mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-17 09:31:59 -05:00
25 lines
663 B
Fortran
25 lines
663 B
Fortran
subroutine chkcrc13a(decoded,nbadcrc)
|
|
|
|
use crc
|
|
integer*1 decoded(90)
|
|
integer*1, target:: i1Dec8BitBytes(12)
|
|
character*90 cbits
|
|
|
|
! Write decoded bits into cbits: 77-bit message plus 13-bit CRC
|
|
write(cbits,1000) decoded
|
|
1000 format(90i1)
|
|
read(cbits,1001) i1Dec8BitBytes
|
|
1001 format(12b8)
|
|
read(cbits,1002) ncrc13 !Received CRC13
|
|
1002 format(77x,b13)
|
|
|
|
i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),128+64+32+16+8)
|
|
i1Dec8BitBytes(11:12)=0
|
|
icrc13=crc13(c_loc(i1Dec8BitBytes),12) !CRC13 computed from 77 msg bits
|
|
|
|
nbadcrc=1
|
|
if(ncrc13.eq.icrc13) nbadcrc=0
|
|
|
|
return
|
|
end subroutine chkcrc13a
|