d748d8a749
Replace deprecated key names (LCTL, NUM_0, NUM_1). Replace abbreviated names with fully qualified names (LCTL, RGUI, NUM_0, NUM_1). Follow-up to #21.
596 lines
19 KiB
C
596 lines
19 KiB
C
/*
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* Copyright (c) 2020 The ZMK Contributors
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*
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* SPDX-License-Identifier: MIT
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*/
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#include <device.h>
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#include <init.h>
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#include <math.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <settings/settings.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/conn.h>
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#include <bluetooth/hci.h>
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#include <bluetooth/uuid.h>
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#include <bluetooth/gatt.h>
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#include <bluetooth/hci_err.h>
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#if IS_ENABLED(CONFIG_SETTINGS)
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#include <settings/settings.h>
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#endif
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#include <logging/log.h>
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LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
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#include <zmk/ble.h>
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#include <zmk/keys.h>
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#include <zmk/split/bluetooth/uuid.h>
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#include <zmk/event-manager.h>
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#include <zmk/events/ble-active-profile-changed.h>
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static struct bt_conn *auth_passkey_entry_conn;
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static u8_t passkey_entries[6] = {0, 0, 0, 0, 0, 0};
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static u8_t passkey_digit = 0;
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL)
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#define PROFILE_COUNT (CONFIG_BT_MAX_PAIRED - 1)
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#else
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#define PROFILE_COUNT CONFIG_BT_MAX_PAIRED
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#endif
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enum advertising_type {
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ZMK_ADV_NONE,
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ZMK_ADV_DIR,
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ZMK_ADV_CONN,
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} advertising_status;
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#define CURR_ADV(adv) (adv << 4)
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#define ZMK_ADV_CONN_NAME \
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BT_LE_ADV_PARAM(BT_LE_ADV_OPT_CONNECTABLE | BT_LE_ADV_OPT_ONE_TIME, BT_GAP_ADV_FAST_INT_MIN_2, \
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BT_GAP_ADV_FAST_INT_MAX_2, NULL)
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static struct zmk_ble_profile profiles[PROFILE_COUNT];
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static u8_t active_profile;
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#define DEVICE_NAME CONFIG_BT_DEVICE_NAME
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#define DEVICE_NAME_LEN (sizeof(DEVICE_NAME) - 1)
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static const struct bt_data zmk_ble_ad[] = {
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#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
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BT_DATA(BT_DATA_NAME_COMPLETE, DEVICE_NAME, DEVICE_NAME_LEN),
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BT_DATA_BYTES(BT_DATA_GAP_APPEARANCE, 0xC1, 0x03),
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#endif
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BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
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BT_DATA_BYTES(BT_DATA_UUID16_SOME,
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#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
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0x12, 0x18, /* HID Service */
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#endif
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0x0f, 0x18 /* Battery Service */
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),
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
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BT_DATA_BYTES(BT_DATA_UUID128_ALL, ZMK_SPLIT_BT_SERVICE_UUID)
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#endif
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};
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL)
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static bt_addr_le_t peripheral_addr;
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#endif /* IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL) */
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static void raise_profile_changed_event() {
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struct ble_active_profile_changed *ev = new_ble_active_profile_changed();
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ev->index = active_profile;
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ev->profile = &profiles[active_profile];
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ZMK_EVENT_RAISE(ev);
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}
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static void raise_profile_changed_event_callback(struct k_work *work) {
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raise_profile_changed_event();
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}
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K_WORK_DEFINE(raise_profile_changed_event_work, raise_profile_changed_event_callback);
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static bool active_profile_is_open() {
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return !bt_addr_le_cmp(&profiles[active_profile].peer, BT_ADDR_LE_ANY);
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}
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void set_profile_address(u8_t index, const bt_addr_le_t *addr) {
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char setting_name[15];
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char addr_str[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(addr, addr_str, sizeof(addr_str));
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memcpy(&profiles[index].peer, addr, sizeof(bt_addr_le_t));
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sprintf(setting_name, "ble/profiles/%d", index);
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LOG_DBG("Setting profile addr for %s to %s", log_strdup(setting_name), log_strdup(addr_str));
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settings_save_one(setting_name, &profiles[index], sizeof(struct zmk_ble_profile));
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raise_profile_changed_event();
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}
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bool zmk_ble_active_profile_is_connected() {
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struct bt_conn *conn;
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bt_addr_le_t *addr = zmk_ble_active_profile_addr();
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if (!bt_addr_le_cmp(addr, BT_ADDR_LE_ANY)) {
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return false;
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} else if ((conn = bt_conn_lookup_addr_le(BT_ID_DEFAULT, addr)) == NULL) {
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return false;
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}
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bt_conn_unref(conn);
