Set VDD feature is not working at all - PPK
selman-nus opened this issue · comments
Hi,
It was very disappointing to observe this error because I have submitted a report based on PPK results.
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I have just checked whether the VDD set feature of the PPK is working correct or not. I adjusted DUT to external and used my fluke multimeter to measure the output from the External DUT header. Readings were always 2.785 volts no matter what I did. You can see the log below.
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All the software is up to date and I checked every hardware connection twice.
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Is this same for everyone? Is it possible to fix this with a software update or is this hardware related issue?
2021-03-08T10:46:37.087Z INFO Validating firmware for device with s/n 000682699356
2021-03-08T10:46:37.125Z INFO PPK closed
2021-03-08T10:46:37.578Z INFO Opening device with s/n 000682699356
2021-03-08T10:46:37.598Z INFO Initializing the PPK
2021-03-08T10:46:37.929Z INFO SEGGER serial number: 682699356
2021-03-08T10:46:37.929Z INFO SEGGER speed: 2000 kHz
2021-03-08T10:46:37.929Z INFO SEGGER version: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00
2021-03-08T10:46:39.350Z INFO PPK started
2021-03-08T10:46:39.358Z INFO PPK opened
2021-03-08T10:47:13.157Z INFO Voltage regulator updated to 1980 mV
2021-03-08T10:47:15.693Z INFO Voltage regulator updated to 2041 mV
2021-03-08T10:47:18.752Z INFO Voltage regulator updated to 2916 mV
2021-03-08T10:47:21.933Z INFO Voltage regulator updated to 2838 mV
2021-03-08T10:47:23.566Z INFO Voltage regulator updated to 2803 mV
2021-03-08T10:47:26.703Z INFO Voltage regulator updated to 2725 mV
2021-03-08T10:47:52.389Z INFO Voltage regulator updated to 1850 mV
2021-03-08T10:47:55.933Z INFO Voltage regulator updated to 1963 mV
2021-03-08T10:47:57.934Z INFO Voltage regulator updated to 2396 mV
2021-03-08T10:47:59.805Z INFO Voltage regulator updated to 3600 mV
2021-03-08T10:48:14.382Z INFO Voltage regulator updated to 1900 mV
2021-03-08T10:48:29.607Z INFO Voltage regulator updated to 1950 mV
2021-03-08T10:48:35.752Z INFO Voltage regulator updated to 1950 mV
2021-03-08T10:48:35.842Z INFO DUT OFF
2021-03-08T10:48:36.998Z INFO DUT ON
2021-03-08T10:48:39.044Z INFO Sampling started
2021-03-08T10:48:41.952Z INFO DUT OFF
2021-03-08T10:48:43.433Z INFO DUT ON
2021-03-08T10:48:46.322Z INFO Voltage regulator updated to 2288 mV
2021-03-08T10:48:49.712Z INFO DUT OFF
2021-03-08T10:48:50.468Z INFO Sampling stopped
2021-03-08T10:48:52.306Z INFO Sampling started
2021-03-08T10:48:53.183Z INFO DUT ON
2021-03-08T10:48:54.505Z INFO Voltage regulator updated to 2505 mV
2021-03-08T10:48:57.239Z INFO Sampling stopped
2021-03-08T10:48:58.013Z INFO DUT OFF
I read PCA63511 on my PPK board. Rev 1.1.0 and date is 2018.26.
It sounds to me like you have the Power Select switch set to DK, and not Reg. Can you verify this? If set to DK, then the regulator setting will do absolutely nothing. I am testing with the latest software, and it's working correctly.
That being said, the output voltage is not completely accurate, so it's smart to verify with your voltmeter if you need a very accurate voltage setting.
Ups, I am so sorry, I haven't realized the power select switch was important. I tested with that config and it works as expected. Thanks for your fast advice!
No problem, glad it worked out for you. And indeed, the amount of analog switch setting was something we worked hard to get rid of for the PPK2 since it might be a source of confusion and easy mistakes.