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Temp_universal_mi_activate.html
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<!-- Copyright: Aaron Christophel / Atc1441 https://atcnetz.de -->
<html class="telFlasherClass"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Mi Activation</title>
<script type="text/javascript" src="./core.js"></script>
</head>
<body>
<script>
//BLE values
var bluetoothDevice, gattServer, Theservice, writeCharacteristic;
var ServiceMain, writeCharacteristicSpeed, nitifiyCharTemp, time_char, enc_main, enc_10, enc_19;
//Firmware values
var firmwareArray = "",
startTime = 0,
blockCount = 0;
//Connection values
var state = 0,
connectTrys = 0;
//Custom firmware
var customEnabled;
var settingsCharacteristics;
//Mi values
var miEnabled = false,
miConnected = false,
mode_activation;
//Login values
var mi_random_key, mi_random_key_recv, mi_device_info_recv, mi_device_info_send, device_known_id, expected_device_infos, is_logged_in = false;
//Activation values
var keypair, is_activated, own_public_key, device_public_key, shared_key, derived_key, mi_write_did;
var device_new_id = "00626c742e332e31323976" + makeRandomID(6) + "415443";
function resetVariables() {
busy = false;
gattServer = null;
Theservice = null;
writeCharacteristic = null;
miConnected = false;
is_logged_in = false;
}
function handleError(error) {
addLog(error);
resetVariables();
if (connectTrys < 5) {
connectTrys++;
addLog("Reconnect " + connectTrys + " from " + 5);
doConnect();
} else {
addLog("Something went wrong, to many reconnect's");
connectTrys = 0;
}
}
function onDisconnected() {
addLog('Disconnected.');
}
function connect() {
var deviceOptions = {
optionalServices: ['00010203-0405-0607-0809-0a0b0c0d1912', 'ebe0ccb0-7a0a-4b0c-8a1a-6ff2997da3a6', 0xfe95, 0x1f10],
acceptAllDevices: true,
};
const hideUnknown = document.getElementById('hideUnknown').checked;
const namePrefix = document.getElementById('namePrefix').value;
if (hideUnknown) {
deviceOptions.acceptAllDevices = false;
deviceOptions.filters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz"
.split("")
.map((x) => ({ namePrefix: x }));
}
if (namePrefix) {
deviceOptions.acceptAllDevices = false;
deviceOptions.filters = namePrefix.split(",")
.map((x) => ({ namePrefix: x }));
}
console.log(deviceOptions)
if (bluetoothDevice != null) bluetoothDevice.gatt.disconnect();
resetVariables();
addLog("Searching for devices");
connectTrys = 0;
navigator.bluetooth.requestDevice(deviceOptions).then(device => {
bluetoothDevice = device;
catchAdvertisement(device);
bluetoothDevice.addEventListener('gattserverdisconnected', onDisconnected);
addLog("Connecting to: " + bluetoothDevice.name);
doConnect();
}).catch(handleError);
}
function catchAdvertisement(device) {
const abortController = new AbortController();
device.addEventListener('advertisementreceived', (event) => {
console.log('Received advertisement from "' + device.name + '"...');
event.serviceData.forEach((valueDataView) => {
const buffer = new Uint8Array(valueDataView.buffer);
console.log(buffer, device, event);
if(device.name=='LYWSD03MMC'){
console.log('LYWSD03MMC MAC:',buffer[10].toString(16),buffer[9].toString(16),buffer[8].toString(16),buffer[7].toString(16),buffer[6].toString(16),buffer[5].toString(16));
document.getElementById("MAC").innerHTML = 'LYWSD03MMC MAC: ' + buffer[10].toString(16) + buffer[9].toString(16) + buffer[8].toString(16) + buffer[7].toString(16) + buffer[6].toString(16) + buffer[5].toString(16);
}
if(device.name.startsWith('ATC')){
console.log('ATC MAC:',buffer[0].toString(16),buffer[1].toString(16),buffer[2].toString(16),buffer[3].toString(16),buffer[4].toString(16),buffer[5].toString(16));
document.getElementById("MAC").innerHTML = 'ATC MAC: ' + buffer[0].toString(16) + buffer[1].toString(16) + buffer[2].toString(16) + buffer[3].toString(16) + buffer[4].toString(16) + buffer[5].toString(16);
