NRF9160 custom board programming issue

[damianogiacomi]

Hi, I have my custom board for the nrf9160 ,

I was able to program it through the built in programmer of the nrf9160 dk but I have an issue, when I connect the VDD to the VDD_GPIO by soldering a bridge the programmer does not recognize the board, where the issue can ? Thanks in advance

[Øyvind]

Hello,

when I connect the VDD to the VDD_GPIO by soldering a bridge the programmer does not recognize the board,

What is VDD_IO (SW11) configured to? It should be configured to 3V to be able to program.

Kind regards,
Øyvind

[damianogiacomi]

 

[damianogiacomi]

Hi ok thanks for the advice, now somehow i menaged to obtain this:

Found Cortex-M33 r0p2, Little endian.
FPUnit: 0 code (BP) slots and 0 literal slots
Security extension: not implemented
CoreSight components:
ROMTbl[0] @ E00FF000
Target connection has been lost

Any hints ;)

[Øyvind]

Where did you get this information? 

What do you get if you run:

nrfjprog -i

One comment I forgot to mention yesterday, is that you need to check the temperature of the SiP. Having only one ground connection will make the device run hot, and this may break it.

Kind regards,
Øyvind

[damianogiacomi]

I am using the segger embedded studio and when I compile the solutin and try to connect the jlink it returns this, sorry for asking but where should I use this command? 

Thanks for the temperature hint I will probably design a different board but I would like to check if what I am doing is correct :)

[damianogiacomi]

The reset pin was not connected right, not it connects but it gives this hardfault exeption in the debugger

[damianogiacomi]

I have a question about what should be the reset pin impedance ?

[Øyvind]

damianogiacomi said:

I am using the segger embedded studio and when I compile the solutin and try to connect the jlink it returns this, sorry for asking but where should I use this command? 

 You run this using command prompt or similar.

damianogiacomi said:

The reset pin was not connected right, not it connects but it gives this hardfault exeption in the debugger

Difficult for me to say with little information. A hard fault usually means that you are writing to an area you are not allowed in your code. What are you trying to run? Is this a sample project or your own code?

damianogiacomi said:

I have a question about what should be the reset pin impedance ?

 I don't have these numbers at the moment, will ask our internal team.

BR,
Øyvind

[Øyvind]

damianogiacomi said:

I have a question about what should be the reset pin impedance ?

 It's a standard input with an internal pull-up of about 10kOhm.