Hello,

I am attempting to connect with a USB device using the CyUSB.dll libraries using Visual Studio. I was using the template here: http://www.cypress.com/?docID=28357. I haven't gotten too far. So far this is what I have.

 USBDeviceList usbDevices = gcnew USBDeviceList(CyConst::DEVICES_CYUSB);

Which is adapted from:

usbDevices = new USBDeviceList(CyConst.DEVICES_CYUSB);

Used in the above mentioned template. I am doing this in Visual C and the template is in C#; so I am assuming that my issues are arising form this. Here is my compiler error:

 1>Driver.cpp(9): error C2664: 'CyUSB::USBDeviceList::USBDeviceList(unsigned char)' : cannot convert parameter 1 from 'CyUSB::USBDeviceList ^' to 'unsigned char'

1>          No user-defined-conversion operator available, or

1>          There is no context in which this conversion is possible

I don't understand why this is causing an issue for me? This line compiles fine:

unsigned char option = CyConst::DEVICES_CYUSB;

It even prints a value for option if I print it. However passing option to the UsbDeviceList constructor throws the same error. I am somewhat new to Microsoft development, so any advice would be nice.

Thanks

Most probably VS expects you to explicitly type cast CyConst::DEVICES_CYUSB to ((unsigned char)CyConst::DEVICES_CYUSB).

Regards,

Anand

It doesn't seem like this is the issue. After the change this is what I have.

USBDeviceList usbDevices = gcnew USBDeviceList((unsigned char)CyConst::DEVICES_CYUSB);

And here is the compile error:

1>Driver.cpp(9): error C2664: 'CyUSB::USBDeviceList::USBDeviceList(unsigned char)' : cannot convert parameter 1 from 'CyUSB::USBDeviceList ^' to 'unsigned char'

1>          No user-defined-conversion operator available, or

1>          There is no context in which this conversion is possible

1>  Generating Code...

This doesn't make sence to me as I can store CyConst::DEVICES_CYUSB as an unsigned char. And when I do and pass it to the constructor I still get this error.

Interesting. Please attach your project here so that I can figure out what exactly is going wrong.

Regards,

Anand