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LAUNCHXL-CC1352R1: Z-Stack under 1 GHz

Part Number: LAUNCHXL-CC1352R1
Other Parts Discussed in Thread: Z-STACK

We are trying to Zigbee on the CC1352's to run on a <1 GHz channel.  We need to try to get some additional wall penetration and there's already a lot of SW surrounding this. Being able to keep it Zigbee at the gateway and in the devices would save a a lot of other development around changing stacks

I have been experimenting with a couple of 1352R launchpads and working with the TI 15.4-Stack sensor and collector examples and the Z-Stack zc_light.  I have a process for merging the generated ti_154stack configuration into the zc_light project in such a way that it should be using the 15.4 configuration at the MAC layer. This ends up using the generated ti_radio_config.[ch] and other files changing only a very few things in ${PROJECT_ROOT}/Stack

I have some confidence that process is basically working.  When I do this with TI 15.4-Stack settings in the 2.4GHz band the combined system will run, connect and function.

When I base the system on settings for  <1GHz the Z-Stack is unable to start the network. On attempting to start the stack as a coordinator:

  • During ZDO_StartDevice stack it calls NLME_NetworkFormationRequest which returns SUCCESS
  • Later  nwk_ScanPANChanSelect calls ZDO_NetworkFormationConfirmCB with status ZNwkStartupFailure (0xC4)

There's so many places this could be going wrong. Whatever is failing is happening in one of the SDK libraries, apparently simplelink_cc13x2_26x2_sdk_5_10_00_48/source/ti/zstack/lib/ccs/libZStack_nwk_all_ccs.a

Without symbols trying to figure out just what is failing is difficult. 

Any suggestions on how to narrow the failure?  That will let me plan or at least help determine the viability of the plan.