.TH DRS232 1 2020-12-04 drs232 "User commands"
.SH NAME
drs232 \- Horus SSTV reception using the codec2 library.
.SH SYNOPSIS
.B drs232 usage:
.IR InputOneBitPerChar
.IR OutputPacket
.IR [-v[v]]
.PP
.SH DESCRIPTION
.PP
Looks for a unique word in series of bits.  When found, deframes a RS232
encoded frame of bytes.  Used for high bit rate Horus SSTV reception.
.PP
  Frame format:
.PP
    16 bytes 0x55 - 0xabcdef01 UW - 256 bytes of payload - 2 bytes CRC
.PP
  Each byte is encoded as a 10 bit RS232 serial word: 
.PP
    0 LSB .... MSB 1
.PP
.SH OPTIONS
The first argument, 
.IR InputOneBitPerChar
is the file name of a file with Horus encoded bits. If "-" is
given the input is taken from stdin.
.PP
The second argument, 
.IR OutputPackets
is the file name of a file to be created with modem sample data. If "-" is
given the output is sent to stdout.
.PP
The optional third argument,
.IR [-v]
.IR [-vv]
set the verbosity of the output.
.PP
.SH "SEE ALSO"
.BR drs232_ldpc (1),
.BR fdmdv_mod (1),
.BR fdmdv_demod (1),
.BR fdmdv_get_test_bits (1),
.BR fdmdv_put_test_bits (1)