Raspberry pi4 multiple usb to serial port setting

// 1. 연결된 ttyUSB Path 확인  usb 1-1.2 // usb 1-1.4 

pi@Teon:~ $ dmesg | grep ttyUSB

 

// 2. usb-serial rules 수정

pi@Teon:~ $ sudo nano /etc/udev/rules.d/10-usb-serial.rules

SUBSYSTEM=="tty", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", ATTRS{devpath}=="1.2", SYMLINK+="ttyUSBa"

SUBSYSTEM=="tty", ATTRS{idProduct}=="6001", ATTRS{idVendor}=="0403", ATTRS{devpath}=="1.4", SYMLINK+="ttyUSBb"

 

// 3. 저장내용 반영

pi@Teon:~ $ sudo udevadm trigger

 

// 4. ttyUSBa -> ttyUSB0 , ttyUSBb -> ttyUSB1 매핑 확인

ls -l /dev/ttyUSB*

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