2 X 1Wire individual pin on one mikokontroler

[rradojko]

Hello to everybody.

I'm new to the forum.
I have one question. It is possible to the microcontroller ATmega32 create 2 X 1Wire the pin PB0 and PB1?
How to define two input 1Wire?
To better understand the attach picture.

Thank you very much for the answer.

Radojko

[Enamul]

You can use two one wire device in the same port pin by using one pull-up resistor but the data line will be tied together and connected to that one pin of PIC..In code we can identify two chip as they have different address.

[rradojko]

Sorry for bad english
I understand that it can be 1wire pin connected more DS18S20.
But it's complicated for me. I would like to skip addressing
I would like to connect DS18S20 on each individual pin.
This connection is much more understand for me.

Any other a suggestion?

rr

[Enamul]

But that will complicate code much more...

[Flaterick]

Hello

Flowcode can skip any real sensor address (ROM code), but only the addressing and read out the temperatures individually.

Find it very sad that is advertised with a 1Wire support, and then it is not possible to read the serial number, and so the sensors should be done directly speaking.

Mfg.
Matthias

sory for bad english

[rradojko]

If I DS18S20 the individual pin then you can skip address and reading code.
But flowcode but allows only one 1wire one pin.
Use the C code in the project, do not know how.

Any suggestions…

rr

[Benj]

Hello,

Can you add a second one wire component and connect this to your second pin?

[rradojko]

Thanks for answer.

The problem is Flowcode4 It allows only one component 1wire.

rr

[Benj]

Hello,

Ok please make a backup of your current component C file and then try replacing the current file with the one here.

PIC_One_Wire.c

(22.59 KiB) Downloaded 357 times

The file should be located here, "C:\Program Files (x86)\Matrix Multimedia\Flowcode V4\Components"

There may be compilation errors with two versions of the component as it wasn't designed for this in v4, worth a shot though and should be easy enough to sort out.

Let me know how you get on.

[rradojko]

Hello.

I used the attached file PIC_One_Wire.c. When translated into HEX code return error.

Attach PIC_One_Wire.c C code from Flowcode4. Code works, but I can use only 1 x 1Wire pin.

Beny, or you can check the attached code? Your attached code is not working correct.

Benj, can you please stick also “C” code for AVR one wire.

How you can help.
RR

[rradojko]

Hello.

Again, please help.
I tried 2x onewire in Flowcode5 2x single pin. I use ATMEGA32 microprocessor.
Use sensors DS18S20. Are connected to pinD2 and pinD3.
One sensor is working properly connected to pinD2.
A sensor on the pinD3 shows the same temperature as the sensor pinD3.

How to properly write a program, i measured two temperature?

I attach my program to AVR atmega32.

What am I doing wrong? Please Help.

Thanks and best regards.

[Sean Danaher]

I'm sure this can be done but I'm not sure why. I have successfully connected twelve daisy-chained DS18B20 to the same 1-wire line using an Arduino

Look at this link for information etc Link removed at site owners request

[rradojko]

Hello,

Sean Danaher, very nice and interesting project.
In which language you programmed? Flowcode?
Unfortunately, I do not know how to program.

Greetings!

RR