VDDPA shut down on custom board

RE: VDDPA shut down on custom board

JD — Thu, 27 Apr 2017 10:18:36 GMT

Solved by configuring the clock LF source to the internal RC as shown here since the custom board doesn't have a 32.768kHz crystal. I also edited the RAM size linker script to accommodate 16KB (QFAA device on custom board). By the way I also noticed that I had to erase the whole memory, then program the S130 SoftDevice (make flash_softdevice), then upload the user application (make flash).

RE: VDDPA shut down on custom board

bjorn-spockeli — Tue, 25 Apr 2017 07:08:40 GMT

Are you able to debug the ble_app_hrs_pca10028_s130 application on the custom board and verify that the example is running correctly?

RE: VDDPA shut down on custom board

JD — Mon, 24 Apr 2017 09:24:17 GMT

Nevermind, there was a short circuit on the layout between the SE pin of the BAL-NRF01D3 and GND.

Edit: After removing the BAL-NRF01D3 I'm still getting nothing at the VDDP, ANT1 and ANT2 pins.

RE: VDDPA shut down on custom board

bjorn-spockeli — Mon, 24 Apr 2017 09:16:33 GMT

Can you verify that the 16MHz crystal is correctly connected to your board, that the correct load capacitors are used and that you see a 16MHz singnal on the XC1/2 pins?