Problem with TeleVue Focus Master
Posted: Tue Jun 12, 2018 4:21 pm
I've got a maddening problem with a TeleVue Focus Master. I can only get the application level software (i.e. FocusPal, TVFocusPlus or ASCOM via SharpCap3.1) to recognise the USB focus controller maybe once in 10 restarts of my PC. I've used USBDeview to analyse the USB devices attached to the PC, I can always see the "FocusMaster Focus Controller" device, it shows as succesfully enumerated and it is also visible as a HID device in DeviceManager (if you know which HID device to look at - need to search for the correct VID/PID). Unfortunately however, most of the time the FCUSB_DLL won't recognise the Focus Controller, and from there on its no dice.
I am a software engineer and have worked on USB HID a little bit. Is it possible that you can provide the source code for the DLL or some tips on how to fault find this? I am working on the principle that the DLL can't find the HID device for the Focus Controller - my machine does have an abundance of USB devices unfortunately.
I note that it can never seem to find the Focus Controller if it is plugged into a USB Hub, which is a pity because I want to use it on the scope, daisy chained off a USB Hub, but even getting it woking reliably off the PCs built in USB ports would be a bonus.
Obviously I have tried all permutations of ports/cables etc! In fact I have tried everything.
Oh, and I have had it working, so unfortunately I know what I am missing! Can you help me?
My PC is a Dell Laptop, 3x USB3 ports, other USB devices are ok.
I am a software engineer and have worked on USB HID a little bit. Is it possible that you can provide the source code for the DLL or some tips on how to fault find this? I am working on the principle that the DLL can't find the HID device for the Focus Controller - my machine does have an abundance of USB devices unfortunately.
I note that it can never seem to find the Focus Controller if it is plugged into a USB Hub, which is a pity because I want to use it on the scope, daisy chained off a USB Hub, but even getting it woking reliably off the PCs built in USB ports would be a bonus.
Obviously I have tried all permutations of ports/cables etc! In fact I have tried everything.
Oh, and I have had it working, so unfortunately I know what I am missing! Can you help me?
My PC is a Dell Laptop, 3x USB3 ports, other USB devices are ok.