i searched so many but For sink and block simulink it has error frame length ...

[stackprogramer]

i asked question on mathworks forum

how i can convert copmlex int16 to int16 in matlab for Software Defined Radio source HackRF One?

https://www.mathworks.com/matlabcentral/answers/338657-how-i-can-convert-copmlex-int16-to-int16-in-matlab-for-software-defined-radio-source-hackrf-one

i too describe hackrf source and sink in matlab with other DSP block???
you can see more detailed info in http://blog.stackprogramer.xyz/en/2017/05/21/adapting-fm-simulink-matlab-for-hackrf-one/

i used even buffer but the all has errors, i even can not send a constant varrible with sink.
can you guide which block we should use for connecting DSP matlab and Sink and source
i am thinking on this,so new other solution that i find will share here.
thanks

[stackprogramer]

matlab usually work with matrix but we can not any data matrix to source...

[stackprogramer]

data type of sink and source matlab can not work with vector,matrix they had error dimension errors...

Error reported by S-function 'hackrf_sink' in 'doc_fmbroadcast/HackRF Sink':
Frame size must be a power of two (<= 2^18)
Component: Simulink | Category: Block error
Error in port widths or dimensions. Output port 1 of 'doc_fmbroadcast/Data Type Conversion' is a [15200x1] matrix.
this link describe that dimension matrix error more.
https://www.mathworks.com/matlabcentral/answers/113342-how-to-solve-this-error

[stackprogramer]

Sample-based signals are the most basic type of signal and are the easiest to construct from a real-world (physical) signal. You can create a sample-based signal by sampling a physical signal at a given sample rate, and outputting each individual sample as it is received. In general, most Digital-to-Analog converters output sample-based signals.

You can create frame-based signals from sample-based signals. When you buffer a batch of N samples, you create a frame of data. You can then output sequential frames of data at a rate that is 1/N times the sample rate of the original sample-based signal. The rate at which you output the frames of data is also known as the frame rate of the signal.

Frame-based data is a common format in real-time systems. Data acquisition hardware often operates by accumulating a large number of signal samples at a high rate. The hardware then propagates those samples to the real-time system as a block of data. Doing so maximizes the efficiency of the system by distributing the fixed process overhead across many samples. The faster data acquisition is suspended by slower interrupt processes after each frame is acquired, rather than after each individual sample. See Benefits of Frame-Based Processing for more information.
so we should work frame-based instead sample based in simulink in rtl-sdr source it has a sample per frame parameter. hackrf one sink rame size must be a power of two (<2^18)
https://www.mathworks.com/help/dsp/ug/sample-and-frame-based-concepts.html

[stackprogramer]

finally i used block buffer in matlab..... you can screenshot of it.
we used buffer block to convert sample-based signal to frame-based signal.
https://drive.google.com/open?id=0Bxkt-d32S34gVExLSkRPN245aEE
you can read more info about buffer block in matlab in
https://www.mathworks.com/help/dsp/ug/buffering-and-frame-based-processing.html
error frame length now is fixed with this buffer but error dimension yet exist in simulink matlab

Error in port widths or dimensions. Output port 1 of 'doc_fmbroadcast/Buffer' is a [64x25600] matrix.
Component: Simulink | Category: Block error
Error in port widths or dimensions. Invalid dimension has been specified for input port 1 of 'doc_fmbroadcast/HackRF Sink'.

[stackprogramer]

Hi finally with some changes in parameter FM TX is configure with out any errors......
screen shot of model:
https://drive.google.com/open?id=0Bxkt-d32S34gbnRqdVhOTG1CTG8
link model simulink matlab rs2016a FM TX broadcast for HackRF one:
https://drive.google.com/open?id=0Bxkt-d32S34gZ3htMFMybVhWN3c

[stackprogramer]

FM RX hackrf one matlab simulink with out any errors.......
screen shot:
https://drive.google.com/open?id=0Bxkt-d32S34gcnJPNzRzT05NNUE
link simulink file matlab rs2016a
https://drive.google.com/open?id=0Bxkt-d32S34gOW1YOWxzVVJfZXM

i soon share video fm RX/TX real operation.
best regards stackprogramer

[stackprogramer]

after some work FM RX work like charm simulink file download
https://drive.google.com/open?id=0Bxkt-d32S34gWm1pNTNyT3dheWM
we will share video

[stackprogramer]

share video fm receiver
http://www.youtube.com/watch?v=-nrmLL6OfhQ