Enter Bootloader mode in our Custom Project - nrf5340

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Wed, 12 Jun 2024 12:36:08 GMT

Hello,

I am glad to hear that your issue has been resolved.

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Wed, 12 Jun 2024 12:23:11 GMT

Hi,

Yes, the issue has been resolved now. Reason for this issue is that Internal 32 kHz clock is not initialized. After adding the line CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y to our build, it is working fine.
Now we can able to run the boot in our custom boards and it is working.

Thanks,

Jagan K

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Wed, 12 Jun 2024 09:28:16 GMT

Hello,

I have discussed this with Chandrasekhar Boyapati and shared a few of my findings. He was able to make it work. He will discuss the findings with you, and I hope that will resolve your issue.

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Mon, 10 Jun 2024 12:35:23 GMT

Hi,

Actually we done the boot build for our custom board and flashing the file in our board via Seggar.

After flashing, we are checking the log messages in UART1(P1.00 & P1.01) lines. In that we are getting the above message.

Also, we checked for log messages in other UART2, no messages were found. The thing, we would like to know that we done the Build configuration correctly or not?

Attached the "Waggle_boards.7z" build file for your reference.

Thanks,

Jagan K

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Mon, 10 Jun 2024 11:54:50 GMT

Hello,

In the image attached, I can see some communication between the terminal and your custom board. Could you tell me exactly what issue you are facing?

Kind Regards,
Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Fri, 07 Jun 2024 08:01:52 GMT

devzone.nordicsemi.com/.../Waggle_5F00_boards.7z

Hi,
We tried the building the custom board by following the "Exercise 2 – Custom board for a multi-core & TF-M capable SoC/SiP" steps, and able to choose custom board, build & flash using JTag.

But still we can't able to view uart terminals log, attached the image for UART message & custom builded file

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Thu, 06 Jun 2024 10:27:23 GMT

Hello,

Thanks for the update and clarification. Let me know if you come across any issues later.

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Thu, 06 Jun 2024 09:13:58 GMT

Hi,

Thanks for your support!.

Yes, I am trying to flash the bootloader into our custom design board for first time. I am on the process of building the boot for our custom board, our HW design looks fine and i got struck with initial boot.

Currently, I am facing some issue in building the boot for my custom board. I will let you know, if any assistance needed.

Thanks,

Jagan K

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Thu, 06 Jun 2024 07:49:28 GMT

Hello,

Sorry, I was sick, which caused a delay in responding.

Let's clarify a few things before moving further. I assume you are trying to flash your first programme to see whether the newly developed hardware is working fine. For flashing your first application, you are trying to put the custom board in the bootloader mode. But have you flashed the bootloader to your custom board? (I assumed you had done this and responded; sorry for that.) If not, you need to flash the bootloader (MCUboot). You can use J-Link for this. Build mcuboot for your custom board and flash it using the command-line tool.

To enter bootloader mode, you need to trigger the bootloader on your board. For triggering, have you configured it just like what is done in DK?

If your board enters bootloder mode, then you can generate a DFU package using nrfutil and flash it over UART. Read this blog on nRFutil for generating and flashing the DFU package.

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Mon, 03 Jun 2024 12:34:56 GMT

Hi Abhjith,

With J-Link, We can able to get the device detected and can read the device. Looks like there is no response in UART.

We need to flash our test build via USB/UART. what are the things need to be done from our side?

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Thu, 30 May 2024 12:57:28 GMT

Thanks.

What is the method for the USB flashing, not via UART.

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Thu, 30 May 2024 12:53:47 GMT

Hello,

The default baud rate is 115200 ( If you are using a pre-built bootloader from Nordic).

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Thu, 30 May 2024 12:33:05 GMT

I am doing the UART-USB conversion using the FT232R IC for the communication.
I tried in the terminal & Putty but nothing is running in the log even in normal mode. Even tried asserting the P0.18 to Low, but nothing is running.

I looked at Power section, it looks fine and same as in EVK. And can you please share the Baud rate, i need to confirm.

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Thu, 30 May 2024 12:08:24 GMT

Hello,

[quote user=""]but couldn't enter the Bootloader mode, even after asserting the P0.18 to low during RESET.[/quote]

AFAIK, this is enough to make the 5340 enter bootloader mode. Are you using a USB-UART adapter for flashing your custom 5340? Could you share some more details on the connection? Have you tried communicating to your board from a terminal (like by using nrfutil or by using a serial terminal like PuTTy)? Have you opened the device inside the nRF connect for desktop App? If so, what is the response from the device?

Kind Regards,

Abhijith

RE: Enter Bootloader mode in our Custom Project - nrf5340

Jagan K — Wed, 29 May 2024 13:05:09 GMT

Hi Abhijith,

Thanks for the support.

We need to do the DFU in our custom 5340 board over UART. But we couldn't do it, need instruction for the DFU in our device.
We got our SCH & PCB layout verified by team, now we completed the SMD and now started testing our device. We are trying to flash our device over UART. Device is turned ON, as I can check the power lines and it is same as in the EVK, but not able to flash.

Need support on this.

RE: Enter Bootloader mode in our Custom Project - nrf5340

Menon — Wed, 29 May 2024 11:48:31 GMT

Hello,

I wanted to let you know that I have been assigned to this case and have started looking into it. I am not sure if I understand your question correctly. Could you tell me what you are trying to achieve here? Are you trying to do a DFU over UART using MCUboot, or are you just trying to flash your custom 5340 board?

Kind Regards,

Abhijith