Raspberry Pi 3B / 3B+/4B 1-Wire System Setting

  DS2482-100 & DS2482-800 1Wire Setting

use Dec 14 2020 version Image    5.4.83-v7l+ # 1379

1. Enable 1-Wire   

     1-wire Port pin 1 - pin4 

   (5V,GND, OW (1-Wire Data, ESD Protected).

    RT (1-Wire Return/Ground ,ESC protected)

   use Pi4B with our ds2482-800-17 Port board for testing  with 13x  ds18b20 1Wire temperature sensor

18  ds2482-100  1 port 1Wire 

1c  ds2482-800 8 port  1Wire   1f ds2482-800 8 port 1Wire

    use Dec 14 2020 version Image    5.4.83-v7l+ # 1379

    need use root to login load driver for ds2482

  echo ds2482 0x18 > /sys/bus/i2c/devices/i2c-1/new_device

  echo ds2482 0x1c > /sys/bus/i2c/devices/i2c-1/new_device

  echo ds2482 0x1f > /sys/bus/i2c/devices/i2c-1/new_device

once load the driver i2c address 18,1c,1f    change to be UU

type dmesg  you will see  1wire sensor 28.xxxxx  connect to system

check    /sys/bus/w1/devices       

you will see 13    28.xxxx   temperature sensor and  18 w1 bus master

( include 1 GPIO4 Pi system 1Wire)

check    /sys/bus/w1/drivers/w1_Master_driver       

you will see 18 w1 bus master ( include 1 GPIO4 Pi system 1Wire)

check    /sys/bus/w1/drivers/w1_slave_driver       

you will see 13  28.xxx   temperature sensor

 goto   /sys/bus/w1/devices       

 typing  ls -l  will display whole 1Wire system