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kit-cel / simulink-hackrf

Simulink blockset and MATLAB functions to interface with HackRF devices in real-time
GNU General Public License v3.0
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why source like rtl-sdr and USRP source has not int8 not complex int8? #6

Closed stackprogramer closed 7 years ago

stackprogramer commented 7 years ago

hi, it can be better with adding feature int8 for output source because examples rtl-sdr and usrp work with source real int8,if it is possible for source output hackrf one be int8, i read source code your library , but i am not sure it is possible or not. thanks very much

skoslowski commented 7 years ago

Not sure I understand what you need or what the problem ist. The output should always be complex. If you only need the real part, simply discard the imag

Complex output is set here: https://github.com/kit-cel/simulink-hackrf/blob/master/src/hackrf_source.c#L88

stackprogramer commented 7 years ago

i used two strategy: one i edited your source and make :
ssSetOutputPortComplexSignal(S, 0, COMPLEX_NO); Now we have not error real in matlab,other strategy is block or using block complex matlab,but two strategy has same errros for FM RTL-SDR example.

MATLAB System block 'HF/FM Broadcast Demodulator Baseband' error occurred when invoking 'validateInputsImpl' method of 'comm.FMBroadcastDemodulator'. The error was thrown from ' 'K:\MATLAB\R2016a\toolbox\shared\coder\coder+coder+internal\errorIf.m' at line 8 'K:\MATLAB\R2016a\toolbox\comm\comm+comm\FMBroadcastDemodulator.m' at line 211'. Caused by: The signal length (number of rows) must be a multiple of the decimation factor: 30. The decimation factor can also be obtained using the info method.

so i think i changed output frame length for hackrfone. it is deafult 2^12, i changed it to 2^power,power 2,4,.... same error when i set to 30 it messages it should set to factor 512. and..... i am searching for solving this problem.Your Source is Great like charm but we should edit examples of matlab for working with our source. thanks

skoslowski commented 7 years ago

I looks like all you need is a Buffer block to adjust the frame length. That said, this does not seem to be an issue of the source block - nor should it be modified to solve this IMO.

So, I am closing this. Please consult the simulink manual.