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return true;
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}
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#define CHECKED_ADV_STOP() \
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err = bt_le_adv_stop(); \
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advertising_status = ZMK_ADV_NONE; \
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if (err) { \
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LOG_ERR("Failed to stop advertising (err %d)", err); \
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return err; \
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}
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#define CHECKED_DIR_ADV() \
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addr = zmk_ble_active_profile_addr(); \
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conn = bt_conn_lookup_addr_le(BT_ID_DEFAULT, addr); \
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if (conn != NULL) { /* TODO: Check status of connection */ \
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LOG_DBG("Skipping advertising, profile host is already connected"); \
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bt_conn_unref(conn); \
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return 0; \
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} \
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err = bt_le_adv_start(BT_LE_ADV_CONN_DIR_LOW_DUTY(addr), zmk_ble_ad, ARRAY_SIZE(zmk_ble_ad), \
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NULL, 0); \
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if (err) { \
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LOG_ERR("Advertising failed to start (err %d)", err); \
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return err; \
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} \
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advertising_status = ZMK_ADV_DIR;
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#define CHECKED_OPEN_ADV() \
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err = bt_le_adv_start(ZMK_ADV_CONN_NAME, zmk_ble_ad, ARRAY_SIZE(zmk_ble_ad), NULL, 0); \
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if (err) { \
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LOG_ERR("Advertising failed to start (err %d)", err); \
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return err; \
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} \
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advertising_status = ZMK_ADV_CONN;
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int update_advertising() {
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int err = 0;
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bt_addr_le_t *addr;
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struct bt_conn *conn;
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enum advertising_type desired_adv = ZMK_ADV_NONE;
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if (active_profile_is_open()) {
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desired_adv = ZMK_ADV_CONN;
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} else if (!zmk_ble_active_profile_is_connected()) {
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desired_adv = ZMK_ADV_CONN;
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// Need to fix directed advertising for privacy centrals. See
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// https://github.com/zephyrproject-rtos/zephyr/pull/14984 char
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// addr_str[BT_ADDR_LE_STR_LEN]; bt_addr_le_to_str(zmk_ble_active_profile_addr(), addr_str,
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// sizeof(addr_str));
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// LOG_DBG("Directed advertising to %s", log_strdup(addr_str));
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// desired_adv = ZMK_ADV_DIR;
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}
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LOG_DBG("advertising from %d to %d", advertising_status, desired_adv);
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switch (desired_adv + CURR_ADV(advertising_status)) {
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case ZMK_ADV_NONE + CURR_ADV(ZMK_ADV_DIR):
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case ZMK_ADV_NONE + CURR_ADV(ZMK_ADV_CONN):
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CHECKED_ADV_STOP();
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break;
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case ZMK_ADV_DIR + CURR_ADV(ZMK_ADV_DIR):
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case ZMK_ADV_DIR + CURR_ADV(ZMK_ADV_CONN):
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CHECKED_ADV_STOP();
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CHECKED_DIR_ADV();
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break;
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case ZMK_ADV_DIR + CURR_ADV(ZMK_ADV_NONE):
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CHECKED_DIR_ADV();
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break;
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case ZMK_ADV_CONN + CURR_ADV(ZMK_ADV_DIR):
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CHECKED_ADV_STOP();
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CHECKED_OPEN_ADV();
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break;
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case ZMK_ADV_CONN + CURR_ADV(ZMK_ADV_NONE):
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CHECKED_OPEN_ADV();
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break;
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}
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return 0;
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};
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static void update_advertising_callback(struct k_work *work) { update_advertising(); }
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K_WORK_DEFINE(update_advertising_work, update_advertising_callback);
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int zmk_ble_clear_bonds() {
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LOG_DBG("");
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if (bt_addr_le_cmp(&profiles[active_profile].peer, BT_ADDR_LE_ANY)) {
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LOG_DBG("Unpairing!");
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bt_unpair(BT_ID_DEFAULT, &profiles[active_profile].peer);
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set_profile_address(active_profile, BT_ADDR_LE_ANY);
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}
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update_advertising();
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return 0;
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};
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int zmk_ble_prof_select(u8_t index) {
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LOG_DBG("profile %d", index);
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if (active_profile == index) {
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return 0;
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}
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active_profile = index;
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settings_save_one("ble/active_profile", &active_profile, sizeof(active_profile));
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update_advertising();
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raise_profile_changed_event();
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return 0;
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};
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int zmk_ble_prof_next() {
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LOG_DBG("");
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return zmk_ble_prof_select((active_profile + 1) % PROFILE_COUNT);
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};
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int zmk_ble_prof_prev() {
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LOG_DBG("");
