One wire and new rpi2

spudgunman

So I am running this kernel
Linux pi-security 3.18.14-v7+ #792

my existing 1wire sensors work perfect with adding the new requirement to the config

#onewire config
dtoverlay=w1-gpio,gpiopin=4

however I cant seem to adapt my existing hardware to this board? I see this http://unipi.technology/wiki/1Wire_topology

I am using VCC to Data to power my chips but this isnt working either...

can you please provide step by step to get this working?

spudgunman

So I am running this kernel
Linux pi-security 3.18.14-v7+ #792

my existing 1wire sensors work perfect with adding the new requirement to the config

#onewire config
dtoverlay=w1-gpio,gpiopin=4

however I cant seem to adapt my existing hardware to this board? I see this http://unipi.technology/wiki/1Wire_topology

I am using VCC to Data to power my chips but this isnt working either...

can you please provide step by step to get this working?

Hello,

UniPi does not uses the GPIO 4 for 1Wire master. Instead there is a special IC for that (see the documentation).

So the i suggest you to use our official api, to make sure it works and then you could start with the owfs.

Br,
Tomas

spudgunman

I don't feel your documentation clearly explains as well as your code is not well documented so I couldn't figure it out - could you expand on what exactly needs to be done to interface the kernel one wire support with the onboard ic or are you saying I must use owfs?

spudgunman

documentation for 1-wire is here http://unipi.technology/wiki/1Wire_topology

but you dont document anything other then some oddity that you have with your datawire, there is no documentation on how the chip is powered with your device and no documentation on the I2C interface or register that it may use.. as well as no documentation on OWFS configuration or that it even uses that.

document https://github.com/UniPiTechnology/evok ... README.TXT and https://github.com/UniPiTechnology/evok ... ll-evok.sh
states nothing about owfs

this project is nice hardware but the software and documentation need a lot of work, if you can please advise step by step or help me help you make your documentation better

spudgunman

I would still like to see the wiki updated with technical spicifics on how you power the devices, the I2C address that is the w1 chip as well as I have some unknown thermal sensors reading at high temp that are "ghost?" new? unknown…

http://wiki.m.nu/index.php/OWFS_with_i2 ... sh_version

I was able to make it run with the apt-get package owfs and not bother compiling - things worked great with my applications.

The documentation that says everything needed to run the owfs is here http://unipi.technology/wp-content/uplo ... ual_en.pdf (it is not much but still enough)

We do not say anything about owfs is because our official api is evok. So if you want to run third party software, you have to do it on your own and maybe provide your results to the others via this forum.

So if you decided to go with owfs there are many tutorials online, e.g. http://raspberrypi.tomasgreno.cz/therma ... r-i2c.html