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minimodem: match sync_byte in the fsk layer

This commit is contained in:
Kamal Mostafa 2012-09-02 12:02:06 -07:00
parent 9187dd60a7
commit 0f3338a91b
1 changed files with 11 additions and 8 deletions
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19
src/minimodem.c
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@ -877,15 +877,23 @@ main( int argc, char*argv[] )
// start--v v--stop
// char *expect_bits_string = "10dddddddd1";
//
char expect_bits_string[33] = "dddddddddddddddddddddddddddddddd";
char expect_bits_string[33];
int j = 0;
if ( bfsk_nstopbits != 0.0 )
expect_bits_string[j++] = '1';
if ( bfsk_nstartbits != 0 ) // FIXME -- sets only one start bit
expect_bits_string[j++] = '0';
int i;
for ( i=0; i<bfsk_n_data_bits; i++,j++ ) {
if ( ! carrier && bfsk_sync_on_data )
expect_bits_string[j] = ( (bfsk_sync_byte>>i)&1 ) + '0';
else
expect_bits_string[j] = 'd';
}
if ( bfsk_nstopbits != 0.0 )
expect_bits_string[bfsk_n_data_bits + j++] = '1';
expect_bits_string[bfsk_n_data_bits + j++] = 0;
expect_bits_string[j++] = '1';
expect_bits_string[j++] = 0;
unsigned int expect_n_bits = strlen(expect_bits_string);
unsigned int expect_nsamples = nsamples_per_bit * expect_n_bits;
@ -947,11 +955,6 @@ main( int argc, char*argv[] )
confidence, amplitude, track_amplitude );
}
if ( bfsk_sync_on_data ) {
if ( ! carrier && bits != bfsk_sync_byte )
confidence = 0.0;
}
#define FSK_MAX_NOCONFIDENCE_BITS 20
if ( confidence <= fsk_confidence_threshold ) {