Board Option for nrf52811 on NCS

[azwawe]

Hi everyone,

I am currently building a simple device using nrf52811 for microcontroller with a single sensor on that. I am planning to build the firmware using nRF Connect SDK and Zephyr as well. But when I want to try an example from the available list, there's no board for nrf52811. When I check on the available board, it only shows those 2 boards.

I am not sure if one of them is support with nrf52811 controller.

I also trying to implement using this nrf52840dk_nrf52811 option, but seems like it's not working and can't upload the firmware into my board.

Let me know if anybody has solution for this, I really appreciate. Thank you.

[Jared]

Hi there,

The nRF52811 doesn't have a dedicated development kit, instead we emulate the kit on the nRF52840 DK, which is why you see the nRF52840dk_nRF52811,

I also trying to implement using this nrf52840dk_nrf52811 option, but seems like it's not working and can't upload the firmware into my board.

Can you elaborate on exactly what that is not working, and any error message that you're getting?

regards

Jared 

[azwawe]

Hi Jared, thanks for your reply.

I was trying upload a simple "Hello world" zephyr with nrf52840dk_nrf52811 device selection to my nrf52811 chip.

In first attempt, it upload successfully, but I cant see any message on RTT. Also after trying to upload a new firmware again, J-link cant detect my nrf52811 anymore after that time.

When I check it on nrf connect desktop, J-link is visible but the device is not support. The error information said Unsupported device.

[Jared]

Hi,

Are you using a custom board? Have you applied an overlay that covers your board?

azwawe said:

In first attempt, it upload successfully, but I cant see any message on RTT. Also after trying to upload a new firmware again, J-link cant detect my nrf52811 anymore after that time.

What error message are you getting and how are you flashing to your board?

regards

Jared

[azwawe]

when I connect J-Link to my board, device not found in my vscode. But when I take it off and plug it in to another nrf chip, it's visible.

The way I flash it is only use flash on vscode after integrate it with nrf connect sdk and toolchain.

[Jared]

Hi,

Please answer this:

Jared said:

Are you using a custom board? Have you applied an overlay that covers your board?

azwawe said:

when I connect J-Link to my board, device not found in my vscode. But when I take it off and plug it in to another nrf chip, it's visible.

Can you share a screenshot of the error, and explain what debugger you're using and how it's connected to your board?

regards

Jared 

[azwawe]

Hi Jared,

Yes, I am using a custom board. 

Not apply yet because I just want to test a simple hello world first.

For the issue, it's just not showing my j-link serial number on vscode as usual. The way I connect is using bypass development kit J-Link to SWD SCL pin from devkit to my board.

[Jared]

Hi,

azwawe said:

Not apply yet because I just want to test a simple hello world first.

Ok, but eventually you need to know that the pins that the "Hello World" is printed out on are correct.

azwawe said:

For the issue, it's just not showing my j-link serial number on vscode as usual. The way I connect is using bypass development kit J-Link to SWD SCL pin from devkit to my board.

But let's solve this issue first. Can you share a screenshot of the error that you get in vscode when you try to connect to your board? Secondly, which devkit are you using to flash your custom board? Can you specify what you measure on VDD and share a picture that shows how you have connected the custom board to the debugger on your devkit?

regards

Jared