Serial communication using MAX3100 USART chip.
The MAX3100Serial library has been developed to allow serial communication using the MAX3100 integrated circuit over the SPI bus. The interface replicates the familiar Serial and SoftwareSerial interface. Using multiple Chip Select pins it is possible to have multiple additional external serial ports with speeds between 300 bps and 230400 bps, depending upon the crystal chosen in the hardware design.
Maintainer: Ewan Parker
This library is compatible with all architectures so you should be able to use it on all the Arduino boards.
To use this library, open the Library Manager in the Arduino IDE and install it from there.