I am running Redhawk 1.10.1 on CentOS 6.7 with a N210, when I first allocate and attach a waveform the USRP_UHD device runs properly, but when I release it and then try to allocate a second(or higher) time the device always shows an sri.xdelta = 1. This issue crashes my other components. Is this a bug in the device or is there something set up wrong on my pc?
If you've installed from the REDHAWK RPMs, get a copy of the source code for the USRP_UHD Device:
git clone https://github.com/redhawksdr/USRP_UHD.git
Now edit line 598 (which should be "fts.stream_id = 0.0;"), so that the stream_id is set to an empty string ("") instead of 0.0. Then you should be able to rebuild and install this edited version and the issue will be resolved.
The reason this causes a probelm is actually quite interesting. Although the compiler won't allow setting a string to 0, setting it to 0.0 appears to clear the std::string's internal buffer, but leave the previous length of the string intact. After a deallocation, the USRP_UHD Device clears the SRI information. When a new allocation is performed, the Device checks if the stream_id is blank, which would indicate it needs to update the SRI. Because the empty() call on a string checks the length of the string, the Device assumes the stream_id is not empty and a default SRI is pushed.
Related
When monitoring memory using the :C XXXX option, the memory values do not show when debugging. You can monitor up to 4000 characters by using the :C option when monitoring memory:
I have ran into this problem twice now. I am using IBM Rational Developer for i Version: 9.6.0.0, with the Java JDK/JRE v8u45.
Here are the values when debugging, and my data structure definition:
dcl-ds dsSQL qualified inz;
fullStmt varchar( 9360 ) inz;
end-ds;
Once I click on the element, all I see is ``. There is nothing in the value but that, but you can clearly see that dsSQL.fullStmt is not empty. I use this option daily and 99.99% of the time it works fine. I have to restart a million times, reset RDi to start with -c and recompile the program over and over to get it to work right.
Anyone have any idea how to fix this? I would give you the 'Error Log' but it is constantly filled and nothing in there seems to point to that issue. When adding or looking at that variable during debug, no errors are thrown.
You probably want to update to the latest 9.6.0.6 release. They have fixed at least a few memory problems with the debugger between your release and the latest.
https://www-01.ibm.com/support/docview.wss?uid=swg27038481
I am using the following library to connect via USB to an external device:
https://github.com/node-serialport/node-serialport
I set up the following sample project to narrow down where the issue might be:
https://github.com/nyoung697/node-serial-test
This code works on my Mac. The device I am connecting to accepts an ascii command and the carriage return to terminate that command.
In the example project, I am passing in 'V\r' and am expecting the version of the device to be returned. When I run this code on my Mac, I get the expected response.
However, when I run it on my Windows 10 machine, I do not get any response at all. Neither the port.on('data') or port.on('error') events are hit.
I tested downgrading the serialport library to version 4.0.7 and it does work.
Does anyone have any ideas what might have changed between 4 => 6?
P.S. I edited this question, as I originally thought it had something to do with Electron, however after doing this simple test with only node.js, I believe I have narrowed it down to this version of the library on Windows.
Okay... I just figured this out.
All I needed to do was add the property 'rtscts' to the openOptions object I pass in to the constructor and set it to true.
const SERIAL_PORT_SETTINGS = {
baudRate: 115200,
rtscts: true
};
let port = new SerialPort(devicePath, SERIAL_PORT_SETTINGS);
I figured this out by digging around in the release notes. I noticed that from v5.x.x to 6.0.0 the breaking changes included making this value default to false.
windows: We previously hard coded to have RTS on for windows at all times it now default to off.
Attempting to play a signal through computer speakers via python so I tried the example in 7.1 of the manual. I see the signal on the plot but hear nothing over the speakers. Is SoundSink the wrong approach for this? I'm running REDHAWK 2.0.6 on CentOS 7. In case this is important, the first time sb.start() is called, "shared memfd open() failed: Invalid argument" is displayed. When called a second time that message doesn't appear. I am able to play audio from within the REDHAWK IDE.
