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protocol1.c
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protocol1.c
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/* Copyright (C)
* 2018 - John Melton, G0ORX/N6LYT
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <gtk/gtk.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <net/if_arp.h>
#include <net/if.h>
#include <ifaddrs.h>
#include <semaphore.h>
#include <string.h>
#include <errno.h>
#include <math.h>
#include <wdsp.h>
#include "band.h"
#include "channel.h"
#include "discovered.h"
#include "bpsk.h"
#include "mode.h"
#include "filter.h"
#include "receiver.h"
#include "transmitter.h"
#include "wideband.h"
#include "adc.h"
#include "dac.h"
#include "radio.h"
#include "main.h"
#include "protocol1.h"
#include "audio.h"
#include "signal.h"
#include "vfo.h"
#include "transmitter.h"
//#include "vox.h"
#include "ext.h"
#include "error_handler.h"
#include "hl2.h"
#define min(x,y) (x<y?x:y)
#define SYNC0 0
#define SYNC1 1
#define SYNC2 2
#define C0 3
#define C1 4
#define C2 5
#define C3 6
#define C4 7
#define DATA_PORT 1024
#define SYNC 0x7F
#define OZY_BUFFER_SIZE 512
//#define OUTPUT_BUFFER_SIZE 1024
// ozy command and control
#define MOX_DISABLED 0x00
#define MOX_ENABLED 0x01
#define MIC_SOURCE_JANUS 0x00
#define MIC_SOURCE_PENELOPE 0x80
#define CONFIG_NONE 0x00
#define CONFIG_PENELOPE 0x20
#define CONFIG_MERCURY 0x40
#define CONFIG_BOTH 0x60
#define PENELOPE_122_88MHZ_SOURCE 0x00
#define MERCURY_122_88MHZ_SOURCE 0x10
#define ATLAS_10MHZ_SOURCE 0x00
#define PENELOPE_10MHZ_SOURCE 0x04
#define MERCURY_10MHZ_SOURCE 0x08
#define SPEED_48K 0x00
#define SPEED_96K 0x01
#define SPEED_192K 0x02
#define SPEED_384K 0x03
#define MODE_CLASS_E 0x01
#define MODE_OTHERS 0x00
#define ALEX_ATTENUATION_0DB 0x00
#define ALEX_ATTENUATION_10DB 0x01
#define ALEX_ATTENUATION_20DB 0x02
#define ALEX_ATTENUATION_30DB 0x03
#define LT2208_GAIN_OFF 0x00
#define LT2208_GAIN_ON 0x04
#define LT2208_DITHER_OFF 0x00
#define LT2208_DITHER_ON 0x08
#define LT2208_RANDOM_OFF 0x00
#define LT2208_RANDOM_ON 0x10
#define CLOCK_PRECISION 1E9
double last_time = 0;
static int data_socket;
static struct sockaddr_in data_addr;
static int data_addr_length;
static int output_buffer_size;
static unsigned char control_in[5]={0x00,0x00,0x00,0x00,0x00};
static gboolean running;
static long ep4_sequence;
static long ep6_sequence = 0;
static int current_rx=0;
static int mic_samples=0;
static int mic_sample_divisor=1;
static unsigned char output_buffer[OZY_BUFFER_SIZE];
static int output_buffer_index=8;
static int tx_output_buffer_index=8;
static int command=1;
enum {
SYNC_0=0,
SYNC_1,
SYNC_2,
CONTROL_0,
CONTROL_1,
CONTROL_2,
CONTROL_3,
CONTROL_4,
LEFT_SAMPLE_HI,
LEFT_SAMPLE_MID,
LEFT_SAMPLE_LOW,
RIGHT_SAMPLE_HI,
RIGHT_SAMPLE_MID,
RIGHT_SAMPLE_LOW,
MIC_SAMPLE_HI,
MIC_SAMPLE_LOW,
SKIP
};
static int state=SYNC_0;
static GThread *receive_thread_id;
static void start_protocol1_thread();
static gpointer receive_thread(gpointer arg);
static void process_ozy_input_buffer(unsigned char *buffer);
static void process_wideband_buffer(unsigned char *buffer);
void ozy_send_buffer();
static void protocol1_tx_scheduler_monitor(void);
static unsigned char metis_buffer[1032];