}
else {
console.log('only LYWSD03MMC/ATC supported');
}
})
abortController.abort();
}, { once: true });
}
function miAction() {
miAuthorization();
}
function customAction() {
gattServer.getPrimaryService('00001f10-0000-1000-8000-00805f9b34fb')
.then(service => {
addClog("Found custom Main service");
ServiceMain = service;
return ServiceMain.getCharacteristic('00001f1f-0000-1000-8000-00805f9b34fb');
}).then(characteristic => {
addClog("Found custom write characteristic");
settingsCharacteristics = characteristic;
}).catch(handleError);
}
function miAuthorization() {
gattServer.getPrimaryService(0xfe95)
.then(service => {
addClog("Found Main service");
enc_main = service;
return enc_main.getCharacteristic(0x0010);
}).then(characteristic => {
addClog("Found enc_10 char");
enc_10 = characteristic;
return enc_main.getCharacteristic(0x0019);
}).then(characteristic => {
addClog('Found enc_19 char');
enc_19 = characteristic;
miConnected = true;
return enc_10.startNotifications().then(() => {
enc_10.addEventListener('characteristicvaluechanged', event => {
var value = bytesToHex(event.target.value.buffer);
addClog("Enc_10: " + value);
if (value == "12000000") {
addLog("Activation Failed!");
} else if (value == "11000000") {
addLog("Activation successfull");
sendLogin();
}
if (value == "23000000") {
addLog("Login Failed!");
} else if (value == "21000000") {
is_logged_in = true;
addLog("Login successfull");
}
});
}).then(characteristic => {
return enc_19.startNotifications().then(() => {
enc_19.addEventListener('characteristicvaluechanged', event => {
var value = bytesToHex(event.target.value.buffer);
addClog("Enc_19: " + value);
if (mode_activation == 1) {
if (value == "000000000100") {
is_activated = false;
mainCharSend("00000101", enc_19);
} else if (value == "000000000200") {
is_activated = true;
mainCharSend("00000101", enc_19);
} else if ((is_activated == true) && (state == 0) && value.substring(0, 4) == "0100") {
device_known_id = value.substring(4);
} else if ((is_activated == true) && (state == 0) && value.substring(0, 4) == "0200") {
device_known_id += value.substring(4);
device_new_id = device_known_id.substring(8);
document.getElementById("known_id").value = hex2ascii(device_known_id.substring(10));
mainCharSend("00000100", enc_19).then(function(character) {
mainCharSend("15000000", enc_10).then(function(character) {
mainCharSend("000000030400", enc_19);
state = 1;
}).catch(function(err) {
updateFail(err);
});
}).catch(function(err) {
updateFail(err);
});
} else if (value == "010001000000") mainCharSend("00000100", enc_19).then(function(character) {
mainCharSend("15000000", enc_10).then(function(character) {
mainCharSend("000000030400", enc_19);
state = 1;
}).catch(function(err) {
updateFail(err);
});
}).catch(function(err) {
updateFail(err);
});
else if ((state == 1) && (value == "00000101")) {
state = 2;
mainCharSend("0100" + own_public_key.substring((36 * 0) + 2, (36 * 0) + 36 + 2), enc_19).then(function(character) {
mainCharSend("0200" + own_public_key.substring((36 * 1) + 2, (36 * 1) + 36 + 2), enc_19).then(function(character) {
mainCharSend("0300" + own_public_key.substring((36 * 2) + 2, (36 * 2) + 36 + 2), enc_19).then(function(character) {
mainCharSend("0400" + own_public_key.substring((36 * 3) + 2, (36 * 3) + 36 + 2), enc_19);
}).catch(function(err) {
updateFail(err);
});
}).catch(function(err) {
updateFail(err);
});
}).catch(function(err) {
updateFail(err);
});
} else if (value == "000000030400") mainCharSend("00000101", enc_19);
else if ((state == 2) && value.substring(0, 4) == "0100") {
device_public_key = "04" + value.substring(4);
} else if ((state == 2) && value.substring(0, 4) == "0200") {
device_public_key += value.substring(4);
} else if ((state == 2) && value.substring(0, 4) == "0300") {
