CC1352P7: Minimisation of tuning time for frequency hopping

Alex Strelbytskyy

Expert 1960 points

Part Number: CC1352P7

Hello,

Minimisation of tuning time for frequency hopping mode using CC1352P7 requires having minimum parameters that must be changed and using fast commands. Frequency and power are changed using RF_postCmd() and they work properly.

If at some frequency point I need to change fundamental parameters such as: .centerFreq, .intFreq, .loDivider, can it be done without using time consuming operations (~20 ms) RF_open() and RF_close()?

Thanks,

Alex

over 1 year ago

0 Siri over 1 year ago

TI__Guru* 86751 points

You do not have to close and open the RF driver, but you will need to update the setup command. For a new setup command to take effect, the RF core needs to be powered down and then powered up again.

this is explained in the following post:

(+) RTOS/CC1310: RF_yield in EasyLink_setFrequency - Sub-1 GHz forum - Sub-1 GHz - TI E2E support forums

Siri

0 Alex Strelbytskyy over 1 year ago in reply to Siri

Expert 1960 points

Hi Siri,

I'm fine with changing power and frequency in many cases. The problem is when at some frequency point I need to change centerFreq, .intFreq, .loDivider, How should be changed these parameters without RF_open() and RF_close() ?

Thanks,

Alex

0 Siri over 1 year ago in reply to Alex Strelbytskyy

TI__Guru* 86751 points

This is explained in the post I referred you to.

You need to update the setup command to change centerFreq, .intFreq, and loDivider.
To make sure that the command is updated, you need to call

RF_control(rfHandle, RF_CTRL_UPDATE_SETUP_CMD, NULL);

and then you need to turn off the RF Core to make sure that the changes take effect:

RF_yield(rfHandle);

Siri