Lightnix is a open source serial/parallel port holiday flasher driver for windows. You can see its full capability by opening winlight.exe at the command prompt.

Examples

Flashing lights from serial port com1

Winlight.exe flash=100 com=\\.\COM1

The number in blue is the slowness speed of the flash in milliseconds and \\.\com1 is the com port path. This way can only flash up to 2 strains of lights at once.

program winlight;
{$APPTYPE CONSOLE}
{$RESOURCE Lightnix.res}
uses
  SysUtils,
  windows,
  Classes;
const DRVF_USERDEF_MASK=1;

type
TDriverInfo=record
cbSize,Flags,mask:integer;
CurrentBuildDate,RequiredBuildDate:TSYSTEMTIME;
etc,errormsg:ShortString;
end;
TOut32=procedure(io:word;x:byte);stdcall;
TInp32=function(io:word):byte;stdcall;
TDriverInit=function(var drvinfo:tdriverinfo):integer;stdcall;
TDriverInp=function(xdefault:integer):integer;stdcall;
TDriverOut=function(x:integer):integer;stdcall;
var x,y,i:integer;
params:tstringlist;
io:word;
dinfo:TDriverInfo;
Out32:tout32;
Inp32:tinp32;
inpout32,drv:hmodule;
driverinit:tdriverinit;
driverinp:tdriverinp;
driverout:tdriverout;
happ,com:thandle;
url:string;
verinfo:_BY_HANDLE_FILE_INFORMATION;
label loop1,loop2;
begin
dinfo.cbSize:=sizeof(dinfo);
happ:=createfile(PChar(paramstr(0)),generic_read,file_share_read,nil,open_existing,
file_attribute_normal,0);
getfileinformationbyhandle(happ,verinfo);
closehandle(happ);
filetimetosystemtime(verinfo.ftLastWriteTime,dinfo.currentbuilddate);
writeln('Lightnix32 build ',dinfo.currentbuilddate.wMonth,'/',
dinfo.currentbuilddate.wDay,'/',dinfo.currentbuilddate.wYear);
if paramcount = 0 then begin
writeln('Usage: WINLIGHT [option=value]');
writeln('I/O Options:');
writeln('IOAddr     Specifies the I/O address to use');
writeln('OUT        Specifies what value to set the I/O Address');
writeln('WAIT       Specifies the number of seconds to wait,before the address reverts back');
Writeln('FLASH      Enter flash mode, its value is a delay in miliseconds');
writeln('MASK       Defines the maximum value that it will oscilate to, use with FLASH');
writeln('');
writeln('Serial Options:');
writeln('COM        Specifies the COM Port to use. Example COM=\\.\COM1');
writeln('MCR        Specifies what to set the Modem Control Register D for Data Terminal Ready and R for Request To Send');
writeln('WAIT       Same as above but for serial ports');
writeln('FLASH      Same as above but for serial ports');
writeln('');
writeln('Plugin Options:');
writeln('DRIVER     Defines the driver DLL file');
writeln('ETC        Defines extra settings for the driver');
writeln('WAIT       Same as above but for driver');
writeln('OUT        Same as above but for driver');
writeln('OUT2       Used only when WAIT is used, its the reverting value');
writeln('FLASH      Same as above but for driver');
writeln('MASK       Same as above but for driver');
exit;
end;
params:=tstringlist.create;
for i:= 1 to paramcount do
params.Add(paramstr(i));
if params.Values['DRIVER']<>'' then begin
dinfo.CurrentBuildDate.wDayOfWeek:=0;
copymemory(@dinfo.requiredbuilddate,@dinfo.currentbuilddate,sizeof(tsystemtime));
drv:=loadlibrary(pchar(params.values['driver']));
if drv=0 then begin writeln(Syserrormessage(getlasterror));exit;end;
@DriverInit:=GetProcAddress(drv,'DriverInit');
@DriverInp:=GetProcAddress(drv,'DriverInp');
@DriverOut:=GetProcAddress(drv,'DriverOut');
if (@driverinit=nil)or(@driverinp=nil)or(@driverout=nil) then begin
