Issue on CC26XX radio setup with frequency synth.

Chen Yuefan

I am currently trying to develop customized radio driver for CC26XX, now I have a big problem on powering on frequency synthesizer. The problem is that when I config CMD_RADIO_SETUP (for IEEE mode), I set .bNoFsPowerUp to 0 so that the FS should power up after the radio is set up. But on my board, I see the command status value is 0x0002 which means the operation is still running while the CMDSTA register is 0x01. And that status never changes.

So I am confused why the radio core doesnt finish the operation of FS power up and goes to status 0x0400(cmd_done)

Thanks in advance

Yuefan

over 10 years ago

0 JXS over 10 years ago

TI__Guru** 105180 points

Hello Yuefan,

Are you developing a custom BLE radio stack or proprietary mode stack? For BLE, I suggest taking a look at the "Humidity & Temperature Sensor Node" TI Design, a link to which can be found on the TI BLE Wiki.

Best wishes

0 Chen Yuefan over 10 years ago in reply to JXS

Intellectual 290 points

Thanks JXS, now I found the cause. I forgot to turn on XTAL to boot FS. In that case, FS never runs up.

0 svendbt over 10 years ago

TI__Mastermind 29650 points

Hi Chen,

Good to hear you found the reason. FYI, we are working on a TI RTOS-based radio driver that will be ready for the CC26XX in the December release.
It will initially be for proprietary mode but it can be a good starting point for proprietary stacks.

Regards,
Svend

0 Chen Yuefan over 10 years ago in reply to svendbt

Intellectual 290 points

Hi Svend

Glad that you keep working on delivering new platform for developers. Here now, we have new issues on our system, it seems that the radio unit keeps sending wrong data. And we checked it may be because we did not switch to HF XTAL. I just try to run the code which should switch to the HF osc, but it always failed. We are not using TIRTOS now, we want to build from scratch. So could you help us how to correctly source HF XTAL to the system? It is not very mentioned in detail in TRM.

Thanks

0 RajneeshS over 10 years ago in reply to Chen Yuefan

Expert 1955 points

Hi Chen,

How can turn on XTAL to boot FS. I am facing same problem which you are mention above.

Regards,
Rajneesh

0 CHS over 10 years ago in reply to RajneeshS

TI__Mastermind 18780 points

I am guessing your issue is related to loading the crystal to much, see answer on your own post e2e.ti.com/.../474052

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Issue on CC26XX radio setup with frequency synth.