design_filter_pluto.m

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% Inputs (structure containing the following fields)
% ============================================
% Rdata      = input/output sample data rate (in Hz)
% FIR        = FIR interpolation/decimation factor
% PLL_mult   = PLL multiplication
% Fpass      = passband frequency (in Hz)
% Fstop      = stopband frequency (in Hz)
% Apass      = max ripple allowed in passband (in dB)
% Astop      = min attenuation in stopband (in dB)
% FIRdBmin   = min rejection that FIR is required to have (in dB)
% phEQ       = phase equalization on (not -1)/off (-1)
% int_FIR    = use AD9361 FIR on (1)/off (0)
% wnom       = analog cutoff frequency (in Hz)
%
% Outputs (structure containing the additional following fields)
% ===============================================
% firtaps          = fixed point FIR coefficients
% filter           = system object for visualization (does not include analog filters)
% delay            = actual delay used in phase equalization

function output = design_filter_pluto(input)
% check MATLAB version compatibility
if ~check_compat()
    warn('AD9361 Filter Wizard requires MATLAB 2015b or later, older versions are unsupported.')
end
if input.Rdata <= 520.83e3
    input.Rdata = input.Rdata*8;
    input.FPGAfilter = 1;
else
    input.Rdata = input.Rdata;
    input.FPGAfilter = 0;
end
    
output = clean_filter_fields(internal_design_filter(input));