I am in need to configure two UART connections from Olimex ESP32-EVB to a scanner and to a card reader.
I was exploring the GPIO pins that could have helped to establish those connections, but unfortunately from what I could understand I can only use the pins
GPIO36 which are regarded as being
UART1: TXD and
I also saw that there would seem to be a possibility for using the pins
GPIO03 which are documented as
UART0: TXD and
UART0: RXD, but these pins are marked as cannot be used.
This is troublesome for me because I cannot put the dots together on why they provide UART communication if they cannot be used?
I am attaching also the photo from which I got all this info, everything that makes me wonder is highlighted in purple ellipses.