mirror of https://github.com/pavel-demin/ft8d.git
25 lines
651 B
Fortran
25 lines
651 B
Fortran
subroutine chkcrc14a(decoded,nbadcrc)
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use crc
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integer*1 decoded(91)
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integer*1, target:: i1Dec8BitBytes(12)
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character*91 cbits
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! Write decoded bits into cbits: 77-bit message plus 14-bit CRC
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write(cbits,1000) decoded
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1000 format(91i1)
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read(cbits,1001) i1Dec8BitBytes
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1001 format(12b8)
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read(cbits,1002) ncrc14 !Received CRC14
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1002 format(77x,b14)
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i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),transfer(128+64+32+16+8,0_1))
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i1Dec8BitBytes(11:12)=0
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icrc14=crc14(c_loc(i1Dec8BitBytes),12) !CRC14 computed from 77 msg bits
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nbadcrc=1
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if(ncrc14.eq.icrc14) nbadcrc=0
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return
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end subroutine chkcrc14a
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