UsbDk | Usb Drivers Development Kit for Windows | Change Data Capture library
kandi X-RAY | UsbDk Summary
kandi X-RAY | UsbDk Summary
UsbDk (USB Development Kit) is a open-source library for Windows meant to provide user mode applications with direct and exclusive access to USB devices by detaching those from Windows PNP manager and device drivers and providing user mode with API for USB-specific operations on the device. The library is intended to be as generic as possible, support all types of USB devices, bulk and isochronous transfers, composite devices etc. Library supports all Windows OS versions starting from Windows XP/2003.
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QUESTION
I'm trying to install and test my Coral Edge TPU. I'm following the instructions here: https://coral.ai/docs/accelerator/get-started/
The first step is to install drivers from the coral website, but I'm getting the following errors. I've tried running with and without admin, and uninstalling and installing again, but I get the same errors.
Has anyone else run into this issue? I'm on Windows 10.
...ANSWER
Answered 2021-Jan-18 at 17:04This is a bug in the coral software. According to this thread https://github.com/google-coral/edgetpu/issues/260 they messed up a few things in the newest version (at the time 2.5.0). Starting with a fresh virtual environment and using the release 2.1.0 and corresponding driver for Python 3.7 (3.8, 3.9 not supported as of 2.1.0) fixed the issue.
From that thread:
For now, I suggest rolling back to the older driver: https://dl.google.com/coral/edgetpu_api/edgetpu_runtime_20200728.zip
And you also need to remove your current tflite_runtime and downgrade it to an older version (make sure to change to the right python version):
pip3 install https://dl.google.com/coral/python/tflite_runtime-2.1.0.post1-cp36-cp36m-win_amd64.whl pip3 install https://dl.google.com/coral/python/tflite_runtime-2.1.0.post1-cp37-cp37m-win_amd64.whl Apologies, we are working to get this fixed ASAP
QUESTION
I am trying to print to a TM-T20II thermal printer so I can print receipts. Here is my code:
...ANSWER
Answered 2020-Jul-12 at 01:15Isn't it a problem with the printer's USB mode setting?
TM-T20II printer has the modes of USB vender-defined class (COM Port) and USB printer class.
The VID/PID is USB vender-defined class=0x04b8:0x0202 and USB printer class=0x04b8:0x0e15 respectively.
TM-T20II Technical Reference Guide page 89
You should be able to change it with the printer's setting utility.
Alternatively, try changing the PID designation to 0x0202 as is, or try communicating as a COM port instead of a raw USB device.
Or it is possible that the advanced printer driver or Windows print spooler is already using the device and other programs cannot be used.
If the device driver is installed, try uninstalling it.
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