Custom PCB with ESP32 WROVER: could not flash firmware in Arduino (boot mode problems)

_kosmo_
Posts: 1
Joined: Thu Aug 02, 2018 10:24 am

Custom PCB with ESP32 WROVER: could not flash firmware in Arduino (boot mode problems)

Postby _kosmo_ » Thu Aug 02, 2018 10:54 am

Hi experts,

I am trying to build my own PCB on base of ESP32 WROVER module. I've tried to use standard connection of FTDI chip (using mini USB female port on PCB), suggested here: https://cdn-learn.adafruit.com/assets/a ... 1494449413 and viewtopic.php?t=2233.

Image

Now, when I turn on DTR and turn it off - esp32 reboots, the same when I turn on RTS and turn it off, but not when both of them are turned on.

Problem: to enter BOOT mode to make it possible for esptool.py to connect and flash firmware I need to take wire and connect GPIO0 to GND manually - then it works.

But in ESP32-WROVER-KIT I don't need it! I just press "Upload" in Arduino IDE.

Question: what should I add to make this working as in WROVER-KIT?

spuzesp32
Posts: 9
Joined: Sun Jul 23, 2017 2:24 pm

Re: Custom PCB with ESP32 WROVER: could not flash firmware in Arduino (boot mode problems)

Postby spuzesp32 » Wed Aug 22, 2018 4:46 pm

I would love to know if you found the solution to this problem. Can anyone with expertise help?

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