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return zmk_ble_prof_select((active_profile + PROFILE_COUNT - 1) % PROFILE_COUNT);
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};
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bt_addr_le_t *zmk_ble_active_profile_addr() { return &profiles[active_profile].peer; }
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char *zmk_ble_active_profile_name() { return profiles[active_profile].name; }
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL)
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void zmk_ble_set_peripheral_addr(bt_addr_le_t *addr) {
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memcpy(&peripheral_addr, addr, sizeof(bt_addr_le_t));
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settings_save_one("ble/peripheral_address", addr, sizeof(bt_addr_le_t));
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}
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#endif /* IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL) */
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#if IS_ENABLED(CONFIG_SETTINGS)
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static int ble_profiles_handle_set(const char *name, size_t len, settings_read_cb read_cb,
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void *cb_arg) {
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const char *next;
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LOG_DBG("Setting BLE value %s", log_strdup(name));
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if (settings_name_steq(name, "profiles", &next) && next) {
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char *endptr;
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u8_t idx = strtoul(next, &endptr, 10);
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if (*endptr != '\0') {
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LOG_WRN("Invalid profile index: %s", log_strdup(next));
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return -EINVAL;
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}
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if (len != sizeof(struct zmk_ble_profile)) {
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LOG_ERR("Invalid profile size (got %d expected %d)", len,
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sizeof(struct zmk_ble_profile));
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return -EINVAL;
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}
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if (idx >= PROFILE_COUNT) {
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LOG_WRN("Profile address for index %d is larger than max of %d", idx, PROFILE_COUNT);
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return -EINVAL;
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}
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int err = read_cb(cb_arg, &profiles[idx], sizeof(struct zmk_ble_profile));
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if (err <= 0) {
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LOG_ERR("Failed to handle profile address from settings (err %d)", err);
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return err;
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}
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char addr_str[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(&profiles[idx].peer, addr_str, sizeof(addr_str));
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LOG_DBG("Loaded %s address for profile %d", log_strdup(addr_str), idx);
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} else if (settings_name_steq(name, "active_profile", &next) && !next) {
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if (len != sizeof(active_profile)) {
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return -EINVAL;
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}
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int err = read_cb(cb_arg, &active_profile, sizeof(active_profile));
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if (err <= 0) {
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LOG_ERR("Failed to handle active profile from settings (err %d)", err);
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return err;
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}
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}
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_CENTRAL)
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else if (settings_name_steq(name, "peripheral_address", &next) && !next) {
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if (len != sizeof(bt_addr_le_t)) {
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return -EINVAL;
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}
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int err = read_cb(cb_arg, &peripheral_addr, sizeof(bt_addr_le_t));
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if (err <= 0) {
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LOG_ERR("Failed to handle peripheral address from settings (err %d)", err);
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return err;
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}
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}
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#endif
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return 0;
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};
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struct settings_handler profiles_handler = {.name = "ble", .h_set = ble_profiles_handle_set};
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#endif /* IS_ENABLED(CONFIG_SETTINGS) */
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static bool is_conn_active_profile(const struct bt_conn *conn) {
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return bt_addr_le_cmp(bt_conn_get_dst(conn), &profiles[active_profile].peer) == 0;
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}
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static void connected(struct bt_conn *conn, u8_t err) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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advertising_status = ZMK_ADV_NONE;
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if (err) {
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LOG_WRN("Failed to connect to %s (%u)", log_strdup(addr), err);
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update_advertising();
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return;
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}
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LOG_DBG("Connected %s", log_strdup(addr));
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bt_conn_le_param_update(conn, BT_LE_CONN_PARAM(0x0006, 0x000c, 30, 400));
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#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
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bt_conn_le_phy_update(conn, BT_CONN_LE_PHY_PARAM_2M);
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#endif
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if (bt_conn_set_security(conn, BT_SECURITY_L2)) {
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LOG_ERR("Failed to set security");
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}
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update_advertising();
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if (is_conn_active_profile(conn)) {
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LOG_DBG("Active profile connected");
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raise_profile_changed_event();
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}
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}
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static void disconnected(struct bt_conn *conn, u8_t reason) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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LOG_DBG("Disconnected from %s (reason 0x%02x)", log_strdup(addr), reason);
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// We need to do this in a work callback, otherwise the advertising update will still see the
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// connection for a profile as active, and not start advertising yet.
