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2.7. Overview of the Serial Ports
The following is a description of the functionality for the three serial ports contained in the LinPAC
AM335x series embedded controller, and are based on the RS-232 or RS-485 interfaces.
2.7.1. Introduction to Serial port for LP-22xx
The following illustrates the ports contained on the LP-22xx. The information is organized as
follows table:
Device name
Definition in LP-22xx SDK
-
/dev/ttyO1 or COM1
-
ttyO4
/dev/ttyO4 or COM4
ttyO2
/dev/ttyO2 or COM2
ttyO5
/dev/ttyO5 or COM5
AM335X-PAC Series User Manual
Copyright © 2021 ICP DAS Co., Ltd. All Rights Reserved.
Console port
Description
Internal communication with the
XV-board modules
RS-232 (RxD, TxD and GND);
Non-isolated
RS-232 (RxD, TxD and GND);
Non-isolated
RS-485 (Data+, Data-); Non-isolated
RS-485 (Data+, Data-); 2500 VDC isolated
version 2.0.4
Default
Baud rate
115200
115200
9600
9600
9600
Page: 43
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