I realize this is not very specific to the ESP32, but I'm really stuck and would appreciate someone helping if they know the answer. I have a Segger J-Link which I am trying to use on a Macbook running MacOS Catalina 10.15.4, with openocd and GDB against an ESP32 board. The problem is that I can not...

-Configure ESP32 to boot faster. Will your production firmware really take >1.6s to boot? I highly doubt it. Tie GPIO_15 low, disable all debugging in menuconfig, etc. -Use a different external wdt with a timeout that meets your needs. -Modify the bootloader to feed your external watchdog. -Add som...

I thought it safest to have an external WDT. Can the ESP32's internal WDT work as reliably? I was under the impression that interna WDTs were of a software type.

Hi All... I have a board with an ESP32 and an STWD100 watchdog timer chip. The WDT is connected to the ESP EN pin through a jumper, which was included to make debugging easier. The WTD's EN pin is not used, as connecting it to the ESP32 could defeat its purpose. The timeout on the WDT is 1.6 seconds...

Thanks @MikeMoy, this problem is resolved. I has SCA and SDL backwards in the test app. Killed lots of time but that's what happens sometimes. Thanks for your suggestion, I'll keep that in mind for next time.

Great idea thanks, I'll do that and report back!

I designed a board and got my first prototype from an assembler. The board has an ESP32-WROOM-32U connected via I2C (module pins 26 (IO4) and 29 (IO5)) to an MCP23017 GPIO expander module. This is the only I2C device on this bus, which has 1K pullup resistors to VCC (3.3V). All three address pins on...

Thanks! I also emailed expressif support and they said: The two modules are pin-to-pin compatible. The main difference is that ESP32-WROOM-32UE integrates ESP32 ECO V3 chip, and has enhanced security boot and flash encryption. You can find more details about ESP32 ECO V3 here in our news letter: htt...

What's the difference between the ESP32-WROOM-32U and the ESP32-WROOM-32UE ???

Sorry to bump an old thread, but I don't understand the circuit posted by username. It seems if RTS is brought low, then EN will be pulled low through the transistor, but GPIO will remain pulled high because that transistor is now off. If DTR is brought low then GPIO_0 is pulled low as long as RTS i...