ESP32 connectivity elusive.

When connected to the ESP32-DEV1 via the ESP32's SERIAL1, the MOVI causes the ESP32 to crash.

Changes to the .h to use the hardware serial doesn't seem to be work.

I added this right after "#elif defined RASPBERRYBI"

#elif defined ESP_PLATFORM

This appears to cause the same response as ARDUINO_ARCH_SAM.
