nRF52 DK boot problem after press IF BOOT/RESET button

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Edvin — Wed, 09 Sep 2020 09:10:04 GMT

You don't need to enter bootloader mode frequently. It is only if something happens, and the debugger chip becomes unresponsive.

[quote user="Smriti"]Then I tried to upload the ble and simple blinky code to my board, keil shows that the code is been uploaded but the board shows no rsponce. Please help.[/quote]

Perhaps you didn't program the softdevice? I am not sure exactly what example you refer to, but perhaps it is SDK17.0.0\examples\ble_peripheral\ble_app_blinky?

If so, you need to program the softdevice matching your DK. What DK do you use? And what Keil project did you open?

The project and softdevice that you should use depends on what nRF you are using.

nRF52832: Softdevice: S132, example: ble_app_blinky\pca10040\s132\arm5_no_packs\*.uvprojx

nRF52840: Softdevice: S140, example: ble_app_blinky\pca10056\s140\arm5_no_packs\*.uvprojx

The softdevice hex files are found in SDK\components\softdevice\[s132/s140]\hex\*.hex

You can program the softdevice using either "nrfjprog --program <path to softdevice.hex> --verify" or the nRF Connect for Desktop -> Programmer application.

Best regards,

Edvin

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Smriti — Wed, 09 Sep 2020 08:58:18 GMT

Hi, I entered boot loader mode, and I can come out of that, after following steps : 1) plug in the board with pressing if boot/reset button. And then downloading the file (suggested by you) in boot loader folder. I can connect nrf as it shows JLINK as gdrive on my computer. Then I tried to upload the ble and simple blinky code to my board, keil shows that the code is been uploaded but the board shows no rsponce. Please help.

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Smriti — Wed, 09 Sep 2020 08:56:37 GMT

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Smriti — Wed, 09 Sep 2020 08:53:27 GMT

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Edvin — Fri, 10 Jul 2020 06:43:42 GMT

Drag'n'Drop in Windows Explorer. Alternatively, copy it and paste it into the BOOTLOADER device.

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Aman_Uniolabs — Thu, 09 Jul 2020 12:25:25 GMT

Which software to use for dropping the "J-Link Interface MCU Firmware" ? Can you explain the process. I got the bin file for Interface MCU but i don't know how to flash it in Interface MCU

RE: nRF52 DK boot problem after press IF BOOT/RESET button

jowegele — Thu, 03 May 2018 12:25:29 GMT

Hi, a little hint from my side. Only after updating the nRF Connect to version 2.3.0 it worked for me. I was asked if I want to download the latest software on the DK. I agreed and after some seconds I could use it.

Going back to nrfConnect v1.1.1 it also works there now. Don't ask me why!

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Edvin — Mon, 19 Feb 2018 11:54:20 GMT

Hello,

If you enter the bootloader mode by holding IF BOOT/RESET while you power on the device, the programming chip is the one that enters bootloader mode, and hence, there is no contact to the nRF.

When you are in bootloader mode, just drag'n'drop the latest Segger file, found here, and power cycle the board when it is done copying. After this, you should be able to connect with nRF Connect or Keil. Note that it is probably the same firmware on the nRF that was installed before the reboot happened. Try erasing it using nRFgo Studio, or "nrfjprog -e" before trying to open the port in nRF Connect.

BR,

Edvin

RE: nRF52 DK boot problem after press IF BOOT/RESET button

jowegele — Mon, 15 Jan 2018 16:28:38 GMT

Hi there, I have experienced the same problem after pressing the RESET button. And I followed Remi's description. Now I'm back again, the nrf52 DK is recognized as a J-link device in Seggers J-Flash tool. But in nrf-Connect it will not work. Trying to use the nrf52 DK results in

Error occurred opening serial port.(NRF_ERROR_TIMEOUT)

I tried with nrf-Connect 1.1.0 and 2.2.1 having installed the latest command line tools. What do I do wrong? I use it to make firmware over the air. It worked for so long. I flashed some 50 PCBs last week and now this.

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Remi — Tue, 11 Oct 2016 22:43:29 GMT

@Job van Dieten on the board preview page under downloads. "J-Link Interface MCU Firmware for on-board debugger for nRF5x Development Tools"

RE: nRF52 DK boot problem after press IF BOOT/RESET button

Job van Dieten — Sun, 25 Sep 2016 15:45:03 GMT

Hi, I have run into the same problem, as a complete beginner i would just like to ask, where do i get the MCU FW?

RE: nRF52 DK boot problem after press IF BOOT/RESET button

louiey — Mon, 10 Aug 2015 01:29:58 GMT

Problem solved. Make the DK enter to BOOT mode with button press and copied MCU FW into disk and cycle the power and it makes work. Once user enter to BOOT mode, PDK removes its default FW??