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ESP32-DEVKITV1
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- clone of DOIT's ESP32 DEVKIT V1?
- ESP-WROOM-32 (ESP32-D0WDQ6)
  = ESP32-D0WD-based modules with integrated flash
- DECISION20200822:
  = toolchain and build environment is simply not worth it!
  = WILL USE micropython instead!

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micropython
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- get some tools
  > pip install esptool rshell
- download binary from https://micropython.org/download/esp32/
  = selected esp32-idf3-20191220-v1.12.bin
  = idf4 seems to be missing LAN? stick with idf3 for now...
- erase flash
  > esptool.py --chip esp32 --port /dev/ttyUSB0 erase_flash
- flash micropython
  > esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 460800 write_flash -z 0x1000 <bin>
- use rshell to manage code (vfs)
  > rshell --port /dev/ttyUSB0 --buffer-size=32
- download file in rshell
  > cp <file> /pyboard[/<more_path>]

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board info
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esp32 doit devkit v1
vid = 0x10c4
pid = 0xea60
sn = 0001

esp32 doit devkit v1 (aliexpress - usb type c)
vid = 0x1a86
pid = 0x7523
sn = (null)