How to make custom my android driver - Android General

Plase...

Any body help me
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choo85 said:
Any body help me
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Are you talking about custom device drivers, such as the ones that interface with the Camera, Graphics, Sound, etc.? What type of device driver are you looking to develop (What function is it for I.E accelerometer, gps, light sensor, etc.)? If your talking about custom device drivers I would recommend taking a look at this documentation on Android Low-Level System Architecture. Additionally because Android is based on the Linux Kernel this is a great book to understand Linux Driver development. Let me know if you still have any questions.

shimp208 said:
Are you talking about custom device drivers, such as the ones that interface with the Camera, Graphics, Sound, etc.? What type of device driver are you looking to develop (What function is it for I.E accelerometer, gps, light sensor, etc.)? If your talking about custom device drivers I would recommend taking a look at this documentation on Android Low-Level System Architecture. Additionally because Android is based on the Linux Kernel this is a great book to understand Linux Driver development. Let me know if you still have any questions.
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Thank you so much ...
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Related

Android on Bookeen-Cybook Odyssey (eBook Reader)?

Hello everyone, I know this is a long shot but: is anyone interested in porting Android to this excellent eBook Reader?
Device description is here: http://www.bookeen.com/en/cybook/odyssey
It is basically a Nook Touch Simple/Sony PRS T1 like device that features a very fast e-Ink display (amazingly fast for an e-Ink) and should support some tablet like use (browsing the web, reading a RSS feed) quite well. You can see here and here what HSIS (High Speed Ink System) can do.
Stock version is using a Linux 2.6.31 based OS (doesn't specify what flavor)
From the little I know the main problems with porting a Android whould be:
- possible locked bootloader on the Cybook Odyssey -> no way to know without the device
- supported chipset -> an ARM A8 based chipset is listed
- display drivers -> maybe those from regular pearl e-Ink can be used?
- wi-fi drivers -> again, depends on the chipset
I'm out of my league (php, web stuff) here but I plan to buy the device next month if there's hope for it
Ideas?
Hi!
I would point out, before getting your hopes up on the porting, the fact that you asked just one day after the launch of the device, makes one think that you're thoughts are audaciously early. So unless some xda-developers are Bokeen insiders and, ahem, unbound by their job to work on this matter, either waiting or is the thing to do. Or, ahem, , learning how to port?
The chances I see for this port to happen are small (but than again still possible). Perhaps we could see if the linux running it might offer more flexibility and run apps directly (?). Porting would would have it's obvious advantages ... an Android with it's screen technology superior to any current eInk readers, except the Mirasol powered ones perhaps (those are limited to Korea for now) would we awesome.
csioucs said:
Hi!
I would point out, before getting your hopes up on the porting, the fact that you asked just one day after the launch of the device, makes one think that you're thoughts are audaciously early. So unless some xda-developers are Bokeen insiders and, ahem, unbound by their job to work on this matter, either waiting or is the thing to do. Or, ahem, , learning how to port?
The chances I see for this port to happen are small (but than again still possible). Perhaps we could see if the linux running it might offer more flexibility and run apps directly (?). Porting would would have it's obvious advantages ... an Android with it's screen technology superior to any current eInk readers, except the Mirasol powered ones perhaps (those are limited to Korea for now) would we awesome.
Click to expand...
Click to collapse
Is there any news on debugging and or development possibilities on that platform? I have seen the gpl'ed linux source released at bookeen's site.
I have yet not found any pictures of a disassembled device and do not know if customized firmware updates are possible.
Would very much appreciate any news on that topic!
NonsenseInc said:
Is there any news on debugging and or development possibilities on that platform? I have seen the gpl'ed linux source released at bookeen's site.
I have yet not found any pictures of a disassembled device and do not know if customized firmware updates are possible.
Would very much appreciate any news on that topic!
Click to expand...
Click to collapse
I would also be interested in customized firmware for cybook odyssey. thanks
Any news on this anybody?
Anyone still watching this? I'd like to try to do it, but it's over my head, skill wise...
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thirstythirsty said:
Anyone still watching this? I'd like to try to do it, but it's over my head, skill wise...
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Click to collapse
I know that internally some version of android ran on the device, but it's really not worth to do this. Android is absolutely not suited for such device and screen.
