Palm to Android app port? - Android Software Development

I have a odb2 engine monitoring program that i ran on a palm IIIc. The pda crapped out on me the other day. Is anyone willing/able to port this over to work on my HTC Hero?
The program itself has always been free as long as I can recall. The product that you bought was a cable with some sort of module on it so this shouldn't be a warez problem. If it is my apologies.
This is the download link:
http://www.ls1m.com/demo/LS1M_v1.7e.zip
There's an .exe in the zip that you run from the desktop to install to the pda.
This is the website:
http://www.ls1m.com/
I don't even know if it is possible, it would be amazing if it was though. LMK
Thanks!

No one? Don't be scared to tell me it can't be done if that is the case. Is there a better place to ask?
Sent from my Hero running CyanogenMod Stable

I'm guessing that the hardware in the cable does most of the heavy lifting. It looks to be a CAN to RS232 cable so the app would just have to deal with serial communications. Unfortunately, I don't think most androids have any kind of serial connection.

That's how I think it works too. Yes it is a serial cable, i was just hoping to use a serial to usb adaptor, then usb to mini usb cable. I'm a dumb dumb, so I don't know what it would take for android to handle it.
This is just something that I envisioned, I have no idea if it is a practical task or not.
Thanks for the input.

gmoney41685 said:
That's how I think it works too. Yes it is a serial cable, i was just hoping to use a serial to usb adaptor, then usb to mini usb cable. I'm a dumb dumb, so I don't know what it would take for android to handle it.
This is just something that I envisioned, I have no idea if it is a practical task or not.
Thanks for the input.
Click to expand...
Click to collapse
As far as I know, the android USB is "device" only. To use it with a RS232 adapter, you'd need a USB "host" device.

I have the solution to your woes. Check out the app called Torque on the market. My favorite app on android period. It can do everything your palm app can 10X. It uses a bluetootb odb2 adapter. They're 26 bucks on ebay. I use the program on my S2000 for datalogging and its a godsend. Buy the paid version, the developer responds to requests and is constantly updating the program.
www.appbrain.com/app/torque/org.prowl.torque
Devs site is torque–bhp.Com
Sent from my SAMSUNG-SGH-I897 using XDA App

Related

USB Host Capabilites

I read that engadget was able to get USB hosting working on the universal, however it appears that this is not possible (reading the threads here). I just wanted to confirm that using a 'usb dongle' to connect other devices to the universal does not work - as I thought that wm5 did support this. Is it just a question of drivers or is the hardward not capable?
Just to remind that topic...
I'm really interested is it possible to connect a portable harddrive to my MDA Pro?
i dun think so its true. If anybody proves this to be true, then please let us know.
noname_nick: have you found the engadget article?
V
@Vijay555,
It was a Q&A article they posted when they had just received the Universal. Should be there in their archives i guess.
Cheers.
I just checked with an sd card reader and a 40gig usb hdd....it didn't detect either :-(
don't think the universal supports usb hosting :-(
hope its just a software handicap and not a hardware one!
San
universaldoc said:
@Vijay555,
