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I'm attempting to run the Tiny USB MSC example (Provided in the ESP-IDF github repository), and it doesn't appear to work. Initially, the example flashes, but only outputs the below and hangs on '...
somebodywhodoesntknowmuch's user avatar
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I have an embedded system where 2 microcontrollers communicate over Full Speed USB bus. The host is an iMX RT1060, the device is an LPC55S69. From EMI standpoint it would be beneficial to use Low ...
Gyorgy Szekely's user avatar
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1 vote
1 answer
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I am really trying to understand the ADC2.0 spec to create a really simple USB UAC2.0 8 bit microphone. My device enumerates fine, but the driver doesn't like it (it says it cannot start). Q1. How do ...
Eman's user avatar
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3 votes
1 answer
148 views

I am homebuilding a USB driver on STM32. I have managed to get the device to enumerate which is awesome, but only when I disable all the strings (set all ID's to 0). Right now, when I set ...
Eman's user avatar
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0 answers
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While I'd appreciate the answer, I'd really like to understand how to diagnose what's happening in Python. The basic issue is that Raspberry PI OS or a driver causes some USB connections to disconnect ...
ozindfw's user avatar
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1 answer
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I am developing a .NET MAUI Mac Catalyst app (sandboxed) that communicates with a custom vendor-specific HID USB device. Within the Catalyst app, I’m using a native iOS library (built with Objective-C ...
Swetha's user avatar
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0 answers
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I'm currently using a SBC (a Raspberry Pi Zero 2W) to receive data from a device (let's call it Sensor). Sensor is connected to the micro USB port on the SBC through an adaptor with FTDI FT232R USB ...
Isaia Ismaele's user avatar
  • 55
1 vote
0 answers
100 views

I have a list of 12 serial COM ports and I am trying to pick only the ones made from a specific Manufacturer, "FTDI". For some reason, I cannot pull this info without using the Systems....
Katie Kelly's user avatar
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1 vote
0 answers
74 views

I have a C# application that uses the USB serial device mounted to /dev/ttyUSB0. I need to send a status request to this device, which I can do very easily with printf "\00\48\ee\ff" > /...
ryansin's user avatar
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1 vote
1 answer
445 views

I’m testing on macOS Tahoe 26.0 and noticed that running the following command gives me either no output or errors: system_profiler SPUSBDataType On earlier versions of macOS this would list all USB ...
babisa adumbire's user avatar
  • 361
3 votes
1 answer
99 views

As a project to learn libusb, I am writing a driver for my old Logitech QuickCam Chat from 2006. To clarify, the camera quality is awful and I have no intention of using this for anything other than ...
Charlie's user avatar
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0 answers
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I have a Digilent Nexys Video Artix-7 FPGA development board. This board has two Micro USB ports. One is used for UART-USB communication, and the other one for uploading bitstreams(as a JTAG). I ...
Arda Ünal's user avatar
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0 answers
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When I was writing a USB driver, I used the usb_bulk_msg function to send data. When I used an array created with stack space, I could only send data under 8 bytes. If I sent more than 8 bytes, the ...
Jiawei liu's user avatar
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0 answers
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I'd like to know how I can connect the Epson ePOS SDK to Android using Flutter. From what I've learned, the SDK isn't available for download and installation in my project. Therefore, I need to write ...
MojiiJP's user avatar
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0 votes
1 answer
171 views

I have been attempting to read data from a TEMPerHUM USB temperature and humidity device. I can read the device from Linux. I have tried many things, pyusb, wmi, libusb, etc. None seems to work. I get ...
tomdean1939's user avatar
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6 votes
2 answers
465 views

Context I bought a CM749 UGREEN Bluetooth 5.4 USB adapter for my Nixos machine. It is recognized by lsusb as ID 33fa:0010 USB2.0-BT, but is not detected by KDE/Plasma's bluetooth daemon. I dug deeper ...
Seth Martin's user avatar
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1 vote
0 answers
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I've been trying to program a CH552 chip using assembly, however, I've ran into a bit of a problem when trying to implement USB. My device replies to the first GET_DESCRIPTOR (device) fine, as shown ...
Boris Kaptsanov's user avatar
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-2 votes
1 answer
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I am trying to share Xbox One controller that is connected to my RPI 5 bluetooth to my windows computer. In past few days, I couldn't find anything about Bluetooth over IP or Bluetooth over USB, but I ...
ENGO_150's user avatar
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1 answer
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I had installed XHSETT in my laptop and suspended my USB, so usb stopped working, and then I forgot I did that. XHSETT - https://www.usb.org/document-library/xhsett Later When I tried to use the USB ...
LAPTOP-5's user avatar
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1 vote
1 answer
58 views

