RE: DOMException: GATT operation not permitted.

Filip1122 — Tue, 10 Jan 2023 22:47:19 GMT

Looks like my issue was actually related to an incorrect UUID set in characteristic I had "10001111-0000-1000-8000-00805f9b34fb" and when changed to "10001000-0000-1000-8000-00805f9b34fb" it start working.

RE: DOMException: GATT operation not permitted.

Filip1122 — Tue, 10 Jan 2023 22:27:05 GMT

Looks like I have exactly the same problem. I am running the code in HTTPS, the code below

$(document).ready(function(){
    let bluetoothDevice = null;
    let requestDeviceParams = {
        filters: [
            {name: ["ko"]}
        ],
        optionalServices: ['10001001-0000-1000-8000-00805f9b34fb']
    }
   
    let name = document.querySelector('#date-input')
    $("#synch-date-time").click(() => {
        if (document.querySelector('#date-input').value === '') {
            console.error('empty date field, please fill the fields')
            return
        }
        asyncResultNotif();
    })



    async function asyncResultNotif(){
        return await navigator.bluetooth.requestDevice(requestDeviceParams)
        .then(device => {
            bluetoothDevice = device.gatt;
           
            return device.gatt.connect();
        })
        .then(server => {
            if (bluetoothDevice.connected) {
                return server.getPrimaryService('10001001-0000-1000-8000-00805f9b34fb');
            } else {
                console.log('cant connect to prime server')
            }
        })
        .then(service => {
            if (bluetoothDevice.connected) {
                return service.getCharacteristic('10001111-0000-1000-8000-00805f9b34fb'); // write one value
            } else {
                console.log('cant connect to characteristic')
            }
        })
        .then(characteristic => {
            if (bluetoothDevice.connected) {
                // const resetEnergyExpended = Uint8Array.of(1);
                // return characteristic.writeValue(resetEnergyExpended);
                let data = '{"ssid": "' +name.value
                    data +='"}'
                    console.log(data)
                let encoder = new TextEncoder('utf-8');
                let val = encoder.encode(data);
                // return characteristic.writeValue(val.buffer)
               
                return characteristic.writeValue(new Uint8Array([1]))
            } else {
                console.log('cant send message over BLE')
            }
        }). then(() => {
                if (bluetoothDevice.connected) {
                    bluetoothDevice.disconnect();
                    console.log('> Bluetooth Device now disconnected');
                } else {
                    console.log('> Bluetooth Device is already disconnected');
                }
        }).catch(error => {
            console.error('Argh! ' + error)
        });
    }
});

RE: DOMException: GATT operation not permitted.

Zheckiss — Sat, 10 Sep 2022 20:49:48 GMT

The way I understand Chrome, this means, that for some reason the Write bit for that characteristic isn't set? Argh! Please help! )