To install personalised linux/software, first crack the update format, then the device will be open to you...

Why can't Android replace Desktop OSes?

Android x86 works fine on my notebook PC. And, I can do almost everything with it: Ranging from web surfing to programming.
But still, nobody cares about it. Why?
What's really the advantages of desktop OSes over Android? Why don't OEMs ship computers with Android as primary OS? Why don't people think Android when PC comes in mind?
I'll tell you why, Windows sells and people buy! Microsoft has the consumer market all tied up with the PC. Most consumers couldn't care less about programming, hacking, developing, etc... web surfing and Facebook and emailing? Yeah, that's what they want. Now, another question: why would people who purchase a PC want to pay additionally or inclusively to the price of a PC for Windows OS, when most distros of Linux are absolutely free? I'm running an Ubuntu 12.04 LTS/Win7 setup on my laptop. I'm getting closer and closer each day to wiping Win7 completely off, but have some reservations in doing so. Anyhow, my two cents worth...
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Windows comes first for game developers. That is why I dual boot. if Linux got love from from game devs it would have a better chance at success. The other issue would be driver compatibility, although this has gotten a lot better.
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muddflap said:
Windows comes first for game developers. That is why I dual boot. if Linux got love from from game devs it would have a better chance at success.
Click to expand...
Click to collapse
I am talking about Android, not normal Linux. I think, Android does have nice games..
Well, when the time comes for a full fledged OS, Android is still lacking in apps for that. One step in the right direction will be to multiply the current variety of tablet apps.
Make more apps have tablet optimisation and then we can talk about desktop apps.
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Well, once I can root any Android from an Android, Sign me up. Meanwhile I gotta bow to the all mighty glass structure.
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It wont happen for another 100 years.
I like my skateboard. But, I wouldn't go highway on it.
Same thing.
IceBean said:
I like my skateboard. But, I wouldn't go highway on it.
Same thing.
Click to expand...
Click to collapse
What most people do: Facebook, Email, Chat, Casual Gaming
Do you think, Android isn't suitable for that?
It's not the same thing!
SachinShekhar said:
What most people do: Facebook, Email, Chat, Casual Gaming
Do you think, Android isn't suitable for that?
It's not the same thing!
Click to expand...
Click to collapse
Your answer is also a point against android as a viable desktop, by that I mean a desktop should be able to do more than just "what most people do".
That and you can't just download and install hardware drivers for android so it renders a lot of peripherals only useable with pc mac or linux.
Android can be a desktop if you don't tax your pc with more demanding tasks such as audio or video editing. Once you want to do anything more specific than gaming or browsing android does not yet offer the ability to.
I think it is viable but because it is not designed to be anything more than a mobile operating system it would struggle to be a desktop replacement.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2
mistermentality said:
Your answer is also a point against android as a viable desktop, by that I mean a desktop should be able to do more than just "what most people do".
That and you can't just download and install hardware drivers for android so it renders a lot of peripherals only useable with pc mac or linux.
Android can be a desktop if you don't tax your pc with more demanding tasks such as audio or video editing. Once you want to do anything more specific than gaming or browsing android does not yet offer the ability to.
I think it is viable but because it is not designed to be anything more than a mobile operating system it would struggle to be a desktop replacement.
Click to expand...
Click to collapse
Initially, even Windows didn't have such high-end apps. After bringing Android to mainstream, those types of apps will appear on Android, for sure.
SachinShekhar said:
Initially, even Windows didn't have such high-end apps. After bringing Android to mainstream, those types of apps will appear on Android, for sure.
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Click to collapse
As soon as windows came out it was not long before the programs were available, android works differently to windows (for example in its use of user installable drivers) and is, unlike windows, not designed to be a desktop so the apps don't or perhaps cannot in some cases (such as adobe type video editing software) be made that will enable android to meet all pc desktop needs.
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
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The future android versions may change depending on the team's direction though.
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Markuzy said:
The future android versions may change depending on the team's direction though.
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Click to collapse
That's true, I think ics was more desktop friendly than say gingerbread and I would love an android desktop
Dave
( http://www.google.com/producer/editions/CAownKXmAQ/bigfatuniverse )
Sent from my LG P920 using Tapatalk 2
Markuzy said:
The future android versions may change depending on the team's direction though.
