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R128蓝牙占用内存资源较大，尝试修改过以下两处的蓝牙配置，修改后再重新编译就会失败 1、使用menuconfig修改配置CONFIG_BT_VAR_MEM_DYNC_ALLOC=y，后初始化蓝牙失败 [cmd ERR] bt_ready():556, Bluetooth init failed (err -105)添加打印定位到是内存分配失败 2、使用menuconfig修改配置CONFIG_BT_SMP关闭可以减少很多内存，但是编译出错，提示缺少smp_null.c。
CONFIG_BT_VAR_MEM_DYNC_ALLOC配置问题，修改方法如下。，即交换 _net_buf_pool_list_end = .;和 KEEP(*(SORT_BY_NAME("._net_buf_pool.static.*")))这两行 diff --git a/include/ble/linker/common-ram.ld b/include/ble/linker/common-ram.ldindex e97433c91..40744e392 100755--- a/include/ble/linker/common-ram.ld+++ b/include/ble/linker/common-ram.ld@@ -84,8 +84,8 @@ { _net_buf_pool_list_start = .; _net_buf_pool_list = .; KEEP(*(SORT_BY_NAME("._net_buf_pool.static.*"))) _net_buf_pool_list_end = .; } GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
CONFIG_BT_SMP 配置问题，下面内容保存为smp_null.c 放到 ./src/ble/host/smp_null.c/** * @file smp_null.c * Security Manager Protocol stub *//* * Copyright (c) 2015-2016 Intel Corporation * * SPDX-License-Identifier: Apache-2.0 */#include <zephyr.h>#include <errno.h>#include <ble/sys/atomic.h>#include <ble/sys/util.h>#include <bluetooth/bluetooth.h>#include <bluetooth/conn.h>#include <bluetooth/buf.h>#define BT_DBG_ENABLED IS_ENABLED(CONFIG_BT_DEBUG_HCI_CORE)#define LOG_MODULE_NAME bt_smp#include "common/log.h"#include "hci_core.h"#include "conn_internal.h"#include "l2cap_internal.h"#include "smp.h"static struct bt_l2cap_le_chan bt_smp_pool[CONFIG_BT_MAX_CONN];int bt_smp_sign_verify(struct bt_conn *conn, struct net_buf *buf){ return -ENOTSUP;}int bt_smp_sign(struct bt_conn *conn, struct net_buf *buf){ return -ENOTSUP;}static int bt_smp_recv(struct bt_l2cap_chan *chan, struct net_buf *req_buf){ struct bt_conn *conn = chan->conn; struct bt_smp_pairing_fail *rsp; struct bt_smp_hdr *hdr; struct net_buf *buf; ARG_UNUSED(req_buf); /* If a device does not support pairing then it shall respond with * a Pairing Failed command with the reason set to "Pairing Not * Supported" when any command is received. * Core Specification Vol. 3, Part H, 3.3 */ buf = bt_l2cap_create_pdu(NULL, 0); /* NULL is not a possible return due to K_FOREVER */ hdr = net_buf_add(buf, sizeof(*hdr)); hdr->code = BT_SMP_CMD_PAIRING_FAIL; rsp = net_buf_add(buf, sizeof(*rsp)); rsp->reason = BT_SMP_ERR_PAIRING_NOTSUPP; if (bt_l2cap_send_cb(conn, BT_L2CAP_CID_SMP, buf, NULL, NULL)) { net_buf_unref(buf); } return 0;}static int bt_smp_accept(struct bt_conn *conn, struct bt_l2cap_chan **chan){ int i; static const struct bt_l2cap_chan_ops ops = { .recv = bt_smp_recv, }; BT_DBG("conn %p handle %u", conn, conn->handle); for (i = 0; i < ARRAY_SIZE(bt_smp_pool); i++) { struct bt_l2cap_le_chan *smp = &bt_smp_pool; if (smp->chan.conn) { continue; } smp->chan.ops = &ops; *chan = &smp->chan; return 0; } BT_ERR("No available SMP context for conn %p", conn); return -ENOMEM;}BT_L2CAP_CHANNEL_DEFINE(smp_fixed_chan, BT_L2CAP_CID_SMP, bt_smp_accept, NULL);int bt_smp_init(void){ return 0;}#if defined(CONFIG_BT_DEINIT)int bt_smp_deinit(void){ return 0;}void bt_smp_mem_deinit(void){ return;}void bt_keys_mem_deinit(void){ return;}#endif#if defined(CONFIG_BT_VAR_MEM_DYNC_ALLOC)void keys_dynamic_mem_alloc(void){}void keys_dynamic_mem_free(void){}#endif
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