Following these instructions you have access to the 3 hardware serials on an ESP32.
Serial0 is connected to the USB interface.
The default pins are
Serial0 - RX: GPIO3 , TX: GPIO1
Serial1 - RX: GPIO9 , TX: GPIO10
Serial2 - RX: GPIO16 , TX: GPIO17
On a TTGO Lora board the GPIO 9,10,16,17 are...
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