CC1352P: Duplicate packet issue with sensor&collector examples - SDK 5.20 | Rx>Tx

Sameena Shaikh

Prodigy 145 points

Part Number: CC1352P

Hi,

SDK: SDK 5.20.

Hardware used: 2 sets of launchpad CC1352P(4 launchpads)

Mode: Frequency Hopping.

Software used: Sensor & collector example code

Minimal changes made to sensor collector project

The changes made on the example code were as follows:

* Enabled FH mode

* Added dummy data of 192 bytes in a packet to be sent from sensor to collector

* Tx - Rx stats added to compare output of each set.

* Kept PanId for one set as 0x0001 and changed for the other set 0x0009

* Kept Co-ord short address for one set as 0xAABB and changed for the other set 0xAABC

Tested with above changes for multiple attempts

In all tests performed the Rx packets were always greater than Tx packets.

This is the observation. When the FH mode is running on both sets of launchpad

We got this issue with SDK 3.40/4.40 & 5.20 on our application

With SDK 5.20 the issue is easily reproducible on example code with 2 Sets of launchpads

When sequence number is added and on reception side we get to know the packets are duplicated.

For example we get a packet with sequence number 144 twice.

This mostly happens when the number of retries are more than 1

Regards,

Sameena Shaikh

over 4 years ago

0 Sameena Shaikh over 4 years ago

Prodigy 145 points

0 Siri over 4 years ago in reply to Sameena Shaikh

TI__Guru* 85791 points

Someone will be assigned to look into this for you.

Siri

0 Marie H over 4 years ago

TI__Guru* 81261 points

Hi Sameena,

This is an interesting experiment.

Can you post a sniffer log of one of the networks?

Cheers,

Marie H.

0 Sameena Shaikh over 4 years ago in reply to Marie H

Prodigy 145 points

Hi Marie,

I have conducted the tests again and captured the sniffer logs.

I am not able to attach the sniffer log file here. Let me know how I can send it to you?

Below is the console log

0 Marie H over 4 years ago in reply to Sameena Shaikh

TI__Guru* 81261 points

Hi Sameena,

You can send it to me over PM or upload it one a site like dropbox and send me the link.

Cheers,

Marie H.

0 Sameena Shaikh over 4 years ago in reply to Marie H

Prodigy 145 points

Hi Marie,

Here is the link

https://www.dropbox.com/home/duplicate_packet_issue

The sensor collector example code with changes attached.

Sniffer logs attached.

0 Marie H over 4 years ago in reply to Sameena Shaikh

TI__Guru* 81261 points

Hi Sameena,

I'm not able to access the folder. Did you restrict access?

Cheers,

Marie H.

0 Sameena Shaikh over 4 years ago in reply to Marie H

Prodigy 145 points

Hi Marie,

I have not restricted access to it.

I have tried to open on different platforms and am able to access the link without any issues.

Can you try once again.

I will also give an alternate link to G-drive which contains the same folder.

https://drive.google.com/drive/folders/1HOr-LAbtyZaXH8ei3YJF0g_MXclEdMv_?usp=sharing

Please let me know if you are fAcing any issues.

Regards,

Sameena Shaikh

0 Marie H over 4 years ago in reply to Sameena Shaikh

TI__Guru* 81261 points

Hi Sameena,

I'm looking at your projects. From the files, it looks like the PAN ID is set to 0xFFFF for both the collector and sensor. This can explain the behavior that you're seeing. Can you set the PAN ID from start, at least on the collector side?

Cheers,

Marie H.

Sub-1 GHz

Sub-1 GHz forum

CC1352P: Duplicate packet issue with sensor&collector examples - SDK 5.20 | Rx>Tx