how to get the IQ from my serial?

RE: how to get the IQ from my serial?

user75734 — Wed, 25 May 2022 07:59:08 GMT

Correct. Well, we use a serial interface to print the IQ samples, you're welcome to implement MQTT in the Direction Finding samples on your end, but we don't have a sample project already doing this. You can check out the documentation on the MQTT here.

Just to clarify the sampling, are you expecting the IQ sampling to start over after you have gotten the 45th IQ sample, or do you not see any of the samples in your terminal program where you expect to see these 45 samples?

Yes, we're familiar with the ISP1907-AOA-DK. The antenna array is based on our design. What exactly do you need to know about it? It's a 12 antenna array that should work out of the box with our Direction Finding connectionless TX and RX samples in the nRF Connect SDK. Here is its datasheet: https://www.insightsip.com/fichiers_insightsip/pdf/ble/ISP1907/isp_ble_DS1907_AOA.pdf

Best regards,

Simon

RE: how to get the IQ from my serial?

user114049 — Tue, 24 May 2022 07:40:15 GMT

ok,thanks for your advice.what you mean are that you don't supply the interface to get the IQ sample.

I understand some information about MQTT.The silab have adopted that using MQTT as a receiver get the iq samples.

"I'm sorry, but I still don't understand your predicament of the IQ samples only being printed once. What happens after the first sample period, do you start transmission again or does the advertiser/scanner stop running?" means that every running the procedure you noly get the samples.when i see that output in serial of Rx.But we know that iq sample after a period IQ sample can be sent to serial.but my procedure can only get one period.

thanks.do you know the ISP1907 Angle of Arrival Demo Kit ?if you know , please tell me the more information.

RE: how to get the IQ from my serial?

user75734 — Tue, 24 May 2022 07:27:16 GMT

Currently we do not have an interface to get the IQ sample for the solution in NCS. You can contact the regional sales manager (RSM) of your area to get information on whether this is planned for or not, as we don't discuss possible future applications/features we don't know anything about here on DevZone. If you don't know who the RSM is you can get in touch by filling in our sales related questions form.

I'm sorry, but I still don't understand your predicament of the IQ samples only being printed once. What happens after the first sample period, do you start transmission again or does the advertiser/scanner stop running?

Best regards,

Simon

RE: how to get the IQ from my serial?

user114049 — Mon, 23 May 2022 12:59:04 GMT

ok,thanks for your answer.I can get the IQ sample for 45 everytime.Beacause i want to get the RTSL.so i get the everytime IQ samples to transmit to my angle caculating procedure.

i run a script of python serial.i only ret the IQ sample once.have you see that the MQTT to transmit the data?

do you have some interface to get the IQ sample directly?

looking forward to your reply.

RE: how to get the IQ from my serial?

user75734 — Mon, 23 May 2022 12:36:19 GMT

Glad to hear you got it up and running, and thank you for sharing your solution here. I'm not sure what you mean by only being able to get the IQ data once. What happens after the first sample period, do you start transmission again or does the advertiser/scanner stop running?

Best regards,

Simon

RE: how to get the IQ from my serial?

user114049 — Mon, 23 May 2022 06:43:20 GMT

yes,i have solved the problem.I use the serial module to get the IQ values.Them i use string methed to get the IQ values and save them in my files.

i find my IQ values only can be getted once.is there a way to get the dynamic iq values ?

I see that the IQ sample of silab can be transmitted to MQTT.

do you know this?thanks,i am looking to forward to your reply.

RE: how to get the IQ from my serial?

user75734 — Fri, 13 May 2022 11:42:22 GMT

The IQ samples seem to be printed correctly in your serial terminal, so that's good. Here on DevZone we focus on Nordic Semiconductor products, and I think this python script of yours to output it in a different terminal is outside of the scope of this forum. Please try a forum like Stack overflow or similar for this kind of question. It's not related to technical support with Nordic devices.

Best of luck and regards,

Simon