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Can we use the USB port to a serial device?

I have a piece of old equipment at work that i use a DOS program and a USB to serial adapter with a null modem cable to back up files off of the equipment. I installed DOS box and it runs my equipments program perfectly. Is it possible to communicate through the XOOM's USB port to my equipment using a USB to Serial adapter and null modem cable to do this with? Any help or advice would be great.
Thank You,
-Nathan

I guess I should take that as a NO!!!. I will pay to make this happen though!!

Bump
Sent from my PC36100 using XDA App

those usb to serial adapters use a Prolific chipset. Linux requires a kernel module to work with them. I suspect you'll need to build the kernel module and add a script to insmod it.

My boss will gladly pay someone to get this to work. If there are any Devs that want this project contact me and we can get this going. I know i can approve 1K to make this happen.

It can be done.
I have currently got my xoom setup so that I have a usb serial adapter connected to it for debugging purposes.
Do you know what chipset your usb to serial adaptor uses? I can then check if it is supported by the linux kernel.

evonate said:
My boss will gladly pay someone to get this to work. If there are any Devs that want this project contact me and we can get this going. I know i can approve 1K to make this happen.
Click to expand...
Click to collapse
I'm in. We'll start research. Sounds like fun.

Sign me up too. I would love to serial into Cisco devices with my xoom.
The following pieces of information i have already:
My usb2serial Adapter uses the prolific pl-2303 chipset
it is driven by the pl2303 kernel module.
the module depends on the usbserial module, which is already in tiamat as well as stock (its needed for the 3g modem i think)
So if i am correct we need the pl-2303 kernel module and a piece of software (minicom, cu) to use the serial (as far as i know there is no software in the market for this)

ok, i took a quick look at the tiamat git repository and it contains the pl2303 driver.
Now i am going to try to compile my own tiamat kernel
First time compiling linux for an android device

I would love to see this happen. I have tons of Cisco swithes and routers that I always have to configure on the fly. I know I can buy a bluetooth adapter but still have to power that :-( Would love to be able to hookup my otg cable, then my usb to serial, then to my console cable to configure everything.
Just not sure how to get the usb serial drivers installed on android :-(
If this ever gets working then my IT dept. will be getting a Xoom as well.
Thanks,
Ken~

Any updated news on getting this to work? Really don't want to spend $60 for a bluetooth serial adapter.
Ken~

I can try and include a few optional modules for the next tiamat release for usb serial devices

This is an old thread but in case ...
I also have to do serial communication with an old printer.
For now, I'm trying to prototype with an arduino mega using a trendnet usb to serial adapter.
I'm using the sample app on the market of this lib :
http://slickdevlabs.com/slick-usb-2-serial-library/
I actually can send and receive bytes on the xoom.
The only problem for now is that characters receive or send are not correct. I Don't understnd but still searching.
Any way, it should work ...
Mike

install bt5 and then install minicom under bt5. The pl2303 module with the pl2303 usb serial adapter does this very well.

bt5 you mean "backtrack 5" ?
I must use default rom ... My customer doesn't wan't to loose it's warranty ...
And usage of Motorola xoom is sure.
It might be another tablet.
Using capabilities that only requre Android 3.1 (without root) and a USB Host allow to change of device easily.

[Q] usb webcam's

usb webcam's tf101 mounted in my car 24x7 as a car pc so to speak.
And i'm wondering if anyone knows a way to add a usb webcam and record maybe a 1hr loop of video at 640x480+ res and say 15fps+ like a police dash cam in a way
Tablet is in a custom mount with dock so i have 2 usb ports.
Tablet is rooted and running team eos rom. It is a b70 sbv1.
I have made a few small apps to interface my tablet with my arduino over bluetooth. But thats about the best i can do
I have a small 7 tablet with a usb host bort and no cameras (tegra powered)
That i wish to use a usb cam with as well as a bike cam
As always the higher the rez the better
I have a tf201 as well

If it doesn't detect and use the usb webcam, then you're running in to the same problem I'm having with my usb headphone adapter, and will probably have to make a driver for it. If it's Plug and Play in a linux based operating system, you should be able to package the needed modules into a driver and add to a kernel. Get a terminal emulator and run lsusb with the cam unplugged, and then run lsusb again after plugging in. it should give something like this
--
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 <-- These were here already
Bus 001 Device 026: ID 05e3: 0610<-- These were here already
Bus 001 Device 028: ID 046d:0a17 <--- this is the new entry after plugging in/ (headphone adapter)
--
Then google the ID (046d:0a17, whatever yours says) linux module. You'll need kernel source from asus or other base kernel to work with.
--
also try dmesg immediately after plugging in and see if any errors pop up, if not then you need a driver.

[Q] Archos g9's USB host port stopped working

Hi guys,
My Archos 80 g9 stopped recognizing usb devices attached to the OTG usb host port.
For a brief time it was touch and go, and sometimes the 3g modem was recognized, but now the devices only get power when connected.
I tried various ICS ROMs and their kernels, and nothing worked, including formating and installing stock.
A diagnostic app said that the kernel and android API each "claims support",and classes were found, but no device is detected.
When I type in the terminal emulator "lsusb" I get 2 buses, and the output doesn't change when a device is connected:
Bus 001 Device 001: ID 1d6d:0002
Bus 002 Device 001: ID 1d6d:0002
Is there any other command that can give some useful information? Is there anything I should be looking for in the "dmesg" output..? I'm not that great with linux..
I found a few threads about this from other sites which are few years old, but none was solved.
This is really important to me, because I can't use my 3g modem or keyboard/mouse/storage devices.
Thanks!

