Matrix user forums

Hi Secs,

Check out this page some info on the control protocol here:

https://www.pololu.com/product/2547

Thanks
Stuart

Hi Ted,

The sensors that I want to use need to be stainless and waterproof ie submersible these are freely available in the DS18B20 flavour where as your LM35DZ isn't, so I have no choice really.

Thanks
Stuart

Hi Jac,

Anyone can download the full Salae Logik software as you just buy the hardware:

https://www.saleae.com/downloads

My saved Salae file:
And Terminal:


Thanks
Stuart

Hi jac, What was the outcome of your software, did it tell you what you wanted to know ?, I went back to basics and created a chart that was just supposed to get the device count but my logic analyzer picks up nothing at all no signals. http://www.matrixtsl.com/mmforums/viewtopic.php?f=54&t=17350 Th...

Hi Jac,

Sorry I am only just getting back to you, I have been on my snowplow all day, anyway here is the logic grab with the Ds18b20 connected to D2:
Thanks
Stuart

EDIT:

Hi Jac, Yes course it is :shock: :? , I am not used to working with AVR, anyway I downloaded Xloader and programmed the Uno, this is what my analyzer said although not sure whether or not you wanted anything connected to the Uno ie Ds18b20, so this is with nothing connected except analyzer. uno_logi...

Hi Jac,

Can i program the hex file to uno in Flowcode or do I have to use mplab ?

Thanks
Stuart

Hi Roliw,

Welcome to the Flowcode Forum, can you post your chart so that somebody can help you with it.

Thanks
Stuart

Hi,

Because of my problems with this device I am starting from scratch, I have a simple chart that I have put together that should just display the amount of devices on the bus, when programmed I get 0 zero devices, is my chart correct ? any help appreciated.
Thanks
Stuart

Hi Charles,

Glad to see you have sorted it out.

Stuart

Hi Charles,

Can you post your chart please and somebody will be able to help you better.

Thanks
Stuart

Hi Jac,

I have now connected my analyzer to the data line of the ds18b20, in the chart I disabled everything apart from a 5 second delay and the "get device count" macro, when I reset the uno and trigger the analyzer there is nothing there at all, is this correct ?

Thanks
Stuart

Hi Jac,

If I capture not exactly at startup I get this info:
Thanks
Stuart


Edit: Have you noticed that the warnings disappear when been running for a while !

Hi Jac,

These are the results from the analyzer:
Thanks
Stuart

Hi Jac,

Right I have just put together the new Uno and a small DS18b20, these are the results:
Exactly the same, I will plug the analyzer in and see what this says

Thanks
Stuart

Hi Jac,

My sensors are the waterproof type with long lead, I have tested on Arduino IDE and they work fine, I do have some TO92 type which I can try with later.

Thanks
Stuart

Hi Jac,

just a quick one , when I use a one-wire anylyser in Logic this is what comes up for the starting period:
Thanks
Stuart

EDIT: I tried this a few times and the invalid rom command kept appearing

Hi Jac,

That's fine, thanks for the help.

Stuart

Hi Jac,

I captured this on a rising edge straight after a reset, just need to find out what the time frames should be now:
Thanks
Stuart

Hi Jac,

I have just removed the vcc on the Ds18b20 and put it to ground, which I believe is parasitic powered, however the results are the same, I have run out of ideas now, I will have to get the logic analyser out and see what is being said and at what speed.

Thanks
Stuart

Hi Jac,

The only other thing I can think of then is DS18b20 mode, I have only ever used external power mode, are you using parasitic power mode ?, also I have a pocket DSO and a logic analyser.

Thanks
Stuart

Hi Jac,

I got a Genuine Arduino Uno today just in case the clones were at fault, I connected everything up, programed the board from Flowcode and these are the results:
exactly the same, no device or address, it has got to be something in Flowcode ?

Thanks
Stuart

Hi Jac,

Not to worry, I have a genuine Arduino Uno coming this week probably Wednesday so will test with that.

Thanks
Stuart

Hi, I have a few new Arduino Nanos so I soldered one up this afternoon, when I plugged it in, it loaded a USB SERIAL CH340 DRIVER, I selected 328p Nano in Flowcode and it programmed first time, so I think we are on the right track ie software driver, I updated my Arduino IDE to the latest build but ...

Hi Jac,

Is my driver the same version as yours ?

Thanks
Stuart