I want to control my robot using wireless module(zigbee). I have a device FT232R for converting USB to Serial i/f. It is working on windows 7 but I am not getting how to use this device on Linux(ubuntu). Please help me.
Note: Actually my robot is working in slave mode( running on micro-controller). I will control it by sending command over serial wireless link(running on Linux).
If you can't find any existing drivers then libusb might help
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I can open my ESP32 Vroom32 device made by Espressif with a cp2101 chip on Ubuntu. I used Ubuntu to flash Micropython onto it, however when I try to connect with Putty, MPFshell or anything else on Windows 10 it will not work. I downloaded and installed the recommended drivers for it and also updated Windows which was supposed to load the driver as well. I can see the device and COM port in device manager but when I attempt to connect I get blocked. For example on MPFshell I get the message "Cannot connect to COM17"
It is a common reason for boards to show the "Cannot Connect to COM" error because of a bad USB cable.
Always check with another cable first, before getting deeper to the problem.
I'm trying to get data back from a magstripe reader and an rfid reader that are plugged into the raspberry pi and communicate via serial. I can connect to the readers but when I try to read from them I don't get anything.
Was wondering if the driver even works on the newer iot OS versions.
So I used the code located from this link! in conjunction with the driver install steps from the tutorial Rita shared and I was able to get the Serial Device's, open them and and start reading data.
I have an Adafruit Ultimate GPS on a USB serial interface and using the same UWP application can read data just fine on a x86 build on a desktop. When I try a ARM build on the PI3 (remote), everything appears to work, but the serial data read never returns. No timeout, nothing. On the desktop, it starts getting GPS data from the chip right away. I also tried the CustomSerial sample app and am getting the same result. I do have the manifest updated to show serial port access, so don't think that is the problem.
Any ideas would be greatly appreciated. Thanks.
Problem resolved, operator error. Prolific driver not supported, was trying to read data from on-board serial port. Move the GPS sensor to the on-board serial, all is working now. Apologies for the distraction.
I have a Metrologic MS1690 Barcode scanner that I'm trying to use with Windows 8.1, I get a Unrecognized Device: Device descriptor request failed error in devices and printers. The scanner gets no power from the computer when it is plugged in because of this. It usually shows up as a usb keyboard in windows 8 and 7, but with 8.1 it does not and I can't find an answer anywhere. Please help! Or even if someone could tell me how to get a generic usb keyboard driver for this thing that may help as well. Thanks.
The scanner gets no power from the computer when it is plugged in
Bit of a guess, but there was a change in Win8.1 that can affect HID devices like this. Such devices are now suspended when no application or service is accessing it. This can cause the device to misbehave if it depends on receiving timely power to operate correctly.
The workaround is to disable Enhanced Power Management for the device. The instructions are pretty elaborately spelled-out in this blog post. At break-neck speed: use Regedit.exe, locate the device in the HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Enum\ USB key and set the EnhancedPowerManagementEnabled value to 0.
The "solution" for me has been to add a PCI-E USB card, and use that for the scanner. I went with this one from Rosewill because it uses an NEC chipset which I have heard good things about.
After installing the provided drivers for the PCI-E card, the scanner seems to enumerate consistently (I have only been able to test it for a couple days so far).
According to the person I bought my scanner from, it's an issue with the USB chipset on the motherboard. Some are compatible and some aren't. If I had to do it over again, I would go with an RS232 cable and a power adapter instead of USB. I haven't tested that setup, but if your app needs serial data like mine does, it should be more reliable given that it's not dependent on the vagaries of integrated USB chipsets.
I'd like to modify a USB driver to send and receive USB data over a network.
Take for example, an iMac and a PC. I have an iPod plugged in to my PC (in NY). I want my iMac (in LA) to recognize the iPod as plugged in to a local USB port and be able to communicate with the iPod.
Forget my qualifications, or lack thereof (I have background in web, iOS apps, I've toyed with Java and C).
Where can I get source code for a USB driver for Windows that I can modify? Mac OS?
Any tips or pointers towards accomplishing my goal would be appreciated as well.
It looks like folks are coming up with something close to what you want. If you do decide to roll your own, the USB driver source you asked for is libusb.
On the Mac OS X end, drivers are built up in a stack. What you want to do should be relatively simple (nothing is really simple in kernel land). You need to create a driver that can communicate over ethernet with the PC and looks like a USB device to the driver matching software. Then everything else will happen automatically.
The source code is available for Apple's USB stack. You should also read about the IOKit API and IOKit device driver guidelines and IOKit fundamentals.
Oh yes and you say you have toyed with Java and C. To write device drivers on OS X, you'll need to learn some C++.
I suggest you to go see USBIP project. This is available on Linux and Windows, but not clear for MAC. If you can get a VHCI-Controller driver installed for MAC, we can kick start USBIP for MAC.
Sounds quite like this product, a bit unsure if theirs works over wide-area networks though.
I have a general idea of how I'd go about it, but not any specifics. Basically, I'd use the platform's driver development kit to write a USB device emulator on the client machine. I'd then add a virtual device to that system called "Networked USB Host", or something similar that maintains an open port to listen for communication from the server and passes it on to your virtual USB device. IIRC, the Windows DDK comes with a USB simulation framework that might be able to help you with this.
On the server, you'd have to hook into the USB subsystem to send raw USB packets to the client machine. libpcap and wireshark have USB capturing facilities for that, but I'm not sure if this works with winpcap and the Windows version of wireshark as well.
EDIT: Look at this for cross-platform USB capture alternatives.
You can buy OSR USB learning kit: https://www.osronline.com/custom.cfm?name=index_fullframeset.cfm&pageURL=https://www.osronline.com/store/index.cfm
This is actually small USB device with known interface. Windows Driver Kit (WDK) contains sample KMDF driver for this device: http://www.microsoft.com/whdc/driver/wdk/
This is good starting point to learn Windows Drivers development, and USB drivers development specifically. However, it is still far away from your problem solution.
Can't you use some sort of Remote Desktop?