[Pi] SERIAL PORT 고정설정

출처 : https://km0830.tistory.com/13

SERIAL PORT 고정설정

pi@raspberrypi:~ $ dmesg | grep ttyUSB [4.074363] usb 1-1.2: FTDI USB Serial Device converter now attached to ttyUSB0 [4.075590] usb 1-1.3: FTDI USB Serial Device converter now attached to ttyUSB1

 

시리얼 정보를 받아본다

pi@raspberrypi:~ $ udevadm info --name=/dev/ttyUSB0 --attribute-walk ... pi@raspberrypi:~ $ udevadm info --name=/dev/ttyUSB1 --attribute-walk

각각의 시리얼에 상세정보를 받아본 후

ATTRS{serial}=="A1LPXWF"

ATTRS{idProduct}=="6001"

ATTRS{idVendor}=="0403"

 

세가지 정보를 필요로합니다

pi@raspberrypi:~ $ sudo nano /etc/udev/rules.d/10-usb-serial.rulesSUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="P11234567", SYMLINK+="ttyUSB_P1" SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", ATTRS{serial}=="RFX1234567", SYMLINK+="ttyUSB_RFX"pi@raspberrypi:~ $ sudo udevadm triggerpi@raspberrypi:~ $ ls -l /dev/ttyUSB* crw-rw---- 1 root dialout 188, 0 Nov 11 10:29 /dev/ttyUSB0 crw-rw---- 1 root dialout 188, 1 Nov 11 10:00 /dev/ttyUSB1 lrwxrwxrwx 1 root root 7 Nov 11 10:00 /dev/ttyUSB_P1 -> ttyUSB1 lrwxrwxrwx 1 root root 7 Nov 11 10:00 /dev/ttyUSB_RFX1 -> ttyUSB0