USB Host Overcurrent Protection

Started by linsky in comp.arch.embedded10 years ago 1 reply
USB

Hi I'm a new USB port designer. I am wondering that if my board do not need the USB host to supplier voltage through USB port. Should I need...

Hi I'm a new USB port designer. I am wondering that if my board do not need the USB host to supplier voltage through USB port. Should I need to supervise and protect the VBUS for overcurrent? Thanks! --------------------------------------- Posted through http://www.EmbeddedRelated.com


One USB device, Two tasks

Started by Johnson in comp.arch.embedded9 years ago 4 replies

I have only one USB device port in my development board (running Linux), no Ethernet, no UART. I would like to use the USB device port as an...

I have only one USB device port in my development board (running Linux), no Ethernet, no UART. I would like to use the USB device port as an interface by parsing and responding to the commands from the external users. I also need this USB port to output debuging information. Here is my proposed solution: 1. Create virtual ethernet ports via the USB device. 2. Run GDB Server at the board s...


PIC to USB to 802.11g to USB to PC ?

Started by bit eimer in comp.arch.embedded15 years ago 15 replies

Hi all, I'm usually just a lurker. But now I'm getting interested in doing a link from an 'F877 to a PC: PIC s/w -> UART -> USB...

Hi all, I'm usually just a lurker. But now I'm getting interested in doing a link from an 'F877 to a PC: PIC s/w -> UART -> USB (adapter) -> 802.11g (adapter) --//--> 802.11g (adapter) -> USB -> Win XP -> app s/w Have chosen neither the USB adapter nor the 802.11g adapter yet. And I'm fairly concerned about the potential complexity of USB and 802.11g protocols that I will hav


isolated USB

Started by Mouarf in comp.arch.embedded13 years ago 17 replies
USB

Hi all, I'm looking for a way to get galvanic isolation of a USB device (whatever it is). Do you know somewhere a company or a product or a...

Hi all, I'm looking for a way to get galvanic isolation of a USB device (whatever it is). Do you know somewhere a company or a product or a way to get this isolation, I think that optocoplers won't fit the bandwidth. I need such product for USB high speed or at least USB full speed. Thanks in advance for your help.


FPGA board for USB experiments?

Started by Dave Farrance in comp.arch.embedded14 years ago 21 replies

Hi. I want to get my brain around USB interfaces, how to design the hardware and the software, and eventually to find what economic hardware...

Hi. I want to get my brain around USB interfaces, how to design the hardware and the software, and eventually to find what economic hardware solutions are available, and how USB hardware interfaces can be arranged to make the best use of generic USB drivers to minimise problems associated with driver installation. It's not something that I've been able to investigate in the time-limited pr...


Need help to start with USB

Started by aleksa in comp.arch.embedded11 years ago 12 replies

I need to read/write sectors on USB flash memory mass storage. (I hope this is the correct title) AFAIK, this has two requirements: 1....

I need to read/write sectors on USB flash memory mass storage. (I hope this is the correct title) AFAIK, this has two requirements: 1. hardware: USB connection. 2. software: handshaking with USB devices. I think/hope that (1) will be easily solved with AT89C5131. That leaves me with number 2: Is the protocol freely available? What is the protocol's name, ie. what am I searching fo...


Bios commands and usb

Started by mmmm in comp.arch.embedded11 years ago 6 replies
USB

Hi, i want to communicate with usb device using bios command.I know that bios support hid class and mass storage class, but does it support other...

Hi, i want to communicate with usb device using bios command.I know that bios support hid class and mass storage class, but does it support other usb classes (and is it full support )?is it possible to communicate with usb device by sending to usb port bytes, treating classes as unneeded element. how it is during pc initialization (before system starts) is usb device classified (hid, cdc, msd...)...


usb to serial port adapter

Started by Nottingham in comp.arch.embedded14 years ago 6 replies

Has anyone seen a device that allows older serial ports only computers to use USB devices? I can only find RS232 to USB adapters turning USB...

Has anyone seen a device that allows older serial ports only computers to use USB devices? I can only find RS232 to USB adapters turning USB ports to RS232. I need the other way around and to work on NT.


Devantech USB-I2C R286-USB-I2C board

Started by mInfo in comp.arch.embedded13 years ago

Hello, I bought the Devantech USB-I2C R286-USB-I2C board. The Devantech USB- I2C module is a low cost USB to I2C module, with a simple command...

Hello, I bought the Devantech USB-I2C R286-USB-I2C board. The Devantech USB- I2C module is a low cost USB to I2C module, with a simple command set, and interfacing to any I2C device. I'm trying to set the I2C interface between my I2C board and R286-USB-I2C? Also I do need a help in User Interface development for Microsoft Windows. It should be similar to your USB_I2C_SRF08.exe software b...


USB frame grabber

Started by sc in comp.arch.embedded14 years ago 1 reply
USB

hi to all!!!!!!!!! can you please suggest me some video processors that i want to include in my design of USB frame grabber.let me be more...

hi to all!!!!!!!!! can you please suggest me some video processors that i want to include in my design of USB frame grabber.let me be more clear.i am under process of designing of one frame grabber board which will receive input from USB cameras via USB 1.1 port and wil pass the frames to the PC via another USB port.so for this purpose do i need any video processor in my design or as i am re...


All USB & only USB

Started by Anonymous Coward in comp.arch.embedded12 years ago 6 replies

We were kicking around some ideas today for low-performance embedded systems for quick and dirty solutions to simple tasks. We often throw...

