EVO ORIN RS232 Usage#

RS232 Usage#

RS232 Pin Assignment#

DB9 Port Pin Definition:

Pin

Signal

2

RX

3

TX

5

GND

Function and Device Node#

Function

Device Node

UART_(232)

/dev/ttyUART_232_1

UART_(232)

/dev/ttyUART_232_2

Usage#

  • Use connector 1, connect to DB9 RS232 of device.

  • Use connector 2, connect to PC.

Preparation#

PC(Ubuntu System)

#Install
sudo apt-get install putty -y

Device

#install
sudo apt-get install putty -y

Receive-Send Test#

Device

#Open putty
sudo putty

After opening Putty, configure the parameters in “Session”. Enter the device node in “Serial line” and set the speed to 115200 in “Speed”. Choose “Serial” in “Connection type”.

Configure the parameters in “Terminal”, select “Force on” in “Line discipline options”, and then click “Open” to enter the data transfer interface.

PC

Obtaining the UART device node on the PC side.

#After connecting the USB to serial module to the PC side, execute the command, and the output result is the UART device node.
 ls /dev | grep -E 'ttyUSB[0-9]+' | sort -V | tail -n 1

#Open putty
sudo putty

After opening Putty, configure the parameters in “Session”. Enter the device node in “Serial line” and set the speed to 115200 in “Speed”. Choose “Serial” in “Connection type”.

Configure the parameters in “Terminal”, select “Force on” in “Line discipline options”, and then click “Open” to enter the data transfer interface.

Use PuTTY to determine whether the send and receive operations are successful.

Observe the transmission interfaces on both the device side and the PC side. Enter any information in either interface, and if both interfaces display the same content, it means that the send and receive operations are successful.

PC

Device