how to make the characteristics can be write by the smartphone and how know the characteristics was written by the smartphone?https://devzone.nordicsemi.com/f/nordic-q-a/474/how-to-make-the-characteristics-can-be-write-by-the-smartphone-and-how-know-the-characteristics-was-written-by-the-smartphonehi i have added new characteristics on a existing service,and i do not know how to make this characteristics can be change by the smartphone and how to know this characteristics are changed by the smartphone. the characteristics i added as showeden-USTelligent Community 13Tue, 17 Sep 2013 03:28:33 GMTRE: how to make the characteristics can be write by the smartphone and how know the characteristics was written by the smartphone?https://devzone.nordicsemi.com/thread/2486?ContentTypeID=1Tue, 17 Sep 2013 03:28:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c00684b3-a468-48bd-a3b8-3639d24ef003andy2003hunan<p>Dear Nordic,could you help me?tks!</p><div style="clear:both;"></div>RE: how to make the characteristics can be write by the smartphone and how know the characteristics was written by the smartphone?https://devzone.nordicsemi.com/thread/2485?ContentTypeID=1Mon, 16 Sep 2013 05:58:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:70bb567f-38d4-47ef-bb8b-1abf6c739d28andy2003hunan<p>more question,the variables named ble_gatts_char_md_t char_md ble_gatts_attr_md_t cccd_md ble_gatts_attr_md_t attr_md what are they for?and what are their differences and relationship?</p><div style="clear:both;"></div>