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Flex.cpp
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// Flex.cpp
//
// This file uses the following functions:
//
// FLEX::FLEX()
// FLEX::~FLEX()
// int FLEX::xsumchk(long int l)
// void FLEX::show_addr(long int l)
// void FLEX::show_addr(long int l1, long int l2)
// void FLEX::show_phase_speed(int vt)
// void FLEX::showframe(int asa, int vsa)
// void FLEX::showblock(int blknum)
// void FLEX::showword(int wordnum)
// void FLEX::showwordhex(int wordnum)
// void frame_flex(char gin)
#ifndef STRICT
#define STRICT 1
#endif
#include <windows.h>
#include "headers\pdw.h"
#include "headers\sound_in.h"
#include "headers\misc.h"
#include "headers\helper_funcs.h"
#include "headers\initapp.h"
#include "utils\debug.h"
#define min(a,b) (((a) < (b)) ? (a) : (b))
#define max(a,b) (((a) > (b)) ? (a) : (b))
#define MODE_SECURE 0
#define MODE_SHORT_INSTRUCTION 1
#define MODE_SH_TONE 2
#define MODE_STNUM 3
#define MODE_SFNUM 4
#define MODE_ALPHA 5
#define MODE_BINARY 6
#define MODE_NUNUM 7
//#define SYNC0 0x870C
#define SYNC1 0xA6C6
#define SYNC2 0xAAAA
//#define SYNC3 0x78F3
#define EOT1 0xAAAA
#define EOT2 0xFFFF
int flex_blk = 0;
int flex_bc = 0;
extern PROFILE Profile; // profile information
extern PaneStruct Pane1;
extern PaneStruct Pane2;
long int capcode;
int FlexTempAddress; // PH: Set to corresponding groupaddress (0-15)
int FLEX_9=0; // PH: Set if receiving 9-digit capcodes
bool bEmpty_Frame; // PH: Set if FLEX-Frame=EMTPY / ERMES-Batch=0
bool bFLEX_groupmessage; // PH: Set if receiving a groupmessage (2029568-2029583)
bool bFLEX_Frame_contains_SI; // PH: Set if this frame contains Short instructions
bool bFlexTIME_detected=false; // PH: Set if FlexTIME is detected
bool bFlexTIME_not_used=false; // PH: Set if FlexTIME is not used on this network
SYSTEMTIME recFlexTime, recTmpTime;
FILE *pFlexTIME = NULL;
extern int flex_timer;
extern int iCurrentFrame; // current flex cycle
extern int iCurrentCycle; // current flex frame
extern char ob[32];
extern bool bFlexActive, bReflex;
char vtype[8][9]={"SECURE ", " INSTR ", "SH/TONE", " StNUM ",
" SfNUM ", " ALPHA ", "BINARY ", " NuNUM "};
int flex_speed = STAT_FLEX1600;
int g_sps=1600;
int g_sps2=1600;
int level=2;
int syncs[8] = { 0x870C, 0x7B18, 0xB068, 0xDEA0, 0, 0, 0, 0x4C7C };
//int syncs[8] = { 0x870C, 0x7B18, 0xB068, 0xDEA0, 0x22B4, 0xE9C4, 0x4C7C, 0x34DF };
char phase;
FLEX::FLEX()
{
}
FLEX::~FLEX()
{
}
// Reset routine called when changing data mode or if
// switching between soundcard & serial port input.
void flex_reset(void)
{
flex_blk = 0;
flex_bc = 0;
flex_timer = 0;
bReflex = false;
bFlexActive = false;
}
// checksum check for BIW and vector type words
// returns: 0 if word passes test; 1 if test failed
int FLEX::xsumchk(long int l)
{
// was word already marked as bad?
if (l > 0x3fffffl) return(1);
// 4 bit checksum is made by summing up remaining part of word
// in 4 bit increments, and taking the 4 lsb and complementing them.
