cyusb_lib = NET.addAssembly('d:\Matlab\FX3\CyUSB.dll') %Load the dll from wherever it is on your computer
devList = CyUSB.USBDeviceList(CyUSB.CyConst.DEVICES_CYUSB); % Fill a USBdeviceList object with all the details of the devices using the cypress driver
%you probably need to create callback functions for usb events (I called mine FX3_attach and FX3_detach). I haven’t made them useful yet but mine just looked like
function ret = FX3_detach(sender, args )
'detach callback called'
args.FriendlyName % prints the name of the device that was detached
end
then you can attach the listener using:
hAttached = addlistener(devList,'DeviceAttached', @FX3_attach);
hDetached = addlistener(devList,'DeviceRemoved', @FX3_detach);
% You can test the callbacks by pressing the reconnect button on the Cypress Control Centre
%loop through all the devices to find the one you want
for i=0: (devList.Count -1)
if ( devList.Item(i).FriendlyName == ‘Cypress FX3 USB BootLoader Device’); % or whatever you set the name to, could alternatively check Item(i).ProductID == 243
myDev = handle(devList.Item(i));
break;
end
end
myEndpts = handle(myDev.Endpoints); % seems to be much easier if you create a handle to the endpoints as only the first of each type is automatically listed. while with a handle you can select any of them
myEndpts.Length %tells you how many you have
% myEndpts(1) should be the control endpoint
%for my code endpoints 3 and 4 are setup as bulk out and bulk in. they are also set to loopback data. So to send in data
myEndpts(3).XferData(data, length(data));
%to receive data you need to set up a byte array first
rxBuffer = NET.createArray('System.Byte', length(data)); % fine as long as the length of the buffer is >= length of data returned
myEndpts (4).XferData(rxBuffer,length(data))