from ossie.utils import sb
import frontend
sim = sb.launch("rh.FmRdsSimulator")
demod=sb.launch("rh.AmFmPmBasebandDemod")
filter=sb.launch("rh.fastfilter")
resample=sb.launch("rh.ArbitraryRateResampler")
agc=sb.launch("rh.agc")
sink=sb.SoundSink()
plot=sb.Plot()
sim.connect(demod)
demod.connect(filter, usesPortName="fm_dataFloat_out")
filter.connect(resample)
resample.connect(agc)
agc.connect(sink)
agc.connect(plot)
sim.addAWGN=False
demod.freqDeviation=15000.0
filter.filterProps.freq1=16000.0
filter.filterProps.Ripple=0.5
filter.filterProps.Type="lowpass"
resample.outputRate=32000.0
sb.start()
alloc = frontend.createTunerAllocation(
"RX_DIGITIZER",
allocation_id="testing",
center_frequency=100.1e6,
sample_rate=256e3,
sample_rate_tolerance=20.0)
sim.allocateCapacity(alloc)
The package that SoundSink uses to generate sound has been deprecated in CentOS 7 (but is still available in CentOS 6). This issue has been added to the backlog and will be fixed in a future release.
I have a wireshark dissector plugin.
I also have a wireshark installed from apt-get.
The wireshark loads fine without the plugin inserted in the right place.
When I include the plugin .so file and try to run wireshark, I get the following error:
$ wireshark
08:23:45 Err register_subtree_array: subtree item type (ett_...) not -1 ! This is a development error: Either the subtree item type has already been assigned or was not initialized to -1.
Trace/breakpoint trap (core dumped)
I tried understanding the problem. It says the subtree was already assigned (I'm assuming assigned an ett value) or was not initialized with -1. there are 3 files in my plugin where the API is called and I checked the values of ett[] being supplied to the API in each of these places. They are all initialized to -1.
Stuck in a roadblock. Any suggestion would be helpful.
Also, I do not understand where wireshark dumps the core. I could not find any core.
Any idea about this?
Generally, if you want to insert a plugin into a program, you have to ensure that the library API that the plugin was compiled against is the same as that provided by the program.
Unless wireshark provides documented versioning in its library API, this means that you have to have the plugin compiled against the same version of wireshark that you intend to use it with. So, if you compile your wireshark or the plugin yourself, you should compile the other as well. If you get your plugin in binary form, you should get your wireshark also from exactly the same place, otherwise you may not know if the two are compatible or not. If you only get a core dump when you insert the plugin, that's a strong indication that the two may not be compatible.
register_subtree_array: subtree item type (ett_...) not -1
...
there are 3 files in my plugin where the API is called and I checked the values of ett[] being supplied to the API in each of these places. They are all initialized to -1.
To which API are you referring? You must not call register_subtree_array() on any particular ett_ array more than once; if you're calling it twice, the first call will cause the ett_ values in the array to be set to values different from -1, so the next call will fail with that error.
I've been struggling to get my application deployed properly for several weeks now (it's a hobby), and I just don't know what else to try.
I started a new project in Qt Creator (2.6.1), by selecting Applications -> Qt Quick 2 Application (Built-in Elements). I tweaked the QML to make the background blue and text red:
main.qml
import QtQuick 2.0
Rectangle {
width: 360
height: 360
color: "blue" // Added!
Text {
text: qsTr("Hello World")
anchors.centerIn: parent
color: "red" // Added!
}
MouseArea {
anchors.fill: parent
onClicked: {
Qt.quit();
}
}
}
I'm using Qt 5.0.1 and the x86 MSVC 2010 compiler. I built the Release version and it ran fine in QtCreator. If you need more compiler specifics, I'll post them.
To deploy, I created a new folder on my desktop called HelloWorld/ and copied everything from H:\Qt\Qt5.0.1\5.0.1\msvc2010\bin\* and H:\Qt\Qt5.0.1\5.0.1\msvc2010\plugins\* and 'H:\Qt\Qt5.0.1\5.0.1\msvc2010\qml* into it, along with the Release HelloWorld.exe executable.
Overkill? Yes. But I'm desperate.
When I run HelloWorld/HelloWorld.exe in Windows 7 64-bit, the application runs fine. But when I copy this HelloWorld/ folder over into a virtual machine running Windows XP 32-bit, it shows a properly-sized window, but with nothing in it (white, with no text). When clicking in the center of the window, the window closes as it should.