// Therefore: if we add up the whole word in 4 bit chunks the 4 lsb
// bits had better come out to be 0x0f
int xs = (int) (l & 0x0f);
xs += (int) ((l>> 4) & 0x0f);
xs += (int) ((l>> 8) & 0x0f);
xs += (int) ((l>>12) & 0x0f);
xs += (int) ((l>>16) & 0x0f);
xs += (int) ((l>>20) & 0x01);
xs = xs & 0x0f;
if (xs == 0x0f)
{
CountBiterrors(0);
return(0);
}
else
{
CountBiterrors(1);
return(1);
}
}
// converts a short flex address to a CAPCODE; shows it on screen
void FLEX::show_address(long int l, long int l2, bool bLongAddress)
{
int len = bLongAddress ? FILTER_CAPCODE_LEN : FILTER_CAPCODE_LEN-2;
if (!bLongAddress)
{
capcode = (l & 0x1fffffl) - 32768l;
if (FLEX_9) FLEX_9--;
}
else
{
// to get capcode: take second word, invert it...
capcode = (l2 & 0x1fffffl) ^ 0x1fffffl;
// multiply by 32768
capcode = capcode << 15;
// add in 2068480 and first word
// NOTE : in the patent for FLEX, the number given was 2067456...
// which is apparently not correct
capcode = capcode + 2068480l + (l & 0x1fffffl);
if (FLEX_9 < 91) FLEX_9 += 10;
}
// capcode is bad if it was derived from a word with uncorrectable
// errors or if it is less than zero
if ((l > 0x3fffffl) || (l2 > 0x3fffffl) || (capcode < 0))
{
strcpy(Current_MSG[MSG_CAPCODE], bLongAddress ? "?????????" : "???????");
capcode=9999999;
CountBiterrors(5);
}
else // OK here!
{
sprintf(Current_MSG[MSG_CAPCODE], bLongAddress ? "%09li" : "%07li", capcode);
CountBiterrors(0);
}
if (Profile.convert_si && (capcode >= 2029568) && (capcode <= 2029583))
{
bFLEX_groupmessage=true;
}
else bFLEX_groupmessage=false;
/* Show Capcode */
messageitems_colors[1] = COLOR_ADDRESS;
/* Show Time/Date */
Get_Date_Time();
strcpy(Current_MSG[MSG_TIME], szCurrentTime);
strcpy(Current_MSG[MSG_DATE], szCurrentDate);
messageitems_colors[2] = COLOR_TIMESTAMP;
messageitems_colors[3] = COLOR_TIMESTAMP;
}
/**************************/
// Return current bit rate based on flex_speed.
void FLEX::show_phase_speed(int vt)
{
int v;
switch(flex_speed) // Add Bit Rate
{
default:
case STAT_FLEX1600: v=1600;
break;
case STAT_FLEX3200: v=3200;
break;
case STAT_FLEX6400: v=6400;
break;
}
/* Show FLEX-# */
messageitems_colors[4] = COLOR_MODETYPEBIT;
sprintf(Current_MSG[MSG_MODE], "FLEX-%c", phase);
/* Show Type */
messageitems_colors[5] = COLOR_MODETYPEBIT;
if (vt == MODE_SHORT_INSTRUCTION && Profile.convert_si)
{
strcpy(Current_MSG[MSG_TYPE], " GROUP "); // PH: Add "GROUP" in stead of "INSTR"
}
else
{
strcpy(Current_MSG[MSG_TYPE], vtype[vt]); // Add flex format.