static long send_sequence=-1;
static int metis_offset=8;
static int metis_write(unsigned char ep,unsigned char* buffer,int length);
static void metis_start_stop(int command);
static void metis_send_buffer(unsigned char* buffer,int length);
static void metis_restart();
#define COMMON_MERCURY_FREQUENCY 0x80
#define PENELOPE_MIC 0x80
#ifdef USBOZY
//
// additional defines if we include USB Ozy support
//
#include "ozyio.h"
static GThread *ozy_EP4_rx_thread_id;
static GThread *ozy_EP6_rx_thread_id;
static gpointer ozy_ep4_rx_thread(gpointer arg);
static gpointer ozy_ep6_rx_thread(gpointer arg);
static void start_usb_receive_threads();
static int ozyusb_write(char* buffer,int length);
#define EP6_IN_ID 0x86 // end point = 6, direction toward PC
#define EP2_OUT_ID 0x02 // end point = 2, direction from PC
#define EP6_BUFFER_SIZE 2048
static unsigned char usb_output_buffer[EP6_BUFFER_SIZE];
static unsigned char ep6_inbuffer[EP6_BUFFER_SIZE];
static unsigned char usb_buffer_block = 0;
#endif
void protocol1_stop() {
metis_start_stop(0);
running=FALSE;
}
void protocol1_run() {
fprintf(stderr,"protocol1_run\n");
start_protocol1_thread();
for(int i=8;i<OZY_BUFFER_SIZE;i++) {
output_buffer[i]=0;
}
metis_restart();
}
void protocol1_set_mic_sample_rate(int rate) {
mic_sample_divisor=rate/48000;
}
void protocol1_init(RADIO *r) {
fprintf(stderr,"protocol1_init\n");
protocol1_set_mic_sample_rate(r->sample_rate);
if(radio->local_microphone) {
if(audio_open_input(r)!=0) {
radio->local_microphone=FALSE;
}
}
#ifdef USBOZY
//
// if we have a USB interfaced Ozy device:
//
if (radio->discovered->device == DEVICE_OZY) {
fprintf(stderr,"protocol1_init: initialise ozy on USB\n");
ozy_initialise();
start_usb_receive_threads();
}
else
#endif
//start_protocol1_thread();
}
#ifdef USBOZY
//
// starts the threads for USB receive
// EP4 is the wideband endpoint
// EP6 is the "normal" USB frame endpoint
//
static void start_usb_receive_threads()
{
int rc;
fprintf(stderr,"protocol1 starting USB receive thread: buffer_size=%d\n",radio->buffer_size);
ozy_EP6_rx_thread_id = g_thread_new( "OZY EP6 RX", ozy_ep6_rx_thread, NULL);
if( ! ozy_EP6_rx_thread_id )
{
fprintf(stderr,"g_thread_new failed for ozy_ep6_rx_thread\n");
exit( -1 );
}
}
//
// receive threat for USB EP4 (wideband) not currently used.
//
static gpointer ozy_ep4_rx_thread(gpointer arg)
{
}
//
// receive threat for USB EP6 (512 byte USB Ozy frames)
// this function loops reading 4 frames at a time through USB
// then processes them one at a time.
//
static gpointer ozy_ep6_rx_thread(gpointer arg) {
int bytes;
unsigned char buffer[2048];
fprintf(stderr, "protocol1: USB EP6 receive_thread\n");
running=TRUE;
while (running)
{
bytes = ozy_read(EP6_IN_ID,ep6_inbuffer,EP6_BUFFER_SIZE); // read a 2K buffer at a time
if (bytes == 0)
{
fprintf(stderr,"protocol1_ep6_read: ozy_read returned 0 bytes... retrying\n");
continue;
}
else if (bytes != EP6_BUFFER_SIZE)
{
fprintf(stderr,"protocol1_ep6_read: OzyBulkRead failed %d bytes\n",bytes);
perror("ozy_read(EP6 read failed");
//exit(1);
}
else
// process the received data normally
{
process_ozy_input_buffer(&ep6_inbuffer[0]);
process_ozy_input_buffer(&ep6_inbuffer[512]);
