You could do a nandroid backup.
Or backup your boot image like this: cat /dev/mtd/mtd2ro > /sdcard/boot.img.backup
And then to reflash the boot.img in recovery: cat /sdcard/boot.img.backup > /dev/mtd/mtd2
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USB Host mode for Desire
- Thread starter gr0gmint
- Start date
You could do a nandroid backup.
Or backup your boot image like this: cat /dev/mtd/mtd2ro > /sdcard/boot.img.backup
And then to reflash the boot.img in recovery: cat /sdcard/boot.img.backup > /dev/mtd/mtd2
what's going to happen if i leave it at host ???? as i see it i won't be able to mount my phone as sdcard isn't it ???? is there any other drawback ???
i found my kernel as an update.zip from modaco....will i return to my configuration if i apply my kernel afterwards or i are there any other files altered by your patch ????
I'm just wondering... is it possible to add this to a boot script and make the phone execute the commands at boot time?
Not the best of ideas because when you load these modules you'll loose the normal functions of the micro-USB port like removable storage/interetshare etc.
Use them when needed, unload when not needed.
It should be simple for one with experience in android coding to write widget/script so that you can toggle host USB on and off. Give it a few days at most and someone will sort it.
I'm a linux user, but never had a android, so I'm in the process of reading through all that I need to know before getting my hands dirty.
i am getting the cable this week so i am gonna try this.....do we have any progress here ??? like autoswitching between the two modes or a new update ???
ebay...the link from the original thread about usb host
http://cgi.ebay.com/Micro-USB-Host-...ewItem&pt=PDA_Accessories&hash=item3a5b899cc5
http://cgi.ebay.com/Micro-USB-Host-...ewItem&pt=PDA_Accessories&hash=item3a5b899cc5
hey, i received the cable today....
firstly: i have a screen problem with the kernel..whenever i touch the screen many white lines appear randomly
i loaded the 3 modules i want (the two you say and usb-storage one) and then i try to mount the usb i attached to the cable with the command
mount -t vfat /dev/block/sda1 /mnt/sdcard/usb-storage
as it is described in sven's tutorial here: http://sven.killig.de/android/N1/2.2/usb_host/
but i get mounting failed because there is no such file or directory...
some notes::::
- i am using MCR3.1
- i attached the usb directly onto the cable...not a powered hub
firstly: i have a screen problem with the kernel..whenever i touch the screen many white lines appear randomly
i loaded the 3 modules i want (the two you say and usb-storage one) and then i try to mount the usb i attached to the cable with the command
mount -t vfat /dev/block/sda1 /mnt/sdcard/usb-storage
as it is described in sven's tutorial here: http://sven.killig.de/android/N1/2.2/usb_host/
but i get mounting failed because there is no such file or directory...
some notes::::
- i am using MCR3.1
- i attached the usb directly onto the cable...not a powered hub
Modaco R20 didn't boot for me with this kernel. This project is awesome, hopefully it'll get swooped up into Cyanogen and have a settings option to switch back and forth.
I have a 2008 Pontiac G8 and people have been putting a USB touch screen overlay over the factory display, that has NTSC composite inputs. I'm planning the ultimate car/phone integration
After of course flashing the GM LAN bus so the screen will stay on over 2MPH.
I have a 2008 Pontiac G8 and people have been putting a USB touch screen overlay over the factory display, that has NTSC composite inputs. I'm planning the ultimate car/phone integration
After of course flashing the GM LAN bus so the screen will stay on over 2MPH. ok today i received my powered usb hub and i tried again. followed the same steps but no result.....
mobules are inserted just fine but when i try to mount the usb storage it says 'file or directory not found'.
i dunno if it's 2.1's fault but i will flash a 2.2 rom tomorrow and test it again...
did anyone had success with 2.1 ????
in addition why is there a screen line flickering with this kernel ???
You certainly have to make sure the directory /mnt/sdcard/usb-storage does exist. If it does, what does dmesg tell you?
what do you mean that usb-storage must exist.....isn't created by itself when we mount it ?????? and what is dmesg ???
in addition i listed the contents of the dev/block directoey and there is no sda1
in addition i listed the contents of the dev/block directoey and there is no sda1
No.
Code:
mkdir /mnt/sdcard/usb-storageA command to print the syslog.
Is there a sda?
Any news on this? Is there now a way to get host support without reflashing the kernel every time you need it?
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6Hi,
I've applied Sven Killig's patches to a 2.6.32 kernel similiar to DeFroST 0.9b with no-echo patches.
