Need some debugging help. « Jee Labs Talk

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Need some debugging help.

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dustin
I just got a jeenode v4 and a jeelink v2. They're not communicating. I'm not entirely sure just yet who's at fault.

Here's an example of the two of them trying to talk:

JeeNode:
```
Current configuration:
 F i6 g212 @ 915 MHz
> 26s
 -> 0 b
> 26s
 -> 0 b
> 26s
 -> 0 b
> 26s
 -> 0 b
```
JeeLink (roughly the same time):
```
Current configuration:
 Z i26 g0 @ 315 MHz
> 6s
 -> 0 b
> 6s
> 6s
> 6s
> 6s
> 6s
> 6s
> 0t
> 0t
> 0t
```
As you can see, I tried a s command directly, and then did some t commands. The behavior is different between them, but most importantly, they don't communicate. I'd appreciate any debugging insight.
Posted 12/01/2010 04:33:44
kellerza

The group and frequency must be the same:

212g
9b (9/4/8 depending on frequency of RF12 module)

Try typing '?' in a terminal connected to a jeenode/link for help...

Posted 12/01/2010 09:24:53
dustin

sigh I was certain I had them in agreement at one point.

I'll have to try again when I get home, but the two problems that were bothering me were:

1. Never saw communication between them.
2. The JeeLink doesn't respond to the "s" commands the same way the other does.

Posted 12/01/2010 18:30:19

dustin

For sanity sake, here's a more recent session:

JeeLink:


 A i1 g212 @ 915 MHz
> 6s
 -> 0 b
> 6s
> 6s
> 0t
> 0t
> 0c

JeeNode (roughly same time):


 F i6 g212 @ 915 MHz
> 1s
 -> 0 b
> 1s
 -> 0 b
> 0t
 -> 66 b
> 0t
 -> 66 b
> 0t
 -> 66 b

Posted 13/01/2010 05:09:57

kellerza

You are right: the Jeelink should send "-> 0b", even for the second "6s" command.
Reset the Jeelink and use the JeeNode first... try the a (ack) command from the JeeNode.

Unfortunately I dont have a JeeLink,- but the RF12demo code are the same for both afaik.

Posted 13/01/2010 08:55:25
dustin

I've tried "1a" and "1s" from the JeeNode. They both return "-> 0 b" every time I try them, but I never see any activity from the JeeLink.

Poking at the JeeLink again shows the same behavior as before.

Posted 13/01/2010 09:12:15
jcw

That JeeLink looks bad. The fact that it doesn't report sending data after the first try is suspect. Note also that the JeeLabs units are for 868 MHz only - other frequencies may or may not work, at reduced range (are you in Europe?). Please contact me by email to resolve this.

Posted 13/01/2010 10:49:33

shizman

This is where I got confused. In the help that you get when you type '?', it'll say what to send and with what parameters. This is super unclear for a newbie such as myself.

For example, the help says:

<nn> i - set node ID (standard node ids are 1..26)

            (or enter an uppercase 'A'..'Z' to set id)

<n> b      - set MHz band (4 = 433, 8 = 868, 9 = 915)

<nnn> g    - set network group (RFM12 only allows 212)

<n> c      - set collect mode (advanced, normally 0)

t          - broadcast max-size test packet, with ack

...,<nn> a - send data packet to node <nn>, with ack

...,<nn> s - send data packet to node <nn>, no ack

<n> l      - turn activity LED on PB1 on or off
The <n> is unclear as to what it means.  Does it mean node?  What is it represented as <n> in one case, but <nnn> in another?
Also, "...,<nn> a" is super ambiguous.  What is the "..." supposed to be?
It also appears that you issue commands in reality differently than what is specified in the help.  For example, to turn on the activity LED, should I be typing (for node 1) "1 l" or "1l"?
I think the usage could use a round of examples at the bottom of it to help out people that are just starting out.  After my soldering session with my JeeNode, I wanted to test it with the JeeLink I have and really couldn't tell if they were communicating or not.  I can't find any kind of step by step tutorial that shows how to do this.

Posted 18/01/2010 15:07:43

shizman

Ok, it would seem that there is a step by step tutorial in the README.

Sorry about that. I'll run through this and see if my nodes work.

The usage could still benefit from clearer text and maybe examples. :)

Posted 18/01/2010 15:16:13
rubi

I also had troubles to understand what is going on, I really missed an example where sensor data (f.e. pressure sensor or sht11) is transmitted.

But finally I managed to find out myself.

I still do not understand how to transmit data with acknowledgement.
Hope I will find out soon too. :)

Another pitfall for me was the ready to send method.
I did not know that I only should use it when interrupts are enabled.
Imho it would be better to return 1 in doubt.

On the other hand it took only one day to set up a sensor network, who could ask for more. :)

Cheers
Michael

Posted 18/01/2010 15:37:16
jcw

Does this example help? http://wiki.jeelabs.net/pof/71

Posted 18/01/2010 16:56:18
rubi

Awesome!
I must have overseen this page, unfortunately.

I oriented my test software on your robot telemetry example.
Was also very helpfully, especially the idea to use a struct.

Your coding is very sophisticated, and elegant, but I would assume the typical Arduino user/coder would have troubles to understand what is going on.
I like it very much, I did not knew that it is possible to mix processing language with c/c++. I misunderstood the concept, I thought the libraries are c/c++ and the main file has to bee in Arduino language, which is much less powerful.

Cheers
Michael

Posted 18/01/2010 19:40:12
shizman

That example is perfect for a walkthrough. I'll go over it tonight.

Thanks!

Posted 18/01/2010 19:47:46
shizman

What would be the new link for this? http://wiki.jeelabs.net/pof/71 doesn't appear to go to the specific project anymore.

Posted 12/04/2010 15:32:43
marvings

Some of the POF-Stuff is now here:
http://cafe.jeelabs.net/pof/

Posted 12/04/2010 16:18:40