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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
58 lines
1.6 KiB
Fortran
58 lines
1.6 KiB
Fortran
subroutine genft8(msg,mygrid,bcontest,msgsent,msgbits,itone)
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! Encode an FT8 message, producing array itone().
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use crc
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use packjt
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include 'ft8_params.f90'
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character*22 msg,msgsent
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character*6 mygrid
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character*87 cbits
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logical bcontest
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integer*4 i4Msg6BitWords(12) !72-bit message as 6-bit words
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integer*1 msgbits(KK),codeword(3*ND)
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integer*1, target:: i1Msg8BitBytes(11)
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integer itone(NN)
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integer icos7(0:6)
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data icos7/2,5,6,0,4,1,3/ !Costas 7x7 tone pattern
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call packmsg(msg,i4Msg6BitWords,itype,bcontest) !Pack into 12 6-bit bytes
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call unpackmsg(i4Msg6BitWords,msgsent,bcontest,mygrid) !Unpack to get msgsent
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i3bit=0 !### temporary ###
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write(cbits,1000) i4Msg6BitWords,32*i3bit
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1000 format(12b6.6,b8.8)
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read(cbits,1001) i1Msg8BitBytes(1:10)
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1001 format(10b8)
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i1Msg8BitBytes(10)=iand(i1Msg8BitBytes(10),128+64+32)
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i1Msg8BitBytes(11)=0
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icrc12=crc12(c_loc(i1Msg8BitBytes),11)
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! For reference, here's how to check the CRC
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! i1Msg8BitBytes(10)=icrc12/256
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! i1Msg8BitBytes(11)=iand (icrc12,255)
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! checksumok = crc12_check(c_loc (i1Msg8BitBytes), 11)
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! if( checksumok ) write(*,*) 'Good checksum'
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write(cbits,1003) i4Msg6BitWords,i3bit,icrc12
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1003 format(12b6.6,b3.3,b12.12)
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read(cbits,1004) msgbits
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1004 format(87i1)
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call encode174(msgbits,codeword) !Encode the test message
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! Message structure: S7 D29 S7 D29 S7
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itone(1:7)=icos7
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itone(36+1:36+7)=icos7
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itone(NN-6:NN)=icos7
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k=7
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do j=1,ND
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i=3*j -2
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k=k+1
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if(j.eq.30) k=k+7
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itone(k)=codeword(i)*4 + codeword(i+1)*2 + codeword(i+2)
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enddo
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return
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end subroutine genft8
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