orca/ext/wasm3/platforms/embedded/esp32-idf/README.md

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## Build for ESP-IDF
Download and install ESP-IDF v4.3-beta1
```sh
export IDF_PATH=/opt/esp32/esp-idf
# Set tools path if needed:
#export IDF_TOOLS_PATH=/opt/esp32
source $IDF_PATH/export.sh
idf.py menuconfig
# Select target:
idf.py set-target esp32
#idf.py set-target esp32s2
#idf.py --preview set-target esp32c3
idf.py build
idf.py -p /dev/ttyUSB0 flash monitor
```