Resolvable Private Address

linghua liu

我在peripheral.c文件中加入如下代码，使能 Resolvable Private Address模式

stat = GAP_ConfigDeviceAddr(ADDRMODE_PRIVATE_RESOLVE, NULL);

if (stat != SUCCESS)
{
gapRole_state = GAPROLE_ERROR;
}
//Set timeout value to 5 minute
GAP_SetParamValue( TGAP_PRIVATE_ADDR_INT , 5);

我的问题是，本机如何获取这个Resolvable Private Address。

我用这个函数 GAPRole_GetParameter(GAPROLE_BD_ADDR, ownAddress) 获取到的都是public address, 固定的。

万分感谢！！

5 年多前

0 Kevin Qiu 5 年多前

TI__Guru* 82220 points

使用LE Read Local Resolvable Address Command

/**
 * Read Local Resolvable Private Address
 *
 * Get the current local Resolvable Private Address being used for the
 * corresponding local Public or Random (Static) Identity Address.
 *
 * @warning The local Resolvable Private Address being used may change after
 * this command is called.
 *
 * @par Corresponding Events
 * @ref hciEvt_CmdComplete_t with cmdOpcode
 *      @ref HCI_LE_READ_LOCAL_RESOLVABLE_ADDRESS
 *
 * @param localIdAddrType @ref Addr_type
 * @param localIdAddr     Local device Identity Address.
 *
 * @return @ref HCI_SUCCESS
 */
extern hciStatus_t HCI_LE_ReadLocalResolvableAddressCmd( uint8  localIdAddrType,
                                                         uint8 *localIdAddr );

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

Kevin 谢谢

0 linghua liu 5 年多前回复 linghua liu

Prodigy 210 points

还有我想再请教一个问题，peripheral怎么获取center设备的public Address?

0 linghua liu 5 年多前回复 linghua liu

Prodigy 210 points

比如说从机想获取手机安卓端的蓝牙Public 地址。我查询连接的蓝牙设备地址返回的是Private地址

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

gapEstLinkReqEvent_t *pPkt = (gapEstLinkReqEvent_t *)pMsg;

if ( pPkt->hdr.status == SUCCESS )
{
VOID osal_memcpy( gapRole_ConnectedDevAddr, pPkt->devAddr, B_ADDR_LEN );

这取决于central 设备,如果central设备本身用的是public 地址的话，那么得到的肯定就是public 地址。如果用的是random 的话，那么你每次得到都会不一样

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

也就是说如果central设备使用random地址的话，是无法获取central的public地址，是吗？即使在配对绑定后？
另外，我调用 extern hciStatus_t HCI_LE_ReadLocalResolvableAddressCmd( uint8 localIdAddrType,
uint8 *localIdAddr );
读取本机的Random地址，发现根本没有读出来，全是0

0 linghua liu 5 年多前回复 linghua liu

Prodigy 210 points

我是这样使用的
/*获取本机蓝牙地址*/
//GAPRole_GetParameter(GAPROLE_BD_ADDR, ownAddress);//public address
flag = HCI_LE_ReadLocalResolvableAddressCmd(HCI_RANDOM_DEVICE_ADDRESS, ownAddress);//private resolvable address

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

如果central设备使用random其他地址的话，用ReadLocalResolvableAddressCmd是无法获取地址的

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

我想知道的是本机（peripheral）使用的是ramdom地址，如何获取本机当前的Ramdom地址？是自己获取自己当前的Ramdom地址。

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

Random Device Address分为Static Device Address和Private Device Address，是设备设定后才会有的

可以查一下关于Random Device Address的说明

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

回到前面的问题
我在peripheral.c文件中加入如下代码，使能 Resolvable Private Address模式

stat = GAP_ConfigDeviceAddr(ADDRMODE_PRIVATE_RESOLVE, NULL);

if (stat != SUCCESS)
{
gapRole_state = GAPROLE_ERROR;
}
//Set timeout value to 5 minute
GAP_SetParamValue( TGAP_PRIVATE_ADDR_INT , 5);

设置好了以后，用手机的BLE_scanner APP去扫描设备，是不是扫描得到的设备蓝牙地址是变化的？（每5min改变）
我现在的问题是，我设备本身也需要获得这个变化的蓝牙地址，如何获取？

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

产生的地址以T_GAP(private_addr_int)为周期，定时更新，获取用我上面回复的命令



/**
   * @brief Configure Device Address
   *
   * Setup the device's address type.  If @ref ADDRMODE_PRIVATE_RESOLVE
   *              is selected, the address will change periodically.
   *
   * @note
   * If return value isn't SUCCESS, the address type remains
   * the same as before this call
   *
   * @par Corresponding Events:
   * If the device is correctly configured for @ref ADDRMODE_PRIVATE_NONRESOLVE ,
   * the calling task will receive in case PRIVACY_1_2_CFG Flag is Disabled
   * a @ref GAP_RANDOM_ADDR_CHANGED_EVENT of type
   * @ref gapRandomAddrEvent_t when the random address changes
   *
   * @param       addrMode - @ref Gap_Addr_Modes
   * @param       pStaticAddr - Only used with ADDRMODE_STATIC
   *                       or @ref ADDRMODE_PRIVATE_NONRESOLVE type.<BR>
   *                   NULL to auto generate otherwise the application
   *                   can specify the address value
   *
   * @return      @ref SUCCESS : address type updated
   * @return      @ref bleNotReady : Can't be called until @ref GAP_DeviceInit is called
   *                   and the init process is completed
   * @return       @ref bleIncorrectMode : can't change with an active connection
   * @return       or INVALIDPARAMETER
   */
  extern bStatus_t GAP_ConfigDeviceAddr( uint8 addrMode, uint8 *pStaticAddr );

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

我尝试用 HCI_LE_ReadLocalResolvableAddressCmd函数去获取，结果是全0

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

设置断点单步运行，看下进入 HCI_LE_ReadLocalResolvableAddressCmd的情况，参数有没有设置正确

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

uint8 RandomAddress[B_ADDR_LEN]；
HCI_LE_ReadLocalResolvableAddressCmd(HCI_RANDOM_DEVICE_ADDRESS, RandomAddress);//private resolvable address

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

linghua liu 说：
uint8 RandomAddress[B_ADDR_LEN]；

你这里面有数据吗

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

初始值全是0，调用函数HCI_LE_ReadLocalResolvableAddressCmd还是一样

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points



* @param localIdAddrType @ref Addr_type
 * @param localIdAddr     Local device Identity Address.
 *
 * @return @ref HCI_SUCCESS
 */
extern hciStatus_t HCI_LE_ReadLocalResolvableAddressCmd( uint8  localIdAddrType,
                                                         uint8 *localIdAddr );

第二个参数是要传入地址的，你传入的参数中没有数，读出来肯定是0

0 linghua liu 5 年多前回复 Kevin Qiu

Prodigy 210 points

第二个参数我输入本机的固定的那个蓝牙地址，出来也是一样。第二个参数又是输入又是输出？或者本机的RPA在哪里输出？

0 Kevin Qiu 5 年多前回复 linghua liu

TI__Guru* 82220 points

看下这里关于RPA的详细说明：file:///C:/ti/simplelink_cc2640r2_sdk_4_20_00_04/docs/ble5stack/ble_user_guide/html/ble-stack-5.x/privacy.html

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Resolvable Private Address