B4i Library iExternalAccessory - A flexible and customize way to connect MFi devices

This library was built for create apps using devices with iAP protocol and MFi.

Installation instructions:

- Copy the *.a and *.h files into the folder "Libs" in your MAC or in your MAC HOSTED by AnywhereSoftware, normally in "B4i-MacServer\Libs" folder

-Copy the iExternalAccesory.xml to your custom libraries folder in B4i
- Select in your REFERENCED LIBRARIES

Version history:
V1.0.0 (First public release):
- Initial version

iExternalAccessory
Author: Alberto Iglesias (alberto@visualnet.inf.br)
Version: 1

• iExternalAccessory
  Events:
  • _ReadData (BytesReceived As String)
  • _onClose
  • _onConnected (Accessory As String)
  • _onDisconnected (Accessory As String)
  • _onOpen
  • _onStream (Event As String)
  • onInitialized (EventName As String)
  Methods:
  • EACloseSession
  • EAGetAccessories As NSString*
  • EAOpenSession:: (name As NSString*, protocol As NSString*) As Boolean
    Scan External Accessories
    -(void)EAScan;
  • EASendHex: (hextosend As NSString*) As Boolean
  • EASendText: (texttosend As NSString*) As Boolean
  • Initialize:: (bi As B4I*, EventName As NSString*)
    Initializes the object.
  • LicenseShow
    Show License
  • isConnected As Boolean
  Properties:
  • Author As NSString* [read only]
    Author of this Library
  • DebugMode As BOOL
    Enable/Disable Debug mode from Library
  • ErrorCode As Int [read only]
    Last Error Code
  • ErrorDescription As NSString* [read only]
    Last Error Description
  • LicenseEmail As NSString*
    License Email
  • LicenseKey As NSString*
    License Key
  • Version As NSString* [read only]
    Library Version

* This version is fully functional, the only one difference is when send message, sometimes can be show a donation message.
Please consider a simple €10 donation and I send to you the Library without "Donationware" message alert.

Get the lastest version in http://vnsoft.es/store/

You can get your license key in our library store:

 

[Gijsen]

This is great.
Can is also be used with the hosted builder ?

 

[Alberto Iglesias]

Of course, I will ask EREL to put in host server, like anothers library.

Erel,

Can you put this new library in host server?

Thanks

Alberto Iglesias

 

[Erel]

I've uploaded it.

 

[vincentehsu]

I used the hosted server,so I guess that i don't need to care about *.a and *.h files,right?
I've try to execute the sample EASample,First I connected to my device via BT,then I opened EASample,It always show "NOT CONNECTED",could u tell me how to use the library?

 

[Erel]

I used the hosted server,so I guess that i don't need to care about *.a and *.h files,right?

That's true.

 

[vincentehsu]

I've try to execute the sample EASample,First I connected to my device via BT,then I opened EASample,It always show "NOT CONNECTED",could u tell me how to use the library?

 

[walterf25]

I went to your website and paid for the library, when will I receive it?

Walter

 

[Alberto Iglesias]

I went to your website and paid for the library, when will I receive it?

Walter

Hello Walter, check your email info@.... and check the response from Paypal email, I sent on both!

 

[walterf25]

Hello Walter, check your email info@.... and check the response from Paypal email, I sent on both!

This is the only email I received.



Walter

 

[Alberto Iglesias]

Check your junk mail, I sent 2 times this email below

 

[walterf25]

Check your junk mail, I sent 2 times this email below

View attachment 85806

Ah Thank you, I see it now, yes it was in my spam email folder.

Thanks again,
Walter

 

[Alberto Iglesias]

 

[Turbo3]

My problem is with _ReadData (BytesReceived As String) .

Why is ReadData defined as returning a String when it is returning a pointer to a string?

The only thing that works on this "String" is Length. I can find no way to actually access the data being returned by ReadData.

When debug mode is enabled I can see all the bytes being received but I can find no way to get those bytes out of " BytesReceived ".

If you run the sample code for this library and do a "Log(BytesReceived)" you will get a pointer being printed not the actual string. Typing it as a String seems to make the actual string inaccessible. But this library has been around for some years so there must be a way to access the actual string.

Can someone provide some code as to how to convert the BytesReceived parameter into a real string instead of a pointer?

==================== Solution====================

Fixed by redefining the parameter to what it really is a byte array not a String. Documentation should be corrected.

_ReadData(BytesReceived() As Byte )

 

[Turbo3]

Did not take long to find the next problem. This all being done using the above sample code provided.

After the ReadData returns the data it does not seem to clear it so the next time data is received it is just added to the end of the previous data.

This means the BytesReceived continues to increase in length returning all the previously received data plus the new data.

How are people clearing the BytesReceived so only new data is returned?

What am I missing here?

I am running version 1.0.6 of the Library and the Host Builder to compile.

 

[Alberto Iglesias]

Hello my friend, what device you trying to get this string? Because I 've tested on some devices here as MFI joystick and MFI Cable and works fine. This library just intercept what MFI respond, I dont control anything inside the library, just receive and pass.

 

[Turbo3]

I am using an OBDLink MX+ OBDII adapter.

From my point of view the BytesReceived is not being cleared and includes the new data from the OBDLink MX+ concatenated to all the data previously sent.

Are you sure the library is clearing the BytesReceived variable once you give it to my app?

 

[Turbo3]

Instead of receiving:
Data_1
Data_2
Data_3

I get:
Data_1
Data_1 Data_2
Data_1 Data_2 Data_3

 

[Alberto Iglesias]

Huummmm interesting... I will check today if have any updates from apple MFI and if is the case, I will fix this or will check if have any way to clear manually

 

[Turbo3]

Great. Thanks.

That is the last thing I need working before I can integrate support for the OBDLink MX+ into my app. I have many users requesting this support.