WSJT-X/lib/msk144code.f90

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2.3 KiB
Fortran
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2019-07-01 22:10:43 -04:00
program msk144code
! Provides examples of message packing, bit and symbol ordering,
! LDPC encoding, and other necessary details of the MSK144 protocol.
use packjt77
character*77 c77
character msg*37,msgsent*37,bad*1,msgtype*18
integer*4 i4tone(144)
include 'msk144_testmsg.f90'
nargs=iargc()
if(nargs.ne.1) then
print*,'Usage: msk144code "message"'
print*,' msk144code -t'
print*,' '
print*,'Examples:'
print*,' msk144code "KA1ABC WB9XYZ EN37"'
print*,' msk144code "<KA1ABC WB9XYZ> R-03"'
print*,' msk144code "KA1ABC WB9XYZ R EN37"'
go to 999
endif
call getarg(1,msg)
nmsg=1
if(msg(1:2).eq."-t") then
nmsg=NTEST
endif
write(*,1010)
1010 format(4x,"Message",31x,"Decoded",29x,"Err i3.n3"/100("-"))
do imsg=1,nmsg
if(nmsg.gt.1) msg=testmsg(imsg)
call fmtmsg(msg,iz) !To upper case, collapse multiple blanks
call genmsk_128_90(msg,ichk,msgsent,i4tone,itype)
i3=-1
n3=-1
call pack77(msg,i3,n3,c77)
msgtype=""
if(i3.eq.0) then
if(n3.eq.0) msgtype="Free text"
if(n3.eq.1) msgtype="DXpedition mode"
if(n3.eq.2) msgtype="EU VHF Contest"
if(n3.eq.3) msgtype="ARRL Field Day"
if(n3.eq.4) msgtype="ARRL Field Day"
if(n3.eq.5) msgtype="Telemetry"
if(n3.ge.6) msgtype="Undefined type"
endif
if(i3.eq.1) msgtype="Standard msg"
if(i3.eq.2) msgtype="EU VHF Contest"
if(i3.eq.3) msgtype="ARRL RTTY Roundup"
if(i3.eq.4) msgtype="Nonstandard calls"
if(i3.ge.5) msgtype="Undefined msg type"
if(i3.ge.1) n3=-1
if(i4tone(41).lt.0) then
msgtype="Sh msg"
i3=-1
endif
bad=" "
if(msg.ne.msgsent) bad="*"
if(i3.eq.0.and.n3.ge.0) then
write(*,1020) imsg,msg,msgsent,bad,i3,n3,msgtype
1020 format(i2,'.',1x,a37,1x,a37,1x,a1,2x,i1,'.',i1,1x,a18)
elseif(i3.ge.1) then
write(*,1022) imsg,msg,msgsent,bad,i3,msgtype
1022 format(i2,'.',1x,a37,1x,a37,1x,a1,2x,i1,'.',1x,1x,a18)
elseif(i3.lt.0) then
write(*,1024) imsg,msg,msgsent,bad,msgtype
1024 format(i2,'.',1x,a37,1x,a37,1x,a1,6x,a18)
endif
enddo
if(nmsg.eq.1) then
n=144
if(i4tone(41).lt.0) n=40
write(*,1030) i4tone(1:n)
1030 format(/'Channel symbols'/(72i1))
endif
999 end program msk144code