• 状态
  • 已锁定 已锁定
  • 回复 4 回复
  • 订户 0 订户
  • 视图 238 视图
  • 用户 0 会员在此处
选项
选项
相关

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

[参考译文] CC2652R：NVS 热点/ APSME_SearchTCLinkKeyEntry

admin
Guru**** 2463330 points


请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/1216468/cc2652r-nvs-hot-item-apsme_searchtclinkkeyentry

器件型号：CC2652R

有没有人获得 TIRTOS7 NVS 热项补丁？ 或者也可以是 能够在 Zigbee 3.0 (仅限)网络上获得合理性能的 APSME_SearchTCLinkKeyEntry 的修改版本。 处理 Zigbee 3.0 ZStack 时非常慢、NVS 占用了大量时间。

相关：

 - https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/1057311/cc2652p-function-apsme_searchtclinkkeyentry-in-sdk-5-30-execute-wrong-result/3911553#3911553

 - https://e2e.ti.com/support/wireless-connectivity/zigbee-thread-group/zigbee-and-thread/f/zigbee-thread-forum/1057307/cc2652p-hot-nv-item-on-zstack

  • 0
    TI__Guru**** 2463330 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    您好、Mathew：

    鉴于 TI SDK 不实施其实现的 NVS 热项功能、您需要就此主题咨询 Aries Lord。

    https://e2e.ti.com/f/1/t/1057307 
    https://e2e.ti.com/f/1/t/1200442 

    此致、
    Ryan

  • 0
    TI__Guru**** 2463330 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    对于我的问题的第一部分、我尝试了以下解决方案： 

    diff --git a/znp_CC26X2R1_LAUNCHXL_tirtos_ccs/Application/Services/nvocmp.c b/znp_CC26X2R1_LAUNCHXL_tirtos_ccs/Application/Services/nvocmp.c
index 802442d..9908941 100644
--- a/znp_CC26X2R1_LAUNCHXL_tirtos_ccs/Application/Services/nvocmp.c
+++ b/znp_CC26X2R1_LAUNCHXL_tirtos_ccs/Application/Services/nvocmp.c
@@ -207,6 +207,9 @@ Requires API's in a crc.h to implement CRC functionality.
 #include "nv_linux.h"
 #endif
 
+
+#include  "zcomdef.h"
+
 //*****************************************************************************
 // Constants and Definitions
 //*****************************************************************************
@@ -521,6 +524,13 @@ typedef struct
     uint8_t  hpage; // Header page
 } NVOCMP_itemHdr_t;
 
+typedef struct {
+    uint32_t cmpid; // Compressed ID
+    uint16_t subid; // Sub ID
+    uint16_t itemid; // Item ID
+    uint8_t  sysid; // System ID
+} NVOCMP_hotItem_t;
+
 // Length (bytes) of compressed header
 #define NVOCMP_ITEMHDRLEN  7
 
@@ -638,6 +648,34 @@ typedef struct
   NVOCMP_compactInfo_t compactInfo;
   NVOCMP_pageInfo_t pageInfo[NVOCMP_NVPAGES];
 } NVOCMP_nvHandle_t;
+
+typedef struct
+{
+  bool     vail;
+  uint8_t  pg;
+  uint16_t ofs;
+} NVOCMP_hotNv_t;
+
+#define   NVOCMP_HOT_IDS_ARRAY    { \
+          {NVOCMP_CMPRID(NVINTF_SYSID_ZSTACK,ZCD_NV_EX_LEGACY,ZCD_NV_NWKKEY), {false, 0xFF, 0xFFFF}}, \
+          {NVOCMP_CMPRID(NVINTF_SYSID_ZSTACK,ZCD_NV_EX_LEGACY,ZCD_NV_NWK_ACTIVE_KEY_INFO), {false, 0xFF, 0xFFFF}}, \
+          {NVOCMP_CMPRID(NVINTF_SYSID_ZSTACK,ZCD_NV_EX_LEGACY,ZCD_NV_NWK_ALTERN_KEY_INFO), {false, 0xFF, 0xFFFF}}, \
+          {NVOCMP_CMPRID(NVINTF_SYSID_ZSTACK,ZCD_NV_EX_LEGACY,ZCD_NV_TCLK_SEED), {false, 0xFF, 0xFFFF}}, \
+           }
+
+typedef struct
+{
+  uint32_t cid;
+  NVOCMP_hotNv_t nv;
+} NVOCMP_hotId_t;
+
+
+
+NVOCMP_hotId_t NVOCMP_hotIdArray[] = NVOCMP_HOT_IDS_ARRAY;
+
+
+
+
 //*****************************************************************************
 // Local variables
 //*****************************************************************************
@@ -695,6 +733,11 @@ static uint16_t NVOCMP_badCRCCount = 0;
 NVOCMP_initAction_t gAction;
 uint8_t NVOCMP_size;
 
