Which likely means that the version of OpenOCD which you are using does not support SystemView yet. Which commit of OpenOCD are you using?

Please follow documentation section related to SystemView:
http://esp-idf.readthedocs.io/en/latest ... nd-options

(you seem to be using 'apptrace' command instead of 'sysview')

Can you record sleep time or wakeup time using an external clock? I would like to understand whether the sleep time actually varies like this, or the sleep time is correct but you are getting incorrect values from gettimeofday. It would be help if you post the code. I have fixed some inaccuracies re...

We have investigated this, and this is a bug in hardware design. ULP wakeup signal comes from RTC_SLOW_CLK clock domain while the clear signal is in RTC_FAST_CLK clock domain. Therefore ULP interrupt signal remains high for a relatively long time. If you clear the interrupt status, it will immediate...

I was able to reproduce this with an ISR triggered twice (instead of just once). Will investigate next week. In the meantime, the problem may be worked around by masking ULP interrupt in the ISR: CLEAR_PERI_REG_MASK(RTC_CNTL_INT_ENA_REG, RTC_CNTL_ULP_CP_INT_ENA); Another way to work around this is t...

WiFive: sorry, i haven't noticed that you also mentioned the register to set wakeup level. guillermop: The gist linked above *waits* while the input signal changes level again. You need to replace that part (https://gist.github.com/igrr/54f7fbe0513ac14e1aea3fd7fbecfeab#file-sleep_from_wake_stub_exam...

There is a single bit you need to set or clear in order to change wakeup trigger level:
https://github.com/espressif/esp-idf/bl ... eep.c#L236

The crash happens because fopen is returning NULL (can't open the file), and you are not checking the return value. Files added to the project do not automatically get uploaded to the device. The embedding feature suggested by kurtzweber is indeed the easiest way to achieve what you need, provided t...

Rudi,
Can you use idf-monitor (make monitor) when capturing log output? That tool will decode backtraces printed by the panic handler into source code file names and line numbers, which will make it easier to figure something out from the logs.

The datasheet says that RTC peripherals are powered down in hibernation mode. RTC controller is always powered up, and it includes RTC timer and one of the two GPIO wakeup sources (ext1).

Regarding external RTC chip support, no we don't have plans for adding such drivers to ESP-IDF.