Board: ESP32 - wroom
Core Installation version: ?
IDE name: terminal
Flash Frequency: 40Mhz
PSRAM enabled: ?
Upload Speed: 115200
Computer OS: Mac OS X
Description:
I'm getting the error message below. This is on a custom board we designed based off of the adafruit huzzah32 feather board. I've tried holding down the reset button before issuing this command and then letting it go, but it makes no difference.
I have some pins connected to voltage divider bridges (where a variable resistor is a pressure sensor), and these are currently pulled to ground since the sensors aren't connected. Are there some pins that need to be held high instead of low in order for this to boot and flash?
The thing I don't understand is that we're able to read the chip, its features, and the MAC address.
Code: Select all
Umars-MacBook-Pro-2:~ umar$ esptool.py --chip esp32 --port /dev/tty.SLAB_USBtoUART --baud 115200 --no-stub write_flash -z 0x1000 ~/Downloads/esp32-20190905-v1.11-274-g06661890d.bin
esptool.py v2.6
Serial port /dev/tty.SLAB_USBtoUART
Connecting........_
Chip is ESP32D0WDQ5 (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
MAC: 24:6f:28:46:31:7c
Enabling default SPI flash mode...
Configuring flash size...
Warning: Could not auto-detect Flash size (FlashID=0xffffff, SizeID=0xff), defaulting to 4MB
Erasing flash...
Compressed 1204416 bytes to 756253...
A fatal error occurred: Timed out waiting for packet header