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Support > Frequently Asked Questions > What are the Linux device names for the UART ports on the display module?

What are the Linux device names for the UART ports on the display module?

UART is one of the on-board interface options available on display modules. Linux device names can be found in the tables below by model type: G2C1 and G2H2. Read more about I/O Options between modules.

G2C1 UART Names

Location uP Port Name Linux Device Name Description
J3 AUART1 /dev/ttySP1 Input main 5V power and RS232
J5 DUART /dev/AM0 Debug console port
J7 AUART4 /dev/ttySP4 RS485 port 2
J9 AUART2 /dev/ttySP2 I2C/3.3v UART
J11 AUART0 /dev/ttySP0 RS485 port 1

 

G2H2 UART Names

Location uP Port Name Linux Device Name Description
J1 UART1 /dev/ttymxc0 Debug console port
J2 UART2 /dev/ttymxc1 Input main 5V power and RS232
J21 UART5 /dev/ttymxc4 I2C/3.3v UART
J25
(if installed)
UART4 /dev/ttymxc3 RS485 port

 

A universal asynchronous receiver/transmitter, abbreviated UART, is a computer hardware device that translates data between parallel and serial forms.