Merge pull request #13 from ZIMO-Elektronik/esp32_docs #48

Job	Run time
x86_64-linux-gnu-gcc / x86_64-linux-gnu-gcc	1m 1s
arm-none-eabi-gcc / arm-none-eabi-gcc	1m 5s
esp-elf-gcc / esp-elf-gcc	3m 4s
	5m 10s

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