mirror of https://github.com/saitohirga/WSJT-X.git
144 lines
3.7 KiB
Fortran
144 lines
3.7 KiB
Fortran
subroutine wsjtgen
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! Compute the waveform to be transmitted.
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! Input: txmsg message to be transmitted, up to 28 characters
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! samfacout fsample_out/11025.d0
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! Output: iwave waveform data, i*2 format
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! nwave number of samples
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! sendingsh 0=normal; 1=shorthand (FSK441) or plain text (JT65)
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parameter (NMSGMAX=28) !Max characters per message
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parameter (NSPD=25) !Samples per dit
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parameter (NDPC=3) !Dits per character
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parameter (NWMAX=661500) !Max length of waveform = 60*11025
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parameter (NTONES=4) !Number of FSK tones
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character msg*28,msgsent*22,idmsg*22
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real*8 freq,dpha,twopi
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character testfile*27
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logical lcwid
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integer*2 icwid(110250),jwave(NWMAX)
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integer*1 hdr(44)
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integer*2 nfmt2,nchan2,nbitsam2,nbytesam2
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character*4 ariff,awave,afmt,adata
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common/hdr/ariff,lenfile,awave,afmt,lenfmt,nfmt2,nchan2, &
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nsamrate,nbytesec,nbytesam2,nbitsam2,adata,ndata,jwave
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equivalence (ariff,hdr)
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data twopi/6.28318530718d0/
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include 'gcom1.f90'
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include 'gcom2.f90'
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fsample_out=11025.d0*samfacout
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lcwid=.false.
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if(idinterval.gt.0) then
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n=(mod(int(tsec/60.d0),idinterval))
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if(n.eq.(1-txfirst)) lcwid=.true.
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if(idinterval.eq.1) lcwid=.true.
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endif
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msg=txmsg
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ntxnow=ntxreq
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! Convert all letters to upper case
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do i=1,28
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if(msg(i:i).ge.'a' .and. msg(i:i).le.'z') &
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msg(i:i)= char(ichar(msg(i:i))+ichar('A')-ichar('a'))
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enddo
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txmsg=msg
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! Find message length
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do i=NMSGMAX,1,-1
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if(msg(i:i).ne.' ') go to 10
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enddo
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i=1
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10 nmsg=i
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nmsg0=nmsg
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if(msg(1:1).eq.'@') then
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if(msg(2:2).eq.'/' .or. ichar(msg(2:2)).eq.92) then
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txmsg=msg
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testfile=msg(2:)
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#ifdef CVF
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open(18,file=testfile,form='binary',status='old',err=12)
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#else
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open(18,file=testfile,access='stream',status='old',err=12)
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#endif
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go to 14
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12 print*,'Cannot open test file ',msg(2:)
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go to 999
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14 call cs_lock('wsjtgena')
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read(18) hdr
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if(ndata.gt.NTxMax) ndata=NTxMax
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call rfile(18,iwave,ndata,ierr)
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close(18)
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call cs_unlock
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if(ierr.ne.0) print*,'Error reading test file ',msg(2:)
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nwave=ndata/2
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do i=nwave,NTXMAX
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iwave(i)=0
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enddo
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sending=txmsg
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sendingsh=2
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go to 999
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endif
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! Transmit a fixed tone at specified frequency
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freq=1000.0
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if(msg(2:2).eq.'A' .or. msg(2:2).eq.'a') freq=882
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if(msg(2:2).eq.'B' .or. msg(2:2).eq.'b') freq=1323
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if(msg(2:2).eq.'C' .or. msg(2:2).eq.'c') freq=1764
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if(msg(2:2).eq.'D' .or. msg(2:2).eq.'d') freq=2205
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if(freq.eq.1000.0) then
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call cs_lock('wsjtgenb')
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read(msg(2:),*,err=1) freq
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goto 2
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1 txmsg='@1000'
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nmsg=5
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nmsg0=5
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2 call cs_unlock
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endif
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nwave=60*fsample_out
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dpha=twopi*freq/fsample_out
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do i=1,nwave
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iwave(i)=32767.0*sin(i*dpha)
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enddo
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goto 900
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endif
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! We're in JT65 mode.
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if(mode(5:5).eq.'A') mode65=1
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if(mode(5:5).eq.'B') mode65=2
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if(mode(5:5).eq.'C') mode65=4
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call cs_lock('wsjtgenc')
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call gen65(msg,mode65,samfacout,iwave,nwave,sendingsh,msgsent)
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call cs_unlock
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if(lcwid) then
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! Generate and insert the CW ID.
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wpm=25.
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freqcw=800.
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idmsg=MyCall//' '
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call gencwid(idmsg,wpm,freqcw,samfacout,icwid,ncwid)
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k=nwave
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do i=1,ncwid
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k=k+1
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iwave(k)=icwid(i)
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enddo
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do i=1,2205 !Add 0.2 s of silence
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k=k+1
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iwave(k)=0
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enddo
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nwave=k
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endif
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900 sending=txmsg
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if(sendingsh.ne.1) sending=msgsent
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nmsg=nmsg0
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999 return
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end subroutine wsjtgen
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