How to use 2 simultanous pins for ds18b20 sensors


I am trying to interface 17 sensors with my bbb, 10 works great for any pin… more 10 sensors are not supported so far as per my poor understanding using single pin.

I there any possible way to use more than one pin for Dallas 1wire. if yes, what mods I would need to do to dts file.

I have played with my dts file in many possible ways to no success. It just doesn’t take second pin.



Here is what i got but still second pin/bus_master isn’t working

root@beaglebone:/# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF—
1: 55:PF—
2: 56:PF—
3: 57:PF—
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
7: ff:P-O-L Override Board Name,00A1,Override Manuf,w1
8: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-W1

Could somebody explain it

Hi Azar,

Did you ever get this working, am trying to do the same but with no success.