writeln('Some functions couldnt load');
exitprocess(error_bad_driver);
end;
dinfo.mask:=strtointdef(params.values['Mask'],255);
dinfo.etc:=params.Values['etc'];
i:=driverinit(dinfo);
if encodedate(dinfo.currentbuilddate.wYear,dinfo.currentbuilddate.wMonth,
dinfo.currentbuilddate.wDay)<encodedate(dinfo.requiredbuilddate.wyear,
dinfo.requiredbuilddate.wMonth,dinfo.requiredbuilddate.wDay) then begin
writeln('This driver requires a newer build in order to run.');
exitprocess(error_bad_device);
end;
if (i<>0) or (dinfo.errormsg<>'') then begin
if dinfo.errormsg='' then begin
writeln('DriverInit:',syserrormessage(i));
exitprocess(i);
end else begin writeln('DriverInit:',dinfo.errormsg);
exitprocess(error_bad_driver);
end;
end;
if params.Values['wait']<>''then begin
writeln('Requesting for starting value...');
x:=DriverInp(strtointdef(params.values['out2'],0));
if x<-1 then begin writeln('Driver failed!');exitprocess(error_bad_driver);end;
if x=-1 then writeln('There is no starting value') else
writeln('Starting value is $',IntToHex(x,0));
driverout(strtointdef(params.values['out'],0));
sleep(1000*strtointdef(params.values['wait'],1));
driverout(x);
end;
end else
if params.Values['IOAddr']<>'' then
begin
inpout32:=LoadLibrary('inpout32.dll');
@out32:=getprocaddress(inpout32,'Out32');
@inp32:=Getprocaddress(inpout32,'Inp32');
io:= strtointdef(params.values['IOAddr'],$378);
x:=inp32(io);
writeln('Starting value for $'+inttohex(io,0)+' is $'+inttohex(x,2));
if strtointdef(Params.values['Wait'],0)>0 then begin
y:=strtointdef(params.values['out'],$ff);
writeln('Outputing $'+inttohex(y,2));
out32(io,y);
sleep(1000*strtointdef(params.Values['wait'],1));
writeln('Reverting back');
out32(io,x);
exitprocess(0);
end;
if params.Values['Flash']<>'' then begin
write('Sending pulses');
loop1:
for x:= 0 to StrTointDef(params.values['Mask'],255) do
begin
out32(io,x);
write('.');
sleep(strtointdef(params.values['flash'],100));
end;
goto loop1;
end else begin
 writeln('Sending Byte');
 Out32(io,StrToIntDef(params.values['out'],0));
end;
end else if params.Values['COM']<>'' then begin
com:=createfile(@params.values['com'][1],generic_read,0,nil,open_existing,
file_attribute_normal,0);
if com=INVALID_HANDLE_VALUE then begin
writeln(Syserrormessage(getlasterror));
exitprocess(getlasterror);
end;
if not escapecommfunction(com,clrdtr) then begin
writeln(syserrormessage(getlasterror));
closehandle(com);
exitprocess(getlasterror);
end;
if Params.Values['WAIT']<>'' then begin
writeln('Waiting...');
sleep(1000*strtointdef(params.values['wait'],1));
if pos('D',params.values['MCR'])>0 then escapecommfunction(com,setdtr);
if pos('R',params.values['MCR'])>0 then escapecommfunction(com,setrts);
end;
if params.Values['Flash']<>'' then begin
write('Sending Pulses');
loop2:
EscapeCommfunction(com,clrdtr);
EscapeCommFunction(com,clrrts);
write('.');
sleep(strtointdef(Params.values['flash'],100));
EscapeCommfunction(com,setdtr);
EscapeCommFunction(com,clrrts);
write('.');
sleep(strtointdef(Params.values['flash'],100));
EscapeCommfunction(com,clrdtr);
EscapeCommFunction(com,setrts);
write('.');
sleep(strtointdef(Params.values['flash'],100));
EscapeCommfunction(com,setdtr);
EscapeCommFunction(com,setrts);
write('.');
sleep(strtointdef(Params.values['flash'],100));
goto loop2;
end;
closehandle(com);
end else writeln('Cannot tell what to use, perhaps you forgot an option.');
end.