}
/* Show Bitrate */
messageitems_colors[6] = COLOR_MODETYPEBIT;
sprintf(Current_MSG[MSG_BITRATE], "%d", v);
}
/*
void FLEX::CheckFlexTime(void)
{
SYSTEMTIME recSystemTime;
time_t lPCTime, lFlexTime;
GetLocalTime(&recSystemTime);
lPCTime = recSystemTime.wHour * 3600 + recSystemTime.wMinute * 60 + recSystemTime.wSecond;
lFlexTime = recFlexTime.wHour * 3600 + recFlexTime.wMinute * 60 + recFlexTime.wSecond;
lPCTime = abs(lPCTime - lFlexTime);
if(recFlexTime.wYear != recSystemTime.wYear || recFlexTime.wMonth != recSystemTime.wMonth || recFlexTime.wDay != recSystemTime.wDay || lPCTime > 2)
{
OUTPUTDEBUGMSG((("TIME OUT OF SYNC! (%d seconds) \n"), lPCTime));
SetLocalTime(&recFlexTime);
if (pFlexTIME) fwrite(" Systemtime has been corrected!", 31, 1, pFlexTIME);
}
}
*/
void FLEX::FlexTIME()
{
if (strstr(szPath, "DEBUG")) return;
int i;
char temp[MAX_PATH];
char szFlexTIME[128];
float frame_seconds= (iCurrentFrame & 0x1f) * 1.875;
int seconds = frame_seconds;
static int FLEX_time=0, FLEX_date=0, count=0;
bool bTime = false, bDate = false;
// OUTPUTDEBUGMSG((("Frame[0] = 0x%08X\n"), frame[0]));
// OUTPUTDEBUGMSG((("Priority addresses %d\n"), (frame[0] >> 4) & 0xF));
// OUTPUTDEBUGMSG((("End Block %d\n"), (frame[0] >> 8) & 0x3));
// OUTPUTDEBUGMSG((("Vector %d\n"), (frame[0] >> 10) & 0x7));
// OUTPUTDEBUGMSG((("Frame Id %d\n"), (frame[0] >> 16) & 0x7));
for (i=0; i<=((frame[0] >> 8) & 0x03); i++)
{
if(xsumchk(frame[i]) != 0)
{
// OUTPUTDEBUGMSG((("CRC error in BIW[%d]! (0x%08X)\n"), i, frame[i]));
return;
}
if(i)
{
switch((frame[i] >> 4) & 0x07)
{
case 0:
// OUTPUTDEBUGMSG((("frame[i]: Type == SSID/Local ID’s (i8-i0)(512) & Coverage Zones (c4-c0)(32)\n")));
break;
case 1:
frame[i] >>= 7;
recFlexTime.wYear = (frame[i] & 0x1F) + 1994;
frame[i] >>= 5;
recFlexTime.wDay = frame[i] & 0x1F;
frame[i] >>= 5;
recFlexTime.wMonth = (frame[i] & 0xF);
bDate = true;
FLEX_date=1;
// OUTPUTDEBUGMSG((("BIW DATE: %d-%d-%d\n"), recFlexTime.wDay, recFlexTime.wMonth, recFlexTime.wYear));
break;
case 2:
frame[i] >>= 7;
recFlexTime.wHour = frame[i] & 0x1F;
frame[i] >>= 5;
recFlexTime.wMinute = frame[i] & 0x3F;
frame[i] >>= 6;
recFlexTime.wSecond = seconds;
bTime = true;
FLEX_time=1;
// OUTPUTDEBUGMSG((("BIW TIME: %02d:%02d:%02d\n"), recFlexTime.wHour, recFlexTime.wMinute, recFlexTime.wSecond));
break;
case 5:
// OUTPUTDEBUGMSG((("frame[i]: Type == System Information (I9-I0. A3-A0) - related to NID roaming\n")));
break;
case 7:
// OUTPUTDEBUGMSG((("frame[i]: Type == Country Code & Traffic Management Flags (c9-c0, T3-T0)\n")));
break;
case 6:
case 3:
case 4:
// OUTPUTDEBUGMSG((("frame[i]: Type == Reserved\n")));
break;
}
}
}
if (FLEX_time && FLEX_date && !bFlexTIME_detected) bFlexTIME_detected = true;
if (iCurrentFrame == 0)
{
count++;
if (count == 15 && !bFlexTIME_detected) bFlexTIME_not_used = true;
else if (Profile.FlexTIME)
{
if (bTime || bDate)
{
if (bTime)
{
GetLocalTime(&recTmpTime);
recTmpTime.wHour = recFlexTime.wHour;
recTmpTime.wMinute = recFlexTime.wMinute;
recTmpTime.wSecond = recFlexTime.wSecond;
recTmpTime.wMilliseconds = 0;
SetLocalTime(&recTmpTime);
}
if (bDate)
{
GetLocalTime(&recTmpTime);
recTmpTime.wDay = recFlexTime.wDay;
recTmpTime.wMonth = recFlexTime.wMonth;
recTmpTime.wYear = recFlexTime.wYear;
SetLocalTime(&recTmpTime);
}
}
}
}
}
// This routine is called when a complete phase of information is collected.
