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added xdata decoding for KNMI Tachometer #313

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Merged
darksidelemm merged 2 commits into from
Jan 31, 2024
Merged

added xdata decoding for KNMI Tachometer #313

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41b63a6
added xdata decoding for KNMI Tachometer
cixio Jan 31, 2024
7da2b20
code layout fix
cixio Jan 31, 2024
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38 changes: 35 additions & 3 deletions js/xdata.js
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Original file line number Diff line number Diff line change
Expand Up @@ -592,6 +592,37 @@ function parseSKYDEW(xdata) {
return _output
}

function parseKnmiTachometer(xdata) {
// KNMI Tachometer for Vaisala OIF411
//
// Sample data: 80022B5A1EE4001384A407F8 (length = 24 characters)

// Run some checks over the input
if(xdata.length != 24){
// Invalid dataset
return {};
}

if(xdata.substr(0,2) !== '80'){
// Not a KNMI Tachometer (shouldn't get here)
return {};
}

var _output = {};

// uptime (in seconds) of the arduino tachometer board
_output['tacho_uptime'] = (parseInt(xdata.substr(4,8),16) * 8 / 1000000).toFixed();

// time the Vaisala OIF411 motor needs to make 400 rounds
_delta = parseInt(xdata.substr(12,8),16) * 8 / 1000000;
_output['tacho_delta'] = _delta.toFixed(3);

// calculated rounds per second
_output['tacho_rps'] = (400 / _delta).toFixed(3);

return _output
}

function parseXDATA(data, pressure, temperature){
// Accept an XDATA string, or multiple XDATA entries, delimited by '#'
// Attempt to parse each one, and return an object
Expand Down Expand Up @@ -683,9 +714,10 @@ function parseXDATA(data, pressure, temperature){
// POPS
if (!_instruments.includes("POPS")) _instruments.push('POPS');
} else if (_instrument === '80'){
// Unknown!
//console.log("Saw unknown XDATA instrument 0x80.")
}else {
// KNMI Tachometer
_xdata_temp = parseKnmiTachometer(_current_xdata);
_output = Object.assign(_output,_xdata_temp);
} else {
// Unknown!

}
Expand Down