NRF52840-DK - can't run Get Started demos PCA10056/PCA10040

RE: NRF52840-DK - can't run Get Started demos PCA10056/PCA10040

Dazdranagorn — Sat, 16 Nov 2019 05:40:26 GMT

Of course I flash only *_s140_pca10056.hex files.

I found out the source of my problem. It is not a software.

Power switch U4 was mounted poorly, I found that it is disconnected from board a little bit.

According a schematic, I have to put a drop of solder on SB9.

And it helps. Leds blink in a proper way.

RE: NRF52840-DK - can't run Get Started demos PCA10056/PCA10040

Amanda Hsieh — Fri, 15 Nov 2019 09:17:03 GMT

Hi,

You need to program the chip with the correct FW, for the examples indicated in the names with either 'nrf52840' or 'PCA10056'. Some applications might work on e.g. nRF52840, even though it has been built for nRF52832, but you should not count on it.

In some cases, applications do run, but the different development kits (for nRF52832 and nRF52840) do not have LEDs and buttons connected to the same GPIOs, so the application is toggling the incorrect pins if not programmed with the correct version. This is why the BLE is working, but the LEDs do not flash.

The getting started guide links to the incorrect version. I apologize for the confusion, I will report this again.

-Amanda H.

RE: NRF52840-DK - can't run Get Started demos PCA10056/PCA10040

Dazdranagorn — Wed, 13 Nov 2019 07:05:21 GMT

Hello,

I've catch the same issue on nRF52840-DK PCA10056 1.1.0 2019.22.

BLE work nice but I can’t see led blink at all.

I tried some precompiled examples with BLE+LED+BUTTONS from SDK15.3 and SDK16.0

I found out that hi/low level appears on the led, but it is only 2.5V so that’s why there no led glow.

I powered up the coin battery + USB to J2. SW6 is “DEFAULT”. SW7 is “Def.” SW8 is on. SW9 is “VDD”. SW10 is off.

May be there is some special combinations of switches to push the voltage up?

PS. I updated onboard j-link by J-Link_OB-SAM3U128-V2-NordicSemi_170724.bin from DK start page.

PPS. I used SES to wipe flash by Target->Erase All.

RE: NRF52840-DK - can't run Get Started demos PCA10056/PCA10040

Amanda Hsieh — Thu, 09 May 2019 11:29:04 GMT

Hi,

NRF52840-DK should use the image for PCA10056. You can go here to download SDK 15.3 and use ble_app_proximity_pca10056_s140.hex under

<InstallFolder>\examples\ble_peripheral\ble_app_proximity\hex

You also can refer to the page of Proximity Application example for more detail.

Best regards,

Amanda