In arduino-esp32 v3.0.0-alpha3, we get a build error because the "GPIO" declaration was not found by the compiler.
The GPIO variable is declared in <soc/gpio_struct.h>, which is not in the include chain as before.
So, adding the missing include solves that issue.
The fix works with 2.0.14 of arduino-esp32 as well.
In arduino-esp32 v3.0.0-alpha3, we get a build error because the "GPIO" declaration was not found by the compiler. The GPIO variable is declared in <soc/gpio_struct.h>, which is not in the include chain as before. So, adding the missing include solves that issue.
The fix works with 2.0.14 of arduino-esp32 as well.
Fixes https://github.com/PaulStoffregen/OneWire/issues/132