According to the USB Mass Storage Class Bulk Only Transport spec, when I want to read a block of data from a USB flash drive, I do the following: Write a CBW describing the read request to the device'...
TheHans255's user avatar
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0 votes
0 answers
285 views

I use the stm32g0b1 microcontroller to USB Host. I use the HAL library from STMicroelectronics. Class for FS IP: Communication Host Class (Virtual Port Com). And it works great with other ...
red15530's user avatar
  • 11
2 votes
0 answers
48 views

I'm using FunctionFS on Linux to implement a USB gadget with 3 endpoints: EP1 IN (Interrupt) EP2 IN (Interrupt) EP3 OUT (Bulk) The gadget fails to bind to the UDC (echo <udc> > /sys/kernel/...
Dongju Park's user avatar
  • 39
0 votes
1 answer
100 views

Problem Description I'm developing a USB 2.0 gadget using Linux FunctionFS (ConfigFS) on an embedded device running kernel 4.9.118. My goal is to implement a vendor-specific bulk data interface that ...
Dongju Park's user avatar
  • 39
2 votes
1 answer
195 views

I'm using Qt Creator with Qt 6.9.0 to develop an Android application. The code works fine, and I can successfully build and run the app on my Android phone. Now, I'm trying to access a USB device ...
Anri's user avatar
  • 31
1 vote
0 answers
45 views

Why does the USB stop receiving cached data when it reaches a certain amount in the official routine of xusbps_audio_ example in zynq? In the experiment, the address of the WrRamDiskPtr array is ...
梁嘉轩's user avatar
  • 11
0 votes
1 answer
51 views

I’m trying to communicate with a WaterRower S4 Performance Monitor (firmware version 2.10) over USB, using standard serial communication. The connection itself works, but I’m having trouble accessing ...
Phil's user avatar
  • 1
1 vote
1 answer
76 views

Doing some Linux Kernel USB driver learning. I've got a Seeeduino Xiao SAMD21 and have changed the VID/PID (yeah I know) so it looks like "my own" device. The Xiao's program is simple: take ...
BarkerChippy's user avatar
  • 131
0 votes
0 answers
53 views

My Flutter POS app works with a Sunmi Android 13 device (dual-screen) and a Possify USB printer. Normally, printing works flawlessly. However, after rebooting the Android device, the printer stops ...
Gu Ki's user avatar
  • 13
0 votes
1 answer
54 views

Problem Description I have a Datalogic GD4400 barcode scanner connected to a Raspberry Pi/Linux system via a CH340 USB-to-Serial adapter. When scanning barcodes, the scanner outputs encoded data ...
deep freeze's user avatar
  • 51
2 votes
0 answers
49 views

I want to build a simple C program that uses libusb to interface with a USB device that exposes one interrupt endpoint. This device accepts and sends data in DATAx packets composed of exactly 64 bytes ...
user30474530's user avatar
  • 21
2 votes
1 answer
111 views

I’m working on a personal prototype where I’m building a selfie phone case that has a custom screen on the back. The iPhone connects to the case via USB-C, and I want to display the live camera feed (...
Fergus McKenna's user avatar
  • 29
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0 answers
148 views

We already have a setup for a product where we don't have any free pins for USB SOF, will RNDIS device mode work without SOF signal, or I need to push my team to redesign the pinout and use SOF signal?...
kurta999's user avatar
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0 answers
58 views

Would like to test using the USB/RNDIS protocol. USB/RNDIS is sometimes used to pass Ethernet over USB hardware. I Understand that some USB Ethernet Adapters use this protocol. So far I have tried 2 ...
st2000's user avatar
  • 276
1 vote
1 answer
70 views

