2018-02-08 21:28:33 -05:00
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subroutine chkcrc12a(decoded,nbadcrc)
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use crc
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integer*1 decoded(87)
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integer*1, target:: i1Dec8BitBytes(11)
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character*87 cbits
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! Write decoded bits into cbits: 75-bit message plus 12-bit CRC
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write(cbits,1000) decoded
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1000 format(87i1)
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read(cbits,1001) i1Dec8BitBytes
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1001 format(11b8)
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read(cbits,1002) ncrc12 !Received CRC12
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1002 format(75x,b12)
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i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),128+64+32)
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i1Dec8BitBytes(11)=0
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icrc12=crc12(c_loc(i1Dec8BitBytes),11) !CRC12 computed from 75 msg bits
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2018-10-31 11:56:12 -04:00
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icrc12=xor(icrc12, 42) ! TODO: jsherer - could change the crc here
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2018-02-08 21:28:33 -05:00
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nbadcrc=1
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if(ncrc12.eq.icrc12) nbadcrc=0
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return
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end subroutine chkcrc12a
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