CC2745R10-Q1: channel sounding Observations on SDK 9.11.01.13/16/19

Part Number: CC2745R10-Q1
Other Parts Discussed in Thread: CC2340R5

Tool/software:

Hello All ,

we are developing application on channel sounding using IDE ccs V20.2.0 and SDK 9.11.01.19 on Chipset CC2745R10 on car node side and CC2340R5 on key node side.

so we are facing some issues which are listed below,

  • when we are close < 1m then it is continuously showing distance of 0-1cm distance.
  • Distance Accuracy in 0 to 3.5mtr are fluctuating like 1.7m, 1m, 70cm, 2m, and in some angles it was up to 17m.
  • sometimes connection is getting established, but distance is not coming so we did system reset API for doing workaround so after that it starts giving the distance, but doing system reset is not the permanent solution it will hamper application in real scenarios.

    i have attached can logs for the same, you can see there.

 

for e.g-    0.488845 1 455             Rx   d 8 01 0E 01 00 00 00 00 00 (this is for example)

455 – this is CAN id.
8 – DLC
first byte 01- distance in meter.
second byte 04-distance in cm.
Third byte 01 – connection status (0 -not connected/ 1 - connected).


All these data are in hex format.

 In this case it is connected with providing distance of – 1m 14 cm.

  • Hello Amrendra, 

    1. The current Neural Network based algorithm tends to underestimate at close distances. The next SDK release will include improvements to our current algorithms. 

    2. See the response to the first question. 

    3. How frequently is this occurring? Is pairing successful? Do you have a sniffer log of the error? was the procedure enabled successfully after connecting? 

    Please provide a response to the questions on question 3. 

    Thanks,

    Isaac