Function nrf_softdevice_s140::sd_ble_gatts_descriptor_add

pub unsafe fn sd_ble_gatts_descriptor_add(
    char_handle: u16,
    p_attr: *const ble_gatts_attr_t,
    p_handle: *mut u16
) -> u32

@brief Add a descriptor to the Attribute Table.

@note It is currently only possible to add a descriptor to the last added characteristic (i.e. only sequential population is supported at this time).

@mscs @mmsc{@ref BLE_GATTS_ATT_TABLE_POP_MSC} @endmscs

@param[in] char_handle Handle of the characteristic where the descriptor is to be placed, if @ref BLE_GATT_HANDLE_INVALID is used, it will be placed sequentially. @param[in] p_attr Pointer to the attribute structure. @param[out] p_handle Pointer to a 16-bit word where the assigned handle will be stored.

@retval ::NRF_SUCCESS Successfully added a descriptor. @retval ::NRF_ERROR_INVALID_ADDR Invalid pointer supplied. @retval ::NRF_ERROR_INVALID_PARAM Invalid parameter(s) supplied, characteristic handle, Vendor Specific UUIDs, lengths, and permissions need to adhere to the constraints. @retval ::NRF_ERROR_INVALID_STATE Invalid state to perform operation, a characteristic context is required. @retval ::NRF_ERROR_FORBIDDEN Forbidden value supplied, certain UUIDs are reserved for the stack. @retval ::NRF_ERROR_NO_MEM Not enough memory to complete operation. @retval ::NRF_ERROR_DATA_SIZE Invalid data size(s) supplied, attribute lengths are restricted by @ref BLE_GATTS_ATTR_LENS_MAX.