ERROR when programming my custom pcb with NRF51288 DK PCA10028

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

MartinBL — Mon, 11 Sep 2017 12:37:24 GMT

No worries.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

Nguyen Hoan Hoang — Mon, 11 Sep 2017 10:43:52 GMT

Sorry it was my mistake. I was posting it in the comment but pressed wrong button.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

MartinBL — Mon, 11 Sep 2017 06:54:18 GMT

I have edited my first answer to show what @Nguyen Hoan Hoang and I mean.

Also, please stop converting comments to answers. It makes the thread very confusing. In an ideal world comments are meant for "brainstorming" and exchange of further details concerning the original question, while the answer is supposed to hold the actual and final answer.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

Nguyen Hoan Hoang — Sun, 10 Sep 2017 23:34:46 GMT

It written on the DK PCB. You just look for the pin that indicate 3.3V.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Sun, 10 Sep 2017 23:20:14 GMT

How can I get 3v3 from the DK? You could detail the connection of the pinout of DK and my custom PCB?

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

Nguyen Hoan Hoang — Sun, 10 Sep 2017 20:45:05 GMT

Sorry it's a typo. I meant the DK.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Sun, 10 Sep 2017 17:17:10 GMT

What is DL?

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

Nguyen Hoan Hoang — Sat, 09 Sep 2017 21:45:23 GMT

Use the 3.3V from the DL to power your device. Do not use external power, the DK does not have level shifter. If it still does not work, there are a few things to check: bad solder joins, missing ground connection, bad IC. First thing try to reflow your to make sure you have good solder joins. Clean all residual flux on the board.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Sat, 09 Sep 2017 21:42:01 GMT

ERROR: Communication timed out: Requested 20 bytes, received 0 bytes !

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Sat, 09 Sep 2017 21:28:15 GMT

I've applied 3.3v with a lab source and still can not program it.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

Turbo J — Sat, 09 Sep 2017 21:14:23 GMT

A CR2032 with only ~2.8V output is not enough to program an NRF51x successfully - you will need a full cell or another voltage source.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Sat, 09 Sep 2017 19:09:38 GMT

I already received J-LINK EDU. I connected my board this way. link text

I edited the original message and added an image of my routed PCB in altium. if someone could help me...

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

AmbystomaLabs — Thu, 07 Sep 2017 10:34:25 GMT

Are you using p19 or p20 on the DK?

Having the JLINK will certainly rule out issues with the DK sensing your board and switching to the debug port.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

miguebinario — Wed, 06 Sep 2017 23:57:16 GMT

My PCB is powered by a CR2032 battery and the VTEG pin transmits it to 2.85v. I have reviewed the schematic and routing of the PCB and apparently I have no short circuit and I have also checked the crystal checking that it is correct. When I do the baypass between VDD and VTEG (between the pins of the DK) when uploading the program the DK is reset and does not load the program on my custom pc.

I keep trying ...

I have purchased a JLINK to upload to the code, on Friday I receive it at home .... Can this be the solution?

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

MartinBL — Wed, 06 Sep 2017 14:08:59 GMT

So problem solved?

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

AmbystomaLabs — Wed, 06 Sep 2017 14:00:16 GMT

Good point. I forgot about that. I normally bypass vteg to the DK's VDD so I don't have to power remotely during programming.

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

MartinBL — Wed, 06 Sep 2017 11:26:09 GMT

Is your PCB powered by its own supply? You can not supply power through the Vteg pin. Vteg is just a voltage sensing pin and you need to power your PCB with ~2.8V to 3.3V.

EDIT: These are your options when connecting an external device to your DK for programming:

EDIT 2: Just a quick clarification regarding voltages. Some comments here suggests that you need more or less exactly 3.3V on your target device. The thinking being (I assume) that you need to have the same supply voltage on your target device and the Segger MCU on the DK. That is not entirely correct. The output of the 3.3V voltage regulator on the DK is actually closer to 3.2V. Then, due to the protection diodes on the DKs (shown in the schematic below) there is an additional ~0.5V voltage drop causing the entire system on the DK to be powered by ~2.8V. Hence, if your external board is powered by ~2.8V that is fine. It should also work to use a voltage on your target board a couple of 100 milliamps higher than the voltage on the DKs, but then you should use caution and use option 3 in the drawing above to avoid over voltages on the DK circuits. If you are not sure about what to do I recommend using option 2. That should be safe in most cases (unless your target device can't handle 2.8V).

RE: ERROR when programming my custom pcb with NRF51288 DK PCA10028

AmbystomaLabs — Tue, 05 Sep 2017 19:00:19 GMT

Have you tried nRFgo Studio to program it?

You should also double check that you didn't rotate the 16MHz xtal. It's a common mistake.

And, double check that vbat is really there after you hook up your board. You could have onboard shorts that you haven't discovered yet.