BlueZ-5.35蓝牙设备开关控制的源码

1，bluetoothctl中开关蓝牙设备的命令

{ "power",        "<on/off>", cmd_power, "Set controller power" }

static void cmd_power(const char *arg)
{
	dbus_bool_t powered;
	char *str;

	if (parse_argument_on_off(arg, &powered) == FALSE)
		return;

	if (check_default_ctrl() == FALSE)
		return;

	str = g_strdup_printf("power %s", powered == TRUE ? "on" : "off");

	if (g_dbus_proxy_set_property_basic(default_ctrl, "Powered",
					DBUS_TYPE_BOOLEAN, &powered,
					generic_callback, str, g_free) == TRUE)
		return;

	g_free(str);
}

static void generic_callback(const DBusError *error, void *user_data)
{
	char *str = user_data;

	if (dbus_error_is_set(error))
		rl_printf("Failed to set %s: %s\n", str, error->name);
	else
		rl_printf("Changing %s succeeded\n", str);
}

2，rfkill命令，可以软件关闭蓝牙设备