1CONFIG_BT=y 2CONFIG_BT_PERIPHERAL=y 3CONFIG_BT_DEVICE_NAME="Zephyr Peripheral MTU Update Sample" 4CONFIG_BT_MAX_CONN=1 5 6CONFIG_LOG=y 7CONFIG_BT_L2CAP_LOG_LEVEL_DBG=y 8 9# HCI ACL buffers size 10# BT_L2CAP_RX_MTU = CONFIG_BT_BUF_ACL_RX_SIZE - BT_L2CAP_HDR_SIZE 11CONFIG_BT_BUF_ACL_RX_SIZE=251 12 13# L2CAP SDU/PDU TX MTU 14CONFIG_BT_L2CAP_TX_MTU=247 15