// First, the BIW is used to determine the length of the address and vector field blocks.
// Each address field is then processed according to the information in the vector field.
void FLEX::showframe(int asa, int vsa)
{
int vb, vt, tt, w1, w2, j, k, l, m, n=0, i, c=0;
long int cc, cc2, cc3;
bool bLongAddress=false, bXsumError=false;
int iFragmentNumber, iAssignedFrame;
int iContinuation;
extern unsigned long hourly_stat[NUM_STAT][2];
extern unsigned long hourly_char[NUM_STAT][2];
extern unsigned long daily_stat[NUM_STAT][2];
extern unsigned long daily_char[NUM_STAT][2];
char szTemp[128];
extern char szWindowText[6][1000];
FlexTempAddress = -1; // PH: Current temporary address(bit)
if (xsumchk(frame[0]) == 0) // make sure we start out with valid BIW
{
for (j=asa; j<vsa; j++, c=0, bLongAddress=false, bXsumError=false) // run through whole address field
{
cc2 = frame[j] & 0x1fffffl; // Check if this can be the low part of a long address
// check for long addresses (bLongAddress indicates long address)
if (cc2 < 0x008001l) bLongAddress=true;
else if ((cc2 > 0x1e0000l) && (cc2 < 0x1f0001l)) bLongAddress=true;
else if (cc2 > 0x1f7FFEl) bLongAddress=true;
vb = vsa + j - asa; // this is the vector word number associated with the address word j
vt = (frame[vb] >> 4) & 0x07; // get message vector type
if (xsumchk(frame[vb]) != 0)
{
continue; // screwed up vector fields are not processed
}
if (Profile.FlexGroupMode && bLongAddress)
{
continue; // Don't process long addresses if FlexGroupMode
}
strcpy(szWindowText[4], "");
switch(vt)
{
case MODE_ALPHA:
case MODE_SECURE:
show_address(frame[j], frame[j+1], bLongAddress); // show address
show_phase_speed(vt);
// get start and stop word numbers
w1 = frame[vb] >> 7;
w2 = w1 >> 7;
w1 = w1 & 0x7f;
w2 = (w2 & 0x7f) + w1 - 1;
// get message fragment number (bits 11 and 12) from first header word
// if != 3 then this is a continued message
if (!bLongAddress)
{
iFragmentNumber = (int) (frame[w1] >> 11) & 0x03;
iContinuation = (int) (frame[w1] >> 10) & 0x01;
w1++;
}
else
{
iFragmentNumber = (int) (frame[vb+1] >> 11) & 0x03;
iContinuation = (int) (frame[vb+1] >> 10) & 0x01;
w2--;
}
for (k=w1; k<=w2; k++) // dump all message characters onto screen
{
if (frame[k] > 0x3fffffl) display_color(&Pane1, COLOR_BITERRORS);
else display_color(&Pane1, COLOR_MESSAGE);
// skip over header info (depends on fragment number)
if ((k > w1) || (iFragmentNumber != 0x03))
{
c = (int) frame[k] & 0x7fl;
if (c != 0x03)
{
display_show_char(&Pane1, c);
hourly_char[flex_speed][STAT_ALPHA]++;
daily_char [flex_speed][STAT_ALPHA]++;
}
}
cc = (long) frame[k] >> 7;
c = (int) cc & 0x7fl;
if (c != 0x03)
{
display_show_char(&Pane1, c);
hourly_char[flex_speed][STAT_ALPHA]++;
daily_char [flex_speed][STAT_ALPHA]++;
}
cc = (long) frame[k] >> 14;
c = (int) cc & 0x7fl;
if (c != 0x03)
{
display_show_char(&Pane1, c);
hourly_char[flex_speed][STAT_ALPHA]++;
daily_char [flex_speed][STAT_ALPHA]++;
}
}
