/* filename: tvup.plm */
/* 主機(jī)通過RS485巡檢40路分機(jī)   */
start:do;
$include(reg51.dcl)
  declare (data,DAT,ADDRL,n,I,j,k,waittime,sdflag,sdcount) byte;
  declare a(40) byte;
  declare l(10) byte;
  declare la(10) byte at (30h);
  /* 1.5 inch led bcd code */
/*  declare aco(11) byte constant (7bh,41h,0b3h,0e3h,0c9h,0eah,
				 0fah,43h,0fbh,0ebh,00h);  */    
    declare aco(11) byte constant (0fch,60h,0dah,0f2h,66h,0b6h,
				   0beh,0e0h,0feh,0f6h,00h);
  declare da literally 'p13',clk literally 'p14',ale literally 'p17',
	  mk literally 'p15',sk literally 'p16',dal literally 'p11',
	  clkl literally 'p12';

  declare sda literally 'p35',sclk literally 'p34';

sta24:procedure;
	call time(2);
	sda=1;        
	call time(2);
	sclk=1;
	call time(2);
	sda=0;
	call time(2);
	sclk=0;
	call time(2);
end sta24;

ask:    procedure;
	 call time(2);
	 sclk=1;
	 call time(2);
	 sda=1;
	 call time(2);
	 do while sda=1;
	 end;
	 call time(2);
	 sclk=0;
	 call time(2);
end ask;

stop:   procedure;
	 call time(2);
	 sda=0;
	 call time(2);
	 sclk=1;
	 call time(2);
	 sda=1;
	 call time(2);
	 sclk=0;
	 call time(2);
end stop;

shift:  procedure(da);
	 declare (i,da) byte;
	 do i=0 to 7;
	   da=scl(da,1);
	   sda=cy;
	   call time(2);
	   sclk=1;
	   call time(2);
	   sclk=0;
	   call time(2);
	 end;
end shift;

read:   procedure;
	 declare i byte;
	 do i=0 to 7;
	  call time(2);
	  sda=1;
	  call time(2);
	  sclk=1;
	  call time(2);
	  cy=sda;
	  call time(2);
	  dat=scl(dat,1);
	  call time(2);
	  sclk=0;
	  call time(2);
	 end;
end read;

rd24:   procedure;
	 declare i byte;
	 call sta24;
	 call shift(0A0h);
	 call ask;
	 call shift(ADDRL);
	 call ask;
	 do i=0 to 9;
	   call sta24;
	   call shift(0a1h);
	   call ask;
	   call read;
	   L(i)=dat;
	 end;
	 call stop;
end rd24;
wr24:   procedure;
	 declare i byte;
	 call sta24;
	 call shift(0A0h);
	 call ask;
	 call time(1);
	 call shift(addrl);
	 call ask;
	 do i=0 to 9;
	  call shift(L(i));
	  call ask;
	 end;
	 call stop;
	 call time(200);
end wr24;
out595: procedure;
	declare k byte;
	if data=0 then goto out0;
	data=not data;
out0: do k=0 to 7;
	data=scr(data,1);
	dal=cy;
	clkl=1;
	clkl=0;
      end;
end out595;

tvcon:procedure;
      declare i byte;
      do i=0 to 9;
       data=la(i);
       call out595;
      end;
      ale=0;
      ale=1;
end tvcon;

send595:procedure;
	declare k byte;
     do k=0 to 7;
	data=scr(data,1);
	da=cy;
	clk=1;
	clk=0;
     end;
end send595;

display:procedure; 
  declare (i,n) byte;
     do i=1 to 9;    
	n=l(i);
	IF N=0AAH THEN N=0AH;
	ELSE n=n mod 10;
	data=aco(n);
	call send595;
	n=l(i);
	IF N=0AAH THEN N=0AH;
	ELSE n=n/10;
	data=aco(n);
	call send595;
      end;
    ale=0;
    ;
    ale=1;
end display;

displaysd:procedure; 
  declare (i,n) byte;
     do i=1 to 9;    
	n=l(i);
	IF la(i)=7fH THEN 
       do; 
	 n=0ah;
	 do k=1 to 3;
	  do j=1 to 40;
	   call time(15);
	  end;
	  do j=1 to 15;
	   p10=0;
	   call time(24);
	   p10=1;
	   call time(24);
	  end;
	 end;   
	end;
	ELSE n=n mod 10;
	data=aco(n);
	call send595;
	n=l(i);
	if la(i)=7fh then n=0ah;
	ELSE n=n/10;
	data=aco(n);
	call send595;
     end;
    ale=0;
    ;
    ale=1;
end displaysd;

key:procedure;
    declare (i,time1,j,tem) byte;
    call time(100);
    j=9; time1=30;
    if mk=0 then
      do;
	do while time1>0;
	    tem=L(j);
	    L(j)=0aah;
	    call display;
	    call time(254);
	    call time(254);
	    L(j)=tem;
	    call display;
	    call time(254);
	    call time(254);
	    call time(254);
	    time1=time1-1;
	if mk=0 then
	     do;call time(100); /*MOD KEY PROCESS*/
	       TIME1=30;
	       IF MK=0 THEN
		DO;
		  j=j-1;
		 DO WHILE j=0FFH;
		  j=9;
		 END;
		END;
	     end;
	 IF SK=0 THEN
	   DO;CALL TIME(100);  /*SET KEY PROCESS*/
	       TIME1=30;
	       IF SK=0 THEN
	       DO;
		tem=tem+1;
		      DO WHILE tem=41;
			tem=1;
		      END;
	       END;
	       L(j)=tem;
	    END;
	  END;
	end;
end key;

main$program:
scon=50h;
pcon=00h;
tmod=20h;
tl1=0fdh;
th1=0fdh;
tr1=1;
mk=1;sk=1;
p33=1;
ADDRL=0;
clk=0;da=0;ale=1;
CALL RD24;
do i=0 to 40;
 a(i)=0;
end;
sdflag=0ffh;
P32=0;
loop:
     do i=1 to 40; 
       P32=1;
       if p33=0 then i=i or 80h;
       sbuf=i;
       i=i and 7fh;
       do while ti=0;
       end;
       ti=0;
       P32=0;
       waittime=200;
       do while ri=0;
       waittime=waittime-1;
       if waittime=0 then goto next;
       end;
       ri=0;
       a(i)=sbuf;
       P32=1;
       sbuf=a(i);
       do while ti=0;
       end;
       ti=0;
       P32=0;
next:  
     end;
       DO I=0 TO 9;
       LA(I)=A(L(I));
       END;
       call tvcon;
       call displaysd;
       do i=0 to 40;
       a(i)=0;
       end;
       DO I=0 TO 9;
	LA(I)=0;
       END;
       do i=0 to 2;
	call time(254);
       end;
       call tvcon;
       call display;
       do while mk=0;
	call key;
	ADDRL=0;
	CALL WR24;
       end;
goto loop;
end start;