How can I convert the bandpass function to C code?

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2020 8 20

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Converting to Matlab Coder,

I get errors in bandpass, findpicks and smooth.

I would like to know a solution to this problem.

Or is there a function written in C code?

close all
clear all
[file,path] = uigetfile('*.txt');
ReadData=load(fullfile(path,file));
ChRaw=ReadData(:,1);
Fs=32;
t=(1/Fs):(1/Fs):TotalT;
fCh=ChRaw-ChRaw(1);
fCh1=bandpass(fCh,[0.1 1],Fs);
fCh2=bandpass(fCh,[0.5 1.5],Fs);
[pk,lc]=findpeaks(-fCh2,'MinPeakDistance',20,'MinPeakHeight',0);
RR=diff(lc)/Fs;
RR=RR(RR<2 & RR>0.5);
yy = smooth(RR,10);
HR=60./yy;