if (iFragmentNumber < 3) // Change last 0 of bitrate into fragmentnumber
{
Current_MSG[MSG_BITRATE][3] = '1';
}
if (iContinuation > 0) // change second to last 0 of bitrate in to continuation number
{
Current_MSG[MSG_BITRATE][2] = '1';
}
hourly_stat[flex_speed][STAT_ALPHA]++;
daily_stat [flex_speed][STAT_ALPHA]++;
break;
case MODE_SHORT_INSTRUCTION:
// RAH/PH: Short instruction for temporary address in group messaging
if (!Profile.showinstr) continue;
if (Profile.convert_si) bFLEX_Frame_contains_SI = true;
strcpy(szWindowText[4], "Groupcall");
show_address(frame[j], frame[j+1], bLongAddress); // show address
if (bFLEX_groupmessage) continue;
show_phase_speed(vt);
iAssignedFrame = (frame[vb] >> 10) & 0x7f; // Frame with groupmessage
FlexTempAddress = (frame[vb] >> 17) & 0x7f; // Listen to this groupcode
if (!Profile.convert_si)
{
display_color(&Pane1, COLOR_INSTRUCTIONS);
display_show_str(&Pane1, "TEMPORARY ADDRESS");
w1 = (frame[vb] >> 7) & 0x3; // See page 90 and 107
if (w1 == 0) display_show_str(&Pane1, ": ");
else if (w1 == 7) display_show_str(&Pane1, " (TEST): ");
else display_show_str(&Pane1, " (RESERVED): ");
sprintf(szTemp, "%07li -> FRAME %03i", FlexTempAddress+2029568, iAssignedFrame);
display_show_str(&Pane1, szTemp);
}
break;
case MODE_STNUM:
case MODE_SFNUM:
case MODE_NUNUM:
// standard / special format numeric / numbered numeric message
if (!Profile.shownumeric) continue;
show_address(frame[j], frame[j+1], bLongAddress); // show address
show_phase_speed(vt);
w1 = frame[vb] >> 7;
w2 = w1 >> 7;
w1 = w1 & 0x7f;
w2 = (w2 & 0x07) + w1; // numeric message is 7 words max
if (!bLongAddress) // load first message word into cc
{
cc = frame[w1]; // if short adress first message word @ w1
w1++;
w2++;
}
else cc = frame[vb+1]; // long address - first message word in second vector field
// skip over first 10 bits for numbered numeric, otherwise skip first 2
if (vt == 7) m = 14;
else m = 6;
for (k=w1; k<=w2; k++)
{
if (cc < 0x400000l) display_color(&Pane1, COLOR_NUMERIC);
else display_color(&Pane1, COLOR_BITERRORS);
for (l=0; l<21; l++)
{
c = c >> 1;
if ((cc & 0x01) != 0l) c ^= 0x08;
cc = cc >> 1;
m--;
if (m == 0)
{
display_show_char(&Pane1, aNumeric[c & 0x0f]);
hourly_char[flex_speed][STAT_NUMERIC]++;
daily_char [flex_speed][STAT_NUMERIC]++;
m = 4;
}
}
cc = (long) frame[k];
}
hourly_stat[flex_speed][STAT_NUMERIC]++;
daily_stat [flex_speed][STAT_NUMERIC]++;
break;
case MODE_SH_TONE:
tt = (frame[vb] >> 7) & 0x03; // message type
if ((Profile.showtone && tt) || (Profile.shownumeric && !tt))
{
show_address(frame[j], frame[j+1], bLongAddress); // show address
show_phase_speed(vt);
display_color(&Pane1, COLOR_NUMERIC);
if (tt)
{
display_show_str(&Pane1, "TONE-ONLY");
}
else // short numeric (3 or 8 numeric chars)
{
for (i=9; i<=17; i+=4)
{
cc = (frame[vb] >> i) & 0x0f;
display_show_char(&Pane1, aNumeric[cc]);
}
hourly_char[flex_speed][STAT_NUMERIC] += 3;
daily_char [flex_speed][STAT_NUMERIC] += 3;
if (bLongAddress) // long addresses have 2 vector words...
