Programming ISP1507 from nRF52 DK

[KPK]

Hi,

I am trying to program a custom board with ISP1507 chip from dynastream based on nRF52832 using the nRF52 DK. I have connected P20 on the DK to the chip as follows,

Board_VDD       ->    DK VDD and VTG (pin 2,3)
Board_GND       ->    DK GND and GND_DETECT (pin 8)
Board_SWDIO    ->    DK SWDIO (pin 4)
Board_SWDCLK  ->   DK SWDCLK

When I try to erase the chip with nrfjprog --eraseall I get "Cannot connect to any nRF Device. Please make sure the device is connected to the debugger and supplied."

When i try to read the chip ID with nrfjprog --memrd 0x10000060 --n 8 -f NRF52 as suggested in another post, "I get JLinkARM DLL reported an error. Try again."

I dont understand what the problem is. Is the chip fried or something?

EDIT: The log file while running nrfjprog --memrd 0x10000060 --n 8 -f NRF52 --log gives the following message

--------------------------------------------------------------------------------
nrfjprog --memrd 0x10000060 --n 8 -f NRF52 --log
nrfjprog verion 8.5.0
--------------------------------------------------------------------------------
FUNCTION: open_dll.
FUNCTION: open_dll.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: enum_emu_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_with_snr.
FUNCTION: connect_to_emu_without_snr.
FUNCTION: enum_emu_snr.
Device "NRF52832_XXAA" selected.
FUNCTION: read_device_version.
FUNCTION: read_device_version.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.
FUNCTION: close_dll.
FUNCTION: close_dll.

[Matt]

Can you take a picture of the connections between these boards and show it here? Have you tried the nRFgo Studio for programming and check the error messages there?

[KPK]

Posting a picture will not make sense because of the housing. But the conection is made like in this Question.

I tried nRFGoStudio too. It also says JLink ARM dll not found or no device found.

[Matt]

Wait... with nRFgo Studio if the remote target is not found it should display your DK (eg. PCA10040) info instead. And that "JLink ARM dll not found..." message seems to indicate something wrong with your pc and not the target h/w?

What do you mean by "not make sense because of the housing"???

[KPK]

You cannot see where the wires are connected in the custom board because it is a part of a cable input to the board. But I rechecked a few times that they are connected to the correct pins.

I get the message No device detected or readback protection may be set when I start the nRFgo studio with the custom board connected. When I choose recover I ger Jlink ARM dll reported an error.

When opened without the board connected, it displays the DK.

[Matt]

Do you have a breakout kit for your custom board so that you can manually connect it to the PCA10040? When you said "part of a cable input to the board" it almost sounds like you have a production board so does that mean the programming used to work before and now it is not working?

And one dumb question: you custom board is powered up separately, correct?