+NVOCMP_hotNv_t* (*pfn_nvocmp_hotItemMatch)(NVOCMP_hotItem_t hotItem) = NULL;
+void (*pfn_nvocmp_hotItemUpdate)(uint8_t pg, uint16_t ofs, NVOCMP_hotItem_t hotItem) = NULL;
+NVOCMP_hotNv_t* (*pfn_nvocmp_hotItemMatchCont)(uint8_t sysid, uint16_t itemid, void *cBuf, uint16_t clength, uint16_t coff) = NULL;
+void (*pfn_nvocmp_hotItemUpdateCont)(NVOCMP_hotItem_t hotItem, void *cBuf, uint16_t clength, uint16_t coff) = NULL;
+
 //*****************************************************************************
 // NV API Function Prototypes
 //*****************************************************************************
@@ -777,6 +820,11 @@ static void       NVOCMP_migratePage(NVOCMP_nvHandle_t *pNvHandle, uint8_t page)
 static void       NVOCMP_copyItem(uint8_t srcPg, uint8_t dstPg, uint16_t sOfs, uint16_t dOfs, uint16_t len);
 #endif
 
+static NVOCMP_hotNv_t* NVOCMP_hotItemMatch(NVOCMP_hotItem_t hotItem);
+static void  NVOCMP_hotItemUpdate(uint8_t pg, uint16_t ofs, NVOCMP_hotItem_t hotItem);
+static bool  NVOCMP_hotItemMatchCont(uint8_t sysid, uint16_t itemid, NVOCMP_itemInfo_t *pInfo, NVOCMP_itemHdr_t* pHdr);
+static void  NVOCMP_hotItemUpdateCont(NVOCMP_hotItem_t hotItem, void *cBuf, uint16_t clength, uint16_t coff);
+
 //*****************************************************************************
 // Load Pointer Functions (These are declared in nvoctp.h)
 //*****************************************************************************
@@ -3156,6 +3204,14 @@ static void NVOCMP_writeItem(NVOCMP_nvHandle_t *pNvHandle, NVOCMP_itemHdr_t *pHd
         dLen = pHdr->len;
         hOfs = dstOff + dLen;
 