device_public_key += value.substring(4);
} else if ((state == 2) && value.substring(0, 4) == "0400") {
device_public_key += value.substring(4);
mainCharSend("00000100", enc_19).then(function(character) {
makeSharedKey();
}).catch(function(err) {
updateFail(err);
});
} else if ((state == 2) && (value == "00000101")) {
state = 3;
mainCharSend("0100" + mi_write_did.substring(36 * 0, (36 * 0) + 36), enc_19).then(function(character) {
mainCharSend("0200" + mi_write_did.substring(36 * 1, (36 * 1) + 36), enc_19);
}).catch(function(err) {
updateFail(err);
});
} else if ((state == 3) && (value == "00000100")) {
state = 0;
mainCharSend("13000000", enc_10);
} else if (value == "000001050100") {
addLog("Received Timeout from device");
} else if (value == "12000000") {
addLog("Register Failed!");
} else if (value == "11000000") {
addLog("Register successfull");
}
} else { //Mode Login
if ((state == 0) && (value == "00000101")) {
state = 1;
mainCharSend("0100" + mi_random_key, enc_19);
} else if ((state == 1) && (value == "0000000d0100")) {
state = 2;
mainCharSend("00000101", enc_19);
} else if ((state == 2) && value.substring(0, 4) == "0100") {
state = 3;
mi_random_key_recv = value.substring(4);
do_login_generate();
} else if ((state == 3) && (value == "0000000c0200")) {
state = 4;
mainCharSend("00000101", enc_19);
} else if ((state == 4) && value.substring(0, 4) == "0100") {
state = 5;
mi_device_info_recv = value.substring(4);
} else if ((state == 5) && value.substring(0, 4) == "0200") {
state = 6;
mi_device_info_recv += value.substring(4);
if (expected_device_infos == mi_device_info_recv)
addLog("Received device infos are correct");
else
addLog("Received device infos are not correct");
mainCharSend("00000100", enc_19).then(function(character) {
mainCharSend("0000000a0200", enc_19);
})
} else if ((state == 6) && (value == "00000101")) {
state = 7;
mainCharSend("0100" + mi_device_info_send.substring(36 * 0, (36 * 0) + 36), enc_19).then(function(character) {
mainCharSend("0200" + mi_device_info_send.substring(36 * 1, (36 * 1) + 36), enc_19);
}).catch(function(err) {
updateFail(err);
});
}
}
});
addLog("Connected");
setStatus("Connected, you can now Do the Activation to either get the Token or flash a new Firmware")
});
});
}).catch(handleError);
}
function doConnect() {
bluetoothDevice.gatt.connect().then(server => {
addClog("Found GATT server");
gattServer = server;
detectMi();
}).catch(handleError);
}
function detectMi() {
gattServer.getPrimaryServices().then(services => {
miEnabled = false;
customEnabled = false;
for (var i = 0; i < services.length; i++) {
console.log("Services: " + services[i].uuid);
miEnabled = true;
}
if (miEnabled) {
addLog("Detected Mi Thermometer");
setStatus("Detected Mi Thermometer");
miAction();
} else if (customEnabled) {
addLog("Detected custom Firmware");
setStatus("Detected custom Firmware");
customAction();
} else {
addLog("Connected");
setStatus("Connected")
}
}).catch(handleError);
}
function reConnect() {
if (bluetoothDevice != null) bluetoothDevice.gatt.disconnect();
resetVariables();
addLog("Reconnect");
connectTrys = 0;
doConnect();
}
function startDFU() {
addLog("Start DFU");
if ((miConnected==true) && (is_logged_in==false)){
addLog("Please do the Activation first");
return;
}
updateBegin();
}
function sendBLEdata(data) {
addLog(data);
}
function send10(data) {
mainCharSend(data, enc_10);
}
function send19(data) {
mainCharSend(data, enc_19);
}
function sendRegister() {
if (miConnected == false) {
addLog("Not connected");
return;
}
addLog("Activating now, please wait...");
state = 0;
mode_activation = 1;
doGenerate();
mainCharSend("a2000000", enc_10);
}
function sendLogin() {
mi_random_key = bytesToHex(window.crypto.getRandomValues(new Uint8Array(16)));
state = 0;
mode_activation = 0;
mainCharSend("24000000", enc_10).then(function(character) {
