--power_cycle_dut sometimes fails

inductivekickback / ppk_api

Command line interface for Nordic's Power Profiler Kit (PPK)

BSD 3-Clause "New" or "Revised" License

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Open inductivekickback opened 5 years ago

inductivekickback commented 5 years ago

Sometimes the --power_cycle_dut operation fails to reset the DUT.

To reproduce:

Select an example from the SDK that enters SYSTEM.OFF after some timeout (e.g. ble_app_uart)
Program the example onto a DK (e.g. PCA10040) that has SB9 cut
Attach the PPK to the DK and set the switches to use the DK's power supply
Wait for the DUT to go into SYSTEM.OFF mode
Perform an operation that includes --power_cycle_dut

inductivekickback commented 5 years ago

The same behavior happens when using the official nRF Connect GUI so this issue is probably a hardware problem.