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k_work_submit(&update_advertising_work);
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if (is_conn_active_profile(conn)) {
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LOG_DBG("Active profile disconnected");
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k_work_submit(&raise_profile_changed_event_work);
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}
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}
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static void security_changed(struct bt_conn *conn, bt_security_t level, enum bt_security_err err) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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if (!err) {
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LOG_DBG("Security changed: %s level %u", log_strdup(addr), level);
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} else {
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LOG_ERR("Security failed: %s level %u err %d", log_strdup(addr), level, err);
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}
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}
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static struct bt_conn_cb conn_callbacks = {
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.connected = connected,
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.disconnected = disconnected,
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.security_changed = security_changed,
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};
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static void auth_passkey_display(struct bt_conn *conn, unsigned int passkey) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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LOG_DBG("Passkey for %s: %06u", log_strdup(addr), passkey);
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}
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#ifdef CONFIG_ZMK_BLE_PASSKEY_ENTRY
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static void auth_passkey_entry(struct bt_conn *conn) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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LOG_DBG("Passkey entry requested for %s", log_strdup(addr));
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auth_passkey_entry_conn = bt_conn_ref(conn);
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}
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#endif
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static void auth_cancel(struct bt_conn *conn) {
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char addr[BT_ADDR_LE_STR_LEN];
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bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
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if (auth_passkey_entry_conn) {
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bt_conn_unref(auth_passkey_entry_conn);
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auth_passkey_entry_conn = NULL;
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}
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passkey_digit = 0;
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LOG_DBG("Pairing cancelled: %s", log_strdup(addr));
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}
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#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
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static enum bt_security_err auth_pairing_accept(struct bt_conn *conn,
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const struct bt_conn_pairing_feat *const feat) {
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struct bt_conn_info info;
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bt_conn_get_info(conn, &info);
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LOG_DBG("role %d, open? %s", info.role, active_profile_is_open() ? "yes" : "no");
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if (info.role == BT_CONN_ROLE_SLAVE && !active_profile_is_open()) {
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LOG_WRN("Rejecting pairing request to taken profile %d", active_profile);
