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3.10
RS232 /RS422/RS485 Test
As you can see below, there are 5 UART supported by RSB-4221./dev/ttyO0is
reserved for RSB-4221debug port, the other UART ports could be applied by the
user.
Test RS232
This is loopback test, you need to connect a loopback connector for rs232 to the
testing port.
#AutoRun_uart232
=====test rs232!=====
rs232 number: 5
/dev/ttyO1 PASS!
/dev/ttyO2 PASS!
/dev/ttyO3 PASS!
/dev/ttyO4 PASS !
/dev/ttyO5PASS !
+--------------------+
| [RS232] Test Pass!|
+--------------------+
Note!
UART1 supports RS232/RS422/RS485, test rs232 mode, please jump
rs232 mode, you can refer to the detailed jump information from the
2.1.1 Jumper List
UART1 Test RS422
This is loopback test. So you need to connect a loopback connector for rs422to the
testing port.
#AutoRun_uart422 -p /dev/ttyO1 -t 1
Open uart /dev/ttyO1 PASS ....
->Writing : hello world!
->Reading : hello world!
->TX/RX Signal pass
+-----------------------------------+
| UART RS422 Testing PASS |
+-----------------------------------+
RSB-4221 User Manual
34
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