+        // update hot ids, luoyiming 2020-05-22
+        NVOCMP_hotItem_t hotItem = {.subid = pHdr->subid, .itemid = pHdr->itemid, .sysid = pHdr->sysid};
+        hotItem.cmpid = pHdr->cmpid;
+        NVOCMP_hotItemUpdate(dstPg, dstOff, hotItem);
+
+        // update cont hot id, luoyiming 2021-11-29
+        NVOCMP_hotItemUpdateCont(hotItem, pBuf, pHdr->len, 0);
+
         if (iLen <= NVOCMP_SMALLITEM)
         {
             // Construct item in one buffer
@@ -3649,6 +3705,51 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
 #ifdef NVOCMP_GPRAM
     NVOCMP_disableCache(&vm);
 #endif
+    // find hot id first, luoyiming 2020-05-21
+    if( (flag & NVOCMP_FINDLMASK) == NVOCMP_FINDSTRICT )
+    {
+      NVOCMP_hotItem_t hotItem = {.subid = pHdr->subid, .itemid = pHdr->itemid, .sysid = pHdr->sysid};
+      hotItem.cmpid = cid;
+      NVOCMP_hotNv_t* pHotNv = NVOCMP_hotItemMatch(hotItem);
+      if( pHotNv )
+      {
+        NVOCMP_itemHdr_t iHdr;
+        NVOCMP_readHeader(pHotNv->pg, pHotNv->ofs, &iHdr, false);
+        if((iHdr.stats & NVOCMP_ACTIVEIDBIT) &&
+          !(iHdr.stats & NVOCMP_VALIDIDBIT))
+        {
+          if( iHdr.cmpid == cid )
+          {
+            memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
+#ifdef NVOCMP_GPRAM
+            NVOCMP_restoreCache(vm);
+#endif
+            return(NVINTF_SUCCESS);
+          }
+        }
+      }
+    }
+    else if((pInfo) && ((flag & NVOCMP_FINDHMASK) == NVOCMP_FINDCONTENT))
+    {
+      if( pHdr->subid == 0 )
+      {
+        NVOCMP_itemHdr_t iHdr;
+        if(true == NVOCMP_hotItemMatchCont(pHdr->sysid, pHdr->itemid, pInfo, &iHdr))
+        {
+          if(!NVOCMP_readItem(&iHdr, 0, pInfo->rlength, pInfo->rBuf, false))
+          {
+            if(!memcmp((uint8_t *)pInfo->rBuf + pInfo->coff, pInfo->cBuf, pInfo->clength))
+            {
+              memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
+#ifdef NVOCMP_GPRAM
+              NVOCMP_restoreCache(vm);
+#endif
+              return(NVINTF_SUCCESS);
+            }
+          }
+        }
+      }
+    }
 
     for(p = pg; nvSearched < NVOCMP_NVSIZE; p = NVOCMP_DECPAGE(p), ofs = pNvHandle->pageInfo[p].offset)
     {
@@ -3659,7 +3760,7 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
         continue;
       }
 #endif
-      NVOCMP_read(pg, 0, (uint8_t *)pTBuffer, FLASH_PAGE_SIZE);
+      NVOCMP_read(p, 0, (uint8_t *)pTBuffer, FLASH_PAGE_SIZE);
 
       while(ofs >= (NVOCMP_PGDATAOFS + NVOCMP_ITEMHDRLEN))
       {
@@ -3687,6 +3788,9 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
                   if (cid == iHdr.cmpid)
                   {
                       found = true;
+                      NVOCMP_hotItem_t hotItem = {.subid = iHdr.subid, .itemid = iHdr.itemid, .sysid = iHdr.sysid};
+                      hotItem.cmpid = iHdr.cmpid;
+                      NVOCMP_hotItemUpdate(p, ofs, hotItem);
                   }
                   break;
               case NVOCMP_FINDSYSID:
@@ -3719,8 +3823,14 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
                 {
                   if(!NVOCMP_readItem(&iHdr, 0, pInfo->rlength, pInfo->rBuf, false))
                   {
+                    // update hot item when read item success.
+                    NVOCMP_hotItem_t hotItem = {.subid = iHdr.subid, .itemid = iHdr.itemid, .sysid = iHdr.sysid};
+                    hotItem.cmpid = iHdr.cmpid;
+                    NVOCMP_hotItemUpdate(p, ofs, hotItem);
+
                     if(!memcmp((uint8_t *)pInfo->rBuf + pInfo->coff, pInfo->cBuf, pInfo->clength))
                     {
+                      NVOCMP_hotItemUpdateCont(hotItem, pInfo->cBuf, pInfo->clength, pInfo->coff);
                       memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
 #ifdef NVOCMP_GPRAM
                       NVOCMP_restoreCache(vm);
@@ -3797,6 +3907,46 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
     uint16_t items = 0;
     uint32_t cid = NVOCMP_CMPRID(pHdr->sysid,pHdr->itemid,pHdr->subid);
 