Kernel update attached. I didn't do anything, please thank Sven Killig for his awesome work.
r2: Some often used USB modules included. (USB storage built-in)
r3: Modules are loading now
r4: Fix for error -14 included
THERE IS NO GUARANTEE THIS WILL WORK
GUIDE, IF YOU WANNA TRY IT OUT:
1. Flash kernel
2. Go into Terminal emulator and write the following:
insmod /system/lib/modules/usbcore.ko
insmod /system/lib/modules/ehci-hcd.ko
3. Load any other modules you want, ie. usb-storage.ko
To "un host", just flash the kernel from DeFRoST 0.9b1Oh, I just realized, if you do the
git clone git://github.com/teamdesire/cm-kernel.git
you probably won't get the 2.6.35.7 Kernel version anymore... either check out that version explicitly or just replace "2.6.35.7" by the version number you have anywhere it pops up...
Sven Killing's patch probably still works... not sure though1Hey guys,
sorry I didn't answer for a while, I guess the notification E-Mail must have been filtered out by my spam filter and I didn't check for a while... Here's what I did to get FTDI running:
1. Get the 2.6.35.7 Kernel source from
git clone git://github.com/teamdesire/cm-kernel.git
cd cm-kernel
2. Apply the Hostmode Patch:
http://sven.killig.de/android/N1/2.2/usb_host/android-kernel_msm-bca5320_Nexus-One_usb-host.patch
3. Activate Hostmode in the config. Either manually with
make cyanogen_bravo_defconfig
to get the standard config and then
make menuconfig
to customize
or you can take my .config file (see attachment)
4. compile:
make
5. Take a Kernelimage, (I took cm_default.zip from the third post of the seventh page of this thread, http://xdaforums.com/attachment.php?attachmentid=421496&d=1287359589) and unzip it.
6. Replace the kernel/zImage from the zip file with the zImage which you find in:
cm-kernel/arch/arm/boot
7. Copy new kernel modules into the folder to zip:
- cd to system/lib/modules
- create a folder: 2.6.35.7-cyanogenmod
- create subfolder: kernel
- copy all needed kernel modules which you find in your kernel source for example under "drivers/usb/" into the new folders, but keep the folder structure intact.
- Files you need for Hostmode:
drivers/usb/core/usbcore.ko
drivers/usb/host/ehci-hcd.ko
drivers/usb/serial/usbserial.ko
drivers/usb/serial/ftdi_sio.ko
I also copied all other modules which were included with the "cm_default.zip" into it's corresponding folders, though I'm not sure if they are needed.
8. Zip the folder
zip -r <YOUR_ZIPNAME.zip> kernel META-INF system
9. Copy onto your device's sdcard
10. Start in Recovery
11. Apply zip from sdcard
-> Select your ZIP file
12. Reboot
13. Now you need a terminal connection. Unfortunately that does not work any longer via USB, because it's now running only hostmode. There is a solution using "adbWireless" just install that from the marked and you can connect to your phone via WLAN using:
adb connect <PHONE'S IP>:5555
adb shell
14. In a shell enter the following:
su
cd /system/lib/modules/2.6.35.7-cyanogenmod/kernel/drivers
/system/bin/insmod usb/core/*
/system/bin/insmod usb/host/*
/system/bin/insmod usb/serial/usb*
/system/bin/insmod usb/serial/ftdi*
you should write a shell script for this, b/c it's annoying to do this by hand every time
15. now the modules should be loaded.
I also attached my kernel-image file, so you don't need to compile.
I am currently working on writing a wrapper program for the FTDI device, since you need SU rights to control a ftdi device and there's no way to enable that for a Java app. I am using libftdi for this which works good so far.
I hope I was able to help you.
-Tim
Hey there Mastaxlokks! Ive been trying to use your instructions to modify a kernel, but could not understand how to apply sven killings patch. Could you please clarify that?
Thanks in advance1I haven tried to compile that kernel, but the old kernel patch does not work for 2.6.35.9, so I'm sure it won't work with your Kernel either.
I found some other patch which I had to modify slightly, but now works with my kernel. You could try if it also works for your kernel. You'll find it attached.
You will then need to download the kernel source:
mkdir -p ~/android/kernel
cd ~/android/kernel
git clone git://github.com/teamdesire/cm-kernel.git
cd cm-kernel
git checkout android-msm-2.6.37-unified
The rest should work like I explained in a previous post:
http://xdaforums.com/showpost.php?p=12083199&postcount=117
Just replace the kernel checkout with the above and take the attached patch instead of the old one...
You can manually configure your Kernel, or try my config file for my 2.6.35.9 kernel which I attached. (It is named .config_host after unzipping, so it'll probably be invisible)
Hope this works for you.
