UART(ROM-5880)
From ESS-WIKI
User Debian/Linux UART/serial port access is through the tty-devices. The ttydevices have different names depending on UART drivers for different boards.The default value is RS232.
Device Node | COM Port Name |
/dev/ttyS3 | COM1(RS232 4-wire) |
/dev/ttyS4 | COM3(RS232 4-wire) |
/dev/ttyS5 | COM2(RS232 2-wire) |
/dev/ttyS7 | COM4(RS232 2-wire) |
HW Setting for SOM-DB2510
SW1/2:1->ON ,2->OFF
J21:2-3
RS-232 Test:
1. 4-wire (Take COM1 for example).
# /tools/test/adv/uart/rs232_4_wire_test.sh /dev/ttyS3
2. 2-wire (Take COM2 for example).
# /tools/test/adv/uart/rs232_2_wire_test.sh /dev/ttyS5