So I loaded the executable in Dependency Walker, but nothing looked out of the ordinary (IESHIMS.DLL and WER.DLL were of course missing). I ran Start Profile, and got a slew of red errors:
GetProcAddress(0x7C800000 [KERNEL32.DLL], "FlsAlloc") called from "MSVCR100.DLL" at address 0x78ABBA3B and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C800000 [KERNEL32.DLL], "FlsGetValue") called from "MSVCR100.DLL" at address 0x78ABBA48 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C800000 [KERNEL32.DLL], "FlsSetValue") called from "MSVCR100.DLL" at address 0x78ABBA55 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C800000 [KERNEL32.DLL], "FlsFree") called from "MSVCR100.DLL" at address 0x78ABBA62 and returned NULL. Error: The specified procedure could not be found (127).
LoadLibraryExW("C:\documents and settings\owner\desktop\helloworld\platforms\qminimald.pdb", 0x00000000, DONT_RESOLVE_DLL_REFERENCES) returned NULL. Error: %1 is not a valid Win32 application (193).
LoadLibraryExW("C:\documents and settings\owner\desktop\helloworld\platforms\qwindowsd.pdb", 0x00000000, DONT_RESOLVE_DLL_REFERENCES) returned NULL. Error: %1 is not a valid Win32 application (193).
GetProcAddress(0x7E410000 [USER32.DLL], "UpdateLayeredWindowIndirect") called from "QWINDOWS.DLL" at address 0x013A8749 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C9C0000 [SHELL32.DLL], "SHCreateItemFromParsingName") called from "QWINDOWS.DLL" at address 0x013A8997 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C9C0000 [SHELL32.DLL], "SHGetStockIconInfo") called from "QWINDOWS.DLL" at address 0x013A89C9 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x7C800000 [KERNEL32.DLL], "GetTickCount64") called from "QT5CORE.DLL" at address 0x670726A7 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x755C0000 [MSCTFIME.IME], "ImeGetImeMenuItems") called from "IMM32.DLL" at address 0x76397354 and returned NULL. Error: The specified procedure could not be found (127).
GetProcAddress(0x4FDD0000 [D3D9.DLL], "Direct3DCreate9Ex") called from "LIBEGL.DLL" at address 0x01487198 and returned NULL. Error: The specified procedure could not be found (127).
I also tried to run a debug version, but I only have the 64-bit versions of the MSVC100 dll's, so I can't copy them to the XP machine (I can only run the 32-bit redistributable). I don't know what other tools I can use to try to solve my problem.
I know I must be doing something stupid, but I really can't find anything on the internet to help. It's really frustrating to spend so much time developing a Qt application, and then get stuck trying to deploy it.
I should note that the program runs just fine in a Windows 7 32-bit virtual machine (after MSVC2012 redistributable has been installed).
The application I'm really interested in running, runs really strangely in Windows XP. When I first run it, the window sizes properly and a couple text strings show up. But none of the Rectangle{} elements are displayed. I left the app running for a few minutes as I made myself some coffee, and when I returned to my computer, the window was blinking random shapes and text, to the beat of the text cursor! What the heck is that?! It looked like a basic math function was screwed up, so parts of the interface were being displayed at improper sizes and positions. I even saw the real interface show up for one blink of the mouse cursor (and yes, the random shapes appear and disappear to the beat of the mouse cursor).
On a whim, I tried using the application (clicking where I know a text box exists), to populate one of the lists, and it worked! The application is running completely fine, except for the graphics. I know Qt 5.0 reworked some of the OpenGL handling, right? Could this be a bug, or maybe a library I haven't installed?
I also encountered the same problem when deploying quick 2.0 application on Windows XP builded by Qt 5.1 rc1 with ANGLE; It's seems to be ANGLE problem, on http://qt-project.org/wiki/Qt-5-on-Windows-ANGLE-and-OpenGL is recommended to use OPENGL for XP, also Qt 5.1 with OPENGL works for me on Windows XP
Install Microsoft Visual C++ 2010 Redistributable Package (x86)
on client machine (windows xp).
Use release build, not debug build, You seems to be using Debug
version.
Don't use OpenGL(Most of XP Users may note have updated OpenGL
version, otherwise you may have to force them to upgrade it.)
Update
Use OpenGL for Windows XP. User have to install or upgrade their OpenGL drivers. Read this.
Try using the MinGW version instead of the VC++ one. It's likely that there are layers and layers of .Net stuff preventing you from running on XP. XP came out before 90% of the current .Net stuff existed which is why it wont work as it's not installed.
Just a guess but its worth a shot.