SUMP compatible logic analyzer code for Arduino.

Projects Interfacing w/ Software on the Computer
101

EDIT: If I use Logic Sniffer under Windows, the detection of my Arduino Mego Logic Analyser works.
Is there something wrong in the OSX version?

I want to use Gillham's fantastic logic analyser sketch on an Arduino Nano v3 clone (with an ATMega328p inside).
In OSX 0.9.7.2 version of Logic Sniffer:

  • I choose "Arduino Mega Logic Analyser"
  • I click on "Show device metadata", without success.
    => I always receive a "Detection failed" error.

I tried some configuration changes, to parameters like portdelay, portdtr, but nothing helps.
Is this sketch working with such Arduino?
If yes, should I do something special to make it working?

--
Pirlouwi

102

mpue:
Hi,

just this short info @gillham:

I tried everything you've mentioned, but still cannot get it to work.

Greetings
Matthias

Hi gillham,

Thanks for the great software, I've used it several times on an Uno to help with project debug, it works great. I have a project where I need the bigger buffer of the Mega 2560. I'm having same issues as Matthias under 1.0.6. The board checks out ok with test serial sketches. I've tried commenting out #define DEBUG and commented out the '?' debug println's, still no luck.

I've been meaning to eval moving to 1.6, so I'll give that a try and report back.

Thanks again,
George

103

Ok,

Removed Arduino 1.0.6, installed 1.6.3.

Compiled logic_analyzer on Uno, tested on ols-0.9.7.2, works great.

Compiled logic_analyzer on Mega 2560, compiles with:

Sketch uses 150,674 bytes (59%) of program storage space. Maximum is 253,952 bytes.
Global variables use 7,812 bytes (95%) of dynamic memory, leaving 380 bytes for local variables. Maximum is 8,192 bytes.
Low memory available, stability problems may occur.

Works from Arduino serial monitor now, response to "1" and "2" commands. Looking good.

Now tested under ols-0.9.7.2, and......works!

But...timing might be off. For same signal I get 9mS pulse width on an Uno, and 8.822ms on Mega. Will keep testing.

George

104

Did some more testing. Using an ATMega328P Uno, recording the same test PPM generator (a Turnigy 9x ATMega128A running Er9x software, measuring PXX module output) I got the following results:

logic_analyzer.ino compiled under 1.0.6:
pulse frame start to pulse frame start = 10.03 mSec - 1.03 mSec = 9.00 mSec

logic_analyzer.ino compiled under 1.6.3:
pulse frame start to pulse frame start = 9.8 mSec - 0.91 mSec = 8.89 mSec

So slightly different results for the two builds, same host board and same test article but different Arduino revision.

George

1.0.6_cap@100k.png
1.0.6_cap@100k.png1172×608 15.1 KB

1.6.3_cap@100k.png
1.6.3_cap@100k.png1212×608 15.3 KB

105

And here is a screen cap of the same hardware generated pulse stream, using a Saleae Logic to capture the pulse stream, confirms a fairly precise 9.0 mS spacing.

Thanks
George

Saleae_Logic.jpg
Saleae_Logic.jpg1046×433 164 KB

106

Hi

I want to capture a logic trace from a 433Mhz receiver.

I don't seem to be capturing all the trace just a very tiny part of it.

What settings to I need to change to capture the entire trace?

Also is there a way the Arduino can trigger the OLS software to start the capture as the buffer size is small. Running on a Duemilanove.

107

I am also using it for capturing a signal, but when I start capturing on Logic Sniffer, It displays capture from generic I/O started but nothing happens afterward. Please help me?
Also there are no options for trigger or device or anything in client (mac version 9.7.2). I only see 4 fileds

  1. set device path (I set this to /dev/cu.usbmodem1421 arduino usb path), I get to set
  2. Sampling rate (I set this to 500K)
  3. sample depth (this is set to default 256)
  4. sample width (this is set to default 1)

Also I tried it on windows PC options are same but client show capture failed Data readout interrupted EOF
Please help me