Thx, it works. I (56) boot: ESP-IDF v2.1.1 2nd stage bootloader The toolchain has been updated since IDF 2.1.1 has been released, and it has changed in a non-backwards-compatible way. You need to use the toolchain linked to in IDF 2.1.1 documentation: https://esp-idf.readthedocs.io/en/ v2.1.1 /get-s...

i know the root cause of my original question post before. i used "-b" option during git checkout, and it's pointing to HEAD of v3.1-dev After switching to tag v2.1 successfully, new issue comes. hello_world cannot complete build In file included from /home/edward/workspace/esp/xtensa-esp32-elf/xten...

I'm new here, so I cannot answer you directly, this is the "make flash" dump. Flashing binaries to serial port /dev/ttyUSB0 (app at offset 0x10000)... esptool.py v2.1 Connecting..... Chip is ESP32D0WDQ5 (revision 0) Uploading stub... Running stub... Stub running... Configuring flash size... Auto-det...

I'm new to ESP32, please help me solving this newbie question. Following http://esp-idf.readthedocs.io/en/latest/get-started/index.html#updating-esp-idf , I tried to specify the SDK version to v2.1.1 with the following command. Remove ~/esp/esp-idf completely cd ~/esp git clone https://github.com/es...