Use Peripheral and Central UART (NUS service) example with pairing

[Offox]

In both examples have the callback functions that It does the pairing process.

The nRF52840 doesn't have the security support enabled,. In this case Initiator / Responder of pairing were called No Imput / No Output, in this case Just Works and a connection works without authentication.

I try to define passkey_entry (Responder) and passkey_display (Initiator), but pairing doesn't work yet.

i don't understand what happendee. Please, can someonr help me?

[Sigurd Hellesvik]

Hi,

Our Bluetooth: Continuous Glucose Monitoring Service (CGMS) sample shows you how you can pair devices.

Does this show you what you need?

Regards,
Sigurd Hellesvik

[Offox]

Sigurd,

It needs to work change the GATT permitions fo NUS service.

Now the implemeted SMP callback funtions work.

I will send the changed code:

diff --git a/nus.c b/nus.c
index dc36b4c..a1d2dd3 100644
--- a/nus.c
+++ b/nus.c
@@ -60,13 +60,13 @@ BT_GATT_SERVICE_DEFINE(nus_svc,
BT_GATT_PRIMARY_SERVICE(BT_UUID_NUS_SERVICE),
BT_GATT_CHARACTERISTIC(BT_UUID_NUS_TX,
BT_GATT_CHRC_NOTIFY,
- BT_GATT_PERM_READ,
+ BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_READ_ENCRYPT,
NULL, NULL, NULL),
- BT_GATT_CCC(nus_ccc_cfg_changed, BT_GATT_PERM_READ | BT_GATT_PERM_WRITE),
+ BT_GATT_CCC(nus_ccc_cfg_changed, BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_WRITE_AUTHEN | BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT),
BT_GATT_CHARACTERISTIC(BT_UUID_NUS_RX,
BT_GATT_CHRC_WRITE |
BT_GATT_CHRC_WRITE_WITHOUT_RESP,
- BT_GATT_PERM_READ | BT_GATT_PERM_WRITE,
+ BT_GATT_PERM_READ_AUTHEN | BT_GATT_PERM_WRITE_AUTHEN | BT_GATT_PERM_READ_ENCRYPT | BT_GATT_PERM_WRITE_ENCRYPT,
NULL, on_receive, NULL),
);

Thanks for sharing the link with me! I will see and read your recommendation!