PHP function to decode ruuvi ble advertisement data format 5

elventhor · January 10, 2024, 1:52pm

I was unable to find one so I created one.

elventhor/ruuvitag_decoder_php/blob/main/ruuvi.function.php

<?php
function _bin16dec($bin) {
    // converts 16bit binary number string to integer using two's complement
    $num = bindec($bin) & 0xFFFF; // only use bottom 16 bits
    if (0x8000 & $num) {
        $num = - (0x010000 - $num);
    }
    return $num;
} // Thanks: http://stackoverflow.com/a/16127799

function ruuvi($hex)
{

        // convert hex to binary
        $bin = hex2bin($hex);
  
        // https://www.php.net/manual/en/function.pack.php
        // https://github.com/ruuvi/ruuvi-sensor-protocols/blob/master/dataformat_05.md
  
        $dataArray = unpack("c1length/c1flags/c1flagvalue/c1payloadlength/H2type/H4manufacturer/c1format/H4temp/H4humi/H4pres/H4accx/H4accy/H4accz/H4power/c1movement/H4sequence/H12mac",$bin);

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