function [StatReg,ERR] = getStatusReg(COMOPT,s)
% Demande le registe de status de la carte (stand alone function)
%
% Output : 
%   StatReg  -> Renvoie le registre sous forme d'un string
%   ERR      -> 0 : ok
%               1 : TimeOut 
%

ERR         = 0;
TimeOut     = COMOPT.USART_TIMEOUT_SHORT;
PacketSize  = 8; % uint32 is sent on 8 (half) bytes

flushinput(s);  %Vide le buffer
[~] = usartSendPacket(COMOPT.PC_MESSAGE_SEND_STATUS, [], COMOPT, s);   %Demande le registre


tmp = 0;
while(TimeOut>0)
    BA = get(s,{'BytesAvailable'});
    if(BA{1}<PacketSize)
        pause(0.01);
        TimeOut = TimeOut-0.01; %trés aproximatif
    else
        tmp = fread(s,1);
        if((tmp >= COMOPT.StartFrame) && (tmp-COMOPT.StartFrame == COMOPT.STM_MESSAGE_STATUS))
            tmp     = fread(s,8);
            TimeOut = 0;
        else
            TimeOut = TimeOut-0.01; %trés aproximatif
        end
    end
end

if(max(size(tmp))~=8)
    StatReg=[];
    ERR=1;
    return;
end

StatReg = dec2bin(2^28*tmp(7) + 2^24*tmp(8) + 2^20*tmp(5) + 2^16*tmp(6)+...
                  2^12*tmp(3) + 2^8*tmp(4) + 2^4*tmp(1) + tmp(2),32);
%78 56 34 12 because this corresponds to the data bytes 3 2 1 0.
%StatReg = tmp;
end