It was a Q&A article they posted when they had just received the Universal. Should be there in their archives i guess.
Cheers.
Click to expand...
Click to collapse
yeah I even posted in that engadget article asking to reconfirm their findings and thry did reply saying it could be used as a usb host as they had it dine themseves (it was one of the factors that made me get the universal) alas the dumbfuc*ers removed the ABILITY for usb host or maybe engadget was Forced to say yes(as in LIED) under pressure from htc etc??
just my 2 cents !
If I'm not mistaken, the hardware in the Universal supports USB Host. But it is not implemented in the software running on the Universal... It's like having a sound-card in your computer, but with no drivers to use it. Maybe there will be a patch or update for WM5 which supports USB Host.
Suspect that you need a USB host cable to have any chance of testing USB host functionality, this cable tells the PDA that it now needs to work in host mode.
The Sharp Zaurus has a similar arrangement where a single USB port can work in host or slave mode, which is switched using the relevant cable, link to such a cable http://www.streamlinecpus.com/store/product.php?productid=100&cat=0&page=1&featured
Suggest you search Zaurus forum (www.oesf.org) for more information.
Mike
does anyone has this cable and test it already?
It seems it will fit the mini USB port for the Universal?
Don't think it's native on the Universal - if it was, it ain't now. In the meantime, Softick Card Export II PC version 2.10 works great as USB Host services to the Storage Card!
Yes, I use the same thing on my Uni. I like it very much as i do not need a SD card reader anymore. But I still dream to be able to hook up my external slim HDD to my Uni.
Yes, I use the same thing on my Uni. I like it very much as i do not need a SD card reader anymore. But I still dream to be able to hook up my external slim HDD to my Uni.
vijay555 said:
noname_nick: have you found the engadget article?
V
Click to expand...
Click to collapse
Here is the article http://www.engadget.com/2005/09/02/...l-questions-weve-got-htc-universal/1#comments
I found driver for Toshiba E740 USB mass storage driver ( for PPC 2002) but maybe is a best way to find solution for Universal - it's look that only soft for this funcionality is missing :?: Deje PocketPC Page
usb host.....
USB standard provide 5 volt DC.
All HTC device have got 3,7v DC battery!! so it is not possible to power any kind of USB device!!.
The only way consist in voltage duplicator that should provide 5v using 3,7 v source, i think that HTC device has not this voltage regulator.
wishes
Antonio
fraant said:
USB standard provide 5 volt DC.
All HTC device have got 3,7v DC battery!! so it is not possible to power any kind of USB device!!.
The only way consist in voltage duplicator that should provide 5v using 3,7 v source, i think that HTC device has not this voltage regulator.
wishes
Antonio
Click to expand...
Click to collapse
the universal have the hw to have usb host functions but htc don't have put it to the out side world.
The mini-usb can't be used as initiator.
in thoery you could open the universal and hook another miniusb connector on the usb bus.... and then the drivers nightmare
Deje have drivers for mass-storage on ppc2003/ppc2 and they work fine.
I use both on casio-e200 and on the toshibare800.
btw:neither casio nor toshiba have 5v bateries and they work with external usb devices like keyboards mices etc, for disks i have to use external power...
bye

