axi512_hls.cpp

#include <stdio.h>


#define DATA_SIZE 17
#define VEC_SIZE 16


struct _float16{
	float vec[VEC_SIZE];
};

typedef struct _float16 float16;

extern "C" {
void vadd_pipelined(float16 *c, const float16 *a, const float16 *b, const int len) {
#pragma HLS INTERFACE m_axi port = c offset = slave bundle = gmem1
#pragma HLS INTERFACE m_axi port = a offset = slave bundle = gmem2
#pragma HLS INTERFACE m_axi port = b offset = slave bundle = gmem3
#pragma HLS INTERFACE s_axilite port = c bundle = control
#pragma HLS INTERFACE s_axilite port = a bundle = control
#pragma HLS INTERFACE s_axilite port = b bundle = control
#pragma HLS INTERFACE s_axilite port = len bundle = control
#pragma HLS INTERFACE s_axilite port = return bundle = control

#pragma HLS data_pack variable=a
#pragma HLS data_pack variable=b
#pragma HLS data_pack variable=c

	float16 result;
    float16 buff;

    for(int v=0;v<2;v++){
    	if((v+1)*VEC_SIZE -1 < len){
    		buff = a[v];
    	}else{
    		int bnd = len - (v)*VEC_SIZE;
    		for(int j=0;j<bnd;j++){
    			buff.vec[j] = a[v].vec[j];
    		}
    	}

    	for(int i=0;i<VEC_SIZE;i++){
    		if(v*VEC_SIZE+i<len){
    			result.vec[i] = buff.vec[i];
    			printf("v=%d, i=%d, read value A: %f\n", v, i, buff.vec[i]);
    		}
    		else
    		{
    			result.vec[i] = 0;
    		}
    	}

    	//----------------------------------------------------------------------
    	if((v+1)*VEC_SIZE -1 < len){
			buff = b[v];
		}else{
			int bnd = len - (v)*VEC_SIZE;
			for(int j=0;j<bnd;j++){
				buff.vec[j] = b[v].vec[j];
			}
		}
    	for(int i=0;i<VEC_SIZE;i++){
    		if(v*VEC_SIZE+i<len){
    			result.vec[i] += buff.vec[i];
    			printf("v=%d, i=%d, read value B: %f\n", v, i, buff.vec[i]);
    		}
    		else
    		{
    			result.vec[i] = 0;
    		}
    	}

    	//----------------------------------------------------------------------

    	if((v+1)*VEC_SIZE -1 < len){
    		c[v] = result;
		}else{
			int bnd = len - (v)*VEC_SIZE;
			for(int j=0;j<bnd;j++){
				c[v].vec[j] = result.vec[j];
			}
		}
    }

}
}