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Create getSignalBars(), add max/min RSSI constants

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This commit is contained in:
billz 2023-03-24 12:01:47 +01:00
parent 8be62bb811
commit 26bde30e95
1 changed files with 38 additions and 1 deletions
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39
includes/wifi_functions.php
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@ -2,6 +2,9 @@
require_once 'functions.php'; require_once 'functions.php';
const MIN_RSSI = -100;
const MAX_RSSI = -55;
function knownWifiStations(&$networks) function knownWifiStations(&$networks)
{ {
// Find currently configured networks // Find currently configured networks
@ -191,7 +194,41 @@ function reinitializeWPA($force)
* *
* @param string $ssid * @param string $ssid
*/ */
function ssid2utf8($ssid) { function ssid2utf8($ssid)
{
return evalHexSequence($ssid); return evalHexSequence($ssid);
} }
/*
* Returns a signal strength indicator based on RSSI value
*
* @param string $rssi
*/
function getSignalBars($rssi)
{
// assign css class based on RSSI value
if ($rssi >= MAX_RSSI) {
$class = 'strong';
} elseif ($rssi >= -56) {
$class = 'medium';
} elseif ($rssi >= -67) {
$class = 'weak';
} elseif ($rssi >= -89) {
$class = '';
}
// calculate percent strength
if ($rssi >= -50) {
$pct = 100;
} elseif ($rssi <= MIN_RSSI) {
$pct = 0;
} else {
$pct = 2*($rssi + 100);
}
$elem = '<div data-toggle="tooltip" title="Signal strength: ' .$pct. '%" class="signal-icon ' .$class. '">'.PHP_EOL;
for ($n = 0; $n < 3; $n++ ) {
$elem .= '<div class="signal-bar"></div>'.PHP_EOL;
}
$elem .= '</div>'.PHP_EOL;
return $elem;
}