Struggling with BluetoothCharacteristic.value

[thefakhreddin]

No description provided.

[thefakhreddin]

I'm trying to read data from a specific characteristic. I have already managed to read data using flutter_blue package. It has a similar class BluetoothCharacteristic with a similar attribute , value which returns Stream<List<int>>. The flutter_web_bluetooth package however returns Stream<ByteData> which I'm having difficulties reading from. Is there any neat way to convert the data type, Stream<ByteData> to Stream<List<int>> so that I can treat the data the same way I did previously with flutter_blue on Android and IOS?

This is what I already wrote with flutter_blue:

/// blue.Bluetooth is a BluetoothDevice object
blue.Bluetooth.readCharacteristic.value
          .timeout(Duration(seconds: 5))
          .firstWhere((d) {
        if (d.isNotEmpty) {
          if (d[0] == SOME_VAL) {
            if (d[1] <= 100) {
              setState(() => readingVal = d[1] / 100);
              return true;
            }
          }
        }
        return false;
      }, orElse: () => null);

This is what I tried with flutter_web_bluetooth:

blueWeb.Bluetooth.readCharacteristic.value
          .timeout(Duration(seconds: 5))
          .firstWhere((d) {
        /// trying to convert <ByteData> to List<int>
        List<int> dList = new List.from(
            d.buffer.asUint8List(d.offsetInBytes, d.lengthInBytes));
        if (dList.isNotEmpty) {
          if (dList[0] == SOME_VAL) {

            if (dList[1] <= 100) {
              setState(() => readingVal = dList[1] / 100);
              return true;
            }
          }
        }
        return false;
      }, orElse: () => null);

It wasn't successful though.

[jeroen1602]

You will only get a value from the stream if you use readValue or startNotifications​.

The startNotifications doesn't work in the latest version because of a typo. But if you get it from the git instead of from pub.dev it will work.