BUMP!

How to enable usb, it's disabled in my college PCs???

Micromax A87

That's a quick way of getting in trouble.
Sent from my LG-P999 using xda premium

Not sure if it is supposed to be disabled on purpose or not.
Assuming you're a local admin and it's a windows machine, you can enable the USB-controller device by going in the control pannel -> devive manager. Locate the USB controller and if disable, right-click on it, enable.
That's also a good way of "reseting" your device if you encounter errors with it.

Yeah, its windows xp sp3... and required hrdwares are also present in the machine.. but it doesn't show any "usb controller" in device manager list(supposed to be there in last)...I installed the chipset drivers in that pc...successfully... but then too not showing the PD.

There are a handful of ways to disable usb in a computer. Easy way would be to unplug it directly from the inside of a PC. It's also possible to disable it through the pc's bios. And it can also be disabled by disabling the driver like the one mentioned above. Also it could be disabled through registry and group policy if on windows machine. There are alot more ways to do it that I didn't mention.

Thanks Riyal, i'll be trying that through bios and..i'll chck if hardwre is unpuged...
Tell u nxt day..

I would first update the usb drivers. I dont know if its your computer or one in a lab or whatever but if its running XP. Its a good chance the drivers havent been updated in awhile. When you say disabled, do you mean when you plug in a usb stick nothing happens or do you see in device manager that its disabled. Also it would only be relative to the motherboard controller if your using a front access usb port, as a back usb port is built in, have you tried other ports? Lastly there is always the bios, bios is probably hasnt been updated in awhile if this is not your computer, but make sure any usb controllers and or legacy usb devices are enabled.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Moved thread to [email protected]

Nizda1 said:
I would first update the usb drivers. I dont know if its your computer or one in a lab or whatever but if its running XP. Its a good chance the drivers havent been updated in awhile. When you say disabled, do you mean when you plug in a usb stick nothing happens or do you see in device manager that its disabled. Also it would only be relative to the motherboard controller if your using a front access usb port, as a back usb port is built in, have you tried other ports? Lastly there is always the bios, bios is probably hasnt been updated in awhile if this is not your computer, but make sure any usb controllers and or legacy usb devices are enabled.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Yes, the correct answer and very helpful ...

Can USB host custom devices?

I am having problems using my phone as a USB host when connecting a Digispark:
My phone simply never detects the Digispark (anyone with a Digispark can test this
with the ArduinoDroid app, or with direct SDK programming). Digispark uses a
custom USB driver, not a catalog HID driver (for the record, USB HID keyboards do
work fine on my phone).
I'm told that the Digispark connects fine on other (non-EMUI non-Huawei) phones.
Can anyone confirm this, or better yet explain the problem? I suspect EMUI might
not open custom USB devices up for developer access...
Thanks for your help! I've been trying to debug this for weeks...and just giving up

bobuhito said:
I am having problems using my phone as a USB host when connecting a Digispark:
My phone simply never detects the Digispark (anyone with a Digispark can test this
with the ArduinoDroid app, or with direct SDK programming). Digispark uses a
custom USB driver, not a catalog HID driver (for the record, USB HID keyboards do
work fine on my phone).
I'm told that the Digispark connects fine on other (non-EMUI non-Huawei) phones.
Can anyone confirm this, or better yet explain the problem? I suspect EMUI might
not open custom USB devices up for developer access...
Thanks for your help! I've been trying to debug this for weeks...and just giving up
Click to expand...
Click to collapse
Can't say for your device but I've used a usb to rs485 adaptor without issue.
I'm guessing running lsusb picks up your device?
Sent from my HUAWEI ALP-L29 using XDA Labs

Did your adapter use an HID protocol?
And, how would I run lsusb? I mean I could try to do something like "adb shell lsusb"
from the computer while the phone is both a slave to the computer and a host...I
wonder if maybe you are mistakenly thinking I'm having a problem connecting my
phone to a computer, but that is fine (Digispark to computer also works fine, the
problem is Digispark to phone).

bobuhito said:
Did your adapter use an HID protocol?
And, how would I run lsusb? I mean I could try to do something like "adb shell lsusb"
from the computer while the phone is both a slave to the computer and a host...I
wonder if maybe you are mistakenly thinking I'm having a problem connecting my
phone to a computer, but that is fine (Digispark to computer also works fine, the
problem is Digispark to phone).
Click to expand...
Click to collapse
Wireless ADB? I was mistakenly thinking of running lsusb from terminal in phone but that gives permission denied. Must be to many years of rooted devices.
Do you get any kind of response from the phone when connected? Even a minimum of "reverse charging" mode?
Sent from my HUAWEI ALP-L29 using XDA Labs

I do get the Reverse Charging response, but that occurs from the USB Type C OTG adapter alone (because all adapters have 5k ohm resistor pulldown on CC pin), so it does not change anything when the Digispark gets connected through the adapter. I'm hoping someone else in these
forums might have a Digispark and Mate 30 to confirm my problem...