I have no idea if this doesn't make any sense, but I want to know whether Wi-Fi and Hotspot are produced from the same hardware component in phones. And for your answers please do brief it.
Thank you so much for all your replies.
Yes, WiFi hardware switch between send and receive mode really quickly that we can not notice it.
Related
I want ot redirect my iPhone data to either wifi or Cellular. Based on some criteria. Is it possible to redirect whole of the iPhone data to a particular interface like to either wifi or cellular. ?
I heard that this can be done using VPN but no idea how it can be done.
Any help on this?
By default, iOS help you with redirection when you have weak/good WiFi and switch on in Setting - WLAN Assist
MultiPath is a technology switching automatically by OS
Just read this Apple Doc for more help.
You can't manipulate it easily with high level API.
After all, changing device data flow is kind of low level thing. Just like NetworkExtension is Apple provided. As far as I know, Apple does not mention it in public.
I have next case:
Wifi assist enabled
I connected my iphone to WIFI without inet
connection
I enabled Cellular Data(mobile data)
My app cant send requests. Network is unreachable.
I try open some page with safary, but "server cannot be found"
I thougth if I enable assist, ios should switch between GSM and Wifi, am I right?
Any idias or advice
I have had this problem too for a long time. Talked to Apple about it online but their solution was not to forward this to their developers for a bug fix, but to install the next update and see if this helps. So Apple's solution is to not do anything. Thanks for that.
The issue seems to be that the wifi assist only works on wifi signal strength and not on the ability to actually meaningfully transfer data to load even the most fundamental of website homepages. There is only one solution at the moment and that is that when you encounter these wifi networks that load nothing, that you have to go into your wifi option in settings and manually 'Forget this network'.
Not ideal but that's the only solution I have that seems to work.
I like to create a simple application for iOS, which read data from car through ODB II Wifi/bluetooth device and display in iPhone screen. But i don't know where to start. Please somebody help me to achieve below results.
I have both Bluetooth and wifi dongle.
Step 1 : Pair the bluetooth or Wifi dongle and iPhone.
Step 2 : Read the details through dongles
Please refer any tutorial or sample code which i can understand easily. I want to understand the these process in-depth and want to code by myself. So please help.
Thanks in advance.
As David mentioned, on iOS you can use WiFi OBD interface only. Standard Bluetooth (not BTLE) will not work. Bluetooth devices should be approved by Apple to be able to transfer data to/from iOS. AFAIK there is no such a OBD's.
Probably your OBD dongle is based on ELM327 chip. Good starting point is this doc. Read it carefully. This is everything what you need. Interesting things starts at page 7.
On iOS you should open TCP connection with your OBD IP address(for example using NSInputStream, NSOutputStream), then configure OBD using AT commands. Rest is described in section "Talking to the Vehicle" (page 30) in ELM link. Enjoy reading :)
If you need more help- just ask.
IS it possible to send data between two phones using WiFi only... That is without use of WiFi-direct, router and internet?
Are there any tutorials, Libraries or research papers ???
Well, that's exactly what WiFi direct is for... There are some other more esoteric possibilities as well, though I doubt your device supports them - check out the WiFi IBSS mode and BT HS protocol (it uses both BT and a 3rd-party RF, such as WiFi).
Yes.
If your a android user you can use this application
wififiletransfer
For IOS and other OS's they have their own WiFi direct apps.
If you a desktop user hope below article is useful
http://www.wikihow.com/Share-Files-Wirelessly
I would like to develop an (personal) iphone app to use the iPhone as a controller for a small device such as a fan or for example a light bulb. Does anyone know if there is some kind of controllable iphone-dock to use for something like this. And are there some kind of methods to use with such a dock? For example the fan just needs a variable voltage for different rpm.
Thanks in advance,
EAAccessory requires that you become a Apple hardware partner, which is very expensive and not easy (this is why you only see large companies releasing hardware accessories for iOS devices).
There's a few ways around this. The easiest way is to have your app send OSC signals over WIFI to an OSC server. I've set this up before using TouchOSC on the iPhone and an Arduino connected to my desktop via USB. It's not hard at all, but it requires that you have an Arduino connected to a computer; it's not ideal.
Alternatively you can use audio output to send commands over the line output in the iPhone's dock connector, effectively turning the iPhone into a software modem.
Good luck and if you get this figured out, post the code on github. :-D
EAAccessory framework might not be what you want because of the requirement for you to have the license and hardware. You could better implement some sort of small webserver that runs an arduino or something similar. check this out for an example of that. on the arduino, you could just have a 5v relay to control the switch of whatever device and have the other pins of the relay connected to a hot (or cold depending on the relay state) standard 120v plug so you can plug anything into it. here is a good project for arduino controlled relay
for direct serial control, you could do something like this but it would require being jailbroken. i think for a personal app, doing it via wifi would be the best way unless you jailbreak and install the full bluetooth stack where you do not need EAAccessory stuff
Check out EAAccessory Framework. Used to handle external devices.
You could try using an ultrasound detector attached to your device, and playing an audio file at the appropriate frequency etc. on the iPhone.