (connected) connected.disconnect();
        });
      }
    }
  }
  
  // Call sendToggle when the button is pressed
  setWatch(sendToggle, BTN, { edge:"rising", debounce:50, repeat: true });
  

  Thanks for the help!

• Puck Controlling Puck - Troubleshooting Help

  in Puck.js, Pixl.js and MDBT42 • 3 years, 8 months

  

  I am trying to implement the code in the example in this link: https://www.espruino.com/Puck.js+Controlling+Other+Pucks

  I have two Puck.js v1.0 running firmware 2v09. I flashed one with the "peripheral" code and saved it to flash before disconnecting from the Web IDE and power-cycling the Puck. I flashed the other with the "central" code with a few added debug statements in the catch blocks to print out the error.

  When I press the button on the central puck, my the LED flashes red to indicate error and the error is printed to the console: BLE error 0x11 (BUSY). After that, any button presses just report the error "No device found matching filters" until I power-cycle the peripheral Puck. I assume my central puck is successfully connecting but not disconnecting when the error is caught (even though I call the disconnect()) function. This leaves the peripheral Puck in an odd state that can only be fixed with a power-cycle.

  My question is twofold:
  1) Where am I going wrong with the sample code (in the link above) because my peripheral Puck is always busy?
  2) How can I disconnect cleanly on error so I don't have to power-cycle my peripheral Puck every time?

  Since I modified the example code (to add debug statements in the catch() blocks), here is my code:

  // Are we busy?
  var busy = false;
  
  // The device, if we're connected
  var connected = false;
  
  // The 'tx' characteristic, if connected
  var txCharacteristic = false;
  
  // Function to call 'toggle' on the other Puck
  function sendToggle() {
    if (!busy) {
      busy = true;
      if (!connected) {
        NRF.requestDevice({ filters: [{ name: 'Puck.js ....' }] }).then(function(device) {
          return device.gatt.connect();
        }).then(function(d) {
          connected = d;
          return d.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e");
        }).then(function(s) {
          return s.getCharacteristic("6e400002-b5a3-f393-e0a9-e50e24dcca9e");
        }).then(function(c) {
          txCharacteristic = c;
          busy = false;
          // Now actually send the toggle command
          sendToggle();
        }).catch(function(e) {  
          console.log("error: ", e);
          connected=false;
          digitalPulse(LED1, 1, 500); // light red if we had a problem
          busy = false;
          if (connected) connected.disconnect();
        });
      } else {
        txCharacteristic.writeValue("toggle()\n").then(function() {
          digitalPulse(LED2, 1, 500); // light green to show it worked
          busy = false;
        }).catch(function(e) {
          console.log("error: ", e);
          digitalPulse(LED1, 1, 500); // light red if we had a problem
          busy = false;
          if (connected) connected.disconnect();
        });
      }
    }
  }
  
  // Call sendToggle when the button is pressed
  setWatch(sendToggle, BTN, { edge:"rising", debounce:50, repeat: true });
  

  As additional information, the example code in the following documentation articles also fails with a BLE error 0x11 (BUSY) message.

  1. https://www.espruino.com/Reference#l_NRF_requestDevice
     
  2. https://www.espruino.com/Reference#t_l_NRF_connect
     
     

  The sample code in the documentation here: https://www.espruino.com/Reference#t_BluetoothDevice does execute without error. This is leading me to believe that my two Pucks can connect to each other but when I try to use the UART service to send commands, the BLE error 0x11 (BUSY) error is thrown.