{
for (i=0; i<=16; i+=4)
{
cc = (frame[vb+1] >> i) & 0x0f;
display_show_char(&Pane1, aNumeric[cc]);
}
hourly_char[flex_speed][STAT_NUMERIC] += 4;
daily_char [flex_speed][STAT_NUMERIC] += 4;
}
}
hourly_stat[flex_speed][STAT_NUMERIC]++;
daily_stat [flex_speed][STAT_NUMERIC]++;
}
else continue;
break;
case MODE_BINARY:
if (!Profile.showmisc) continue;
show_address(frame[j], frame[j+1], bLongAddress); // show address
show_phase_speed(vt);
w1 = frame[vb] >> 7;
w2 = w1 >> 7;
w1 = w1 & 0x7f;
w2 = (w2 & 0x7f) + w1 - 1;
if (!bLongAddress)
{
iFragmentNumber = (int) (frame[w1] >> 13) & 0x03;
if (iFragmentNumber == 3) w1+=2;
else w1++;
}
else
{
iFragmentNumber = (int) (frame[vb+1] >> 13) & 0x03;
if (iFragmentNumber == 3) w1++;
w2--;
}
display_color(&Pane1, COLOR_MISC);
for (k=w1, n=0, m=0; k<=w2; k++)
{
cc3 = frame[k];
for (l=0; l<21; l++)
{
m = m >> 1;
if ((cc3 & 0x01l) != 0) m = m ^ 0x08;
cc3 = cc3 >> 1;
n++;
if (n == 4)
{
if (m < 10) display_show_char(&Pane1, 48+m);
else display_show_char(&Pane1, 55+m);
n=0, m=0;
}
}
}
break;
}
if (Profile.convert_si && ((vt == MODE_SHORT_INSTRUCTION) || bFLEX_groupmessage))
{
if (bFLEX_groupmessage)
{
ConvertGroupcall(capcode-2029568, vtype[vt], capcode);
}
else AddAssignment(iAssignedFrame, FlexTempAddress, capcode);
}
else ShowMessage();
if (bLongAddress) j++; // if long address then make sure we skip over both parts
}
Check4_MissedGroupcalls(); // At this point, no more addresses/messages should follow, so check for missed groupcalls
}
} // Reset for new message.
// format a received frame
void FLEX::showblock(int blknum)
{
int j, k, err, asa, vsa;
long int cc;
static int last_frame;
bool bNoMoreData=false; // Speed up frame processing
for (int i=0; i<8; i++) // format 32 bit frame into output buffer to do error correction
{
for (j=0; j<32; j++)
{
k = (j*8) + i;
ob[j] = block[k];
}
err = ecd(); // do error correction
CountBiterrors(err);
k = (blknum << 3) + i;
cc = 0x0000l;
for (j=0; j<21; j++)
{
cc = cc >> 1;
if (ob[j] == 0) cc ^= 0x100000l;
}
if (err == 3) cc ^= 0x400000l; // flag uncorrectable errors
frame[k] = cc;
}
if ((flex_speed == STAT_FLEX1600) && ((cc == 0x0000l) || (cc == 0x1fffffl)))
{
bNoMoreData=true; // Speed up frame processing
}
vsa = (int) ((frame[0] >> 10) & 0x3f); // get word where vector field starts (6 bits)
asa = (int) ((frame[0] >> 8) & 0x03) + 1; // get word where address field starts (2 bits)
if (blknum == 0)
{
if (vsa == asa) // PH: Assuming no messages in current frame,
{
bEmpty_Frame=true;
}
else
{
bEmpty_Frame=false;
}
if (!bFlexTIME_detected && !bFlexTIME_not_used)
{
FlexTIME();
}
else if ((iCurrentFrame == 0) && (last_frame == 127))
{
if (Profile.FlexTIME)
{
FlexTIME();
}
}
last_frame = iCurrentFrame;
}
// show messages in frame if last block was processed and we're not in reflex mode
else if (((blknum == 10) || bNoMoreData) && !bReflex)
{
showframe(asa, vsa);
if (bNoMoreData) flex_blk=1;
}
}
// displays given three character word... used when displaying a
// REFLEX message where the characters are spread over multiple phases.
