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https://github.com/saitohirga/WSJT-X.git
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dd1362b69a
Generic message packing and unpacking routines now understand antipode grid contest messages. These messages are now recognized as standard messages in message response processing and dealt with appropriately when contest mode is selected and applicable (currently FT8 and MSK144 only). git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8062 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
66 lines
2.3 KiB
Fortran
66 lines
2.3 KiB
Fortran
subroutine gen9(msg0,ichk,msgsent,i4tone,itype)
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! Encodes a JT9 message and returns msgsent, the message as it will
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! be decoded, and an integer array i4tone(85) of 9-FSK tone values
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! in the range 0-8.
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use packjt
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character*22 msg0
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character*22 message !Message to be generated
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character*22 msgsent !Message as it will be received
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integer*4 i4Msg6BitWords(13) !72-bit message as 6-bit words
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integer*1 i1Msg8BitBytes(13) !72 bits and zero tail as 8-bit bytes
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integer*1 i1EncodedBits(207) !Encoded information-carrying bits
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integer*1 i1ScrambledBits(207) !Encoded bits after interleaving
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integer*4 i4DataSymbols(69) !Data symbols (values 0-7)
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integer*4 i4GrayCodedSymbols(69) !Gray-coded symbols (values 0-7)
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integer*4 i4tone(85) !Tone #s, data and sync (values 0-8)
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include 'jt9sync.f90'
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save
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if(msg0(1:1).eq.'@') then
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read(msg0(2:5),*,end=1,err=1) nfreq
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go to 2
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1 nfreq=1000
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2 i4tone(1)=nfreq
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else
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message=msg0
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do i=1,22
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if(ichar(message(i:i)).eq.0) then
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message(i:)=' '
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exit
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endif
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enddo
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do i=1,22 !Strip leading blanks
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if(message(1:1).ne.' ') exit
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message=message(i+1:)
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enddo
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call packmsg(message,i4Msg6BitWords,itype,.false.) !Pack into 12 6-bit bytes
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call unpackmsg(i4Msg6BitWords,msgsent,.false.,' ') !Unpack to get msgsent
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if(ichk.ne.0) go to 999
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call entail(i4Msg6BitWords,i1Msg8BitBytes) !Add tail, make 8-bit bytes
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nsym2=206
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call encode232(i1Msg8BitBytes,nsym2,i1EncodedBits) !Encode K=32, r=1/2
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i1EncodedBits(207)=0
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call interleave9(i1EncodedBits,1,i1ScrambledBits) !Interleave bits
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i1ScrambledBits(207)=0
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call packbits(i1ScrambledBits,69,3,i4DataSymbols) !Pk 3-bits into words
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call graycode(i4DataSymbols,69,1,i4GrayCodedSymbols) !Apply Gray code
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! Insert sync symbols at ntone=0 and add 1 to the data-tone numbers.
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j=0
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do i=1,85
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if(isync(i).eq.1) then
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i4tone(i)=0
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else
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j=j+1
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i4tone(i)=i4GrayCodedSymbols(j)+1
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endif
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enddo
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endif
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999 return
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end subroutine gen9
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