- Toolchain version: esp32-2019r1
- Compiler version: 8.2.0
- ...
- ULP assembler version: 2.28.51-esp-20190801
- WARNING: ULP assembler version 2.28.51-esp-20190801 is not supported.
- Expected to see version: 2.28.51.20170517
- Please check ESP-IDF ULP setup instructions and update the toolchain, or proceed at your own risk.
I faced similar problem, but I have installed the latest toolchain (make version), ESP-IDF (aa087667d) and ULP toolchain (2.28.51-esp-20190801).