how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

RE: how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

Simonr — Fri, 19 Aug 2022 09:20:42 GMT

I think this should be possible to move to Python indeed, but you will be on your own I'm afraid.

Best regards,

Simon

RE: how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

swz_nordic — Thu, 18 Aug 2022 12:51:09 GMT

yes,i see that.i suppose that "The scanning device gets the IQ values from the bt_hci_le_iq_sample in bt_df_per_adv_sync_iq_samples_report" can be translated to a moudle by python.if i can use this , i can get the iq samples to my algorithm to get the angles. can it realize by yours?

RE: how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

Simonr — Wed, 17 Aug 2022 09:00:04 GMT

I'm not sure I understand what you mean by this. The scanning device gets the IQ values from the bt_hci_le_iq_sample in bt_df_per_adv_sync_iq_samples_report.

Best regards,

Simon

RE: how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

swz_nordic — Wed, 17 Aug 2022 01:59:38 GMT

sorry,i have develop the algorithm of AOA using python,but i must get serial IQ values to get the angle.i want to directly use the IQ values.how to solve it?i mens that i can use the HCI api to get the IQ values.about this, do you have a good idea?

RE: how to directly use the demo values of DF,I can use the python procedure to transfer the serial moudle to get the IQ samples.how can solve it?

Simonr — Tue, 16 Aug 2022 11:58:12 GMT

The raw IQ data that is transmitted must be converted into vector form to be reviewed properly. We don't have have any specific sample code showing this, but you can check out this page for information on the various formulas used to translate IQ data between polar and rectangular form. Nordic will not provide the direction finding algorithm I'm afraid. Users are expected to implement this themselves, or get help from a third party. We have third party partners that deliver the full package of beacon, antenna array, software as well as the direction finding algorithm like what U-Blox does with the XPLR AOA kits: https://www.u-blox.com/en/product/xplr-aoa-3-kit

Best regards,

Simon