+    // find hot id first, luoyiming 2020-05-21
+    if( (flag & NVOCMP_FINDLMASK) == NVOCMP_FINDSTRICT )
+    {
+      NVOCMP_hotItem_t hotItem = {.subid = pHdr->subid, .itemid = pHdr->itemid, .sysid = pHdr->sysid};
+      hotItem.cmpid = cid;
+      NVOCMP_hotNv_t* pHotNv = NVOCMP_hotItemMatch(hotItem);
+      if( pHotNv )
+      {
+        NVOCMP_itemHdr_t iHdr;
+        NVOCMP_readHeader(pHotNv->pg, pHotNv->ofs, &iHdr, false);
+        if((iHdr.stats & NVOCMP_ACTIVEIDBIT) &&
+          !(iHdr.stats & NVOCMP_VALIDIDBIT))
+        {
+          if( iHdr.cmpid == cid )
+          {
+            memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
+            return(NVINTF_SUCCESS);
+          }
+        }
+      }
+    }
+    else if((pInfo) && ((flag & NVOCMP_FINDHMASK) == NVOCMP_FINDCONTENT))
+    {
+      if( pHdr->subid == 0 )
+      {
+        NVOCMP_itemHdr_t iHdr;
+        if(true == NVOCMP_hotItemMatchCont(pHdr->sysid, pHdr->itemid, pInfo, &iHdr))
+        {
+          if(!NVOCMP_readItem(&iHdr, 0, pInfo->rlength, pInfo->rBuf, false))
+          {
+            if(!memcmp((uint8_t *)pInfo->rBuf + pInfo->coff, pInfo->cBuf, pInfo->clength))
+            {
+              memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
+              return(NVINTF_SUCCESS);
+            }
+          }
+        }
+      }
+    }
+
 #if (NVOCMP_NVPAGES > NVOCMP_NVTWOP)
     uint16_t nvSearched = 0;
     for(p = pg; nvSearched < NVOCMP_NVSIZE; p = NVOCMP_DECPAGE(p), ofs = pNvHandle->pageInfo[p].offset)
@@ -3833,6 +3983,9 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
                   if (cid == iHdr.cmpid)
                   {
                       found = true;
+                      NVOCMP_hotItem_t hotItem = {.subid = iHdr.subid, .itemid = iHdr.itemid, .sysid = iHdr.sysid};
+                      hotItem.cmpid = iHdr.cmpid;
+                      NVOCMP_hotItemUpdate(p, ofs, hotItem);
                   }
                   break;
               case NVOCMP_FINDSYSID:
@@ -3862,8 +4015,14 @@ static int8_t NVOCMP_findItem(NVOCMP_nvHandle_t *pNvHandle, uint8_t pg, uint16_t
                 {
                   if(!NVOCMP_readItem(&iHdr, 0, pInfo->rlength, pInfo->rBuf, false))
                   {
+                    // update hot item when read item success.
+                    NVOCMP_hotItem_t hotItem = {.subid = iHdr.subid, .itemid = iHdr.itemid, .sysid = iHdr.sysid};
+                    hotItem.cmpid = iHdr.cmpid;
+                    NVOCMP_hotItemUpdate(p, ofs, hotItem);
+
                     if(!memcmp((uint8_t *)pInfo->rBuf + pInfo->coff, pInfo->cBuf, pInfo->clength))
                     {
+                      NVOCMP_hotItemUpdateCont(hotItem, pInfo->cBuf, pInfo->clength, pInfo->coff);
                       memcpy(pHdr, &iHdr, sizeof(NVOCMP_itemHdr_t));
                       return(NVINTF_SUCCESS);
                     }
@@ -5028,6 +5187,119 @@ static uint8_t NVOCMP_verifyCRC(uint16_t iOfs, uint16_t len, uint8_t crc, uint8_
     return(newCRC == crc ? NVINTF_SUCCESS : NVINTF_CORRUPT);
 }
 
