Products > Test Equipment
SainSmart DDS120 & DDS140 USB Oscilloscope
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merbanan:

--- Quote from: doctormord on April 02, 2016, 12:44:32 pm ---
a working blob would be nice, as i actually wont setup the build environment.


--- End quote ---

Here it is. This firmware might be compatible with the Hantek 6022BE software.
doctormord:
Thanks,

i spend the last couple of hours to fix the "OpenHantek-Mod" aka "Ledioskope" from this thread. Codebase is from "mmark".

The bufferproblem is somehow fixed (glitch after 1k of data), timebase is working up to 200ms/DIV, "correct" buffersize is selected by timebase-value. Trigger is still not working but with the trigger-sliders, you can adjust possible glitch-position aka bufferposition.

 :-/O
EDIT: Obsolete
Download: https://dl.dropboxusercontent.com/u/5641160/DDS120_OpenHantek_GlitchFix.zip

See: https://www.eevblog.com/forum/testgear/sainsmart-dds120-usb-oscilloscope-(buudai-bm102)/msg911658/#msg911658
for actual code.
mmark:
Great progress!

@DrMord: could you share your src code changes? I have some time during the next two weeks and could try to get the triggering working.

Thanks,

M.
doctormord:
Sure,

i actually try so get the trigger working. It actually does for buffersizes <= 2048 for both channels on rising edge at sine/triangle but still at bad hack. I know that the original DDS120 firmware have a "pretrigger-rolling" implemented, but i do not have the control code.

Will share the code then.
mmark:
Follow-up:

I had to install http://download.qt.io/archive/qt/5.3/5.3.2/qt-opensource-windows-x86-mingw482_opengl-5.3.2.exe AND set the following environment variable  QT_QPA_PLATFORM_PLUGIN_PATH to c:\Qt\Qt5.3.2\5.3\mingw482_32\plugins\platforms\ to get DrMord's latest binary to run in my Windows XP VM...

The buffersize is now set correctly automatically, nice! But the 1k buffer glitch / restart / discontinuity still seems to be there, see attached screen shot. I believe that we need an updated firmware on the DDS120/140 to fix this issue correctly, so I'll try to get merbanan's firmware running with openhantek or pulseview.

M.
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