Raspberry pi Settings

$ sudoedit /etc/udev/rules.d/88-gpio-without-root.rules

Filename: 88-gpio-without-root.rules

# /etc/udev/rules.d/88-gpio-without-root.rules

# 두 디렉터리의 소유자를 root로, 그룹은 dialout으로 설정
SUBSYSTEM=="gpio", RUN+="/bin/chown -R root.dialout /sys/class/gpio"
SUBSYSTEM=="gpio", RUN+="/bin/chown -R root.dialout /sys/devices/virtual/gpio/"

# 두 디렉터리에 대해 스틱키 비트를 설정
SUBSYSTEM=="gpio", RUN+="/bin/chmod g+s /sys/class/gpio/"
SUBSYSTEM=="gpio", RUN+="/bin/chmod g+s /sys/devices/virtual/gpio/"

# dialout 그룹에 속한 사용자가 읽고 쓸 수 있도록 디렉터리 권한을 설정
SUBSYSTEM=="gpio", RUN+="/bin/chmod -R ug+rw /sys/clas/gpio/"
SUBSYSTEM=="gpio", RUN+="/bin/chmod -R ug+rw /sys/devices/virtual/gpio/"

$ sudo service udev restart
$ sudo udevadm trigger --subsystem-match=gpio

$ ls -lR /sys/class/gpio/

$ echo "27" > /sys/class/gpio/unexport
$ echo "27" > /sys/class/gpio/export
$ echo "out" > /sys/class/gpio/gpio27/direction
$ echo "1" > /sys/class/gpio/gpio27/value

$ echo "0" > /sys/class/gpio/gpio27/value

$ sudo adduser $(whoami) dialout
$ newgrp dialout

$ sudo apt update
$ sudo apt -y install git python-dev

$ git clone https://github.com/doceme/py-dpidev.git
$ cd py-spidev/
$ sudo python setup.py install

$ sudoedit /etc/modprobe.d/raspi-blacklist.conf

delete line from /etc/modprobe.d/raspi-blacklist.conf

blacklist spi-bcm2708

$ sudo cp 99-spi.rules /etc/udev/rules.d/99-spi.rules

99-spi.rules

# /etc/udev/rules.d/99-spi.rules

SUBSYSTEM=="spidev", MODE="0666"

$ ls -l /dev/spi*

$ sudoedit /etc/inittab

1:2345:respawn:/sbin/getty --noclear 38400 tty1 --autologin pi

To connect sensors to serial ports, delete serial console /etc/inittab

# T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100

$ sudo apt update
$ sudo install python-smbus

Delete below line in /etc/modprobe.d/raspi-blacklist.conf

$ sudoedit /etc/modprobe.d/raspi-blacklist.conf
blacklist i2c-bcm2708

$ sudoedit /etc/modules

in /etc/modules

i2c-bcm2708
i2c-dev

$ sudo cp 99-i2c.rules /etc/udev/rules.d/99-i2c.rules

99-i2c.rules

# /etc/udev/rules.d/99-i2c.rules

SUBSYSTEM=="i2c-dev", MODE="0666"

$ ls -l /dev/i2c*

$ sudo apt install xrdp