Automatic startup method by turning on the power

RE: Automatic startup method by turning on the power

Daichi — Thu, 19 Dec 2019 23:37:06 GMT

Hi,

When I tried it on another prototype board with the same component structure, I was able to write it well.
I think it's probably a board issue.

Thank you for your response.

RE: Automatic startup method by turning on the power

Amanda Hsieh — Thu, 19 Dec 2019 11:52:14 GMT

Hi,

Could you try to connect J-Link Command with SWD?

Did you power the external board? And is it running at the same voltage level as the nRF52840 DK?

Should make sure that SWDCLK/SWDIO and VTG+GND are connected on the nRF52840 DK, in addition to the board is powered and running at the correct voltage.

-Amanda H.

RE: Automatic startup method by turning on the power

Daichi — Thu, 19 Dec 2019 00:42:18 GMT

Hi, Amanda!

By using nRF Connect-Programmer, it was confirmed that ble_app_blinky could be written and executed on nRF52840 on the DK board.

However, when P19 Debug out is connected to another nRF52840, ble_app_blinky does not appear to start. But I confirmed that Debug is started from SEGGER.

RE: Automatic startup method by turning on the power

Amanda Hsieh — Wed, 18 Dec 2019 11:57:52 GMT

Hi,

You can use nRF Connect-Programmer to flash the image, e.g., ble_app_blinky_pca10056_s140 under \nRF5_SDK\examples\ble_peripheral\ble_app_blinky\hex for nRF52840DK.

-Amanda H.