nRF52840 not working

[shibin s]

The nRF52840 custom board not working, Hardware is  verified  many times, The chip detection is proper but  after the code flashing it will go to the device protected,I tried BLE and LED blink code both are not working,  

[Jared]

Hi,

The error log indicates that the program thinks you're programming a nRF5340. Can you share the full device marking on the chip?

Could you also specify what kind of debugger you're using to program your custom board and share a picture of how you have connected it?

regards

Jared 

[shibin s]

Hi, Thank you for your response, Files and pics  related to this issue I attached bellow

We are using j-Link EDU for programming 

connection   

external power         J-link                         nRF52840

   3.3V          --->            VTref           ....>          3.3V

   GND          ....>            GND          ...>           GND

                                    SWDIO           ....>             SWDIO

                                   SWCLK            ...>            SWCLK

Fullscreen 2023-05-23T12_55_12.133Z-log.txt Download

2023-05-23T12:55:12.205Z DEBUG Application data folder: C:\Users\LANWARE\AppData\Roaming\nrfconnect\pc-nrfconnect-programmer
2023-05-23T12:55:12.310Z DEBUG App pc-nrfconnect-programmer v3.0.8 local
2023-05-23T12:55:12.310Z DEBUG App path: C:\Users\LANWARE\.nrfconnect-apps\node_modules\pc-nrfconnect-programmer
2023-05-23T12:55:12.310Z DEBUG nRFConnect 4.1.1, required by the app is (>=4.0.0)
2023-05-23T12:55:12.310Z DEBUG nRFConnect path: C:\Users\LANWARE\AppData\Local\Programs\nrfconnect\resources\app.asar
2023-05-23T12:55:12.310Z DEBUG HomeDir: C:\Users\LANWARE
2023-05-23T12:55:12.310Z DEBUG TmpDir: C:\Users\LANWARE\AppData\Local\Temp
2023-05-23T12:55:12.558Z INFO Using nrf-device-lib-js version: 0.6.8
2023-05-23T12:55:12.559Z INFO Using nrf-device-lib version: 0.14.13
2023-05-23T12:55:12.559Z INFO Using nrfjprog DLL version: 10.19.1
2023-05-23T12:55:12.559Z INFO Using JLink version: JLink_V7.80c
2023-05-23T12:55:13.224Z INFO Getting serialport options from persistent store {00000000-0000-0000-FFFF-FFFFFFFFFFFF}.pc-nrfconnect-programmer
2023-05-23T12:55:13.225Z INFO Getting serialport options from persistent store 000261006651.pc-nrfconnect-programmer
2023-05-23T12:55:13.225Z INFO Getting serialport options from persistent store .pc-nrfconnect-programmer
2023-05-23T12:55:15.526Z INFO Using @nordicsemiconductor/nrf-device-lib-js to communicate with target via JLink
2023-05-23T12:55:15.527Z INFO JLink OB firmware version J-Link V11 compiled Sep 22 2022 14:53:28
2023-05-23T12:55:15.527Z INFO Device family NRF52_FAMILY
2023-05-23T12:55:15.527Z INFO Device version NRF52840_xxAA_REV2
2023-05-23T12:55:15.528Z INFO Board version Unknown
2023-05-23T12:55:15.528Z INFO Loading readback protection status for Application core
2023-05-23T12:55:15.833Z INFO Readback protection status: NRFDL_PROTECTION_STATUS_NONE
2023-05-23T12:55:16.291Z INFO Parse memory regions for Application core
2023-05-23T12:55:16.293Z INFO Update files regions according to Application core
2023-05-23T12:55:16.293Z INFO Parse memory regions for file
2023-05-23T12:55:16.297Z INFO Device is loaded and ready for further operation
2023-05-23T12:55:16.298Z INFO Reading memory for NRFDL_DEVICE_CORE_APPLICATION core
2023-05-23T12:55:17.212Z DEBUG Client Id: ab9a5b0f-d008-40d1-a0d0-0bbddfa61593
2023-05-23T12:55:18.048Z DEBUG Google Analytics for category pc-nrfconnect-programmer has initialized
2023-05-23T12:55:23.830Z INFO Reading memory for NRFDL_DEVICE_CORE_APPLICATION core completed
2023-05-23T12:55:23.833Z INFO Parse memory regions for Application core
2023-05-23T12:55:24.395Z INFO Resetting device completed

[Jared]

Hi,

Are you able to recover the device if you use nRF Command Line Tools':

nrfjprog --recover

regards

Jared

[shibin s]

Hi , Our design did not come out RESET pin, then how can I fix this issue 

[Jared]

Hi,

Reset pin is not necessary to do a recover with nrfjprog.

Did you try to do a recover? What was the error log that you got? 

regards

Jared