BLE security

[Kingmaster]

Hello,

Using BLE Scanner app (available for Android), i'm able to change the device name. I can also write other values for each characteristic.

How can we protect a BLE Network from Writing ? (Read only)

Thanks.

[RK]

Change the flags on the characteristics' meta data character properties to only have 'read', you can also set the security mode for write to 'no access'

// configure the characteristic metadata - everything is readable only
char_md.char_props.read = 1;

// configure the attribute metadata
BLE_GAP_CONN_SEC_MODE_SET_OPEN( &attr_md.read_perm ); 
BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS( &attr_md.write_perm );