Engineer

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• ESP32 DevKit WIFI+BLE / BLE connect problem / ERROR: new parameter in esp_ble_gattc_open ???

  @Engineer started

  • 5 comments
  • 3,610 views

  @MaBe replied
• BLE NRF.setServices() string UUID Error

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  • 1 comment
  • 1,362 views

  @Engineer replied
• BLE NRF.setServices() string UUID Error

  in ESP32 • 6 years, 1 month

  

  ESP32 WROOM-32 Dev Kit | firmware v2.00
  Using string UUID (16bit or 128bit representation) throws an error ERROR: empty UUID type. Integers between 0 and 0xFFFF works fine.

  NRF.setServices() docs note: UUIDs can be integers between 0 and 0xFFFF, strings of the form "ABCD", or strings of the form "ABCDABCD-ABCD-ABCD-ABCD-ABCDABCDABCD"

  NRF.setServices({
    "81b38ab0-908a-4c40-8f29-b19ed4524599" : {
      "81b38ab1-908a-4c40-8f29-b19ed4524599" : {
        value : 0x01,
        readable : true,
        writable : true,
        description: "Param1",
        onWrite : e => {
          console.log("P1 got: ", e.data);
        }
      },
      "81b38ab2-908a-4c40-8f29-b19ed4524599" : {
        value : 0x02,
        readable : true,
        writable : true,
        description: "Param2",
        onWrite : e => {
          console.log("P2 got: ", e.data);
        }
      },
      "81b38ab3-908a-4c40-8f29-b19ed4524599" : {
        value : 0x03,
        readable : true,
        writable : true,
        description: "Param3",
        onWrite : e => {
          console.log("P3 got: ", e.data);
        }
      }
    }
  });
  

• ESP32 BLE NRF.setAdvertising() -> FIXME

  in ESP32 • 6 years, 1 month

  

  Thanks Gordon for reply. I thought that I did something wrong because I could not find my esp32 with NRF Connect. But the thing was that I looked for MAC that I got from NRF.getAddress() -> "de:ad:de:ad:de:ad". In fact esp32 advertising with MAC from getSerial() -> "30aea488-a16c" -> 30:ae:a4:88:a1:6c.
  I just trying esp32, that is not mine by the way :), as starting point. So if I'll start some serious project I'll definitely buy one of your official boards to have more reliable BLE support and help the Espruino Project. But I can't afford it now.

• ESP32 BLE NRF.setAdvertising() -> FIXME

  @Engineer started

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• ESP32 DevKit WIFI+BLE WebServer POST problem

  in ESP32 • 6 years, 1 month

  

  I've tested some code without .end(). It eats memory and crashes like I described above.
  Gordon, Wilberforce thank you for help!

• ESP32 DevKit WIFI+BLE WebServer POST problem

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  • 8 comments
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  @Engineer replied
• ESP32 BLE NRF.setAdvertising() -> FIXME

  in ESP32 • 6 years, 1 month

  

  Hi everyone! Can anyone tell what I'm doing wrong?
  Code below returns:
  >FIXME WARNING: check error not implemented yet:0
  and sometimes:
  WARNING: update connetion params status = 0, min_int = 0, max_int = 0,conn_int = 6,latency = 0, timeout = 500

  setInterval(function() {
    NRF.setAdvertising({
      0x1809 : [95]
    });
  }, 3000);
  

  Firmware espruino_2v00_esp32 and espruino_2v00.90_esp32

• ESP32 DevKit WIFI+BLE WebServer POST problem

  in ESP32 • 6 years, 2 months

  

  Sorry, I can't post that code. I have deleted it. I believe that I didn't use .end(). So it can be the reason.
  Though there is a part of new code that works fine now:

  // On POST Request Handler
  function onPOST(req, res) {
    let data = '';
    req.on('data', d => data += d);
    req.on('end', () => {
      try {
        let obj = JSON.parse(data);
        mod = obj.mode;
        res.writeHead(200, { 'Content-Type': 'text/plain' });
        res.end('Mode Set');
      } catch (err) {
        res.writeHead(200, { 'Content-Type': 'text/plain' });
        res.end(`Error: ${err}`);
      }
    });
  }
  

• ESP32 DevKit WIFI+BLE WebServer POST problem

  in ESP32 • 6 years, 2 months

  

  Wilberforce
  Can you post your code?

  I've found what is the source of problem. If you don't put callback function (as in example below) into POST handler your memory usage increases with every POST request and program after a while crashed. With such callback everything works now, I think :)

  // This handles any received data from the POST request
  function handlePOST(req, callback) {
    var data = "";
    req.on('data', function(d) { data += d; });
    req.on('end', function() {
      // All data received from the client, so handle the url encoded data we got
      // If we used 'close' then the HTTP request would have been closed and we
      // would be unable to send the result page.
      postData = {};
      data.split("&").forEach(function(el) {
        var els = el.split("=");
        postData[els[0]] = decodeURIComponent(els[1]);
      });
      // finally our data is in postData
      console.log(postData);
      // do stuff with it!
      console.log("We got sent the text ", postData.mytext);
      digitalWrite(LED1, postData.led1);
      digitalWrite(LED2, postData.led2);
      // call our callback (to send the HTML result)
      callback();
    });
  }