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Custom Board Development Issues

Hi Nordic Team!

Please find below attached the schematic for my custom nRF52832 proto board. The boards are already manufactured and are in the bringing-up stage. The designs have been made according to the reference schematics provided by Nordic. However, I am facing some issues with my board. 

Node - 02_Node.pdf

I am using Linux platform and soft-device s132 and armgcc compiler. I was able to flash successfully the example "blinky" code in the SDK path: "nRF5_SDK_15.0.0_a53641a/examples/peripheral/blinky" using nRF52 Development Kit's SWD pins in P20 headers. The connection is as follows:

VTG of DK -> VCC of custom board, SWDIO of DK -> SWDIO of custom board, SWDCLK of DK -> SWDCLK of custom board, GND DETECT of DK ->GND of DK and GND of custom board. 

You can see below the screenshot attached that shows successful flashing of the code. Since the DK retained its previous code, I assume that I successfully flashed my custom board and not the Development Board. Is this the right assumption?

However, after the code is flashed, my custom board does not seem to give me any required output. Since the blinky code originally toggles the GPIOs P0.17, P0.18, P0.19, P0.20 (LEDs 1, 2, 3 and 4 connected these pins in the DK), I checked to verify the output on these pins in my custom board pins and there is no voltage appearing across these pins and ground. I also checked by changing the pins for the LEDs in the code "nRF5_SDK_15.0.0_a53641a/components/boards/pca10040.h", but still could not get any output from these pins either.

I have been trying to troubleshoot this but couldnt find the error. Kindly suggest where and what could have gone wrong to result in this or what I can do in order to find where the problem lies. Is there some particular area I need to concentrate on? 

I will be expecting your valuable reply soon.

Thanks in advance.

Regards,

Jahan

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