process_ozy_input_buffer(&ep6_inbuffer[1024]);
process_ozy_input_buffer(&ep6_inbuffer[1024+512]);
}
}
// terminate
//_exit(0);
}
#endif
static void start_protocol1_thread() {
fprintf(stderr,"protocol1 starting receive thread: buffer_size=%d output_buffer_size=%d\n",radio->buffer_size,output_buffer_size);
switch(radio->discovered->device) {
#ifdef USBOZY
case DEVICE_OZY:
break;
#endif
default:
data_socket=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
if(data_socket<0) {
perror("protocol1: create socket failed for data_socket\n");
exit(-1);
}
int optval = 1;
if(setsockopt(data_socket, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval))<0) {
perror("data_socket: SO_REUSEADDR");
}
if(setsockopt(data_socket, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval))<0) {
perror("data_socket: SO_REUSEPORT");
}
#ifndef __APPLE__
optval = 6;
if(setsockopt(data_socket, SOL_SOCKET, SO_PRIORITY, &optval, sizeof(optval))<0) {
perror("data_socket: SO_PRIORITY");
}
#endif
// bind to the interface
if(bind(data_socket,(struct sockaddr*)&radio->discovered->info.network.interface_address,radio->discovered->info.network.interface_length)<0) {
perror("protocol1: bind socket failed for data_socket\n");
exit(-1);
}
memcpy(&data_addr,&radio->discovered->info.network.address,radio->discovered->info.network.address_length);
data_addr_length=radio->discovered->info.network.address_length;
data_addr.sin_port=htons(DATA_PORT);
break;
}
receive_thread_id = g_thread_new( "protocol1", receive_thread, NULL);
if( ! receive_thread_id )
{
fprintf(stderr,"g_thread_new failed on receive_thread\n");
exit( -1 );
}
fprintf(stderr, "receive_thread: id=%p\n",receive_thread_id);
}
static gpointer receive_thread(gpointer arg) {
struct sockaddr_in addr;
socklen_t length;
unsigned char buffer[2048];
int bytes_read;
int ep;
long sequence;
fprintf(stderr, "protocol1: receive_thread\n");
running=TRUE;
length=sizeof(addr);
while(running) {
switch(radio->discovered->device) {
#ifdef USBOZY
case DEVICE_OZY:
// should not happen
break;
#endif
default:
bytes_read=recvfrom(data_socket,buffer,sizeof(buffer),0,(struct sockaddr*)&addr,&length);
if(bytes_read<0) {
if(errno==EAGAIN) {
error_handler("protocol1: receiver_thread: recvfrom socket failed","Radio not sending data");
} else {
error_handler("protocol1: receiver_thread: recvfrom socket failed",strerror(errno));
}
//running=FALSE;
continue;
}
if(buffer[0]==0xEF && buffer[1]==0xFE) {
switch(buffer[2]) {
case 1:
// get the end point
ep=buffer[3]&0xFF;
// get the sequence number
sequence=((buffer[4]&0xFF)<<24)+((buffer[5]&0xFF)<<16)+((buffer[6]&0xFF)<<8)+(buffer[7]&0xFF);
switch(ep) {
case 6: // EP6
ep6_sequence++;
if(sequence!=ep6_sequence) {
g_print("EP6 ERROR packet %ld pc %ld\n", sequence, ep6_sequence);
ep6_sequence = sequence;
if (radio->hl2 != NULL) radio->hl2->ep6_error_ctr++;
}
// process the data
process_ozy_input_buffer(&buffer[8]);
process_ozy_input_buffer(&buffer[520]);
protocol1_tx_scheduler_monitor();
//if (!radio->hl2->overflow) {
full_tx_buffer(radio->transmitter, FALSE);
//}
//else {
// g_print("O EP6 %ld\n", sequence);
//}
break;
case 4: // EP4
ep4_sequence++;
if(sequence!=ep4_sequence) {
ep4_sequence=sequence;
} else {
//int seq=(int)(sequence%32L);