USB Host disconnected pin?

hello,
i've heard that the universal WOULD support USB host drivers if an unconnected pin inside the universal was connected... could anyone tell me;
- if i manage to get the pin connected, would i get usb host features like on any other usb host phone with proper drivers?
- how hard is it to do?
- WHAT to do?
Oh man,really really nice interesting idea,hope it's true and possible,i hope someone knows all about that and soon writes here how that is possible maaan,would be really awesome to play with that
PalDragan said:
Oh man,really really nice interesting idea,hope it's true and possible,i hope someone knows all about that and soon writes here how that is possible maaan,would be really awesome to play with that
Click to expand...
Click to collapse
nice to hear someone else would like to get it to work too
EDIT: just found this on another thread on another forum about a PXA270 phone, someone was trying to get it to work, seems like all we need is
- switch the pin to host mode
- a driver (maybe zenos latest ones?)
After about 6 months of not touching this project, I decided to take another quickie look at the PXA270 docs and programmers reference. What I now see is very interesting.
Originally, I was looking at bringing out the USB Host 1 interface pins to the outside world as they were only terminated internally on the motherboard. Only about 1% of users might be able to do that.
I then started to look at the USB OTG (On The Go) interface that this chip supports. The USB OTG interface can be used as both a client and host. It shares the same pins as the Axim's serial port. Unfortuately, there are two serial control lines pins that are not brought out to the connector, so I scrubbed that idea.
This past weekend I picked up the programmer's design reference book to look at how the various USB interfaces are programmed and I saw something that I missed before as this was in the USB Client section. It appears (to me anyways) that the USB Client pins can also be programmed to act as a USB Host when in the USB OTG low power operation mode. The manual discusses how the additional control registers are used along with an output mux and charge-pump circuit (to provide the +5v). Refer to the PXA27x Processor Family Developer's Manual - dated Jan 2006, sections 12.5.2 and 20.
I will be looking at this more closely to see if a simple driver can be written (Afarre, where are you...) to switch the USB client pins into Host mode. In addition to this, the USB device drivers would be needed. Please remember, an additional IO interface circuit will be needed to connect between any USB device and the Axim as the proper voltages are not on the sync connector.
Click to expand...
Click to collapse
the_fish said:
nice to hear someone else would like to get it to work too
Click to expand...
Click to collapse
Suuuuuuuuuure,every crazy idea to abuse my PPC and i'm in for the quest
PalDragan said:
Suuuuuuuuuure,every crazy idea to abuse my PPC and i'm in for the quest
Click to expand...
Click to collapse
haha same, btw thats the link to the topic:
http://www.mobilitysite.com/boards/x50-x51-forums/140071-hacking-pxa270-internal-usb-host-24.html
Unfortunately, this means it's not for 99% of users as it requires a delicate hardware mod/addition to the motherboard (see my earlier posts & photos in this thread).
Click to expand...
Click to collapse
seems like they were still working on the driver (which we already have(?)) so we only need the hardware mod.... i guess...
the_fish said:
haha same, btw thats the link to the topic:
http://www.mobilitysite.com/boards/x50-x51-forums/140071-hacking-pxa270-internal-usb-host-24.html
seems like they were still working on the driver (which we already have(?)) so we only need the hardware mod.... i guess...
Click to expand...
Click to collapse
Ummm it's definately a crazy idea. We were discussing with mamaich (our guru) last year. Unfortunately it's not that simple to provide the power in sync connector, which is acting as a usb client (connector) at the moment.
tomal said:
Ummm it's definately a crazy idea. We were discussing with mamaich (our guru) last year. Unfortunately it's not that simple to provide the power in sync connector, which is acting as a usb client (connector) at the moment.
Click to expand...
Click to collapse
did you read in the thread i posted a link to? they had the same problem, but also found out that it maybe is possible to provide the nessecary +5v too, they were not sure tho, and i thought maybe zenos drivers contain the code to do that.
the_fish said:
did you read in the thread i posted a link to? they had the same problem, but also found out that it maybe is possible to provide the nessecary +5v too, they were not sure tho, and i thought maybe zenos drivers contain the code to do that.
Click to expand...
Click to collapse
Ok, seems there is a new idea of power injection from outside.
Anybody tried it...?
Couple of months ago, I was trying with outside +5v power but nothing happens
Win_XP said:
Couple of months ago, I was trying with outside +5v power but nothing happens
Click to expand...
Click to collapse
did you use one of those special USB cables that have two female USB-A, one for power and the other for the device to plug in?
http://htc-tytn-ii.handster.com/software.php?id=3339&for=HTC+TyTN+II
i don't know anything about this.. i'm actually looking to hook up something that normally has a rs-232 port.. but is also made in usb.. It draws power from another source
with something like that program doesn't that suggest usb host is possible..
http://gnalpgnarf.handster.com/software.php?id=3339&for=gnalpgnarf
hmmm....am I right or am I wrong?
Theoretically speaking the idea with a pin is supposed to redirect power from intake to output, however, not only Uni is incapable of supporting the output (you are essentially attempting to piggyback another device), the external support will not be possible due to pin configuration, regardless of the cable used.
Another thing, other than sheer experimentation, what would be the real point of such USB host?
STOP TORTURING YOUR UNIs, GUYS!!!!
I am pretty sure, that the Universal doesn't support USB Host.
It did not, it does not, it will not.
Sorry guys!
To be honest:
Yes, the PXA270 chip supports USB Host, but in most HTC devices they use this feature already for something else, like: WLAN or 3G connection.
DOMy
seen this?:
http://hhtinker.blogspot.com/2008/10/usb-host-on-treo-650.html
do you know what USB Host already busy?
it used as data call transfer radio <-> CE.
USB hub will not solve this problem easy.
also if you want attach it to miniUSB connector, you need additional OTG chip.
=> Host on universal is very hard to do, ...impossible.

