Do not succeed in reading and writting frames with peak system

Jules31

I've done these tests with the following source code:

    while(1)
    {
    qDebug()<<device->writeFrame(frame);
    qDebug()<<device->errorString();
    Sleep(500);
    }

writFrame() returns "true".
error() returns "QCanBusDevice::NoError".

aha_1980

Hi @Jules31,

please try the CAN example first. You can also start it from Qt Creator.

Note that for 64 bit Qt you will need a 64 bit pcanbasic.dll.

As said before, don't use sleep in event driven programs. It will block the event loop and that blocks the correct program execution.

Regards

Jules31

Hi,

The example does not compile.

I now use a signal but it still does not word:

connect(device, &QCanBusDevice::framesReceived, this, &can::onFramesReceived);

void can::onFramesReceived() {
    qDebug() << "[Frame received] !";
}

jsulm

@Jules31 Are you sure the other side is responding?

aha_1980

Hi @Jules31,

The example does not compile.

Please post the exact compiler error. The example should compile and run just fine.

Also, in your first post you wrote:

Then, I imported PCANBasic.lib from the PCAN_Basic_API into my Qt Project

That is not needed. The pcanbasic.dll is loaded dynamically at runtime.

Jules31

@aha_1980

I disabled the "ResetCanController" option and I now get the error "Cannot load library pcanbasic".

Jules31

@jsulm
Yes, it is responding because I receivre frames with Pcan-View.

aha_1980

@Jules31 said in Do not succeed in reading and writting frames with peak system:

I disabled the "ResetCanController" option

What is that? Are you using a newer example than the one provided with Qt 5.12?

and I now get the error "Cannot load library pcanbasic".

As said, check that the DLL has the correct bitness.

Regards

Jules31

@aha_1980
That works, I put the correct dll:

However, it still does not work in my Qt Project.

Jules31

@Jules31

Another question: Does the PCAN-Basic_API also works with the PCAN-Ethernet Gateway DR from peak system ?

Thanks in advance.

aha_1980

Hi @Jules31,

However, it still does not work in my Qt Project.

Then please incorporate the fixes we mentioned above and show your modified code.

Does the PCAN-Basic_API also works with the PCAN-Ethernet Gateway DR from peak system ?

Currently not. Do you have such a device and could provide the needed adoptions to the peakcan plugin?

Regards

Jules31

Hi,

I will incorporate your fixes today.

I've just checked on peak-system website and it seems that the access to the CAN channels of a PCAN-Gateway is enabled via the new PCAN-LAN hardware type from PCAN-Basic library:

https://www.peak-system.com/PCAN-Basic.239.0.html?&L=1

Does anyone has tested to use P-CAN-Gateway with PCAN-Basic library yet ?

Thank you