Struct AddDescriptorParameters

pub struct AddDescriptorParameters<'a> {
    pub service_handle: AttributeHandle,
    pub characteristic_handle: AttributeHandle,
    pub descriptor_uuid: Uuid,
    pub descriptor_value_max_len: usize,
    pub descriptor_value: &'a [u8],
    pub security_permissions: DescriptorPermission,
    pub access_permissions: AccessPermission,
    pub gatt_event_mask: CharacteristicEvent,
    pub encryption_key_size: EncryptionKeySize,
    pub is_variable: bool,
}

Parameters for the GATT Add Characteristic Descriptor command.

Fields

service_handle: AttributeHandle

Handle of the service to which characteristic belongs.

characteristic_handle: AttributeHandle

Handle of the characteristic to which description is to be added.

descriptor_uuid: Uuid

UUID of the characteristic descriptor.

See KnownDescriptor for some useful descriptors. This value is not restricted to the known descriptors, however.

descriptor_value_max_len: usize

The maximum length of the descriptor value.

descriptor_value: &'a [u8]

Current Length of the characteristic descriptor value.

security_permissions: DescriptorPermission

What security requirements must be met before the descriptor can be accessed.

access_permissions: AccessPermission

What types of access are allowed for the descriptor.

gatt_event_mask: CharacteristicEvent

Which types of events will be generated when the attribute is accessed.

encryption_key_size: EncryptionKeySize

The minimum encryption key size requirement for this attribute.

is_variable: bool

If true, the attribute has a variable length value field. Otherwise, the value field length is fixed.