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RSSI to Distance Conversion
function calculateDistance(rssi) {
var txPower = -59 //hard coded power value. Usually ranges between -59 to -65
if (rssi == 0) {
return -1.0;
}
var ratio = rssi*1.0/txPower;
if (ratio < 1.0) {
return Math.pow(ratio,10);
}
else {
var distance = (0.89976)*Math.pow(ratio,7.7095) + 0.111;
return distance;
}
}
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