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/*
* Copyright (c) 2020 Peter Johanson
*
* SPDX-License-Identifier: MIT
*/
#include <device.h>
#include <init.h>
#include <math.h>
#include <settings/settings.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/conn.h>
#include <bluetooth/hci.h>
#include <bluetooth/uuid.h>
#include <bluetooth/gatt.h>
#include <logging/log.h>
LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
#include <zmk/keys.h>
#include <zmk/split/bluetooth/uuid.h>
static struct bt_conn *auth_passkey_entry_conn;
static u8_t passkey_entries[6] = {0, 0, 0, 0, 0, 0};
static u8_t passkey_digit = 0;
static void connected(struct bt_conn *conn, u8_t err)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
if (err)
{
LOG_WRN("Failed to connect to %s (%u)", log_strdup(addr), err);
return;
}
LOG_DBG("Connected %s", log_strdup(addr));
bt_conn_le_param_update(conn, BT_LE_CONN_PARAM(0x0006, 0x000c, 30, 400));
#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
bt_conn_le_phy_update(conn, BT_CONN_LE_PHY_PARAM_2M);
#endif
if (bt_conn_set_security(conn, BT_SECURITY_L2))
{
LOG_ERR("Failed to set security");
}
}
static void disconnected(struct bt_conn *conn, u8_t reason)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
LOG_DBG("Disconnected from %s (reason 0x%02x)", log_strdup(addr), reason);
}
static void security_changed(struct bt_conn *conn, bt_security_t level,
enum bt_security_err err)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
if (!err)
{
LOG_DBG("Security changed: %s level %u", log_strdup(addr), level);
}
else
{
LOG_ERR("Security failed: %s level %u err %d", log_strdup(addr), level,
err);
}
}
static struct bt_conn_cb conn_callbacks = {
.connected = connected,
.disconnected = disconnected,
.security_changed = security_changed,
};
static void auth_passkey_display(struct bt_conn *conn, unsigned int passkey)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
LOG_DBG("Passkey for %s: %06u", log_strdup(addr), passkey);
}
#ifdef CONFIG_ZMK_BLE_PASSKEY_ENTRY
static void auth_passkey_entry(struct bt_conn *conn)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
LOG_DBG("Passkey entry requested for %s", log_strdup(addr));
auth_passkey_entry_conn = bt_conn_ref(conn);
}
#endif
static void auth_cancel(struct bt_conn *conn)
{
char addr[BT_ADDR_LE_STR_LEN];
bt_addr_le_to_str(bt_conn_get_dst(conn), addr, sizeof(addr));
if (auth_passkey_entry_conn)
{
bt_conn_unref(auth_passkey_entry_conn);
auth_passkey_entry_conn = NULL;
}
passkey_digit = 0;
LOG_DBG("Pairing cancelled: %s", log_strdup(addr));
}
static struct bt_conn_auth_cb zmk_ble_auth_cb_display = {
// .passkey_display = auth_passkey_display,
#ifdef CONFIG_ZMK_BLE_PASSKEY_ENTRY
.passkey_entry = auth_passkey_entry,
#endif
.cancel = auth_cancel,
};
static const struct bt_data zmk_ble_ad[] = {
BT_DATA_BYTES(BT_DATA_FLAGS, (BT_LE_AD_GENERAL | BT_LE_AD_NO_BREDR)),
BT_DATA_BYTES(BT_DATA_UUID16_SOME,
#if !IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
0x12, 0x18, /* HID Service */
#endif
0x0f, 0x18 /* Battery Service */
),
#if IS_ENABLED(CONFIG_ZMK_SPLIT_BLE_ROLE_PERIPHERAL)
BT_DATA_BYTES(BT_DATA_UUID128_ALL,
ZMK_SPLIT_BT_SERVICE_UUID)
#endif
};
static void zmk_ble_ready(int err)
{
LOG_DBG("ready? %d", err);
if (err)
{
LOG_ERR("Bluetooth init failed (err %d)", err);
return;
}
err = bt_le_adv_start(BT_LE_ADV_CONN_NAME, zmk_ble_ad, ARRAY_SIZE(zmk_ble_ad), NULL, 0);
if (err)
{
LOG_ERR("Advertising failed to start (err %d)", err);
return;
}
}
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_BT_SETTINGS))
{
settings_load();
}
bt_conn_cb_register(&conn_callbacks);
bt_conn_auth_cb_register(&zmk_ble_auth_cb_display);
zmk_ble_ready(0);
return 0;
}
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 < NUM_1 || key > NUM_0)
{
return true;
}
u32_t val = (key == NUM_0) ? 0 : (key - NUM_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);