Click to expand...
Click to collapse
I agree..
Let me correct myself.
I actually don't think Android is as low performing as a skateboard.
At best, I think it's more like a scooter. It gets a job done if it's about taking you to point A to B. And, that's pretty much it at this point.
A car, on the other hand, can do many more things. It is far more versatile. It stands against the weather. It can carry all your family members. It is far more powerful...etc.
Remember old days of laptops? In those days, people with a laptop also had to have desktops although same OS was being used. It was because laptops weren't just powerful enough to suit higher end tasks. The situation is similar in that regard.
For you, Android and supporting hardware and apps might be good enough to replace desktop. However, it isn't so for majority of people and that's the point. A desktop OS needs ability to support all types of usage scenarios, not to mention hardware.
Can current Android do it? No.
Android isn't a desktop OS. Its built for touch and feels pretty limited when being controlled via mouse/kb. Ubuntu would be a better choice since its a decent well established desktop OS, especially when the Ubuntu on Android project is out allowing android apps to run on Ubuntu and vice versa. I'd love to see the popularity of Android help Ubuntu.
IceBean said:
Let me correct myself.
I actually don't think Android is as low performing as a skateboard.
At best, I think it's more like a scooter. It gets a job done if it's about taking you to point A to B. And, that's pretty much it at this point.
A car, on the other hand, can do many more things. It is far more versatile. It stands against the weather. It can carry all your family members. It is far more powerful...etc.
Remember old days of laptops? In those days, people with a laptop also had to have desktops although same OS was being used. It was because laptops weren't just powerful enough to suit higher end tasks. The situation is similar in that regard.
For you, Android and supporting hardware and apps might be good enough to replace desktop. However, it isn't so for majority of people and that's the point. A desktop OS needs ability to support all types of usage scenarios, not to mention hardware.
Can current Android do it? No.
Click to expand...
Click to collapse
I was talking about majority of people (not myself). That's why Google launched Chrome OS.
According to surveys, most of people do those things with Desktop PCs which is possible with Android devices.
Android is more powerful than Chrome OS. If Chrome OS can go to commercial Laptops, why can't Android?
spunker88 said:
Android isn't a desktop OS. Its built for touch and feels pretty limited when being controlled via mouse/kb. Ubuntu would be a better choice since its a decent well established desktop OS, especially when the Ubuntu on Android project is out allowing android apps to run on Ubuntu and vice versa. I'd love to see the popularity of Android help Ubuntu.
Click to expand...
Click to collapse
You do have point.
We can use mouse, but it feels pretty limited.
But, what if someone says, you'll become used to after using that continuously. You may not like dragging welcome screen of Windows 8 at this time, but you'll love it once its in your mainstream.
Its actually being worked by one Linux company .
Take off off an app based Linux,Android desktop will happen .
jje
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I don't like any OS ?! => Linux

Hi All,
Here's my grief:
- I don't like Android at all (it seems I'm the only one here ?!).
- the new Windows 8 scares me
- Apple ? no comment here
So, in short, I don't like those new fancy all integrated OS ... which leaves me with mostly nothing, except using a port of Linux.
=> so my question is now, since I'm thinking of buying a new phone:
which phone has the best Linux port at the moment ?
if possible: I'd like a latest gen phone with 4G/LTE and all the super fast CPU and super fast empty battery
Not sure if it all makes sense, but any help would be appreciated.
I'm not sure that there is one. I mean, getting all the drivers for the radio's and all that fun stuff would be a major pain. I know LiMo was being worked on and developed, but I have no idea how far they got.
Android is based on Linux
Why dont you buy a cheap old phone with good battery and a netbook with Linux?
There is no good and fast working Linux portation for any phone.
Sent from my brain using my fingers
Well, what don't you like about Android?
android is probably your best bet, your question really doest make any sense, everything is based of unix apart from windows, so really you should not have a computer or a phone based on your question
mox123 said:
android is probably your best bet, your question really doest make any sense, everything is based of unix apart from windows, so really you should not have a computer or a phone based on your question
Click to expand...
Click to collapse
Well, I know Android is based on Linux, but it's the end-result that I don't like ... and the fact that I have no choice ... yeah, that's stupid, but I don't want to be forced in using something that I don't like - that's why I'm looking for alternatives ( I had the HTC HD2 and there's some Ubuntu Port on there ... so I was hoping some newer device would have it too).
