Fonction d'interfaçage
fr
M_freq
function [x,y,typ]=M_freq(job,arg1,arg2)
x=[];y=[];typ=[]
select job
case 'plot' then
standard_draw(arg1)
case 'getinputs' then
[x,y,typ]=standard_inputs(arg1)
case 'getoutputs' then
[x,y,typ]=standard_outputs(arg1)
case 'getorigin' then
[x,y]=standard_origin(arg1)
case 'set' then
x=arg1;
graphics=arg1.graphics;
model=arg1.model;
exprs=graphics.exprs
while %t do
[ok,frequ,offset,exprs]=getvalue('Set block parameters',..
['Sample time';'Offset'],..
list('vec',-1,'vec',-1),exprs)
if ~ok then break,end
offset=offset(:);frequ=frequ(:);
if (size(frequ,'*'))<>(size(offset,'*')) then message("offset and frequency must have the same size");ok=%f;
elseif or(frequ<0) then message("Frequency must be a positif number");ok=%f;
elseif or(abs(offset) > frequ) then
message("The |Offset| must be less than the Frequency");ok=%f
end
if ok then
v=[frequ;offset];
v=v(find(v<>0));
min_v=min(v);max_v=max(v);
if (max_v/min_v)>1e5 then message(['The difference between the frequencies is very large';..
'the clocks could not be synchronized']);
ok=%f;
return;
end
[pgcd,den]=fixedpointgcd(v);
off=0;
[m1,k]=uni(frequ,offset);
frd=m1.*(den)
frequ=frequ(k);
frd1=round((frequ.*(den)));
frd1=uint32(frd1);
ppcm=lcm(frd1);
frd1=double(frd1);
frd=double(frd);
offset=offset(k);
mat=[];
for i=1:size(frd,'*')
mat1=[offset(i)*double(den):frd1(i):double(ppcm)]';
mat=[mat;[mat1 2^(i-1)*ones(size(mat1,'*'),1)]];
end
[n,k]=gsort(mat(:,1),'g','i');
mat=mat(k,:);
if size(mat,1)>1 then
while (find(mat(1:$-1,1)==mat(2:$,1))<>[]) then
ind=find(mat(1:$-1,1)==mat(2:$,1));
ind=ind(1);
mat(ind,2)=mat(ind,2)+mat(ind+1,2);
mat(ind+1,:)=[];
end
m=[mat(2,1);mat(2:$,1)-mat(1:$-1,1)];
m=[m,mat(:,2),mat(:,1)];
count=1;
if find(m(:,3)==0)<>[] then
m(find(m(:,3)==0),:)=[];
count=0;
end
mn=(2**size(m1,'*'))-1;
fir=-ones(1,mn);
fir(mat(1,2))=mat(1,1)/double(den);
else
m=[frd1 1 frd1];
mat=m;
count=0;
off=offset;
fir=off;
end
if or(model.rpar(:)<>[frequ;offset]) then needcompile=4;y=needcompile,end
model.opar=list(m,double(den),off,count)
mn=(2**size(m1,'*'))-1;
if mn>3 then graphics.sz=[40+(mn-3)*10 40]
else graphics.sz=[50 40]
end
model.evtin=1
model.evtout=ones(mn,1);
model.firing=fir;
graphics.exprs=exprs
x.graphics=graphics
x.model=model
break
end
end
needcompile=resume(needcompile)
case 'define' then
model=scicos_model()
model.sim=list('m_frequ',4)
model.evtout=[1;1;1]
model.evtin=1
model.rpar=[]
model.opar=list([1 1 0;1 1 1;1 3 2],1,0,0);
model.blocktype='d'
model.firing=[0 -1 -1]
model.dep_ut=[%f %f]
exprs=[sci2exp([1;2]);sci2exp([0;0])]
gr_i=[
// 'a=evstr(arg1.graphics.exprs(1))';
// '[x,y,typ]=standard_outputs(arg1) ';
// 'xx=[x,orig(1)+sz(1)]';
// 'for i=1:size(a,''*'')';
// 'xstringb(x(2^(i-1))-sz(1)/16,orig(2)+sz(2)/32,string(a(i)),xx(2**(i-1)+1)-xx(2**(i-1)),sz(2)/16)';
// 'end';
'xstringb(orig(1),orig(2),['' Multiple '';'' Frequency ''],sz(1),sz(2));']
x=standard_define([2.5 2],model,exprs,gr_i)
end
endfunction
function [value,denom_com]=fixedpointgcd(v)
x=log10(v);
f=round((min(x)+max(x))/2);
v=v./10^(f);
[N,D]=rat(v,1d-5);
denom_com=lcm(uint32(D));
N=uint32(N)*denom_com./uint32(D);
value=gcd(N);
if f>0 then value=value*10^f;
else denom_com=double(denom_com)*10^(-f);
end
endfunction
function [m,k]=uni(fr,of)
k=[];
m=[];
for i=1:size(fr,'*')
ind=find(m==fr(i));
if ind==[] then
m=[m;fr(i)];
k=[k;i];
else
for j=ind
if of(i)<> of(j) then
m=[m;fr(i)];
k=[k;i];
end
end
end
end
endfunction