Cannot able to communicate with external target

[Kushagra12]

Hi,

I am trying to flash one external module which is actually a BLE having (NRF52832) and I am using NRF52832 Development board. By doing all the necessary connections and using the DC power supply and setting the current and voltage to 11mA and 3.7V respectively. While running I am getting this error 

Connecting ‘J-Link’ using ‘USB’

Loaded /Applications/SEGGER Embedded Studio for ARM 7.22/bin/libjlinkarm.dylib

Firmware Version: J-Link OB-nRF5340-NordicSemi compiled Nov 7 2022 16:22:01

DLL Version: 7.88c

Hardware Version: V1.00

Target Voltage: 3.300

Device "NRF52832_XXAA" selected.

Current Speed: 2000 kHz

InitTarget() start

InitTarget() end - Took 102ms

Failed to attach to CPU. Trying connect under reset.

InitTarget() start

InitTarget() end - Took 106ms

Failed to connect to target.

Please help me. What steps do I need to follow now. I am getting stucked  

[Håkon Alseth]

Hi,

 

Q1: How is the connection between the nRF52-DK and your custom board?

Q2: Has your current setup worked at some point? Or newer at all?

Q3: Could you try to recover the board using nrfjprog --recover?

 

Kind regards,

Håkon

[Kushagra12]

hello Sir,

Thanks for your response.

A1: so I am following this connection, just used an external DC power source so the full connection is (image 2)

 

connections are good. I used probe station to connect the necessary pins of the custom board. From the probe station crocodile pins are connected to the respective pins of the NRF board

A2: No it never worked. This is the first time I am using this type of setup, though trying to connect it since past one month but was not able to connect.

A3: Sir, can you please tell me how to recover the board using nrfjprog --recover? I am not aware of this.

Please let me know if you need any further information.

Thanks and Regards,

Kushagra

[Kushagra12]

yes it is a pre made module

[Håkon Alseth]

Hi,

 

Thanks for clarifying.

Those should if you power it, and connect a debugger to the SWD pins.

 

Can you attach the log file generated after executing "nrfjprog --recover -f nrf53 --log"?

Kind regards,

Håkon

[Kushagra12]

yes, it is a pre made module.

[Kushagra12]

hi, sorry for the delay when I am running the nrf--jprog  in terminal.. I am getting this

[Kushagra12]

Hi, now after re-verifying the connections. I am getting this. Please have a look and what it can be done. Please help (last lines of codes)?

Connecting ‘J-Link’ using ‘USB’
Loaded C:/Program Files/SEGGER/SEGGER Embedded Studio for ARM 7.22/bin/JLink_x64.dll
Firmware Version: J-Link OB-nRF5340-NordicSemi compiled Nov 7 2022 16:22:01
DLL Version: 7.88m
Hardware Version: V1.00
Target Voltage: 3.300
Device "NRF52832_XXAA" selected.
Current Speed: 2000 kHz
InitTarget() start
InitTarget() end - Took 2.41ms
Found SW-DP with ID 0x2BA01477
DPIDR: 0x2BA01477
CoreSight SoC-400 or earlier
Scanning AP map to find all available APs
AP[2]: Stopped AP scan as end of AP map has been reached
AP[0]: AHB-AP (IDR: 0x24770011)
AP[1]: JTAG-AP (IDR: 0x02880000)
Iterating through AP map to find AHB-AP to use
AP[0]: Core found
AP[0]: AHB-AP ROM base: 0xE00FF000
CPUID register: 0x410FC241. Implementer code: 0x41 (ARM)
Found Cortex-M4 r0p1, Little endian.
FPUnit: 6 code (BP) slots and 2 literal slots
CoreSight components:
ROMTbl[0] @ E00FF000
[0][0]: E000E000 CID 00000000 PID 00000000 ???
[0][1]: E0001000 CID B105E00D PID 003BB002 DWT
[0][2]: E0002000 CID B105E00D PID 002BB003 FPB
[0][3]: E0000000 CID B105E00D PID 003BB001 ITM
[0][4]: E0040000 CID B105900D PID 000BB9A1 TPIU
[0][5]: E0041000 CID B105900D PID 000BB925 ETM
Preparing target for download
Executing Reset script TargetInterface.resetAndStop()
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Failed to preserve target RAM @ 0x20000000-0x2000FFFF.
Failed to prepare for programming.