mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-09-05 21:06:39 -04:00
44b4c180f6
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7716 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
45 lines
1.1 KiB
Fortran
45 lines
1.1 KiB
Fortran
subroutine genft8(msg,msgsent,itone)
|
|
|
|
! Encode an FT8 message, producing array itone().
|
|
|
|
use crc
|
|
use packjt
|
|
use hashing
|
|
include 'ft8_params.f90'
|
|
|
|
character*22 msg,msgsent
|
|
character*87 cbits
|
|
integer*4 i4Msg6BitWords(12) !72-bit message as 6-bit words
|
|
integer*1 msgbits(KK),codeword(3*ND)
|
|
integer itone(NN)
|
|
integer icos7(0:6)
|
|
data icos7/2,5,6,0,4,1,3/ !Costas 7x7 tone pattern
|
|
|
|
call packmsg(msg,i4Msg6BitWords,itype) !Pack into 12 6-bit bytes
|
|
call unpackmsg(i4Msg6BitWords,msgsent) !Unpack to get msgsent
|
|
i3bit=0 !### temporary ###
|
|
icrc12=0 !### temporary ###
|
|
|
|
write(cbits,1000) i4Msg6BitWords,i3bit,icrc12
|
|
1000 format(12b6.6,b3.3,b12.12)
|
|
read(cbits,1002) msgbits
|
|
1002 format(87i1)
|
|
print*,cbits
|
|
|
|
call encode174(msgbits,codeword) !Encode the test message
|
|
|
|
! Message structure: S7 D29 S7 D29 S7
|
|
itone(1:7)=icos7
|
|
itone(36+1:36+7)=icos7
|
|
itone(NN-6:NN)=icos7
|
|
k=7
|
|
do j=1,ND
|
|
i=3*j -2
|
|
k=k+1
|
|
if(j.eq.30) k=k+7
|
|
itone(k)=codeword(i)*4 + codeword(i+1)*2 + codeword(i+2)
|
|
enddo
|
|
|
|
return
|
|
end subroutine genft8
|