if((sequence%32L)==0L) {
reset_wideband_buffer_index(radio->wideband);
}
process_wideband_buffer(&buffer[8]);
process_wideband_buffer(&buffer[520]);
}
break;
default:
fprintf(stderr,"unexpected EP %d length=%d\n",ep,bytes_read);
break;
}
break;
case 2: // response to a discovery packet
fprintf(stderr,"unexepected discovery response when not in discovery mode\n");
break;
default:
fprintf(stderr,"unexpected packet type: 0x%02X\n",buffer[2]);
break;
}
} else {
fprintf(stderr,"received bad header bytes on data port %02X,%02X\n",buffer[0],buffer[1]);
}
break;
}
}
fprintf(stderr,"EXIT: protocol1: receive_thread\n");
return NULL;
}
static void process_control_bytes() {
gboolean previous_ptt;
// Unused - commented in case used in future
//gboolean previous_dot;
//gboolean previous_dash;
gint tx_mode = transmitter_get_mode(radio->transmitter);
previous_ptt=radio->local_ptt;
//previous_dot=radio->dot;
//previous_dash=radio->dash;
radio->ptt=(control_in[0]&0x01)==0x01;
radio->dash=(control_in[0]&0x02)==0x02;
radio->dot=(control_in[0]&0x04)==0x04;
radio->local_ptt=radio->ptt;
if ((tx_mode==CWL || tx_mode==CWU) && radio->cw_keyer_internal) {
radio->local_ptt=radio->ptt|radio->dot|radio->dash;
}
if(previous_ptt!=radio->local_ptt) {
g_print("process_control_bytes: ppt=%d dot=%d dash=%d\n",radio->ptt,radio->dot,radio->dash);
g_idle_add(ext_ptt_changed,(gpointer)radio);
}
if (radio->hl2 != NULL) {
gboolean ack = (control_in[0]&0xFF) >> 7;
if (ack) {
// ACK from HL2
HL2i2cProcessReturnValue(radio->hl2, control_in[0], control_in[1],
control_in[2], control_in[3],
control_in[4]);
return;
}
}
switch((control_in[0]>>3)&0x1F) {
case 0:
radio->adc_overload=(control_in[1]&0x01)==0x01;
radio->IO1=(control_in[1]&0x02)==0x02;
radio->IO2=(control_in[1]&0x04)==0x04;
radio->IO3=(control_in[1]&0x08)==0x08;
//HL2 Buffer over/underflow
if (radio->hl2 != NULL) {
//g_print("%d\n", isTransmitting(radio));
//if (!isTransmitting(radio)) {
radio->hl2->overflow = FALSE;
radio->hl2->underflow = FALSE;
//}
if (isTransmitting(radio)) {
int recovery = control_in[3];
if (control_in[3] == 128) g_print("CLICK\n");
recovery = ((control_in[3] & 0xC0) >> 6);
//g_print("recovery %d\n", recovery);
/*
if ((control_in[3]&0x80) == 0x80) {
g_print("Under\n");
g_print("bval %d\n", (int)control_in[3]);
}
if (((control_in[3]&0x80) == 0x80) && ((control_in[3]&0x40) == 0x40)) {
g_print("Over\n");
g_print("bval %d\n", (int)control_in[3]);
}
*/
if (recovery == 3) radio->hl2->overflow = TRUE;
if (recovery == 2) radio->hl2->underflow = TRUE;
int msb = control_in[3];
double fill_level = (double)msb * 16 * 1.0/48 ;
if (fill_level < 5) {
/*
g_print("EP6 %ld\n", ep6_sequence);
g_print("Fill LOW %lf %d%d\n", fill_level, radio->hl2->underflow, radio->hl2->overflow );
g_print("Resize buffer %d\n", radio->hl2->hl2_tx_buffer_size);
*/
/*
if (radio->hl2->hl2_tx_buffer_size < 42) {
radio->hl2->hl2_tx_buffer_size++;
}
*/
//full_tx_buffer(radio->transmitter, TRUE);
//full_tx_buffer(radio->transmitter, TRUE);
full_tx_buffer(radio->transmitter, TRUE);
}
/*
if (fill_level > 42) {
g_print("Fill HIGH %lf %d%d\n", fill_level, radio->hl2->underflow, radio->hl2->overflow );
}
*/
// Did the PTT change because of a buffer underflow?
