Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [hid]

Human Interface Device, most commonly referring to a USB device, but can also refer to Bluetooth HID devices.

72 questions
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Bluetooth HID Module

I am trying to implement my own Bluetooth HID device (a kind of custom game controller), but am having trouble finding what I am looking for. I have only come across two solutions which seem slightly expensive to me based on the task. The two…
piepi
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Where do I lookup values for building a USB HID descriptor?

I'm trying to educate myself a bit on creating a USB HID descriptor in C for a PIC32 USB project I want to attempt. I've downloaded the HID Usage Tables document from http://www.usb.org/developers/hidpage/ and trying to figure out where the actual…
josef.van.niekerk
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Mouse dots-per-inch... how to tell?

I'm creating an embedded application that hosts a USB mouse. I'm trying to make it generic for any USB HID mouse/trackball/whatever. I've discovered that mice report differently... while they mostly all report +-127 relative X/Y coordinates the…
user16719
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USB: what are the advantages (or disadvantages) or using HID over serial-over-USB?

Disclaimer: I'm a novice at electronics and even more so to working with USB, please bear with me if I misunderstand some of the essentials behind how USB works. Any correction welcome! The scenario: with a group of friends we are building a robotic…
mac
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6
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2 answers

How to uniquely identify USB HID class device?

I would like to identify a USB keyboard uniquely(something equivalent to unique mac-id for the Ethernet cards) on a computer. Does the USB HID profile has a support for such identification ? If so what is the field called ? I understand that VID and…
Bleamer
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Are any USB-to-SPI *slave* bridge chips readily available?

I would like to interface a battery-powered device to USB, without requiring users to install drivers. Data transfer requirements are moderate, so the ~60kbytes/sec of HID mode would be fine, but I don't want to be much slower than that. The main…
supercat
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Why does GET_REPORT on my HID Keyboards sometimes return an empty packet?

I'm writing boot firmware on a PowerPC board, and I have a problem with spurious USB keyboard repeating. My firmware is based on u-boot: after enumeration it puts the keyboard into boot protocol, then polls it by sending GET_REPORT control packets.…
Adrian Cox
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This device cannot start. (Code 10) error in Windows 7

I'm trying to fix an error This device cannot start. (Code 10) with a USB HID device I'm building. Here are some details on my project: IDE: MPLABX on Mac OS X MCU: PIC32MX250F128B Programmer: Microstick II Git Repository:…
josef.van.niekerk
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How to Dim HID Lamps

I am building a street lamp controller that should be able to set a street lamp to on, off, or dim state. I have successfully built an incandescent lamp dimmer (phase dimming - using zero cross detector, AVR microcontroller, and controllable TRIAC…
bonchenko
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Reading useful data from barcode input

I have interfaced a HID bar-code scanner with LPC2468. It is sending data when i scan a bar-code, it sends a lot of bytes when i make a scan, how can i know out of these bytes which are the bytes corresponding to the scanned bar-code. For eg:If i…
Sarao
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Modifying Bluetooth HID Descriptor from 2 to 4 axis gamepad - Arduino Nano BLE

I am trying to modify an existing Arduino library (https://github.com/tcoppex/mbed-ble-hid go to src/services and its the HIDgamepadservice C++ and H files) to make the HID gamepad 16 button and 4 axis. I managed to get 16 button working by…
user2646256
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What usb-class for a device intended to be as future proof as possible?

I am writing specifications for a product and need help to minimize its future need of maintenance. In order to be able to be (optionally) monitored from the Internet the device is supposed to have a USB CDC port to connect it to a computer (I am…
Caterpillaraoz
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Microchip RN4870: Can I create a custom GATT Characteristic Descriptor?

I am reading through the RN4870 user guide documentation to try and work out how to implement a HID GATT Service. When I look at GATT specification viewer for the HID service, specifically at the "Report" characteristic, it appears to me I need…
Robert Massaioli
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Implementing a Bluetooth HID device

I built a speed detector (of a rotating wheel) based on PIC32. For now I'm sending the speed to the PC through UART, but I'd like to be sending it through Bluetooth as a HID device because I'd like to use OS' drivers. I've been googling for quite…
Luka
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Composite HID gamepad descriptor works on Windows but not on Linux

I am building an USB adapter for an old game controller. So far everything is working fine. My HID descriptor looks like this: 0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */ 0x09, 0x05, /* USAGE (Game Pad) */ 0xa1, 0x01, …
puyawsiht
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