One wire protocol and DS18b20 temp sensor

#1

HI,
Are there any plans to implement the Dallas one wire library in uLisp and specifically access to the DS18b20 temperature sensor.

Any help is much appreciated.

Cheers.

#2

What uLisp platform are you interested in using?

#3

Hi, and thanks for the reply. I was looking initially at the ESP8266 platform. Cheers.

#4

Would it be acceptable to support connecting to a single 1-Wire device only?

#5

HI,
And thanks for the reply.

The application currently uses 10 temp sensors (accessed via the unique 64 bit code) and is also set-up as a web-server. When i was coding it using arduino for the esp8266 i came across uLisp, i vaguely remembered LISP from a very, very, very,… long time ago (loved it although at the time didnt use it much) and it seemed to have a lot of advantages particularly for creating a web-server so then i thought, why not program the whole project in uLisp…

Anyway to cut a long story short, it really does need to have multi sensor access via the unique 64 bit code that each sensor has. Currently i get a specific temp by calling the relevant sensor address.

I think the whole idea of having Lisp on a micro-controller is brilliant.

Cheers.

#6

The best OneWire Arduino library seems to be the one maintained by Paul Stoffregen:

https://www.pjrc.com/teensy/td_libs_OneWire.html

It should be fairly easy to add uLisp functions to interface to this; see Adding your own functions.

An alternative is to use a I2C to 1-Wire interface chip; see:

although I haven’t successfully used either of these.