+/*********************************************************************
+ * @fn      hotItemMatch
+ *
+ * @brief   Look for the parameter 'id' in the hot items array.
+ *
+ * @param   hotItem - A valid NV item.
+ *
+ * @return  A valid index into the hot items if the item is hot; OSAL_NV_MAX_HOT if not.
+ */
+static NVOCMP_hotNv_t* NVOCMP_hotItemMatch(NVOCMP_hotItem_t hotItem)
+{
+  uint8_t nvNum = sizeof(NVOCMP_hotIdArray)/sizeof(NVOCMP_hotId_t);
+  uint8_t n;
+  for ( n=0; n<nvNum; n++ )
+  {
+    if( (hotItem.cmpid == NVOCMP_hotIdArray[n].cid) && (NVOCMP_hotIdArray[n].nv.vail == true) )
+    {
+      return &NVOCMP_hotIdArray[n].nv;
+    }
+  }
+
+  if( pfn_nvocmp_hotItemMatch )
+  {
+    return pfn_nvocmp_hotItemMatch(hotItem);
+  }
+  return NULL;
+}
+
+/*********************************************************************
+ * @fn      hotItemUpdate
+ *
+ * @brief   If the parameter 'id' is a hot item, update the corresponding hot item data.
+ *
+ * @param   pg - The new NV page corresponding to the hot item.
+ * @param   off - The new NV page offset corresponding to the hot item.
+ * @param   hotItem - A valid NV item.
+ *
+ * @return  none
+ */
+static void NVOCMP_hotItemUpdate(uint8_t pg, uint16_t ofs, NVOCMP_hotItem_t hotItem)
+{
+  uint8_t nvNum = sizeof(NVOCMP_hotIdArray)/sizeof(NVOCMP_hotId_t);
+  uint8_t n;
+  for ( n=0; n<nvNum; n++ )
+  {
+    if( hotItem.cmpid == NVOCMP_hotIdArray[n].cid )
+    {
+      NVOCMP_hotIdArray[n].nv.pg = pg;
+      NVOCMP_hotIdArray[n].nv.ofs = ofs;
+      NVOCMP_hotIdArray[n].nv.vail = true;
+      return;
+    }
+  }
+
+  if( pfn_nvocmp_hotItemUpdate )
+  {
+    pfn_nvocmp_hotItemUpdate(pg, ofs, hotItem);
+  }
+}
+
+/*********************************************************************
+ * @fn      NVOCMP_hotItemMatchCont
+ *
+ * @brief   lookup NV in hot item when comparing content.
+ *
+ * @param   sysid - The sysid of item.
+ * @param   itemid - The itemid of hot item.
+ * @param   pInfo - pointer to item info.
+ * @param   pHdr - pointer to item header
+ *
+ * @return  none
+ */
+static bool NVOCMP_hotItemMatchCont(uint8_t sysid, uint16_t itemid, NVOCMP_itemInfo_t *pInfo, NVOCMP_itemHdr_t* pHdr)
+{
+  NVOCMP_hotNv_t* hotNv = NULL;
+  if( pfn_nvocmp_hotItemMatchCont )
+  {
+    hotNv = pfn_nvocmp_hotItemMatchCont(sysid, itemid, pInfo->cBuf, pInfo->clength, pInfo->coff);
+    if( hotNv )
+    {
+      NVOCMP_readHeader(hotNv->pg, hotNv->ofs, pHdr, false);
+      if((pHdr->stats & NVOCMP_ACTIVEIDBIT) && !(pHdr->stats & NVOCMP_VALIDIDBIT))
+      {
+        if((pHdr->sysid == sysid) && (pHdr->itemid == itemid))
+        {
+          return true;
+        }
+      }
+    }
+  }
+  return false;
+}
+
+/*********************************************************************
+ * @fn      NVOCMP_hotItemUpdateCont
+ *
+ * @brief   Update hot item that it can be lookup faster when comparing content.
+ *
+ * @param   hotItem - The hot item.
+ * @param   cBuf - pointer to caller's read data buffer
+ * @param   clen - length of NV data to return
+ * @param   coff - offset of content in data
+ *
+ * @return  none
+ */
+static void NVOCMP_hotItemUpdateCont(NVOCMP_hotItem_t hotItem, void *cBuf, uint16_t clength, uint16_t coff)
+{
+  if( pfn_nvocmp_hotItemUpdateCont )
+  {
+    pfn_nvocmp_hotItemUpdateCont(hotItem, cBuf, clength, coff);
+  }
+}
+
 #ifdef ENABLE_SANITY_CHECK
 /******************************************************************************
  * @fn      NVOCMP_sanityCheckApi
@@ -5054,7 +5326,16 @@ static uint32_t NVOCMP_sanityCheckApi (void)
     uint8_t srcPg;
     uint32_t ret = NVINTF_SUCCESS;
     uint32_t aItem=0;
+#ifdef NVOCMP_GPRAM
+    uint32_t vm;
+    uint8_t *pTBuffer = RAM_BUFFER_ADDRESS;
+#else
+    uint8_t *pTBuffer = (uint8_t *)tBuffer;
+#endif
 
