Confusion in Properties permission in the DA1469x_Custom_BLE_Service example

Hello Dialog,

我测试the examples "BLE_Central" and the "DA1469x_Custom_BLE_Service" to achieve some communication between the GATT client and server. In the custom service example, in the peripheral_task.c, there are two services defined with one and thee characteristics respectively. Here, I have set some random permissions for the characteristics of the both services. Please find the log file attached below.

yÐE@保佑中央应用程序开始保佑中央application started @ BLE Central application started @ BLE Central application started @ BLE Central application started handle_evt_gap_connected: conn_idx=0000 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=0x1800 start_h=0001 end_h=0007 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=0x1801 start_h=0008 end_h=0008 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=11111111-0000-0000-0000-111111111111 start_h=0009 end_h=000d handle_evt_gattc_discover_svc: conn_idx=0000 uuid=22222222-0000-0000-0000-222222222222 start_h=000e end_h=0016 handle_evt_gattc_discover_completed: conn_idx=0000 type=0 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a00 handle=0002 value_handle=0003 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a01 handle=0004 value_handle=0005 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a04 handle=0006 value_handle=0007 properties=02 (-R------) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_read_completed: conn_idx=0000 handle=0003 status=0 43 75 73 74 6f 6d 20 42 4c 45 20 53 65 72 76 69 Custom BLE Servi 63 65 ce handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=11111111-0000-0000-0000-000000000001 handle=000a value_handle=000b properties=22 (-R---I--) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2901 handle=000c handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2902 handle=000d handle_evt_gattc_discover_completed: conn_idx=0000 type=3 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000001 handle=000f value_handle=0010 properties=0a (-R-W----) handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000002 handle=0012 value_handle=0013 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000003 handle=0015 value_handle=0016 properties=02 (-R------) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2901 handle=0011 handle_evt_gattc_discover_completed: conn_idx=0000 type=3 status=0 handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2901 handle=0014 handle_evt_gattc_discover_completed: conn_idx=0000 type=3 status=0 handle_evt_gap_disconnected: conn_idx=0000 address=06:06:06:01:01:01 reason=8 handle_evt_gap_connected: conn_idx=0000 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=0x1800 start_h=0001 end_h=0007 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=0x1801 start_h=0008 end_h=0008 handle_evt_gattc_discover_svc: conn_idx=0000 uuid=11111111-0000-0000-0000-111111111111 start_h=0009 end_h=000d handle_evt_gattc_discover_svc: conn_idx=0000 uuid=22222222-0000-0000-0000-222222222222 start_h=000e end_h=0016 handle_evt_gattc_discover_completed: conn_idx=0000 type=0 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a00 handle=0002 value_handle=0003 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a01 handle=0004 value_handle=0005 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=0x2a04 handle=0006 value_handle=0007 properties=02 (-R------) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_read_completed: conn_idx=0000 handle=0003 status=0 43 75 73 74 6f 6d 20 42 4c 45 20 53 65 72 76 69 Custom BLE Servi 63 65 ce handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=11111111-0000-0000-0000-000000000001 handle=000a value_handle=000b properties=22 (-R---I--) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2901 handle=000c handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2902 handle=000d handle_evt_gattc_discover_completed: conn_idx=0000 type=3 status=0 handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000001 handle=000f value_handle=0010 properties=0a (-R-W----) handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000002 handle=0012 value_handle=0013 properties=02 (-R------) handle_evt_gattc_discover_char: conn_idx=0000 uuid=22222222-0000-0000-0000-000000000003 handle=0015 value_handle=0016 properties=02 (-R------) handle_evt_gattc_discover_completed: conn_idx=0000 type=2 status=0 handle_evt_gattc_discover_desc: conn_idx=0000 uuid=0x2901 handle=0011 handle_evt_gattc_discover_completed: conn_idx=0000 type=3 status=0

这些都是“许可特征s I have set.

const mcs_characteristic_config_t custom_service_1[] = { /* Initialized Characteristic Attribute */ CHARACTERISTIC_DECLARATION(11111111-0000-0000-0000-000000000001, CHARACTERISTIC_ATTR_VALUE_MAX_BYTES, CHAR_WRITE_PROP_DIS, CHAR_READ_PROP_DIS, CHAR_NOTIF_INDIC_EN, Initialized Characteristic, NULL, NULL, event_sent_cb), }; const mcs_characteristic_config_t custom_service_2[] = { CHARACTERISTIC_DECLARATION(22222222-0000-0000-0000-000000000001, CHARACTERISTIC_ATTR_VALUE_MAX_BYTES, CHAR_WRITE_PROP_EN, CHAR_READ_PROP_DIS, CHAR_NOTIF_NONE, Hello World, NULL, set_var_value_cb, NULL), CHARACTERISTIC_DECLARATION(22222222-0000-0000-0000-000000000002, CHARACTERISTIC_ATTR_VALUE_MAX_BYTES, CHAR_WRITE_PROP_DIS, CHAR_READ_PROP_EN, CHAR_NOTIF_NONE, Hello Dialog, get_var_value_cb, NULL, NULL), CHARACTERISTIC_DECLARATION(22222222-0000-0000-0000-000000000003, 0, CHAR_WRITE_PROP_DIS, CHAR_READ_PROP_DIS, CHAR_NOTIF_NONE, NULL, NULL, NULL, NULL), };

Please compare the permissions with attached output log. You can see that the properties for the only characteristic of the service 1 are printed as (-R---I--), even though I have disabled the Read property.

Coming to the second service characteristics, They are printed as (-R-W----), (-R------) and (-R------) for the three characteristics respectively which are in contrast with the permissions which I actually gave.

Only the second characteristc permissions of the second service is printed correctly according to what I gave.

I request you to investigate about why this happens and suggest me what can I do to avoid this conditions. This is very important for my application as I have to exchange data between the GATT client and the Server.

Thanks in advance.

Regards,

Prasanna