Esp32 power consumption bug

dario.fresu
Posts: 2
Joined: Fri Sep 13, 2019 8:14 am

Esp32 power consumption bug

Postby dario.fresu » Fri Sep 13, 2019 8:32 am

Hi guys, I would like to know your suggestions on some issues that I have with my esp32 board.

I am using a DOIT kit to develop a low power consumption alarm system powered by a super cap. I was able to significantly drop the current consumption thanks to the ULP and deep-sleep.
Here is my problem, once the device reboots the current consumption is few mA (which is too high), however, if i plug in and out the USB the current consumption drops to normal deep-sleep consumption, around 100 uA (as it should be).
If I don't do the USB trick the current required stays in the mA range.

Do you have any thoughts on what is going on and how to solve it?

Thank you.

WiFive
Posts: 2677
Joined: Tue Dec 01, 2015 7:35 am

Re: Esp32 power consumption bug

Postby WiFive » Sat Sep 14, 2019 9:03 am

Have you tried disabling all the UART log output? Maybe it is waking up the USB chip?

dario.fresu
Posts: 2
Joined: Fri Sep 13, 2019 8:14 am

Re: Esp32 power consumption bug

Postby dario.fresu » Sat Sep 14, 2019 9:22 am

Thanks for your reply,
How will I achieve that with ESP-IDF?

Actually I also would like to completely disable Bluetooth and Wifi as I don't need them at all for my project, the best would be if they don't start at all, any idea for that too?

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