disable Passkey for HID keyboard

[alexandre trilles]

Good Morning,

I would like disable passkey in the example "peripherals_hids_keyboard". I am able to connect with differents hosts (2 smarts and i computer) but I'm having trouble finding it in the Kconfig how to disable passkey ?

I suppressed "CONFIG_BT_HIDS_DEFAULT_PERM_RW_ENCRYPT=y" but my smartphone always ask me PIN code?

below my prj.conf:

#

# Copyright (c) 2019 Nordic Semiconductor ASA

#

# SPDX-License-Identifier: LicenseRef-Nordic-5-Clause

#

CONFIG_NCS_SAMPLES_DEFAULTS=y

CONFIG_BT=y

CONFIG_BT_DEBUG_LOG=y

CONFIG_BT_MAX_CONN=3

CONFIG_BT_MAX_PAIRED=3

CONFIG_BT_L2CAP_TX_BUF_COUNT=5

CONFIG_BT_PERIPHERAL=y

CONFIG_BT_DEVICE_NAME="Nordic_HIDS_keyboard"

CONFIG_BT_DEVICE_APPEARANCE=961

CONFIG_BT_BAS=y

CONFIG_BT_HIDS=y

CONFIG_BT_GATT_UUID16_POOL_SIZE=40

CONFIG_BT_GATT_CHRC_POOL_SIZE=20

CONFIG_BT_CONN_CTX=y

CONFIG_BT_DIS=y

CONFIG_BT_DIS_PNP=y

CONFIG_BT_DIS_MANUF="NordicSemiconductor"

CONFIG_BT_DIS_PNP_VID_SRC=2

CONFIG_BT_DIS_PNP_VID=0x1915

CONFIG_BT_DIS_PNP_PID=0xEEEF

CONFIG_BT_DIS_PNP_VER=0x0100

CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048

CONFIG_BT_SETTINGS=y

CONFIG_FLASH=y

CONFIG_FLASH_PAGE_LAYOUT=y

CONFIG_FLASH_MAP=y

CONFIG_NVS=y

CONFIG_SETTINGS=y

CONFIG_DK_LIBRARY=y

CONFIG_BT_HIDS_MAX_CLIENT_COUNT=3

CONFIG_BT_SMP=y

Thank you for help

Alexandre

[dejans]

Hi,

You could modify source code by removing unnecessary lines form main.c file. Please remove the lines mentioned below

1. in pairing_process(), remove

char addr[BT_ADDR_LE_STR_LEN];

and

bt_addr_le_to_str(bt_conn_get_dst(pairing_data.conn),addr, sizeof(addr))
printk("Passkey for %s: %06u\n", addr, pairing_data.passkey);
printk("Press Button 1 to confirm, Button 2 to reject.\n");

2. completely remove definitions of auth_passkey_display(), auth_passkey_confirm() and auth_cancel()

3. in static struct bt_conn_auth_cb conn_auth_callbacks remove

.passkey_display = auth_passkey_display,
.passkey_confirm = auth_passkey_confirm,
.cancel = auth_cancel,

4. in num_comp_reply() remove

if (accept) {
bt_conn_auth_passkey_confirm(conn);
printk("Numeric Match, conn %p\n", conn);
} else {
bt_conn_auth_cancel(conn);
printk("Numeric Reject, conn %p\n", conn);
}

bt_conn_unref(pairing_data.conn);

if (k_msgq_num_used_get(&mitm_queue)) {
k_work_submit(&pairing_work);
}

Best regards,
Dejan