How to implement two Thingy52 voice intercom

RE: How to implement two Thingy52 voice intercom

runsiv — Wed, 05 Jul 2023 11:38:30 GMT

Hi,

What errors do you get?

Could you try to run " west flash" from the terminal in vscode?

There should not be any need for anything special

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Wed, 05 Jul 2023 02:14:23 GMT

Thank you very much. My j-link is j-link EDU Mini (10pins)

RE: How to implement two Thingy52 voice intercom

runsiv — Tue, 04 Jul 2023 12:19:13 GMT

Sorry for the delay. I will have access to a thingy52 tomorrow morning and test

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Mon, 03 Jul 2023 10:11:05 GMT

hi runsiv.
Thanks for your help, the current progress is that I should set up the VScode environment. And I can burn blinky's project to the right in the picture (nRF5340) on VScode via usb cable. But I found my j-link connecting to thingy52 to see if I could burn the new firmware and it didn't work. I was wondering if thingy52 has a special burner?

RE: How to implement two Thingy52 voice intercom

runsiv — Mon, 03 Jul 2023 08:11:37 GMT

Hi,

Could you elaborate a bit more what you are missing, just so that I can better help you?

To install the NCS SDK you can follow the our guide here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/installation.html

An overview of Build and Configuration is found here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/config_and_build/config_and_build_system.html

We have a good guide/example on how to use NCS SDK here at Dev Academy: https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ where we also have a course on BLE https://academy.nordicsemi.com/courses/bluetooth-low-energy-fundamentals/

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Mon, 03 Jul 2023 07:20:22 GMT

hi runsiv.
can you provide a more complete ncs sdk environment construction guide? i can't find relevant information online.
thank you very much.

RE: How to implement two Thingy52 voice intercom

runsiv — Fri, 30 Jun 2023 10:58:48 GMT

Hi, the dmic sample is a part of the samples in our NCS SDK.

As for Keil I have to look around, all the examples I gave you uses the NCS SDK and not nrf5SDK.

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Fri, 30 Jun 2023 09:49:39 GMT

hi runsiv.
Thank you very much. I think I can do it the way you think. But as for the example for dmic to record sound, is there any project about keil? Or I want to know if the sdk provided by the official website contains the code of the dmic part?

RE: How to implement two Thingy52 voice intercom

runsiv — Fri, 30 Jun 2023 08:12:58 GMT

Since we don't have any premade example for this you would need to combine some examples

So I would do the following:

1. Use the example for dmic to record sound https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/drivers/audio/dmic

2. Use one of the examples for BLE NUS service to send the data over UART. https://github.com/nrfconnect/sdk-nrf/tree/main/samples/bluetooth/peripheral_uart and https://github.com/nrfconnect/sdk-nrf/tree/main/samples/bluetooth/central_uart where once device would need to be the central and the other a peripheral.

3. Since the Speaker is PWM driven you can use the PWM blinky example as basis for your speaker https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/basic/blinky_pwm/README.html

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Fri, 30 Jun 2023 06:28:02 GMT

hi runsiv.
I honestly have no idea at the moment. Can you provide the simplest solution? Because all we need to test our current products is to be able to conduct intercom.
Or even simpler, we just need one thingy52 to transmit the voice, and the other thingy52 just need to play back the transmitted voice.

RE: How to implement two Thingy52 voice intercom

runsiv — Thu, 29 Jun 2023 12:48:17 GMT

Hi,

If half duplex is okey then it should be possible. Are you planning on using NCS or nrf5SDK?

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Thu, 29 Jun 2023 12:33:21 GMT

oh, I don't think full duplex is necessary. If we can, we can use half duplex. If I use my thingy52 button to speak, you receive my words, and then use your thingy52 and press button and speak that send audio to me. I think it can be done,right?

RE: How to implement two Thingy52 voice intercom

runsiv — Thu, 29 Jun 2023 12:29:20 GMT

Hi, from what I was able to find it looks like it does not have the bandwidth for simultaneously sending and receiving audio as you would with over a intercom. You would have a limited audio quality

Regards

Runar

RE: How to implement two Thingy52 voice intercom

kenyon — Thu, 29 Jun 2023 11:58:49 GMT

hi runsiv.
Maybe I don't quite understand your answer(Forgive my poor understanding)😭 What I want to know is whether two Thingy52s can do audio intercom without having to go through an app. The role equivalent of app was converted to thingy52.

I'm new to thingy52 right now, so I'm hoping to get a little more support from you on this product. Thank you very much!

best regard

RE: How to implement two Thingy52 voice intercom

runsiv — Thu, 29 Jun 2023 11:42:10 GMT

Hi,

From the comment in this case I don't think it would be possible

You can send voice messages over BLE and play them on another thingy, but for full duplex I would check out our nRF5340 Audio DK

You can look at this example on how to use the microphone https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/drivers/audio/dmic

I also see that the nrf52832 supports I2S so I would check out this example also https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.9.2-dev1/zephyr/samples/drivers/i2s/litex/README.html

Regards

Runar