//if (overflow || underflow) g_print("TX IQ FIFO flag %d%d\n", underflow, overflow );
/*
if (radio->hl2->underflow) {
g_print("--U %lf %ld\n", fill_level, ep6_sequence);
g_print("bval %d\n", (int)control_in[3]);
g_print("recovery %d\n", recovery);
}
if (radio->hl2->overflow) {
g_print("--O %lf\n", fill_level);
g_print("bval %d\n", (int)control_in[3]);
g_print("recovery %d\n", recovery);
}
*/
//if (previous_ptt != radio->ptt) g_print("TX IQ FIFO flag %d%d\n", underflow, overflow );
}
}
if(radio->mercury_software_version!=control_in[2]) {
radio->mercury_software_version=control_in[2];
fprintf(stderr," Mercury Software version: %d (0x%0X)\n",radio->mercury_software_version,radio->mercury_software_version);
}
if(radio->penelope_software_version!=control_in[3]) {
radio->penelope_software_version=control_in[3];
if(radio->discovered->device!=DEVICE_HERMES_LITE2) {
fprintf(stderr," Penelope Software version: %d (0x%0X)\n",radio->penelope_software_version,radio->penelope_software_version);
}
}
if(radio->ozy_software_version!=control_in[4]) {
radio->ozy_software_version=control_in[4];
fprintf(stderr,"FPGA firmware version: %d.%d\n",radio->ozy_software_version/10,radio->ozy_software_version%10);
}
break;
case 1:
radio->transmitter->exciter_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Penelope or Hermes
int adc = ((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF);
double this_temperature = (3.26 * ((double)adc/4096.0) - 0.5) / 0.01;
// Exponential moving average filter
double alpha = 0.7;
radio->transmitter->temperature = (alpha * this_temperature) + (1 - alpha) * radio->transmitter->temperature;
radio->transmitter->alex_forward_power=((control_in[3]&0xFF)<<8)|(control_in[4]&0xFF); // from Alex or Apollo
break;
case 2:
radio->transmitter->alex_reverse_power=((control_in[1]&0xFF)<<8)|(control_in[2]&0xFF); // from Alex or Apollo
radio->AIN3=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
case 3:
radio->AIN4=(control_in[1]<<8)+control_in[2]; // from Pennelope or Hermes
radio->AIN6=(control_in[3]<<8)+control_in[4]; // from Pennelope or Hermes
break;
}
}
static int nreceiver;
static int left_sample;
static int right_sample;
static short mic_sample;
static double left_sample_double;
static double right_sample_double;
static double fbk_left_sample_double;
static double fbk_right_sample_double;
static int nsamples;
static int iq_samples;
static void process_ozy_byte(int b) {
int i,j;
switch(state) {
case SYNC_0:
if(b==SYNC) {
state++;
}
break;
case SYNC_1:
if(b==SYNC) {
state++;
}
break;
case SYNC_2:
if(b==SYNC) {
state++;
}
break;
case CONTROL_0:
control_in[0]=b;
state++;
break;
case CONTROL_1:
control_in[1]=b;
state++;
break;
case CONTROL_2:
control_in[2]=b;
state++;
break;
case CONTROL_3:
control_in[3]=b;
state++;
break;
case CONTROL_4:
control_in[4]=b;
process_control_bytes();
nreceiver=0;
iq_samples=(512-8)/((radio->receivers*6)+2);
nsamples=0;
state++;
break;
case LEFT_SAMPLE_HI:
left_sample=(int)((signed char)b<<16);
state++;
break;
case LEFT_SAMPLE_MID:
left_sample|=(int)((((unsigned char)b)<<8)&0xFF00);
state++;
break;
case LEFT_SAMPLE_LOW:
left_sample|=(int)((unsigned char)b&0xFF);
left_sample_double=(double)left_sample/8388607.0; // 24 bit sample 2^23-1
state++;
break;
case RIGHT_SAMPLE_HI:
right_sample=(int)((signed char)b<<16);
state++;
break;
case RIGHT_SAMPLE_MID:
right_sample|=(int)((((unsigned char)b)<<8)&0xFF00);
state++;
break;
case RIGHT_SAMPLE_LOW:
right_sample|=(int)((unsigned char)b&0xFF);
right_sample_double=(double)right_sample/8388607.0; // 24 bit sample 2^23-1
//find receiver
i=-1;
for(j=0;j<radio->discovered->supported_receivers;j++) {
if(radio->receiver[j]!=NULL) {
