n5ac/smartsdr-dsp
1
0
Fork 0
mirror of https://github.com/n5ac/smartsdr-dsp.git synced 2026-01-01 14:10:01 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add sending of end bits at end of transmission. Needs heave cleanup.

Browse source
This commit is contained in:
Ed Gonzalez 2015-08-24 15:07:01 -05:00
parent b82637e5d2
commit e48c43913c
1 changed files with 96 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

115
DSP_API/SmartSDR_Interface/sched_waveform.c
View file

@ -387,6 +387,8 @@ static void* _sched_waveform_thread(void* param)
float tx_float_in_24k[DV_PACKET_SAMPLES * DECIMATION_FACTOR + FILTER_TAPS];
BOOL inhibit_tx = FALSE;
BOOL flush_tx = FALSE;
// ======================= Initialization Section =========================
@ -432,7 +434,7 @@ static void* _sched_waveform_thread(void* param)
initial_tx = TRUE;
initial_rx = TRUE;
BOOL initial_tx_flush = FALSE;
uint32 dstar_tx_frame_count = 0;
// show that we are running
@ -482,6 +484,10 @@ static void* _sched_waveform_thread(void* param)
// Set the transmit 'initial' flag
initial_tx = TRUE;
inhibit_tx = FALSE;
flush_tx = FALSE;
_end_of_transmission = FALSE;
gmsk_resetMODFilter(_gmsk_mod);
enum DEMOD_STATE state = DEMOD_UNKNOWN;
for ( i = 0 ; i < PACKET_SAMPLES ; i++ )
@ -573,6 +579,9 @@ static void* _sched_waveform_thread(void* param)
initial_rx = TRUE;
// Check for new receiver input packet & move to TX1_cb.
if ( !inhibit_tx ) {
for( i = 0 ; i < PACKET_SAMPLES ; i++ )
{
//output("Outputting ")
@ -622,7 +631,7 @@ static void* _sched_waveform_thread(void* param)
initial_tx = FALSE;
/* Create Sync */
for ( i = 0 ; i < 64 * 10 ; i += 2 ) {
for ( i = 0 ; i < 64 + 20; i += 2 ) {
gmsk_encode(_gmsk_mod, TRUE, buf, DSTAR_RADIO_BIT_LENGTH);
for ( j = 0 ; j < DSTAR_RADIO_BIT_LENGTH ; j++ ) {
@ -677,6 +686,8 @@ static void* _sched_waveform_thread(void* param)
}
}
initial_tx_flush = TRUE;
dstar_tx_frame_count = 0;
} else {
/* Data and Voice */
@ -707,6 +718,7 @@ static void* _sched_waveform_thread(void* param)
}
} else {
dstar_pfcs pfcs;
pfcs.crc16 = 0xFFFF;
@ -762,31 +774,96 @@ static void* _sched_waveform_thread(void* param)
}
dstar_tx_frame_count++;
}
}
uint32 tx_check_samples = PACKET_SAMPLES;
if ( _end_of_transmission && !inhibit_tx ) {
if(cfbContains(TX4_cb) >= tx_check_samples )
{
for( i = 0 ; i < PACKET_SAMPLES ; i++)
{
// Set up the outbound packet
fsample = cbReadFloat(TX4_cb);
float end_buf[END_PATTERN_LENGTH_BITS * DSTAR_RADIO_BIT_LENGTH] = {0.0};
unsigned char end_bytes[END_PATTERN_LENGTH_BYTES] = {0};
memcpy(end_bytes, END_PATTERN_BYTES, END_PATTERN_LENGTH_BYTES * sizeof(unsigned char));
gmsk_encodeBuffer(_gmsk_mod, end_bytes, END_PATTERN_LENGTH_BITS, end_buf, END_PATTERN_LENGTH_BITS * DSTAR_RADIO_BIT_LENGTH);
for ( i = 0 ; i < END_PATTERN_LENGTH_BITS * DSTAR_RADIO_BIT_LENGTH ; i++ ) {
cbWriteFloat(TX4_cb, end_buf[i]);
}
// put the fsample into the outbound packet
((Complex*)buf_desc->buf_ptr)[i].real = fsample;
((Complex*)buf_desc->buf_ptr)[i].imag = fsample;
}
} else {
memset( buf_desc->buf_ptr, 0, PACKET_SAMPLES * sizeof(Complex));
}
for ( i = 0 ; i < 20 ; i += 2 ) {
gmsk_encode(_gmsk_mod, TRUE, buf, DSTAR_RADIO_BIT_LENGTH);
initial_tx = FALSE;
for ( j = 0 ; j < DSTAR_RADIO_BIT_LENGTH ; j++ ) {
cbWriteFloat(TX4_cb, buf[j]);
}
gmsk_encode(_gmsk_mod, FALSE, buf, DSTAR_RADIO_BIT_LENGTH);
for ( j = 0 ; j < DSTAR_RADIO_BIT_LENGTH ; j++ ) {
cbWriteFloat(TX4_cb, buf[j]);
}
}
flush_tx = TRUE;
initial_tx_flush = TRUE;
}
}
emit_waveform_output(buf_desc);
if ( !inhibit_tx ) {
uint32 tx_check_samples = PACKET_SAMPLES;
if(cfbContains(TX4_cb) >= tx_check_samples )
{
for( i = 0 ; i < PACKET_SAMPLES ; i++)
{
// Set up the outbound packet
fsample = cbReadFloat(TX4_cb);
// put the fsample into the outbound packet
((Complex*)buf_desc->buf_ptr)[i].real = fsample;
((Complex*)buf_desc->buf_ptr)[i].imag = fsample;
}
} else {
memset( buf_desc->buf_ptr, 0, PACKET_SAMPLES * sizeof(Complex));
}
emit_waveform_output(buf_desc);
if ( flush_tx && initial_tx_flush ) {
initial_tx_flush = FALSE;
inhibit_tx = TRUE;
//output("TX4_cb has %d samples\n", cfbContains(TX4_cb));
while ( cfbContains(TX4_cb) > 0 ) {
if ( cfbContains(TX4_cb) > PACKET_SAMPLES ) {
for( i = 0 ; i < PACKET_SAMPLES ; i++)
{
// Set up the outbound packet
fsample = cbReadFloat(TX4_cb);
// put the fsample into the outbound packet
((Complex*)buf_desc->buf_ptr)[i].real = fsample;
((Complex*)buf_desc->buf_ptr)[i].imag = fsample;
}
} else {
int end_index = 0;
for ( i = 0 ; i <= cfbContains(TX4_cb); i++ ) {
fsample = cbReadFloat(TX4_cb);
((Complex*)buf_desc->buf_ptr)[i].real = fsample;
((Complex*)buf_desc->buf_ptr)[i].imag = fsample;
end_index = i+1;
}
for ( i = end_index ; i < PACKET_SAMPLES ; i++ ) {
((Complex*)buf_desc->buf_ptr)[i].real = 0.0f;
((Complex*)buf_desc->buf_ptr)[i].imag = 0.0f;
}
}
emit_waveform_output(buf_desc);
}
}
}
}
hal_BufferRelease(&buf_desc);
}