fir.fdl

//arm-core
ipblock myarm 
{
	iptype "armsystem";
	ipparm "exec=main";
}

ipblock master_req(out data : ns(32)) 
{
	iptype "armsystemsource";
	ipparm "core=myarm";
	ipparm "address=0x80000000";
}

ipblock master_ack(in data : ns(32)) 
{
	iptype "armsystemsink";
	ipparm "core=myarm";
	ipparm "address=0x80000004";
}

ipblock master_data_out(out data : ns(32)) 
{
	iptype "armsystemsource";
	ipparm "core=myarm";
	ipparm "address=0x80000008";
}

ipblock master_data_in(in data : ns(32)) 
{
	iptype "armsystemsink";
	ipparm "core=myarm";
	ipparm "address=0x8000000C";
}

dp fir 
{
	use myarm;

	sig req : tc(32);
	sig ack : tc(32);
	sig data_out : tc(32);
	sig data_in : tc(32);

	use master_req(req);
	use master_ack(ack);
	use master_data_out(data_out);
	use master_data_in(data_in);

	reg r_req : ns(1);
	reg r_data_in : tc(32);
	reg i : tc(10);
	reg j : tc(10);
	reg filteredPulse : tc(120);

	lookup coeff : tc(120) = {5460247557719829600000000000000,-8004881711870030,-6416500658676090100000000000000,
	-10472570535644001000000000000000,-8772581474920759600000000000000,12788601717414099,12765278610623299000000000000000,
	21858014182866100000000000000000,18656894103009100000000000000000,-23284724501884100,-26751462414624600000000000000000,
	-44883870122118799000000000000000,-37422196988082601000000000000000,37989532124542797,51158134745953399000000000000000,
	83974453940786099000000000000000,68645375188532204000000000000000,-54796353056166003,-90914665470718404000000000000000,
	-147536388082741000000000000000000,-119626104967189010000000000000000,71297372651231898,157664648229160000000000000000000,
	256998900276193990000000000000000,210528838383762000000000000000000,-85128586627866800,-290097940801829000000000000000000,
	-492117508516849020000000000000000,-427435305950880020000000000000000,94308478093984005,736794505899311950000000000000000,
	1579414047477470100000000000000000,2247660658160179900000000000000000,2501734198457409900000000000000000,
	2247660658160179900000000000000000,1579414047477470100000000000000000,736794505899311950000000000000000,94308478093984005,
	-427435305950880020000000000000000,-492117508516849020000000000000000,-290097940801829000000000000000000,-85128586627866800,
	210528838383762000000000000000000,256998900276193990000000000000000,157664648229160000000000000000000,71297372651231898,
	-119626104967189010000000000000000,-147536388082741000000000000000000,-90914665470718404000000000000000,
	-54796353056166003,68645375188532204000000000000000,83974453940786099000000000000000,51158134745953399000000000000000,
	37989532124542797,-37422196988082601000000000000000,-44883870122118799000000000000000,-26751462414624600000000000000000,
	-23284724501884100,18656894103009100000000000000000,21858014182866100000000000000000,12765278610623299000000000000000,
	12788601717414099,-8772581474920759600000000000000,-10472570535644001000000000000000,-6416500658676090100000000000000,
	-8004881711870030,5460247557719829600000000000000};

	lookup pulse : tc(5)={-4,-2,0,-4,-6,-4,-2,-4,-6,-6,-4,-4,-6,-6,-2,6,12,8,0,-16,-38,-60,-84,-90,-66,
		               -32,-4,2,-4,8,12,12,10,6,6,6,4,0,0,0,0,0,-2,-4,0,0,0,-2,-2,0,0,-2,-2,-2,-2,0,
		               -2,-4,-2,0,-2,-4,-4,2,0,0,-2,-4,-2,0,0,-2,-4,-2,0,0,-4,-4,-2,-2,-4,-6,-6,-4,-4,
		               8,-10,-8,-6,-6,-8,-12,-10,-8,-8,-10,-12,-10,-8,-8,-10,-10,-8,-6,-6,-8,-8,-4,-2,
		               -4,-4,-4,0,0,-2,-4,-2,-2,0,-4};

	always
	{
		r_req = req;
		data_in = r_data_in;
	}

	sfg start 
	{ 
		i = 0; 
		j = 1; 
	}

	sfg firstOperation { filteredPulse = pulse(i)*coeff(0); }

	sfg calculate 
	{ 
		filteredPulse = filteredPulse + pulse(i-j)*coeff(j);
		j=j+1; 
	}

	sfg notice { $display("Pulse have been recieved from SW"); }

	//reset filteredPulse, reset j, increase i
	sfg goForNextPulse 
	{ 
		i=i+1; 
		j=1; 
		filteredPulse = 0;
	}

	sfg printFilteredPulse
	{
		$display($dec,"    i = ", i,"     ",filteredPulse);
	}

	sfg ack0 { ack = 0; }
	sfg ack1 { ack = 1; }

	sfg sendBackFilteredPulseToSW { r_data_in = filteredPulse; }

	sfg readOnePulseFromSW 
	{
		pulse(i) = data_out;
		i = i+1; 
	}
}

fsm controller(fir)
{
	initial s0;
	state s1, s2, s3, s4, s5, s6, s7;

	//read pulse from SW
	@s0 if(r_req) then (readOnePulseFromSW,ack1) -> s1;
	else (ack0) -> s0;

	@s1 if(~r_req) then (readOnePulseFromSW,ack0) -> s2;
	else (ack1) -> s1;

	@s2 if(i==120) then (notice,ack0) -> s3;
	else (ack0) -> s0;

	//pulse received completely
	//start computing
	@s3 (start,ack0) -> s4;

	@s4 if(i<120) then (firstOperation,ack0) -> s5;
	else (ack0) -> s6;

	//calculate filteredPulse
	@s5 if((j<67) & (i-j>=0)) then (calculate,ack1) -> s5;
	//filteredPulse calculated, data will print in console, data will send back tp SW
	else (goForNextPulse,printFilteredPulse,ack0,sendBackFilteredPulseToSW) -> s7;

	//idle
	@s6 (ack0) -> s6;

	@s7 if(r_req) then (ack1) -> s4;
	else (ack0) -> s7;

}

system S 
{
	fir;
}