mainCharSend("0000000b0100", enc_19);
}).catch(function(err) {
updateFail(err);
});
}
function addLog(logTXT) {
var time = new Date().toLocaleTimeString("de-DE");
var logString = time + ": " + logTXT;
document.getElementById("log").innerHTML += logString + "<br>";
}
function addClog(logTXT) {
console.log(logTXT);
}
function clearLog() {
document.getElementById("log").innerHTML = "Log:<br>";
}
function setStatus(status) {
addClog("Status: " + status);
document.getElementById("percent").innerHTML = "Status: " + status;
}
function updateFail(err) {
addLog("Update error: " + err);
setStatus("Update error: " + err);
}
function decimalToHex(d, padding) {
var hex = Number(d).toString(16);
while (hex.length < 4) {
hex = "0" + hex;
}
return hex;
}
function hexToBytes(hex) {
for (var bytes = [], c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return new Uint8Array(bytes);
}
function bytesToHex(data) {
return new Uint8Array(data).reduce(function(memo, i) {
return memo + ("0" + i.toString(16)).slice(-2);
}, "");
}
function makeRandomID(length) {
var result = '';
var characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
var charactersLength = characters.length;
for (var i = 0; i < length; i++) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
}
return bytesToHex(new TextEncoder("utf-8").encode(result));
}
function crc16_modbus(buffer) {
var crc = 0xFFFF;
var odd;
for (var i = 0; i < buffer.length; i++) {
crc = crc ^ buffer[i];
for (var j = 0; j < 8; j++) {
odd = crc & 0x0001;
crc = crc >> 1;
if (odd) {
crc = crc ^ 0xA001;
}
}
}
return crc;
};
function hex2ascii(hexx) {
var hex = hexx.toString();
var str = '';
for (var i = 0;
(i < hex.length && hex.substr(i, 2) !== '00'); i += 2)
str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
return str;
}
window.onload = function() {
document.querySelector("#file").addEventListener("change", function() {
var reader = new FileReader();
reader.onload = function() {
firmwareArray = bytesToHex(this.result);
if(firmwareArray.substring(16,24)!="4b4e4c54"){
alert("Select file is no telink firmware .bin");
addLog("Select file is no telink firmware .bin");
blockCount = 0;
firmwareArray = "";
return;
}
addLog("File was selected, size: " + firmwareArray.length / 2 + " bytes");
if (firmwareArray.length % 32 !== 0) { // pad last block to 16bytes
var padHex = "ffffffffffffffffffffffffffffffff";
firmwareArray += padHex.substr(0, 32 - firmwareArray.length % 32);
}
blockCount = firmwareArray.length / 32;
addLog("Count: " + blockCount);
}
if (this.files[0] != null)
reader.readAsArrayBuffer(this.files[0]);
else
addLog("No file selected");
}, false);
}
function updateBegin() {
if (blockCount <= 0) {
addLog("No file selected aborting");
return;
}
if (miEnabled) mainCharSend("1e0000", writeCharacteristicSpeed); // this makes the upload faster
setTimeout(function() {
otaCharSend("00ff").then(function(character) {
otaCharSend("01ff").then(function(character) {
setTimeout(function() {
startTime = new Date().getTime();
sendOTAblock(0);
}, 300);
}).catch(function(err) {
updateFail(err);
});
}).catch(function(err) {
updateFail(err);
});
}, 500);
}
function sendOTAblock(blockNr) {
if (blockNr >= blockCount) {
sendLastOTA();
return;
}
setStatus("Sending block nr: " + blockNr + " from " + blockCount + ", " + Math.floor(blockNr / (blockCount * 1.0) * 100) + "% done, time since start " + (new Date().getTime() - startTime) / 1000.0 + "s");
var blockNrString = getHexBLockCount(blockNr);
var blockString = blockNrString + firmwareArray.substring(blockNr * 32, blockNr * 32 + 32);
var blockCRC = getHexCRC(blockString);
otaCharSend(blockString + blockCRC).then(function(character) {
setTimeout(function() {
if ((blockNr + 1) % 8 == 0) {
writeCharacteristic.readValue().then(function(result) {
addClog('reading OTA');
sendOTAblock(blockNr + 1);
}).catch(function(err) {
updateFail(err);
});