Thank you all for your answers - even though my question does not make much sense
Have a look at the Nokia N8. Very nice Hardware, cheap and no mainstream os.
`
firefox OS,the best mobile system based on linux
I'd just go for Android, it's not only functional but fun too and you can always extend your phones capabilities with new apps, there are endless possibilities out there.
You can compile and tailor a build of Android to anything you want. Its Linux with java heavily integrated into the framework. Your asking pretty much for the impossible.
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[Q] Why Windows Os can run on allmost all Pcs and why Android roms can not?

Noob question, i dont understand why Windows os can run on allmost all computers and why Android roms does not ?
Because windows is a computer OS and Android is a mobile Os
Sent from Arkham
I mean why Android roms for example Cynaogenmode 9 for Samsung cant go also on HTC if im not wrong, but windows can run on all computer.. i just dont understand why ??, I'm just started new flashing roms ecc. I was used to the pc that was so simple.
Tauros360 said:
I mean why Android roms for example Cynaogenmode 9 for Samsung cant go also on HTC if im not wrong, but windows can run on all computer.. i just dont understand why ??, I'm just started new flashing roms ecc. I was used to the pc that was so simple.
Click to expand...
Click to collapse
Because Windows os support x32 x64 and you can install drivers for your computer.
aleranol said:
Because Windows os support x32 x64 and you can install drivers for your computer.
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Click to collapse
I dinnt understand well, butt why they cant do this also on smarphones, for example on the computer you got the Bios and if somthing goes wrong with your OS you can always go to the bios ecc. But why they dont do the same on phones ?
Windows : An OS : Runs on PCs
Android : Also an OS : Runs on smart phones
Some basic common sense..
So this question is pointless
aleranol said:
Because Windows os support x32 x64 and you can install drivers for your computer.
Click to expand...
Click to collapse
DD-Ripper said:
Windows : An OS : Runs on PCs
Android : Also an OS : Runs on smart phones
Some basic common sense..
Click to expand...
Click to collapse
Im started new flashing roms ecc. i still dont have much experience, first i thought that the Clockworkmode ecc was a smartphone Bios but then on the internet i read about many people briking phones by flashing wrong roms ecc. when i firs was thinking that you could always recover from Cwm like on the computer Bios but it was'n like this. So i was thinking, why ? there isnt something like a bios on the android phones ? so you can always recover if something goes wrong ?
actually this is an excellent question......whats so hard abt having a mothwrboard that boots up in bios....nad then it allows u to install whatever system u want. after that u get to download drivers for ur hardware from some system driver pool....basically most phones have the closely the same hardware in our days especially when u can make use of sd cards as an external source like dvds nd cds.....the question is why r smartphones os's built in a different way and what stops them from being composed this way? isnt it more logical?
Tauros360 said:
Im started new flashing roms ecc. i still dont have much experience, first i thought that the Clockworkmode ecc was a smartphone Bios but then on the internet i read about many people briking phones by flashing wrong roms ecc. when i firs was thinking that you could always recover from Cwm like on the computer Bios but it was'n like this. So i was thinking, why ? there isnt something like a bios on the android phones ? so you can always recover if something goes wrong ?
Click to expand...
Click to collapse
Cwm=1/2bios. Windows is open for all part combination with drivers. But android or other mobile os are cant support different drivers. Companies select os and other parts and develop correct drivers for parts and os. Mobile devices have special drivers. But pcs are have open for all drivers.
This text hard for me because i m turk.
This is a fantastic question! Essentially what has happened over the years is chip makers have designed their hardware around the windows os, and they have been able to do so because the windows os is a boxed software that, for the most part, cannot be changed. The Android os on the other hand is open sourced and can be tweaked 10 ways to Sunday, which is why most of us prefer it over ios or win mobile. The downside (kind of) is that the phones and tablets are specifically designed around the os and the os around the device. So in order to upgrade the os either the manufacturer (Samsung, Motorola etc) has to develop one or one of the brilliant coders out there has to work on developing one from the source code when it is released by Google. Hope this helps.
Sent from my A500 using CM10 JB unofficial
Great question, Many answers definitely.
Android OS are built around the phones, around specific devices.