+#ifndef NVOCMP_GPRAM
+    memset(tBuffer, 0, sizeof(tBuffer));
+#endif
     // Reset Flash erase/write fail indicator
     NVOCMP_failW = NVINTF_SUCCESS;
 
@@ -5075,6 +5356,9 @@ static uint32_t NVOCMP_sanityCheckApi (void)
 
     NVOCMP_ALERT(false, "Sanity Check")
 
+#ifdef NVOCMP_GPRAM
+    NVOCMP_disableCache(&vm);
+#endif
     while(srcOff > endOff)
     {
         if(NVOCMP_failW == NVINTF_SUCCESS)
@@ -5144,6 +5428,12 @@ static uint32_t NVOCMP_sanityCheckApi (void)
             {
               if(!needSkip)
               {
+                // Get block of bytes from source page
+#if NVOCMP_COMPR
+                NVOCMP_read(srcPg, crcOff, (uint8_t *)(pTBuffer + dstOff), itemSize);
+#else
+                NVOCMP_read(srcPg, crcOff, (uint8_t *)(pTBuffer + FLASH_PAGE_SIZE - dstOff - itemSize), itemSize);
+#endif
                 dstOff += itemSize;
                 aItem++;
               }
@@ -5153,6 +5443,9 @@ static uint32_t NVOCMP_sanityCheckApi (void)
         }
         else
         {
+#ifdef NVOCMP_GPRAM
+            NVOCMP_restoreCache(vm);
+#endif
             // Failure during item xfer makes next findItem() unreliable
             NVOCMP_ASSERT(false, "SANITY CHECK FAILURE")
             ret |= (1 << NVINTF_FAILURE);
@@ -5161,11 +5454,18 @@ static uint32_t NVOCMP_sanityCheckApi (void)
 
     if(NVOCMP_failW != NVINTF_SUCCESS)
     {
+#ifdef NVOCMP_GPRAM
+        NVOCMP_restoreCache(vm);
+#endif
         // Something bad happened when scanning the page
         NVOCMP_ASSERT(false, "SANITY CHECK FAILURE")
         ret |= (1 << NVINTF_FAILURE);
     }
 
+#ifdef NVOCMP_GPRAM
+    NVOCMP_restoreCache(vm);
+#endif
+
     return(ret);
 }
 #endif

    如果有人尝试了第二部分(TCLK 表内存缓存)、我欢迎您的贡献。

  • 0
    TI__Guru**** 2463330 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    我已经研究了 Silabs 的设计理念。 信任中心绝不会将加入者的 APS-Key 存储在其 NV-RAM 中。 当信任中心需要加入者的 APS 密钥时、信任中心将从加入者的 IEEE 地址和信任中心的 APS 密钥计算加入者的 APS 密钥。 信任中心仅在 NV 中存储加入者的安装代码、并在加入者加入后将其删除。

  • 0
    TI__Guru**** 2463330 points
    请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

    这将是相当令人敬畏的,虽然我猜 APS 密钥也将需要一个 ZC 已知的秘密在它的代.

    否则，只需通过 IEEE addr 即可撤消通信，该地址不一定是安全密钥。

    如果您有兴趣查看它的原型、