USB Host

Does anyone know of a usb host driver that enables usb host on the X1? Another user reported that the Zeno usb host drivers did not work. Any one tried others with success?
it has been discussed here somewere, and the last thing was all agreed it doesn't have a USB Host!
i hope it's not true, only time will let us know!
Uh... Well... I understand what you are asking for, but I don't know what you want to do with it... What would be the need for a USB host function on a mobile phone
Trudi said:
Uh... Well... I understand what you are asking for, but I don't know what you want to do with it... What would be the need for a USB host function on a mobile phone
Click to expand...
Click to collapse
Let's say you have some files on a thumb drive and wanna work on them (.doc , .xls...etc) but you don't have a laptop with you.
Or..Some images on an external HDD you wanna send via email, but no laptop with you...
Or..Show off to your iSheep friends that you can connect usb mouse and keyboard to use on your x1..
Get images off of your digi cam....etc etc
How about pluging in a usb joypad for gaming??
Endless possibilities.
I've recently seen some universal WinMo USB host drivers but the problem with X1 supposedly is that it doesn't power the USB port itself so you might need to power it externally. Dunno if it would really work though.
But you still need a pen drive or ext. hd with mini USB right?
Carty said:
But you still need a pen drive or ext. hd with mini USB right?
Click to expand...
Click to collapse
This http://www.amazon.com/Female-Mini-Male-Adapter-Shipping/dp/B000Y6UL5E
http://tero.mononen.eu/index.cgi/Blog/N800_and_photograhy-2008-07-27-19-01.cgi
Does the amazon actually work on the X1?
Peeps, i have been thinking about this problem for awhile now. Check this thread, there is a link to a site with drivers that should work,
http://forum.xda-developers.com/showthread.php?t=480279
BUT
BUT
BUT
Xperia doesn't have a powered usb. So, the only two ways to get something working are to either connect something with its own power supply, or to use a usb injector. Sadly the first option defeats the whole point of connecting a flash or a mouse and the latter one, well, i haven't had any luck with a suitable injector for the x1.
Good luck.
Concentrate said:
Does the amazon actually work on the X1?
Click to expand...
Click to collapse
NO, not unless we have a driver for USB host for X1
And as above posts stats, power to the USB.

Has it been designed to use the USB port for input?

Hey since I am not a dev, I do not know if the USB port could accept incoming connections. Since linux is here now on it, I would think there may be a way to tap into the USB port and rig up some sorta USB input device to use on the G1. Imagine a controller. =D Just wondering if its been reported if the G1 could have the ability or if hardware wise its totally blocked off. Thanks. =)
well the wired headset has a microphone on it for calls, so at the very least you could plug in a USB microphone
i'm no hardware dev though, so i could be wrong!
Mysticales said:
Hey since I am not a dev, I do not know if the USB port could accept incoming connections. Since linux is here now on it, I would think there may be a way to tap into the USB port and rig up some sorta USB input device to use on the G1. Imagine a controller. =D Just wondering if its been reported if the G1 could have the ability or if hardware wise its totally blocked off. Thanks. =)
Click to expand...
Click to collapse
Search the forum for "usb host" and "usb otg". Short answer is G1 cannot act as a usb host even though the cpu supports it. Reason is it is not wired to supply power to a usb slave device.
jashsu said:
Search the forum for "usb host" and "usb otg". Short answer is G1 cannot act as a usb host even though the cpu supports it. Reason is it is not wired to supply power to a usb slave device.
Click to expand...
Click to collapse
Well.. if its just power, there are those USB hubs that you have to plug in AC power, I would think that would solve that issue there.
jashsu said:
Search the forum for "usb host" and "usb otg". Short answer is G1 cannot act as a usb host even though the cpu supports it. Reason is it is not wired to supply power to a usb slave device.
Click to expand...
Click to collapse
well, theoretically, could a non-phantom powered microphone work then? if you got a decent small mic, you'd be able to record live music and such on the phone with pretty good quality. might be impractical but it would be interesting to see if it could work!
Isn't the microphone plugged to a non-usb pin on the HTC connector, like the headphones ?
Edit :
Yes, it is.. See diagram here : http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
Not sure how the headphones are plugged in, but I would assume if someone has a miniusb device, Im sure debian would detect it in the reports. I cant rem the command I used in ubuntu to get info but would be interesting to see if something can be done.
It dawned on me... Anetshare turns the G1 into a Wifi peer to peer. So along with Bluetooth abilities. Which Who said that the Bluetooth couldnt be used to accept BT Keyboard/Mice or so? Same with Wifi, Using Wifi to maybe have a app on your PC use ITS controller, sending the data via Wifi (So the G1 is a server) and translating those into usable input commands? I mean I know I use that Joy2Key program in WinXP to map my joystick to keyboard/mice commands. Im sure something could work on the G1. Thoughts?
you mean like this?
ubernicholi said:
you mean like this?
Click to expand...
Click to collapse
Well id say thats a start. Seems like nothing new has been up with it tho? Cause even if a BT Keyboard worked.. That would be a step in the right direction, hell could even play games a lil easier too.