We were kicking around some ideas today for low-performance embedded systems for quick and dirty solutions to simple tasks. We often throw a BasicX controller (http://www.basicx.com/) at such problems, which is fine until we need to communicate with the user; adding keypads, LCD displays, etc. is a bit of a PITA. So we started talking USB microcontrollers. Once you have a USB port, u...


config for USB peripheral mode device

Started by Dennis in comp.arch.embedded12 years ago

I am running 2.6.18 on a ARM board and I have a USB OTG device that I only need to run as a USB peripheral, not as a host USB device. I am...

I am running 2.6.18 on a ARM board and I have a USB OTG device that I only need to run as a USB peripheral, not as a host USB device. I am having some problem getting it to work. Can someone see my config if it looks OK? Also I need to run usbnet on my FC5 laptop. I did a modprobe usbnet and it completes without error. But I dont see a usb0 device. Does this device only shows up if a USB...


High speed USB 2.0 OTG component availability

Started by Brad S in comp.arch.embedded15 years ago 27 replies

Hi, I'm searching for a chip that operates to the high speed USB 2.0 On-The-Go (OTG) standard. We currently use the Cypress FX2...

Hi, I'm searching for a chip that operates to the high speed USB 2.0 On-The-Go (OTG) standard. We currently use the Cypress FX2 (CY7C68013) to provide a high speed USB 2.0 interface to a host PC and now we would like to add a USB hosting capability that would allow us bypass the host PC and download data directly to a high speed USB 2.0-enable hard disk drive. This application seems very...


reading the usb

Started by Mary Walker in comp.arch.embedded13 years ago 17 replies
USB

Hi, I am feeding data from an external modem using a serial-usb convertor dongle (I am a newbie when it comes to reading USB devices by the...

Hi, I am feeding data from an external modem using a serial-usb convertor dongle (I am a newbie when it comes to reading USB devices by the way). I have written a c program to read the bytes on /dev/ttyUSB0 and this works fine. However, if another usb device was plugged into the computer before my device then presumably I would need to read ttyUSB1 instead. So how do interrogate the...


wireless USB controllers

Started by S45 in comp.arch.embedded13 years ago

Hello, I am a board design engineer( < 6 months experience). I wish to design a wireless USB docking station. At the moment I am into...

Hello, I am a board design engineer( < 6 months experience). I wish to design a wireless USB docking station. At the moment I am into selection of parts(wireless USB controllers). Is there any wireless USB hub controller/ wireless audio controller/ wireless peripheral controller available in market? When i googled, i found there is a wireless USB device wire adapter (DWA) from NEC, wirel


USB slave on a PC

Started by Jason Curl in comp.arch.embedded15 years ago 7 replies

Hello, I have a small PC104 device with one USB port. As of yet, I'm not too familiar with USB, except to know there is exactly 1 master and...

Hello, I have a small PC104 device with one USB port. As of yet, I'm not too familiar with USB, except to know there is exactly 1 master and many slaves. I would like to know if it is possible to make the PC104 device look like a slave, so that I can have it emulate a "usb storage device". It's used for a logger, and eventually I'll insert a harddrive (instead of the now current fla...


How do I programmatically send signals to USB?

Started by Anonymous in comp.arch.embedded13 years ago 4 replies
USB

Hello How do I control voltages to pins of the USB programmatically? For example, I'd like to say send a signal to individual USB pins...

Hello How do I control voltages to pins of the USB programmatically? For example, I'd like to say send a signal to individual USB pins (if that's applicable in USB) how do I do that ? Also what's the appropriate newsgroup for this question? Thanks .


Issue with the MAX3421 USB IC with the M32C controllers

Started by durai_ece123 in comp.arch.embedded12 years ago

Hi, We are using the MAX3421 USB-HOST/PERIPHERAL Controller interfaced with the M32C87 controller through SPI for the Mass Storage device...

Hi, We are using the MAX3421 USB-HOST/PERIPHERAL Controller interfaced with the M32C87 controller through SPI for the Mass Storage device operation. We are facing some problem with that. We are putting the M32C Controller into Sleep (STOP mode) mode and not the MAX3421, if the USB host is not sending any data to the controller (USB is disconnected) for 20 secs and once if we connect the USB ca...


USB device to PC communication

Started by Pravin in comp.arch.embedded13 years ago 1 reply
USB

Hi all, Has anybody worked on USB communication with PC? Whether vb or vb.net supports USb communication like microsoft's comm control. While...

Hi all, Has anybody worked on USB communication with PC? Whether vb or vb.net supports USb communication like microsoft's comm control. While in serial communications we can test data transmisssion by windmill or by simply hyperterminal. Is any similar s/w to test commnication with PC, mena we'll be able to check endpoint transfer n other enumeration of USB. Kindely share ur views ASAP......


USB JTAG simultaneously

Started by ksas...@gmail.com in comp.arch.embedded13 years ago 1 reply

Hello, I am working on a project using the i.MX21 processor having the ARM926EJ-S core. The processor contains the USB controller on chip....

Hello, I am working on a project using the i.MX21 processor having the ARM926EJ-S core. The processor contains the USB controller on chip. The board also has a JTAG interface for debugging. My current problem is that, I need to write a small basic driver to check if the USB sub-system is working on my hardware. Now need to use two USB ports of my development station (Windows PC) ...