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--- uphp:functions:ow_first [2017/05/11 09:58]
admin created
+++ uphp:functions:ow_first [2021/09/13 05:57]
@@ Line 1: / Line 1: @@
-======ow_first======
-<badge>WMPRO, WMMINI FW >= 1.0</badge> <badge>WMMEGA FW >= 2.0</badge>
-Start a new OneWire bus scan and return the first device
-====Description====
-<well size="sm"><html>
-<span style="font-size:125%;color:green">array
-<span style="color:black">ow_first (
-<span style="color:black">)
-</html></well>
-====Parameter====
-none
-====Return Values====
-An <html><b><span style="color:green">array<span style="color:black"></b></html> of 8 elements containing the unique onewire address.  Returns 0 if no devices were detected
-====Example====
-<code php>
-<pre><?
-  $arr=ow_first();
-  if ($arr) {
-    $devname=sprintf("%02X%02X%02X%02X%02X%02X%02X%02X",$dev[$i][0],$dev[$i][1],$dev[$i][2],$dev[$i][3],$dev[$i][4],$dev[$i][5],$dev[$i][6],$dev[$i][7]);
-    print("Detected Onewire device ".$devname);
-  } else print("No devices detected.");
-?>
-</code>
-====See Also====
-[[ow_next()]] - Get next Onewire device
-[[ow_read()]] - Read from onewire bus
-[[ow_read_temp()]] - Read a temperature from a device
-[[ow_reset()]] - Reset the onewire bus
-[[ow_write()]] - Write to onewire bus
-</html>

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