i++;
if(i==nreceiver) break;
}
}
#ifdef PURESIGNAL
if (isTransmitting(radio) && (radio->transmitter->puresignal != NULL)
&& (( nreceiver == radio->discovered->ps_tx_fdbk_chan)
|| (nreceiver == radio->discovered->ps_tx_fdbk_chan - 1))) {
if (nreceiver == (radio->discovered->ps_tx_fdbk_chan - 1)) {
fbk_left_sample_double = left_sample_double;
fbk_right_sample_double = right_sample_double;
} else {
// Must be pre-DAC TX feedback
if (nreceiver != 3) g_print("RX %i: add ps samples\n", nreceiver);
add_ps_iq_samples(radio->transmitter, left_sample_double, right_sample_double, fbk_left_sample_double, fbk_right_sample_double);
}
}
else if(radio->receiver[j]!=NULL) {
#else
if(radio->receiver[j]!=NULL) {
#endif
g_mutex_lock(&radio->delete_rx_mutex);
add_iq_samples(radio->receiver[j], left_sample_double,right_sample_double);
g_mutex_unlock(&radio->delete_rx_mutex);
}
nreceiver++;
if(nreceiver==radio->receivers) {
state++;
} else {
state=LEFT_SAMPLE_HI;
}
break;
case MIC_SAMPLE_HI:
mic_sample=(short)(b<<8);
state++;
break;
case MIC_SAMPLE_LOW:
mic_sample|=(short)(b&0xFF);
if(!radio->local_microphone) {
mic_samples++;
if(mic_samples>=mic_sample_divisor) { // reduce to 48000
add_mic_sample(radio->transmitter,(float)mic_sample/32768.0);
mic_samples=0;
}
}
nsamples++;
if(nsamples==iq_samples) {
state=SYNC_0;
} else {
nreceiver=0;
state=LEFT_SAMPLE_HI;
}
break;
}
}
static void process_ozy_input_buffer(unsigned char *buffer) {
int i;
if(radio->receivers>0) {
for(i=0;i<512;i++) {
process_ozy_byte(buffer[i]&0xFF);
}
}
}
// Send rx audio back to radio
void protocol1_audio_samples(RECEIVER *rx,short left_audio_sample,short right_audio_sample) {
if(!isTransmitting(radio)) {
// if(rx->mixed_audio==0) {
rx->mixed_left_audio=left_audio_sample;
rx->mixed_right_audio=right_audio_sample;
// } else {
// rx->mixed_left_audio+=left_audio_sample;
// rx->mixed_right_audio+=right_audio_sample;
// }
// rx->mixed_audio++;
// if(rx->mixed_audio>=radio->receivers) {
output_buffer[output_buffer_index++]=rx->mixed_left_audio>>8;
output_buffer[output_buffer_index++]=rx->mixed_left_audio;
output_buffer[output_buffer_index++]=rx->mixed_right_audio>>8;
output_buffer[output_buffer_index++]=rx->mixed_right_audio;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
output_buffer[output_buffer_index++]=0;
if(output_buffer_index>=OZY_BUFFER_SIZE) {
ozy_send_buffer();
output_buffer_index=8;
}
// rx->mixed_audio=0;
// }
}
}
void protocol1_iq_samples(int isample,int qsample) {
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=0;
output_buffer[tx_output_buffer_index++]=isample>>8;
output_buffer[tx_output_buffer_index++]=isample;
output_buffer[tx_output_buffer_index++]=qsample>>8;
output_buffer[tx_output_buffer_index++]=qsample;
if(tx_output_buffer_index>=OZY_BUFFER_SIZE) {
tx_output_buffer_index=8;
ozy_send_buffer();
}
//}
}
void protocol1_eer_iq_samples(int isample,int qsample,int lasample,int rasample) {
if(isTransmitting(radio)) {
output_buffer[output_buffer_index++]=lasample>>8;
output_buffer[output_buffer_index++]=lasample;
output_buffer[output_buffer_index++]=rasample>>8;
output_buffer[output_buffer_index++]=rasample;
output_buffer[output_buffer_index++]=isample>>8;
output_buffer[output_buffer_index++]=isample;
output_buffer[output_buffer_index++]=qsample>>8;
output_buffer[output_buffer_index++]=qsample;
if(output_buffer_index>=OZY_BUFFER_SIZE) {
ozy_send_buffer();
output_buffer_index=8;
}
}
}
// Microphone buffer dump called from audio.c
void protocol1_process_local_mic(RADIO *r) {
int i;
for(i=0;i<r->local_microphone_buffer_size;i++) {
add_mic_sample(r->transmitter,r->local_microphone_buffer[i]);
}
}
double read_time_now(void) {
