Sets or displays the filter that will be used for the GAP scan. The filter only accepts ASCII characters. After the filter is set, the scan will only display advertisements containing the text passed as a filter. To disable the filter, the user needs to set FG back to the default value of 0x20 (an ASCII space character).

Parameter range

A string of case-sensitive ASCII printable characters from 1 to 22 bytes in length.

Default

0x20 (an ASCII space character)