} else {
sendOTAblock(blockNr + 1);
}
}, 0);
}).catch(function(err) {
updateFail(err);
});
}
function getHexBLockCount(count) {
var tempHEX = decimalToHex(count);
return tempHEX.substring(2, 4) + tempHEX.substring(0, 2);
}
function getHexCRC(data) {
var tempCRC = decimalToHex(crc16_modbus(hexToBytes(data)));
return tempCRC.substring(2, 4) + tempCRC.substring(0, 2);
}
function sendLastOTA() {
var data = "02ff" + getHexBLockCount(blockCount - 1) + getHexBLockCount(~(blockCount - 1) & 0xffff);
otaCharSend(data).then(function(character) {
addLog("Update done after " + (new Date().getTime() - startTime) / 1000 + " seconds");
setStatus("Update done after " + (new Date().getTime() - startTime) / 1000 + " seconds");
}).catch(function(err) {
updateFail(err);
});
}
var otaCharSend = function(data) {
return new Promise(function(resolve, reject) {
addClog("OTA: " + data);
writeCharacteristic.writeValue(hexToBytes(data)).then(function(character) {
resolve("ok");
}).catch(function(err) {
reject("some error while sending char data");
});
});
}
function sendCustomSetting(data){
mainCharSend(data,settingsCharacteristics).then(function() {
addLog("Settings " + data + " was send successful");
}).catch(function(err) {
addLog("Error on sending setting " + data);
});
}
var mainCharSend = function(data, characteristic) {
return new Promise(function(resolve, reject) {
addClog("Send: " + data);
characteristic.writeValue(hexToBytes(data)).then(function(character) {
resolve("ok");
}).catch(function(err) {
reject("some error while sending char data");
});
});
}
function doGenerate() {
window.crypto.subtle.generateKey({
name: 'ECDH',
namedCurve: 'P-256'
}, false, ['deriveKey', 'deriveBits'])
.then(own_key => {
keypair = own_key
return window.crypto.subtle.exportKey('raw', own_key.publicKey);
})
.then(ownPublicKeyExported => {
own_public_key = bytesToHex(ownPublicKeyExported);
})
.catch(err => {
addLog(err);
});
}
function makeSharedKey() {
window.crypto.subtle.importKey('raw', hexToBytes(device_public_key), {
name: 'ECDH',
namedCurve: 'P-256'
}, true, [])
.then(device_key_imported => {
return window.crypto.subtle.deriveBits({
name: 'ECDH',
namedCurve: 'P-256',
public: device_key_imported
}, keypair.privateKey, 256)
})
.then(sharedSecret => {
shared_key = bytesToHex(sharedSecret);
deriveTheKey();
})
.catch(err => {
addLog(err)
})
}
function deriveTheKey() {
var derived_key = sjcl.codec.hex.fromBits(sjcl.misc.hkdf(sjcl.codec.hex.toBits(shared_key), 8 * 64, null, "mible-setup-info", sjcl.hash["sha256"]));
document.getElementById("mi_token").value = derived_key.substring(0, 24);
document.getElementById("mi_bind_key").value = derived_key.substring(24, 56);
var mi_bind_A = derived_key.substring(56, 88);
mi_write_did = sjcl.codec.hex.fromBits(sjcl.mode.ccm.encrypt(new sjcl.cipher.aes(sjcl.codec.hex.toBits(mi_bind_A)), sjcl.codec.hex.toBits(device_new_id), sjcl.codec.hex.toBits("101112131415161718191A1B"), sjcl.codec.hex.toBits("6465764944"), 32));
mainCharSend("000000000200", enc_19);
}
function do_login_generate() {
var salt = hexToBytes(mi_random_key + mi_random_key_recv);
var salt1 = hexToBytes(mi_random_key_recv + mi_random_key);
var derived_key = sjcl.codec.hex.fromBits(sjcl.misc.hkdf(sjcl.codec.hex.toBits(document.getElementById("mi_token").value), 8 * 64, sjcl.codec.hex.toBits(bytesToHex(salt)), "mible-login-info", sjcl.hash["sha256"]));
expected_device_infos = sjcl.codec.hex.fromBits(new sjcl.misc.hmac(sjcl.codec.hex.toBits(derived_key.substring(0, 32))).mac(sjcl.codec.hex.toBits(bytesToHex(salt1))));
mi_device_info_send = sjcl.codec.hex.fromBits(new sjcl.misc.hmac(sjcl.codec.hex.toBits(derived_key.substring(32, 64))).mac(sjcl.codec.hex.toBits(bytesToHex(salt))));
mainCharSend("00000100", enc_19);
}
</script>
<big><big>Telink Flasher for Mi Thermostat</big></big><br>
