CCS/CC2640R2F: Regarding Secondary MAC Address

Kevin,

Thanks for your inquiry. I notified one of our team members about this thread and he will provide additional insights as soon as possible.

Regards,

Rafael

Hi Kevin,

During step 2 that you listed, are you pairing or bonding with the device, or only connecting to it? If you have bonded with the device then the information related to that connection is stored in NV, which would explain why you continue to see it even after resetting the device.

Best Regards,
Alec

Hi Alec,

1. I just use TI's STARTER APP on iOS Phone then click SERVICE EXPLORER when one of BLE5 devices on the listing be selected on step2

    It did not be pairing or bonding just connecting and show SERVICES listing on APP

2. They are different display on the DEVICE-NAME shown on Android Phone and iOS Phone reported as followings,

    (Case 1) In Android Phone system shows the SECONDARY MAC address always on the way both of ADVERTISING stage or RE-SCAN advertising

                   after quit  from CONNECTING

   (Case 2) In iOS Phone system shows the SECONDARY MAC address  on  ADVERTISING stage, but shows the PRIMARY MAC address

                 in RE-SCAN advertising after quit from CONNECTING, from now on the PRIMARY MAC address always shows on even RESET the device

                 or RE-START iOS Phone

3. I try to use TI's SNIFFER Tool to check the ADVERTISING message and found that the message bytes is packed by SECONDARY MAC address

    that means the device is advertising based on the SECONDARY MAC address by reading from NV which flashed by UNIFLASH Tool

Why are the different behaviors on Android and iOS Phone system? and how to fixed it?

Regards,

Kevin

Hi Kevin,

I will need some time to recreate this issue since I do not have the phone on hand. Also, is the image that you are flashing the device with one of our examples, or is it a modified application? If it is a custom application it would be helpful if you attached the image.

Best Regards,
Alec

Hi Alec,

Please wait for some time to prepare the image file

That's for verifying the difference behavior on Android and iOS Phones

Regards,

Kevin

Hi Kevin,

Additionally would you mind providing sniffer logs? They would be very helpful in understanding what is happening between your devices.

Best Regards,
Alec

Hi Alec,

1. Attached image file for checking,

    file inserted here, file name: E2E_check_Android_vs_iPhone.hex

2. The report on Android and iOS Phone,

    As following, Android Phone shows SECONDARY MAC address

                         iOS Phone       shows PRIMARY        MAC address

Regards,

Kevin

Hi Alec,

I try to attached image file, but failed!

Regards,

Kevin

Hi Alec,

Report the behavior on Andriod Phone and iOS Phone as following,

As you can see Android Phone shows SECONDARY MAC address

                         iOS Phone shows PRIMARY MAC address

Regards,

Kevin

Hi Kevin,

Thank you for uploading those images, they are indeed helpful. Could you upload some sniffer logs showing what you are seeing as well? I suspect there may be something going on "under the hood" here.

Best Regards,
Alec

Hi Alec,

Please wait a couple of days I will send the sniffer logs for checking

Regards,

Kevin

Hi Alec,

1. Please check attached file of "SnifferLog_forE2E.psd" as following,

SnifferLog_forE2E.psd

2. The secondary address is 0x12345E2EE2E in this logging file

Regards,

Kevin

Hi Alec,

1. Attached snapshot for checking,

    As you can see the secondary MAC address of "0x12345E2EE2E" can bee seen on Android Phone,

    but the iPhone shows the primary MAC address

Regards,

Kevin

Hi Kevin,

I am going to attempt to recreate this issue on my end. Is the image that you are flashing the device with from one of our examples, or is it from a custom project of yours? Is it possible to attach the hex/bin if it is a custom one?

Best Regards,
Alec

Hi Alec,

1. The HEX file attached as following,

     name is "E2E_checkSecondaryMac.hex"

  Notes: 

   I try to upload above HEX file but report message shows

   "An error occurred. Please try again or contact your administrator."

   Do you have another method to send this HEX file?

2. This HEX file is building up based on TI's BLE5 project0 lab

    The scanRspData[] and advertData[] had been replaced by

    string of prefix "E2E check" and pending <Secondary_MAC_address>

    so the scanRspData[] and advertData[] had the same meaning of "E2E check" and <Secondary_MAC_address>

    Notes:

    the  <Secondary_MAC_address> is read from NV memory which programmed by UniFlash Tool V6.1

Regards,

Kevin