For example:
GS3 and Note 2 are built on somewhat the same,
so odds are specific roms are ported to GS3 ( Serenity 1.2)
but GS3 and HTC One X are two totally different companies with two different builds of components so you'd not have a port from a Note 2 to One X.
It's logic once you look into the components of a phone and how they're built VS how computers are built and such.
GPU, CPU, Storage, etc on a PC are all parted,where-as on a phone they're soldiered onto one main board.
garbour said:
This is a fantastic question! Essentially what has happened over the years is chip makers have designed their hardware around the windows os, and they have been able to do so because the windows os is a boxed software that, for the most part, cannot be changed. The Android os on the other hand is open sourced and can be tweaked 10 ways to Sunday, which is why most of us prefer it over ios or win mobile. The downside (kind of) is that the phones and tablets are specifically designed around the os and the os around the device. So in order to upgrade the os either the manufacturer (Samsung, Motorola etc) has to develop one or one of the brilliant coders out there has to work on developing one from the source code when it is released by Google. Hope this helps.
Sent from my A500 using CM10 JB unofficial
Click to expand...
Click to collapse
Now i understand, thanks i was thinking it would be possible to build phones with a Bios and basic drivers preinstalled in the motherboard, just to run android, and then from there find the driver updates ecc for its own device. That would be much easier for all of us to flash roms, kernels ecc without the risk of briking divices, and also now a days the smartphones are almost like real computers ecc. I think if you got an HTC + 1.7 Ghz x 4 you wouldn't like stop receiving updates for your stock or custom rom because its still a good piece of hardware, and also even if i would got to pay 20 $ for an Android upgrade i wouldn't mind, i think an something thing like a bios in a phone will give a piece of mind for everyone, and it would be much easier.
Sent from my HTC One X using xda app-developers app
caha2639 said:
Great question, Many answers definitely.
Android OS are built around the phones, around specific devices.
For example:
GS3 and Note 2 are built on somewhat the same,
so odds are specific roms are ported to GS3 ( Serenity 1.2)
but GS3 and HTC One X are two totally different companies with two different builds of components so you'd not have a port from a Note 2 to One X.
It's logic once you look into the components of a phone and how they're built VS how computers are built and such.
GPU, CPU, Storage, etc on a PC are all parted,where-as on a phone they're soldiered onto one main board.
Click to expand...
Click to collapse
But for example if HTC,Samsung and all manufacturers . install on there mother board a bios + basic drivers for input output ecc. and to separate Android from it. So you could then have a one Android for all. And devs could focus mainly to the functionality and less to the compatibility. It would be fantastic :thumbup:
Sent from my HTC One X using xda app-developers app
As simple answer: Most android devices use a lot of closed source/specification hardware.
Plus locked/partially locked bootloader
In windows (and linux too) kernel there is a lot of closed blobs which work fine on pc because they were precompiled under x86 arch, but there's no use for them on our arm devices.
If we had open specifications and hardware device, we wouldn't have any trouble getting OS in there(that's what china manufacturer do)
As usual - the only issue is copyright.
Go OSS!
Sent from my Xperia Mini Pro using xda premium
Android and windows have more in common then anyone is letting on.
Wi ndows is closed source some other android is closed. Some of is is open.
Even though most of yours computers have windows dosnt mean that you can take the hard drive from one computer and expect for the Oscar to boot while in another computer. They all have drivers that are gding to be different.
Computers have biOs because of many different reasons. Computers are versatile smartphones are a relatively specialsized piece of equipment.
The question you ask has an answer but I think the same question can be asked aboout the differences between a couch and a chair. Someone just thought of a way to do somthing and it became the standard. Again computers freeway more advanced then smartphones. How many boot devices can you have on a smart phone? MAybe 2. Computers can have many hdds, many optical, many usb devices, many network boots...etc etc
Sent from my SPH-L710 using xda app-developers app
Tauros360 said:
Noob question, i dont understand why Windows os can run on allmost all computers and why Android roms does not ?
Click to expand...
Click to collapse
Windows has been around forever.
pixelshuck said:
As simple answer: Most android devices use a lot of closed source/specification hardware.
Plus locked/partially locked bootloader
In windows (and linux too) kernel there is a lot of closed blobs which work fine on pc because they were precompiled under x86 arch, but there's no use for them on our arm devices.
