Is it okay to develop nrf7002 without zephyr os?

[heavyjo]

Belows are that my development setup

sdk : sdk16

os : none

development tool : keil

To use the NRF7002, it is understood that the NRF CONNECT SDK must be used. However, upon inspecting the source files of the SDK, it was observed that the WIFI - NRF700x series files are referencing Zephyr.

1. In that case, to develop without Zephyr OS, it is likely necessary to use the nrfx library. Are there other methods available?

If developing directly using the nrfx library, would there be any issues with performance, such as MEMORY problems,
when implementing TCP communication and BLE communication with the NRF52840 + NRF7002 combination?
If there are examples of development using this approach, please provide them. Thank you.

2. Assuming the use of Zephyr OS, could there be performance and memory-related issues when implementing TCP communication and BLE communication on the NRF52840 + NRF7002 combination?

[Håkon Alseth]

Hi,

 

Unfortunately, there is no bare metal example available for nRF700x integration at this time.

Using nRF Connect SDK, the nRF5340 is the recommended host controller for the nRF700x-series, if you plan to run the full stack. There is a table that we update for each release here:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/releases_and_maturity/software_maturity.html#wi-fi-feature-support

2. Assuming the use of Zephyr OS, could there be performance and memory-related issues when implementing TCP communication and BLE communication on the NRF52840 + NRF7002 combination?

Yes, this will be problematic wrt. RAM usage, as the network stack will require quite alot. More information is shared in our documentation:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/device_guides/working_with_nrf/nrf70/developing/constrained.html#host-soc-support

 

Kind regards,

Håkon

[heavyjo]

Thnaks for your kindness reply.
Below is my last question

For the development of BLE + WiFi, are the possible combinations as follows?:

1. VSC + NCS + ZEPHYR + HW (NRF5340 + NRF7002)
2. VSC + NCS + ZEPHYR + HW (NRF52840 + NRF7002) (=NOT RECOMMEND)

[Håkon Alseth]

Hi,

 

heavyjo said:

For the development of BLE + WiFi, are the possible combinations as follows?:

1. VSC + NCS + ZEPHYR + HW (NRF5340 + NRF7002)
2. VSC + NCS + ZEPHYR + HW (NRF52840 + NRF7002) (=NOT RECOMMEND)

It will be very demanding to implement wifi+ble with a nRF52840, as you will run out of RAM. I would strongly recommend the first option, ie. using a nRF5340.

 

Kind regards,

Håkon

[selfcontrol]

Hello, Håkon Alseth.

When configuring BLE + WiFi coexistence, is there any documentation or information on how much memory BLE and WiFi occupy in the memory specs of the nRF52840 and nRF5340 respectively?

Thank you.