Code Example - Code Example - 2024.2 English

#include <adf.h>

#include "fir_sr_sym_graph.hpp"

#define FIR129_NITER 8
#define FIR129_LENGTH 129
#define FIR129_SHIFT 15
#define FIR129_ROUND_MODE 0
#define FIR129_INPUT_SAMPLES 256

using namespace adf;

namespace fir_example {

class test_fir : public graph {
   private:
    // FIR coefficients
    std::vector<int16> m_taps = std::vector<int16>{
        -1,   -3,   3,    -1,   -3,   6,    -1,   -7,   9,     -1,   -12,  14,    1,     -20,  19,   5,    -31,
        26,   12,   -45,  32,   23,   -63,  37,   40,   -86,   40,   64,   -113,  39,    96,   -145, 33,   139,
        -180, 17,   195,  -218, -9,   266,  -258, -53,  357,   -299, -118, 472,   -339,  -215, 620,  -376, -360,
        822,  -409, -585, 1118, -437, -973, 1625, -458, -1801, 2810, -470, -5012, 10783, 25067};
    // FIR Graph class
    using fir_g = xf::dsp::aie::fir::sr_sym::
        fir_sr_sym_graph<cint16, int16, FIR129_LENGTH, FIR129_SHIFT, FIR129_ROUND_MODE, FIR129_INPUT_SAMPLES>;

   public:
    port<input> in;
    port<output> out;
    // Constructor - with FIR graph class initialization
    test_fir() {
        // optional location constraints on the graph kernel
        // kernel *filter_kernels = filter.getKernels();
        // runtime<ratio>(*filter_kernels) = 0.515625;
        // location<kernel>(filter_kernels[0]) = tile(LOC_XBASE, LOC_YBASE);
        //// Make connections
        // Size of window in Bytes.
        // Margin gets automatically added within the FIR graph class.
        // Margin equals to FIR length rounded up to nearest multiple of 32 Bytes.
        fir_g firGraph(m_taps);
        connect<>(in, firGraph.in[0]);
        connect<>(firGraph.out[0], out);
    };
};
};