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
Product link
DS2482-800-17Port
DS2482-800-9Port

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
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