Honeywell ActivLink Data Frame Generator

index.html

<h1>Honeywell ActivLink Data Frame</h1>

<label>KEY ID (different for each transmitter) </label><input id="hw_id" value="ABCDE"><br>
<label>DEVICE TYPE</label>
<select id="hw_type">
	<option value="10">Doorbell</option>
	<option value="01">PIR Motion sensor</option>
</select><br>
<label>ALERT</label>
<select id="hw_alert">
	<option value="00">normal</option>
	<option value="01">right-left halo light pattern</option>
	<option value="10">right-left halo light pattern (alt)</option>
	<option value="11">full volume alarm</option>
</select><br>
<label>SECRET KNOCK (0 = default, 1 if doorbell is pressed 3x rapidly)</label><input type="checkbox" id="hw_secretknock"></input><br>
<label>RELAY (1 if signal is a retransmission of a received transmission, only some models)</label><input type="checkbox" id="hw_relay"></input><br>
<label>FLAG UNKNOWN (0 = default, but 1 is accepted and I don't observe any effects)</label><input type="checkbox" id="hw_flagunknown"></input><br>
<label>LOWBAT (1 if battery is low, receiver gives low battery alert)</label><input type="checkbox" id="hw_lowbatt"></input><br>
<button onclick="generate()">Generate</button><br>

<span id="hw_output"></span>

<script>
function hex2bin(hex){
    return (parseInt(hex, 16).toString(2)).padStart(8, '0');
}
function pad(num, size) {
    num = num.toString();
    while (num.length < size) num = "0" + num;
    return num;
}

function generate()
{
	const output = document.getElementById('hw_output');
	let dataFrameBin = hex2bin(document.getElementById('hw_id').value);
	// Key unknown
	dataFrameBin += "000000";
	dataFrameBin += document.getElementById("hw_type").value;
	
	// More unknown data
	dataFrameBin += "0000000000";
	dataFrameBin += document.getElementById("hw_alert").value;

	// More unknown data
	dataFrameBin += "000";
	if (document.getElementById("hw_secretknock").checked)
		dataFrameBin += 1;
	else
		dataFrameBin += 0;

	if (document.getElementById("hw_relay").checked)
		dataFrameBin += 1;
	else
		dataFrameBin += 0;

	if (document.getElementById("hw_flagunknown").checked)
		dataFrameBin += 1;
	else
		dataFrameBin += 0;

	if (document.getElementById("hw_lowbatt").checked)
		dataFrameBin += 1;
	else
		dataFrameBin += 0;

	let oneCount = dataFrameBin.replaceAll('0', '').length;
	let lsb = parseInt(oneCount, 2) & 1
	dataFrameBin += lsb;

	let dataFrame = parseInt(dataFrameBin, 2).toString(16).toUpperCase();
	dataFrame = pad(dataFrame, 12);

	output.textContent = dataFrame;
}
</script>

Direct use link: https://htmlpreview.github.io/?https://gist.githubusercontent.com/DOCaCola/83e6aa26f37915cd290202be5f158702/raw/72107dee368e1280bf50475a7c73aa593450150a/index.html

Based on https://github.com/klohner/honeywell-wireless-doorbell to easily generate a data frame for the Honeywell ActivLink protocol.
Discussed here (german): https://forum.fhem.de/index.php/topic,130271.0.html