Copyright: Aaron Christophel / Atc1441 <a href="https://atcnetz.de">https://ATCnetz.de</a><br>
<a href="https://youtu.be/NXKzFG61lNs">Video Manual</a> <a href="https://github.com/atc1441/ATC_MiThermometer">Custom firmware repo</a><br><br>
<button type="button" onclick="connect();">Connect</button>
<button type="button" onclick="reConnect();">Reconnect</button><br>
<label for="hideUnknown">Hide unknown</label>
<input type="checkbox" id="hideUnknown"><br>
<label for="namePrefix">BLE device name prefix filter(s)</label>
<input type="text" id="namePrefix" value="" placeholder="LYWSD03,ATC"><br>
<button type="button" onclick="sendRegister();">Do Activation</button>
<button type="button" onclick="startDFU();">Start Flashing</button>
<button type="button" onclick="clearLog();">Clear Log</button><br><br>
Please select a .bin file you want to flash to a Telink BLE device.<br><br>
Select Firmware: <input type="file" accept=".bin" id="file"/><br>
<div id="percent">Status: waiting for you to connect a device</div><hr>
<div id="tempHumiData">Temp/Humi: waiting for data, this will not change on devices with custom firmware, only on stock firmware</div><hr>
<div id="MAC">#enable-experimental-web-platform-features may be needed to read MAC</div><hr>
Device known id:<br>
<input size="40" type="text" id="known_id" value=""><br>
Mi Token:<br>
<input size="40" type="text" id="mi_token" value=""><br>
Mi Bind Key:<br>
<input size="40" type="text" id="mi_bind_key" value=""><br>
<br>
When doing an activation here the device is needed to be activated in the Mi app again when wanted to use there.
<hr>
Send settings to custom firmware:<br>
<input type="text" id="cmdTXT" value="">
<button type="button" onclick="sendCustomSetting(document.getElementById("cmdTXT").value,settingsCharacteristics);">Send</button>
<br><br>
Smiley:
<button type="button" onclick="sendCustomSetting("A0");">Off</button>
<button type="button" onclick="sendCustomSetting("A1");">Happy</button>
<button type="button" onclick="sendCustomSetting("A2");">Sad</button>
<button type="button" onclick="sendCustomSetting("AB");">Blinking</button>
<button type="button" onclick="sendCustomSetting("A3");">Comfort Indicator</button>
<br><br>
Advertising Type:
<button type="button" onclick="sendCustomSetting("AE");">Custom</button>
<button type="button" onclick="sendCustomSetting("AF");">Mi Like</button>
<br><br>
Sensor display:
<button type="button" onclick="sendCustomSetting("CC");">In °C</button>
<button type="button" onclick="sendCustomSetting("FF");">In °F</button>
<br><br>
Show battery in LCD:
<button type="button" onclick="sendCustomSetting("B1");">Enabled</button>
<button type="button" onclick="sendCustomSetting("B0");">Disabled</button>
<br><br>
Advertising interval:
<button type="button" onclick="sendCustomSetting("FE01");">10 Seconds</button>
<button type="button" onclick="sendCustomSetting("FE06");">1 Minute</button>
<button type="button" onclick="sendCustomSetting("FE1E");">5 Minutes</button>
<button type="button" onclick="sendCustomSetting("FE3C");">10 Minutes</button>
<br><br>
Sensor offset:
<button type="button" onclick="sendCustomSetting("FA00");">Temp 0°C offset</button>
<button type="button" onclick="sendCustomSetting("FB00");">Humi 0% offset</button><br>
To set a precise offset use the text input field with FA+offset for Temp and FB+offset for Humiditiy convert an int8 to hex.
<br><br>
Sensor instant Advertising:
<button type="button" onclick="sendCustomSetting("FC05");">Temp 0,5°C instant alarm</button>
<button type="button" onclick="sendCustomSetting("FD05");">Humi 5% instant alarm</button><br>
To set other values use the text input with FC+temp alarm or FD+humi alarm with uint8_t values.
This can be used to get instant advertising if the sensor data changes to fast. Temp divided by 10
<br>
<hr>
<div id="log">Log:<br></div>
<div id="result"></div>
</body></html>