NRF52840 won't receive from some TI CC2538 chips

I have two devices on TI CC2538 that having problems talking to the NRF52840 dongle.

  1. The channel is channel 11
  2. There are 8 devices using TI CC2538. Only two of them are having problems
  3. NRF52840 dongle ABSOLUTELY cannot see any packet from those two devices
  4. I tried three dongles. It is consistent.
  5. I doubted my own firmware. So I downloaded the NRF52840 sniffer and tried Wireshark. Same result! Those two devices disappeared in thin air from the dongle!
  6. TI CC2538 can see packets from all devices, regardless of TI or Nordic.
  7. TI CC2530 sniffer can see the packets from those two devices just fine.
  8. Signal strength is not a problem. I have readings of -63dBM and -70dBM from Hub and the devices are much closer to the NRF53840 dongle.

I can only think of some compatibility problem. I don't think it has anything to do with software at this point.

I have a feeling that this is serious and we need to find out why?

I can give you guys the devices for further analysis.

Parents
  • We go through the interoperability tests during the Thread certification, so it should have been ok when communicating with other Vendor thread devices if they have done the same. Also we recommend you to use the nRF Connect SDK instead of the nRF5SDK. nRF5 based SDK are old and are in maintenance mode only. All new features and fixes will be coming the nRF Connect SDK only. 

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  • We go through the interoperability tests during the Thread certification, so it should have been ok when communicating with other Vendor thread devices if they have done the same. Also we recommend you to use the nRF Connect SDK instead of the nRF5SDK. nRF5 based SDK are old and are in maintenance mode only. All new features and fixes will be coming the nRF Connect SDK only. 

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