when I run the code
import usb
devices = list(usb.core.find(find_all=True))
print(devices)
the program only outputs a [], although devices are connected via usb.
need help
I just wanted it to spit out a list of found usb devices
Related
I'm trying to make an Android application for Android Things running on raspberry pi that takes USB joystick inputs (including DJI Mavic controller) and passes it over BLE HID as a gamepad.
Windows, Oculus Quest and Mac all recognize it as a gamepad, but when I try to connect to it, they connect and disconnect right away. I'm not sure why
Is there any tool on any OS that logs the BLE HID pairing process to find out what went wrong?
https://github.com/darvin/USBMavicBLEHIDAndroidThing/blob/master/app/src/main/java/jp/kshoji/blehid/HidPeripheral.java
I currently have a sensor attached to a USB to RS485 Serial converter cable which is plugged in to a raspberry pi. I've tried using the ftdi d2xx drivers to connect to it, but so far I can't read any data and while the writes don't fail, I'm not sure they're working.
This setup works on Windows with the custom software provided by the manufacturer, but I can't find anything on getting it to work on a linux system. Is this possible?
We are trying to make an USB HID enumeration to simulate a keyboard device on a BLED 112 (with MCU C8051): http://www.silabs.com/products/wireless/bluetooth/bluetooth-low-energy-modules/ble121lr-bluetooth-smart-long-range-module1
We read in the BLUETOOTH SMART MODULE (last version : 12/20/2016) that : "There is no support in the current BLE stack for other types of USB enumeration such as USB HID or other protocols".
But we found examples to make HID keyboard, but only in one way : computer to usb dongle.
So we would like to know if it is possible to make an HID usb enumeration where the dongle send keyboard event to the computer.
If someone have clues, example, or other, it will be great
thanks for your help.
just for information, this is the response given by the silicon labs technical team :
"Unfortunately that is not possible, the BLED112 enumerates as a USB CDC device only. It communicates with the PC using BGAPI messages which is our proprietary protocol to interface with our modules."
I am learning to program a USB device (iBall 3.5g USB Dongle) using libusb.h header library.
Until now I am able to identify my device using the Vendor ID and also open the device for operation.
As a next step I would like to know the available commands (or the controls) for example : command to scan the surroundings for available GSM networks.
Obviously I will have to talk to the devices' firmware to extract the necessary information.
I tried to search for the technical datasheet for the 3g dongle, but couldn't find any.
The dongle is powered by a Qualcomm chip
Do you know any of the methods in which I can get the control commands for a usb device ?
Thanks in advance.
There is no simple procedure for figuring out what commands a USB device has. You need to use a combination of looking at the descriptors reported by the device, seeing if the device supports any particular USB device class, reading the USB specification, and maybe doing some reverse engineering using a protocol analyzer.
A good first step would be for you to use lsusb -v to print human-readable descriptions of the device's USB descriptors.
I am writing an application which monitors some devices connected to the computer. I loop over all the devices like this :
from pyudev import Context, Monitor, MonitorObserver
context = Context()
monitor = Monitor.from_netlink(context)
for device in context.list_devices():
print_device(device)
USB devices are detected, along with most of built-in boards (ethernet, ...), but no clue of devices connected in Bluetooth (paired and connected in rfcomm).
Am I missing something, or is Pyudev simply not capable of discovering such devices ?
udev (and thus pydev) is only meant to tell you about devices on the local system. It can't tell you about remote devices.