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NRF52 nrfjprog: ERROR: There is no debugger connected to the PC

zoltan

------------ EDIT Sep-21-2017 ----------------

I was able to work around the issue by trying on a Linux distribution. Here is a written guide to the package install and board connect process on Ubuntu 16.04: Warning! the guide is written for a total beginner to Linux/git/terminal and the software.

nRF52_with_Openocd.docx

Hello!

I am attempting to flash firmware to a nRF52 using the BMD-300-eval dev board using an JLink connection, also using openOCD. My software versions are as follows:

nrfjprog: version 8.5.0 JLinkARM.dll: version 6.20a (also tried 5.12f) OpenOCD version 0.10.0 nRF52_sdk: version 11.0.0

J-link USB driver: libwdi version 6.1.7600.16385

This has been working on another computer, but I am having trouble on my Windows 10 Home edition laptop.

After merging some binaries for the nRF5_SDK_11.0.0 BLE_peripheral example for the pca 10040, and successfully building the example, I tried to flash with the following command and output:

image of the command "mingw32-make flash_combined" and the resulting error "invalid command name nrf52"

After researching the "invalid command name nrf52" error, I was lead to try instead "nrfjprog" commands. My next attempt was using basic nrfjprog commands found at:

infocenter.nordicsemi.com/index.jsp

The results were:

nrfjprog commands "nrfjprog -f NRF52 --program combined.hex --chiperase" with the error "ERROR there is no debugger connected to the PC"

This error is strange because I CAN see the Segger J-link in my Windows "Device Manager" window. The driver version is stated above. I also tried switching and updating the drivers. Jlink Commander cannot establish a connection either.

Any help would be very much appreciated! Thanks!

-------------------------------------------- EDIT -------------------------------------------

Here are images of the properties and detail options as seen in Device Manager: nRF52 Jlink Debugger Issue.pdf

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  • 0

    I do not see any MSD JLINK device in computer next to my C: drive or anything. In device manager I see a USB device called J-Link. Its properties are described as a SEGGER USB device. It does still work on the other computer, however that computer is running a Linux distribution. I will edit the question to include images of the properties of the device as shown in Device Manager, and the menus it offers. Let me know if any of the characteristics in the 'Details' tab might offer you a clue, and i can post them.

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  • 0

    I do not see any MSD JLINK device in computer next to my C: drive or anything. In device manager I see a USB device called J-Link. Its properties are described as a SEGGER USB device. It does still work on the other computer, however that computer is running a Linux distribution. I will edit the question to include images of the properties of the device as shown in Device Manager, and the menus it offers. Let me know if any of the characteristics in the 'Details' tab might offer you a clue, and i can post them.

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