I think I figured out that it is now due to the Watchdog reset occurring continuously. Here's a serial print of the resets happening. ets Jul 29 2019 12:21:46 rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) invalid header: 0xffffffff invalid header: 0xffffffff invalid header: 0xffffffff inva...

I have a custom design using the ESP32-D0WD-V3 and am seeing a weird glitch on several I/O pins. It is causing me to not be able to flash the ESP32. Here is a picture of the glitch that I am seeing. 9BE33D78-665C-46F8-A9CA-C7A2925F9920.JPG Yellow Trace = VDD for Flash Chip (VDD_SDIO) Green Trace = S...

I have a custom design with an ESP32-D0WD-V3 with an external Winbond W25Q80DVSNIG flash IC. When trying to flash a program onto the device I get this error message. [2/3] cd /Users/brentonyiu/esp/esp-idf/components/esptool_py && /usr/local/Cellar/cmake/3.22.1/bin/cmake -D I...u/esp/projects/hello_w...

I figured out that the reason the ESP32 wasn't sending data is because an external crystal is required. Once I added an external crystal to my design, I was able to communicate with the ESP32.

I have a custom design using the ESP32-D0WD-V3 SoC and i'm having trouble connecting to the device over UART. I am using the ESP32-Prog programmer to try and flash the target device. Using an oscilloscope with probes on CHIP_PU, TX, RX, and GPIO0, I can see that the data being sent over the RX line ...

Are the 40 MHz external oscillator and the 32 kHz external oscillator required for a ESP32-D0WD-V3 design? The technical reference manual says that the CPU Clock source is defined by the RTC_CNTL_SOC_CLK_SEL field in the RTC_CNTL_CLK_CONF_REG register. The default value for this field is 0 on Reset ...