WSJT-X/plrs.f90

91 lines
2.3 KiB
Fortran
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program plrs
! Pseudo-Linrad "Send" program. Reads recorded Linrad data from "*.tf2"
! files, and multicasts it as Linrad would do for timf2 data.
integer RMODE
parameter(RMODE=0)
parameter (NBPP=1392)
parameter (NZ=60*96000)
parameter (NBYTES=8*NZ)
parameter (NPPR=NBYTES/NBPP)
integer*1 userx_no,iusb
integer*2 nblock
real*8 d(NZ),buf8
integer fd
integer open,read,close
integer nm(11)
character*8 fname
real*8 center_freq,dmsec,dtmspacket,tmsec
common/plrscom/center_freq,msec2,fsample,iptr,nblock,userx_no,iusb,buf8(174)
! 8 4 4 4 2 1 1 1392
data nm/45,46,48,50,52,54,55,56,57,58,59/
data nblock/0/
nargs=iargc()
if(nargs.ne.1) then
print*,'Usage: plrs <iters>'
go to 999
endif
fname="all.tf2"//char(0)
iters=1
userx_no=0
iusb=1
center_freq=144.125d0
dtmspacket=1000.d0*NBPP/(8.d0*96000.d0)
fsample=96000.0
npkt=0
call setup_ssocket !Open a socket for multicasting
do iter=1,iters
fd=open(fname,RMODE) !Open file for reading
dmsec=-dtmspacket
nsec0=time()
do ifile=1,11
print*,'Reading file',ifile
ns0=0
tmsec=1000*(3600*7 + 60*nm(ifile))-dtmspacket
nr=read(fd,d,NBYTES)
if(nr.ne.NBYTES) then
print*,'Error reading file all.tf2'
go to 999
endif
k=0
do ipacket=1,NPPR
dmsec=dmsec+dtmspacket
tmsec=tmsec+dtmspacket
msec2=nint(tmsec)
msec=nint(dmsec)
do i=1,NBPP/8
k=k+1
buf8(i)=d(k)
enddo
nblock=nblock+1
call send_pkt(center_freq)
npkt=npkt+1
if(mod(npkt,100).eq.0) then
nsec=time()-nsec0
nwait=msec-1000*nsec
! Pace the data at close to its real-time rate
if(nwait.gt.0) call usleep(nwait*1000)
endif
ns=mod(msec2/1000,60)
if(ns.ne.ns0) write(*,1010) npkt,ns,0.001*msec2,nwait
1010 format('npkt:',i10,' ns:',i6,' t:',f10.3,' nwait:',i8)
ns0=ns
enddo
enddo
i=close(fd)
enddo
999 end program plrs
! To compile: % gfortran -o plrs plrs.f90 plrs_subs.c cutil.c