Some questions about nRF5340

[JohnCC]

Hi,

      We have used 52840 & 52832 for many years for our products. Now, we have a project that we have to use 5340 and evaluate the feasibility.

We have already studied some documents but some questions need your help to clarify.

1. 8340 can't use old SDK. Like we used on 52840(SDK17). We need to change to NCS from SDK. Is it right?

2. How about softdevice? Because We need to use ANT and BLE function,we need to get softdevice version from ANT+(S332 or S340). If we use 5340, do we need to get softdevice?

3. I saw that 5340 mainly supports zephyr os. Does it support freertos?

4. Does NCS project example have supported IAR or Keil?

Thank you.

John.

   

[Simonr]

Hi John

1. Correct, the nRF5340 is only supported by the nRF Connect SDK (NCS). Please check out the "Working with nRF53 series" to get started.

2. Very recently we released the ANT stack for the nRF5340 and NCS as well, if you have a user on ANT's web site you can find the details on how to implement it in your project.

3. Only the Zephyr RTOS is officially supported for the nRF5340 series.

4. No, the NCS only supports SEGGER Embedded Studios (up until v1.9.1) and VS Code (with the nRF Connect extension, all versions). 

Best regards,

Simon

[JohnCC]

Hi Simon,

     Thank you for your information. We already have used NCS and VS Code to build a example on DK board.

But one more question. If We need to use Zephyr RTOS and BLE/ANT function.

Can you give us a suggestion. Which example should we start with?

Because We use zephyr/samples/bluetooth/peripheral_hr example. But we We didn't see any OS architecture.

Or Is there any document for reference?

Thank you.

John.

[Kenneth]

To get familiar with how to take advantage of the zephyr RTOS I suggest to run through:
https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ 

You can find an overview of various examples in the zephyr and nrf connect samples here:
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/samples.html 
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/samples/index.html#samples-and-demos 

For the ANT examples you need to register and login to www.thisisant.com, then you can find the following description on how to add the ANT repository and ANT examples to nrf connect sdk:
https://www.thisisant.com/developer/ant/nrf-connect-sdk 

Best regards,
Kenneth

[JohnCC]

Hi Kenneth,

       Thank you for your information. One more question.

If I use zephyr/samples/bluetooth/peripheral_hr as our code base to build our project. If we want to use SPIM to control our sensor.

Can I use C:\ncs\v2.2.0\modules\hal\nordic\nrfx\samples\src\nrfx_spim\non_blocking to do this function. Or I must use ncs\v2.2.0\zephyr\drivers\spi\spi_nrfx_spim.c to do? Because I think that I can move our source code from old 52840 project(SDK17). Originally we were referring to C:\ncs\v2.2.0\modules\hal\nordic\nrfx\samples\src\nrfx_spim\non_blocking. Maybe we can speed up development.

Thank you.

John. 

[Kenneth]

I have not looked at the two examples you refer to, but either should work (it should be just a different level of abstraction/api).

Kenneth

[JohnCC]

Hi Kenneth,

    

    I have already added a example(zephyr/samples/bluetooth/peripheral_hr) to build our project. But I meet a problem.

We have used EmbeddedWizard lib from third party to draw display UI. I added EmbeddedWizard  source and include file to our code base. But I got a fatal error as below.

e:\1_John_Project\Nordic_5340_app\peripheral_hr_mytest\src\EmbeddedWizard_M2\PlatformPackage\RTE\ewextrte.c:71:10: fatal error: setjmp.h: No such file or directory
71 | #include <setjmp.h>

I feel that zephyr has not been able to include all c standard files. Only the following

Where should I include other files? How to write cMakeLists.txt?

Thank you.

John