Initial Commit

.svn/pristine/df/df0c5399c4e4905c2f8d30dcdd0c7daa141ac165.svn-base

@@ -0,0 +1,50 @@
+program jt4code
+
+! Provides examples of message packing, bit and symbol ordering,
+! convolutional encoding, and other necessary details of the JT4
+! protocol.
+
+  use jt4
+  use packjt
+  character*22 msg,decoded,bad*1,msgtype*13
+  integer i4tone(206)
+  include 'testmsg.f90'
+
+  nargs=iargc()
+  if(nargs.ne.1) then
+     print*,'Usage: jt4code "message"'
+     print*,'       jt4code -t'
+     go to 999
+  endif
+
+  call getarg(1,msg)
+  nmsg=1
+  if(msg(1:2).eq."-t") nmsg=NTEST
+
+  write(*,1010)
+1010 format("     Message                 Decoded                Err? Type"/   &
+            74("-"))
+  do imsg=1,nmsg
+     if(nmsg.gt.1) msg=testmsg(imsg)
+     call fmtmsg(msg,iz)                !To upper case, collapse multiple blanks
+     ichk=0
+     call gen4(msg,ichk,decoded,i4tone,itype)
+
+     msgtype=""
+     if(itype.eq.1) msgtype="Std Msg"
+     if(itype.eq.2) msgtype="Type 1 prefix"
+     if(itype.eq.3) msgtype="Type 1 suffix"
+     if(itype.eq.4) msgtype="Type 2 prefix"
+     if(itype.eq.5) msgtype="Type 2 suffix"
+     if(itype.eq.6) msgtype="Free text"
+
+     bad=" "
+     if(decoded.ne.msg) bad="*"
+     write(*,1020) imsg,msg,decoded,bad,itype,msgtype
+1020 format(i2,'.',2x,a22,2x,a22,3x,a1,i3,": ",a13)
+  enddo
+
+  if(nmsg.eq.1) write(*,1030) i4tone
+1030 format(/'Channel symbols'/(30i2))
+
+999 end program jt4code