If we had open specifications and hardware device, we wouldn't have any trouble getting OS in there(that's what china manufacturer do)
As usual - the only issue is copyright.
Go OSS!
Sent from my Xperia Mini Pro using xda premium
Click to expand...
Click to collapse
So in chinese phones its possible to do this ? For example on my computer i have tried windows, ubuntu ecc all on the same hardware. so in chinese phone its possible to boot Android or Windows 8 mobile on the same hardware ? i dont understand now, its is possible but manufactures dont do it or its a tecnical problem. ?
Tauros360 said:
So in chinese phones its possible to do this ? For example on my computer i have tried windows, ubuntu ecc all on the same hardware. so in chinese phone its possible to boot Android or Windows 8 mobile on the same hardware ? i dont understand now, its is possible but manufactures dont do it or its a tecnical problem. ?
Click to expand...
Click to collapse
No it doesn't matter. It is alot of closed source stuff in windows. Not to mention MS would C&D anyone that may even try. Even the new windows 8 32 bit pc systems have a locked bootloader so you can't change the OS
Sent from Arkham
pixelshuck said:
As simple answer: Most android devices use a lot of closed source/specification hardware.
Plus locked/partially locked bootloader
In windows (and linux too) kernel there is a lot of closed blobs which work fine on pc because they were precompiled under x86 arch, but there's no use for them on our arm devices.
If we had open specifications and hardware device, we wouldn't have any trouble getting OS in there(that's what china manufacturer do)
As usual - the only issue is copyright.
Go OSS!
Sent from my Xperia Mini Pro using xda premium
Click to expand...
Click to collapse
potna said:
Android and windows have more in common then anyone is letting on.
Wi ndows is closed source some other android is closed. Some of is is open.
Even though most of yours computers have windows dosnt mean that you can take the hard drive from one computer and expect for the Oscar to boot while in another computer. They all have drivers that are gding to be different.
Computers have biOs because of many different reasons. Computers are versatile smartphones are a relatively specialsized piece of equipment.
The question you ask has an answer but I think the same question can be asked aboout the differences between a couch and a chair. Someone just thought of a way to do somthing and it became the standard. Again computers freeway more advanced then smartphones. How many boot devices can you have on a smart phone? MAybe 2. Computers can have many hdds, many optical, many usb devices, many network boots...etc etc
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
Im a little confused because i dont have any experience in how software and hardware runs together even i would like to learn it , all i know is that i cant put an AMD CPU on a Intel compatible motherboard, but an AMD and intel computers can run both on windows, Ubuntu, ecc. So now i understand that almost all Smartphones have diffrent hardware, but they can not all run on a one Android version, but Android needs to be customized to the hardware. Am i wright ? Do you think if manufactures produce there hardware to fit in a one Android version, and devs focus in a one Android version, and also roms could be compatible for all devices, if im not wrong. Because what i sow now is that many devs work more on compatibility, and if it was the other way they could realy focus on the functionality of Roms ecc. I'm still new in this world and i have a lot of things to learn, so im asking you guys, because you know more than me, so i could learn somthing from you.
Biggest problem of mobile devices is lack of good boot "catcher", as in BIOS, whom would allow custom kernel load.
Despite being binary compable(not always), the way android is being started differs.
The best we are getting is unlocked BL, but never open one.
Also, you have mentioned china devices.
On some chinese smartphones fully open bootloader is present, that's why it is possible to launch ubuntu and even windows(on atom tablets).
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[Q] How to install Android on a Device of my own

I am planning on building a device that would convert my old TV to an Android device.
I would prefer to use all the compatible hardware however I don't know what are the hardware that are compatible.
Also, I want a tutorial as to how to go about installing android from scratch.
alwindoss said:
I am planning on building a device that would convert my old TV to an Android device.
I would prefer to use all the compatible hardware however I don't know what are the hardware that are compatible.
Also, I want a tutorial as to how to go about installing android from scratch.
Click to expand...
Click to collapse
set your old TV just as a monitor.
And your Android device needs output like mini-HDMI... and so on.
With a mini-HDMI transfer to composite video connector, then you got it.
How would you get soo big touch screen and notification bar.. you would have yo litteraly wave you hand down omg
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