I wrote the apk which use FTDI usb to serial converter. I use Samsung Galaxy Tab Active 4 Pro 5G and Docking station https://www.gamberjohnson.com/product/7160-1418-50/ This docking staion expands 2 ...
savva's user avatar
  • 61
1 vote
0 answers
58 views

I'm working on extending Stanford's Pintos OS to support USB 3.0 HID devices using the xHCI specification (Rev 1.2, May 2019). Currently, the OS only supports UHCI (USB 1.1) and partial EHCI (USB 2.0)....
Justin Ridenour's user avatar
  • 21
0 votes
0 answers
68 views

I was trying to clone coding one of the open class on the youtube. It was using JPA, and I was using eclipse. JPA was occuring a problem; it was continually disconnected my USB which includes the ...
adover's user avatar
  • 27
1 vote
0 answers
41 views

I have 8-channel Saleae Logic Analyzer connected to PC via USB. When I try to use higher sampling rates (16 MS/s), I receive Timeout Error stating that the analyzer ran out of buffer due to delays on ...
peto_321's user avatar
  • 19
1 vote
1 answer
113 views

I've read through the documentation for the USB HID class and the USB usages tables, and looked at examples provided. Here: https://www.usb.org/sites/default/files/hut1_6.pdf https://www.usb.org/sites/...
Shaw Kobayashi's user avatar
  • 71
2 votes
0 answers
81 views

So I use a USB audio device for recording via Android's AudioRecord framework. I need to send a USB control transfer to the device, as this enables a function, that otherwise is not available under ...
red symbol man's user avatar
  • 98
1 vote
1 answer
48 views

I have a USB device that replies {0x00 0xFF 0x01 0x03} when you send him {0x00,0xFF,0x01,0x02}. I'd like to implement a ping test, sending commands and computing an average response time. Here is my ...
jpo38's user avatar
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0 votes
0 answers
120 views

I'm trying to learn USB linux device drivers to implement a project idea I have: Primary device is a Rasp Pi with USB port Secondary device is a custom USB stick that I'm going to design with some ...
androidFan's user avatar
  • 611
0 votes
0 answers
97 views

I am a junior AOSP developer, I have myservice application with type of coredomain, type myservice, domain, coredomain, mlstrustedsubject; I need to open functionfs objects, but adding allow myservice ...
Ali Razmkhah's user avatar
  • 270
0 votes
0 answers
71 views

Problem Until yesterday my OnePlus 11R was working perfectly with Android Studio. However, since this morning, I'm facing some issues. When connecting my device using USB, it stays connected for ...
vivek shah's user avatar
  • 1
0 votes
1 answer
223 views

I am a beginner with USB and libusb. I am looking for libusb 1.0 code, capable of reading data from a usb mouse. I have found some relevant code online, e.g. https://github.com/Mathias-L/STM32F4-...
Christos's user avatar
  • 1
1 vote
0 answers
94 views

Hi StackOverflow Community, I am encountering an issue while implementing USB CCID functionality on an STM32F4 MCU. I recently integrated the CCID driver from the following repository into my project: ...
Ayoub Oubrahim's user avatar
  • 11
1 vote
0 answers
70 views

I changed the code in kernel-source/drivers/usb/core/driver.c to: void usb_deregister_device_driver(struct usb_device_driver *udriver) { pr_info("%s: deregistering device driver %s\n", ...
Henry Leong's user avatar
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0 votes
1 answer
49 views

In the Android API reference, UsbDevice objects have a function, getDeviceId(), that returns a unique integer ID. The API reference notes that IDs are not persistent across disconnects. However, the ...
SoItBegins's user avatar
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0 votes
1 answer
137 views

I have an RFID Reader from a company called Metratec. I actually enjoy this reader very much and there is a detailed PDF and prewritten packages for Java, Python and .NET. Now I want to write my own ...
Willi M's user avatar
  • 1
0 votes
1 answer
327 views

Here my problem: most of Qnap's NAS feature a "copy" button on the front, next to a USB-A port. That button will copy the content of any hard-drive plugged to the USB port next to it. I ...
Augier's user avatar
  • 374
2 votes
1 answer
236 views

I am running in a simple embedded sysytem (busybox based), so prefereably answers should not be systemd/udev based, but if that is the only solution I will take it. I have 2 usb 3.0 ports, and 2 ...
Baruch's user avatar
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