[GUIDE] USB Gaming on Nexus S

Greetings,
The purpose of this post/thread is to describe how to use a USB gaming controller on the Nexus S, which is now possible thanks to the work of fellow XDA member sztupy. Before proceeding, I highly recommend that you read his Galaxy S thread, especially the first few posts (http://forum.xda-developers.com/showthread.php?t=1450298).
First, some demonstrations:
Using USB Host Controller app and Super Mario 64
Batman: Arkham City
Metro 2033
Dirt 3
DISCLAIMER: I take no responsibility for any damage you do to your phone.
1.) FLASH KERNEL AND DOWNLOAD APP
First things first, you will need ICS and to flash a kernel that has USB OTG support in it. At the time of this posting, some kernels with USB OTG are:
-steve.garon’s kernel (http://forum.xda-developers.com/showthread.php?t=1427352)
-mathkid95’s Matr1x kernel (http://forum.xda-developers.com/showthread.php?t=1361477)
-Ezekeel's GLaDoS kernel (http://forum.xda-developers.com/showthread.php?t=1336529)
If you do not know how to flash a kernel, please Google it. You will also need to download sztupy’s app “USB Host Controller” (https://market.android.com/details?id=hu.sztupy.android.usbhostcontroller).
2.) ACQUIRE USB CONTROLLER
Next, you will need a supported USB controller. The following should work:
-wired Xbox 360 controller
-Logitech DualAction controller
-Logitech WingMan RumblePad
-wireless Xbox 360 controller WITH wireless receiver
-wired Sony Playstation 3 controller (not yet tested)
...probably many others
3.) OTG SET UP
Thirdly, you’ll need a working USB OTG set up. Sztupy’s thread shows you a few ways of accomplishing this. Below is a (crappy) diagram of MY current working set up.
http://dl.dropbox.com/u/15806590/diagram2.png
I think this is the best set up because you don't have to buy any fancy OTG cables or USB hubs. But that's just my opinion.
In terms of the order for connecting things, I find it works best if you connect the phone LAST.
4.) FINAL STEPS
Once everything is connected, open up the “USB Host Controller” app, select the “Settings” pane, and set the Operation Mode to “Auto-host” (if you are using a set up that involves an OTG connector/cable, then you'll likely need to select OTG mode instead). If everything went right, the app will close automatically and you should be able to navigate your phone with the controller. You are now ready to game!
Just a note with the 360 controller. The middle button will always flash on and off, and will not stay lit on one quarter of the circle as on an actual Xbox. AFAIK there's no way to fix this (unless you use tape heh).
Games/Apps TESTED & WORKING: (This list is not meant to be comprehensive, and will be occasionally updated)
Note: Pretty much any app/game that supports button remapping (such as emulators) should work
Emulators
-nes.emu
-SNES 9X EX
-N64oid (the right analog stick is not functional)
-Mame4droid
-FrodoC64USB
-Mupen64Plus AE
-FPse
Native/Regular Android Games
-Shadowgun
-Grand Theft Auto 3
-Samurai II: Vengeance
-Riptide GP
-Meganoid
-Reckless Getaway
-Cordy
-EVAC HD
-Radiant HD
-Muffin Knight
Some (not all) of the Xperia Play compatible games will work too. See here for a comprehensive list of Xperia Play titles: http://forum.xda-developers.com/showthread.php?t=1217060
Other
-OnLive (!!! This means you can play the majority of onlive games that are game pad compatible)
thanks man i was thinking of a way to do this.
This is amazing !
I tested the Logitech Dual Action controller yesterday, it works also fine.
Hi! May I use your first diagram in my post too?
Sure! Be my guest.
Cool! 10 chars
3 new gameplay videos added.
nice. any idea if this works with the controllers for the original Xbox? I have a modded Duke I use on the computer, just replaced the Xbox!usb male with a regular usb male, and would love to be able to use it on my Cappy. I know it works perfectly on the mainline Linux kernel, but I'm having no luck finding how the drivers were implemented in ICS. I can't test myself just yet, still waiting for the otg cable and download mode jig to come in.
neoman4426 said:
nice. any idea if this works with the controllers for the original Xbox? I have a modded Duke I use on the computer, just replaced the Xbox!usb male with a regular usb male, and would love to be able to use it on my Cappy. I know it works perfectly on the mainline Linux kernel, but I'm having no luck finding how the drivers were implemented in ICS. I can't test myself just yet, still waiting for the otg cable and download mode jig to come in.
Click to expand...
Click to collapse
I can't say for certain, but I think it should work. I found another thread here: http://www.acertabletforum.com/forum/acer-iconia-tab-accessories/1014-what-game-controllers-work.html for the Acer Iconia tablet, and one user claims their original xbox controller works.
