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    R128蓝牙占用内存资源较大,修改menuconfig配置后经常编译不过或无法运行

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    • A
      abcdef LV 5 last edited by

      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。

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      • bayche
        bayche LV 6 last edited by

        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.ld
        index 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)
        
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        • livpo
          livpo LV 6 last edited by xiaowenge

          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[i];
          
                          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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