struct timespec thiscall;
clock_gettime(CLOCK_MONOTONIC, &thiscall);
// Calculate time it took
// TODO sort out sec and nsec units to accurately compare time (at the moment wrap around on nsec causes problems)
double this_time = (double)thiscall.tv_sec + (double)(thiscall.tv_nsec / CLOCK_PRECISION);
return this_time;
}
static void protocol1_tx_scheduler_monitor(void) {
// Calculate time gap between packets received from p1 radio
// TODO sort out sec and nsec units to accurately compare time (at the moment wrap around on nsec causes problems)
double this_time = read_time_now();
radio->protocol1_timer = 1E3 * (this_time - last_time);
last_time = this_time;
if (radio->hl2 != NULL) {
if (radio->protocol1_timer > 20) {
g_print( "tdiff %lf\n", radio->protocol1_timer);
radio->hl2->late_packets++;
}
}
}
static void process_wideband_buffer(unsigned char *buffer) {
int i;
short sample;
double sampledouble;
for(i=0;i<512;i+=2) {
sample = (short) ((buffer[i + 1] << 8) + (buffer[i] & 0xFF));
sampledouble=(double)sample/32767.0;
if(radio->wideband!=NULL) {
add_wideband_sample(radio->wideband, sampledouble);
}
}
}
void ozy_send_buffer() {
int i,j;
int count;
BAND *band;
int nreceivers;
RECEIVER *tx_receiver;
output_buffer[SYNC0]=SYNC;
output_buffer[SYNC1]=SYNC;
output_buffer[SYNC2]=SYNC;
// Multiple synchronised HL2s. Only send command to the primary HL2 (unless we
// specificy a specific HL2 later)
//if ((radio->hl2 != NULL) && (radio->diversity_mixers > 0)) {
// output_buffer[SYNC2] = HL2_SYNC_MASK_PRIMARY;
//}
output_buffer[C0]=0x00;
output_buffer[C1]=0x00;
output_buffer[C2]=0x00;
output_buffer[C3]=0x00;
output_buffer[C4]=0x00;
if(metis_offset==8) {
output_buffer[C0]=0x00;
output_buffer[C1]=0x00;
switch(radio->sample_rate) {
case 48000:
output_buffer[C1]|=SPEED_48K;
break;
case 96000:
output_buffer[C1]|=SPEED_96K;
break;
case 192000:
output_buffer[C1]|=SPEED_192K;
break;
case 384000:
output_buffer[C1]|=SPEED_384K;
break;
}
// set more bits for Atlas based device
// CONFIG_BOTH seems to be critical to getting ozy to respond
#ifdef USBOZY
if ((radio->discovered->device == DEVICE_OZY) || (radio->discovered->device == DEVICE_METIS))
#else
if (radio->discovered->device == DEVICE_METIS)
#endif
{
if (radio->atlas_mic_source) output_buffer[C1] |= PENELOPE_MIC;
output_buffer[C1] |= CONFIG_BOTH;
if (radio->atlas_clock_source_128mhz) output_buffer[C1] |= MERCURY_122_88MHZ_SOURCE;
output_buffer[C1] |= ((radio->atlas_clock_source_10mhz & 3) << 2);
}
output_buffer[C2]=0x00;
if(radio->classE) {
output_buffer[C2]|=0x01;
}
if(radio->transmitter->rx!=NULL) {
band=band_get_band(radio->transmitter->rx->band_a);
if(isTransmitting(radio)) {
#ifdef USE_VFO_B_MODE_AND_FILTER
if(radio->transmitter->rx->split) {
band=band_get_band(radio->transmitter->rx->band_b);
}
#endif
output_buffer[C2]|=band->OCtx<<1;
if(radio->tune) {
if(radio->OCmemory_tune_time!=0) {
struct timeval te;
gettimeofday(&te,NULL);
long long now=te.tv_sec*1000LL+te.tv_usec/1000;
if(radio->tune_timeout>now) {
output_buffer[C2]|=radio->oc_tune<<1;
}
} else {
// SM4VEY
// output_buffer[C2]|=radio->oc_tune<<1;
}
}
} else {
//Rx
output_buffer[C2]|=band->OCrx<<1;
}
}
// TODO - add Alex Attenuation and Alex Antenna
output_buffer[C3]=0x00;
// Hermes Lite 2 FPGA PSU clock toggle
if(radio->hl2 != NULL) {
if (radio->hl2->psu_clk == FALSE) {
output_buffer[C3]|=LT2208_RANDOM_ON;
}
}
else {
if(radio->adc[0].random) {
output_buffer[C3]|=LT2208_RANDOM_ON;
}
}
if(radio->adc[0].dither) {
output_buffer[C3]|=LT2208_DITHER_ON;
}
if(radio->adc[0].preamp) {
output_buffer[C3]|=LT2208_GAIN_ON;
}
switch(radio->adc[0].antenna) {
case 0: // ANT 1
break;
case 1: // ANT 2
break;
case 2: // ANT 3
break;