I suppose the only way to know for sure is to try it out yourself. Once you get your OTG set up and running, let us know how that works out for you.
Nice thread, very useful for me, I sold my wired 360 controller, and i thought i will buy a new one when i asked at sztupy's thread if the 360 controller would work with this method, he mentioned me about this thread, and i saw on the 1st page that a wireless controller would work with the receiver...luckily i have one of those but on the op says only it was not tested...so could anyone give me some info about that?
Szighy said:
Nice thread, very useful for me, I sold my wired 360 controller, and i thought i will buy a new one when i asked at sztupy's thread if the 360 controller would work with this method, he mentioned me about this thread, and i saw on the 1st page that a wireless controller would work with the receiver...luckily i have one of those but on the op says only it was not tested...so could anyone give me some info about that?
Click to expand...
Click to collapse
Well the reason I suspect that it will work is because I saw this video www.youtube.com/watch?v=TrTmsZIb0a8&feature=related. Since we now have OTG it is reasonable to assume this would work for us as well.
I tried looking around for a wireless receiver to test but unfortunately all stores near my area only seem to sell it with the controller.
Sent from my Nexus S using XDA App
developersdevelopers said:
Well the reason I suspect that it will work is because I saw this video www.youtube.com/watch?v=TrTmsZIb0a8&feature=related. Since we now have OTG it is reasonable to assume this would work for us as well.
I tried looking around for a wireless receiver to test but unfortunately all stores near my area only seem to sell it with the controller.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
hm...i'm gonna try it, so, i didn't understand the diagram show in the OP (from the dropbox link, i'm not too good in this), but would it work, if i use a USB Hub, connect the hub to the phone, a usb charger to the hub, and also the receiver?
Szighy said:
hm...i'm gonna try it, so, i didn't understand the diagram show in the OP (from the dropbox link, i'm not too good in this), but would it work, if i use a USB Hub, connect the hub to the phone, a usb charger to the hub, and also the receiver?
Click to expand...
Click to collapse
Read sztupy's post here for some ways you can connect a hub: http://forum.xda-developers.com/showpost.php?p=21503413&postcount=2. As you can see, it is indeed possible to power the controller/receiver from the hub if you have things connected properly.
When you're setting up USB OTG/host for the first time, use a simple device like a USB flash/thumb drive to verify that your connections and everything else are working properly. Then you can try hooking up other peripherals like the 360 wireless receiver.
To be honest, I haven't had much luck getting USB OTG/host to work with a hub, which is why I went and created my own 'Y' cable. It really isn't that difficult to make, and it's cheaper than using a hub, provided that you have soldering equipment already.
developersdevelopers said:
To be honest, I haven't had much luck getting USB OTG/host to work with a hub, which is why I went and created my own 'Y' cable. It really isn't that difficult to make, and it's cheaper than using a hub, provided that you have soldering equipment already.
Click to expand...
Click to collapse
you don't even need soldering equipment. I twisted and taped the wires and it worked fine.
Epic_VS said:
you don't even need soldering equipment. I twisted and taped the wires and it worked fine.
Click to expand...
Click to collapse
Nice lol.
Sent from my Nexus S using XDA App
Word of caution, the 360 controller wireless adapter draws a lot of power, i recall there being high incidences of it dropping out when plugged into PCs, so be sure to power it adequately.
tiuk said:
Word of caution, the 360 controller wireless adapter draws a lot of power, i recall there being high incidences of it dropping out when plugged into PCs, so be sure to power it adequately.
Click to expand...
Click to collapse
woah...i really don't know anything about this electronic thing how should i do?
Just look at your charger and check the output rating. It should say something like: 5.0 V, 0.75 A. Ideally you'll want the second number to be higher (like 1 A for example).
As a point of reference, my wired 360 controller works fine on 0.7 A. But as tiuk pointed out, the wireless receiver may be more demanding.
But really I think you should be okay if you stick with the standard Samsung Nexus S charger. If you need more current for your peripheral, you can simply disable the current draw of your phone with the USB Host Controller app. This way, all of the current from the charger will be directed to the device instead of being split between the device and your phone.

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