UART is one of the onboard 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.