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return BT_SECURITY_ERR_PAIR_NOT_ALLOWED;
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}
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return BT_SECURITY_ERR_SUCCESS;
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};
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#endif /* !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL) */
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static void auth_pairing_complete(struct bt_conn *conn, bool bonded) {
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struct bt_conn_info info;
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char addr[BT_ADDR_LE_STR_LEN];
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const bt_addr_le_t *dst = bt_conn_get_dst(conn);
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bt_addr_le_to_str(dst, addr, sizeof(addr));
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bt_conn_get_info(conn, &info);
|
|
|
|
if (info.role != BT_CONN_ROLE_SLAVE) {
|
|
LOG_DBG("SKIPPING FOR ROLE %d", info.role);
|
|
return;
|
|
}
|
|
|
|
#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
|
|
if (!active_profile_is_open()) {
|
|
LOG_ERR("Pairing completed but current profile is not open: %s", log_strdup(addr));
|
|
bt_unpair(BT_ID_DEFAULT, dst);
|
|
return;
|
|
}
|
|
#endif /* !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL) */
|
|
|
|
set_profile_address(active_profile, dst);
|
|
update_advertising();
|
|
};
|
|
|
|
static struct bt_conn_auth_cb zmk_ble_auth_cb_display = {
|
|
#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
|
|
.pairing_accept = auth_pairing_accept,
|
|
#endif /* !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL) */
|
|
.pairing_complete = auth_pairing_complete,
|
|
// .passkey_display = auth_passkey_display,
|
|
|
|
#ifdef CONFIG_ZMK_BLE_PASSKEY_ENTRY
|
|
.passkey_entry = auth_passkey_entry,
|
|
#endif
|
|
.cancel = auth_cancel,
|
|
};
|
|
|
|
static void zmk_ble_ready(int err) {
|
|
LOG_DBG("ready? %d", err);
|
|
if (err) {
|
|
LOG_ERR("Bluetooth init failed (err %d)", err);
|
|
return;
|
|
}
|
|
|
|
update_advertising();
|
|
}
|
|
|
|
static int zmk_ble_init(struct device *_arg) {
|
|
int err = bt_enable(NULL);
|
|
|
|
if (err) {
|
|
LOG_ERR("BLUETOOTH FAILED (%d)", err);
|
|
return err;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_SETTINGS)
|
|
settings_subsys_init();
|
|
|
|
err = settings_register(&profiles_handler);
|
|
if (err) {
|
|
LOG_ERR("Failed to setup the profile settings handler (err %d)", err);
|
|
return err;
|
|
}
|
|
|
|
settings_load();
|
|
|
|
#endif
|
|
|
|
#if IS_ENABLED(CONFIG_ZMK_BLE_CLEAR_BONDS_ON_START)
|
|
LOG_WRN("Clearing all existing BLE bond information from the keyboard");
|
|
|
|
for (int i = 0; i < 10; i++) {
|
|
bt_unpair(i, NULL);
|
|
}
|
|
|
|
for (int i = 0; i < PROFILE_COUNT; i++) {
|
|
char setting_name[15];
|
|
sprintf(setting_name, "ble/profiles/%d", i);
|
|
|
|
err = settings_delete(setting_name);
|
|
if (err) {
|
|
LOG_ERR("Failed to delete setting: %d", err);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
bt_conn_cb_register(&conn_callbacks);
|
|
bt_conn_auth_cb_register(&zmk_ble_auth_cb_display);
|
|
|
|
zmk_ble_ready(0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int zmk_ble_unpair_all() {
|
|
int resp = 0;
|
|
for (int i = BT_ID_DEFAULT; i < CONFIG_BT_ID_MAX; i++) {
|
|
|
|
int err = bt_unpair(BT_ID_DEFAULT, NULL);
|
|
if (err) {
|
|
resp = err;
|
|
LOG_ERR("Failed to unpair devices (err %d)", err);
|
|
}
|
|
}
|
|
|
|
return resp;
|
|
};
|
|
|
|
bool zmk_ble_handle_key_user(struct zmk_key_event *key_event) {
|
|
zmk_key key = key_event->key;
|
|
|
|
if (!auth_passkey_entry_conn) {
|
|
return true;
|
|
}
|
|
|
|
if (key < NUMBER_1 || key > NUMBER_0) {
|
|
return true;
|
|
}
|
|
|
|
u32_t val = (key == NUMBER_0) ? 0 : (key - NUMBER_1 + 1);
|
|
|
|
passkey_entries[passkey_digit++] = val;
|
|
|
|
if (passkey_digit == 6) {
|
|
u32_t passkey = 0;
|
|
for (int i = 5; i >= 0; i--) {
|
|
passkey = (passkey * 10) + val;
|
|
}
|
|
bt_conn_auth_passkey_entry(auth_passkey_entry_conn, passkey);
|
|
bt_conn_unref(auth_passkey_entry_conn);
|
|
auth_passkey_entry_conn = NULL;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
SYS_INIT(zmk_ble_init, APPLICATION, CONFIG_ZMK_BLE_INIT_PRIORITY);
|