void FLEX::showword(int wordnum)
{
int c;
long int cc = (long) frame[wordnum];
if (cc > 0x200000l) display_color(&Pane1, COLOR_BITERRORS);
else display_color(&Pane1, COLOR_MESSAGE);
if ((cc != 0x0000l) && (cc != 0x1fffffl))
{
c = (int) cc & 0x7fl;
display_show_char(&Pane1, c);
cc = (long) frame[wordnum] >> 7;
c = (int) cc & 0x7fl;
display_show_char(&Pane1, c);
cc = (long) frame[wordnum] >> 14;
c = (int) cc & 0x7fl;
display_show_char(&Pane1, c);
}
}
void FLEX::showwordhex(int wordnum)
{
display_show_char(&Pane1, '[');
display_show_hex21(&Pane1, frame[wordnum]);
display_show_char(&Pane1, ']');
}
void frame_flex(char gin)
{
int cer, ihd, i, nh, j, hd=0, reflex_flag=0; // te
static int cy, fr;
static short int slr[4] = { 0, 0, 0, 0 };
static int bct, hbit;
double aver=0.0;
extern double rcver[65];
extern double exc;
extern double ct1600, ct3200, ct_bit;
extern double rcv_clkt;
extern double rcv_clkt_hi;
extern double rcv_clkt_fl;
// unsigned int sup[4] = { 0x870C, 0xA6C6, 0xAAAA, 0x78F3 }; // Main (1600) sync-code
char sync[64];
extern FLEX phase_A, phase_B, phase_C, phase_D;
// update bit buffer
// sync up signal is 1600 BPS 2 level FSK signal
for (i=0; i<3; i++)
{
slr[i] = slr[i] << 1;
if (slr[i+1] & 0x8000) slr[i] |= 0x0001;
}
slr[3] = slr[3] << 1;
if (gin < 2) slr[3] |= 0x0001;
// FILE* pTest=NULL;
//
// if ((pTest = fopen("test.txt", "a")) != NULL)
// {
// fwrite(gin < 2 ? "1" : "0", 1, 1, pTest);
// fclose(pTest);
// }
if (flex_blk == 0) // Need sync-up, or just end of transmission?
{
if (flex_timer)
{
if (nOnes(slr[2] ^ EOT1) + nOnes(slr[3] ^ EOT2) == 0) // End of transmission?
{
flex_timer=0;
display_showmo(MODE_IDLE);
return;
}
}
// center portion always the same
nh = nOnes(slr[1] ^ SYNC1) + nOnes(slr[2] ^ SYNC2);
if (nh == 32) // 32 errors, so must be inverted
{
if (((slr[0] ^ slr[3]) & 0xFFFF) == 0xFFFF)
{
slr[0] ^= 0xFFFF; // Invert buffer so current frame
slr[3] ^= 0xFFFF; // can be decoded
InvertData(); // Invert receive polarity
nh = 0; // 32 inverted errors => 0 errors
}
}
// NOTE: STILL MISSING SEVERAL REFLEX SYNC UPS
// sync up with 1 or less mismatched bits out of center 32
// AND 2 or less mismatched bits out of outside 32
if (nh < 2) // guessing we've gotten sync up...
{
// nh = nOnes(slr[0] ^ slr[3]);
flex_bc = 89;
if (nOnes(slr[0] ^ slr[3] ^ 0xFFFF) < 2)
{
int speed;
for (speed=0; speed<8; speed++)
{
if ((nOnes(slr[0] ^ syncs[speed]) + nOnes(slr[3] ^ ~syncs[speed])) < 2)
{
if ((speed & 0x03) == 0)
{
if (!Profile.flex_1600) return; // FLEX-1600
else flex_speed = STAT_FLEX1600;
}
else if ((speed & 0x03) == 0x03)
{
if (!Profile.flex_6400) return; // FLEX-6400
else flex_speed = STAT_FLEX6400;
}
else
{
if (!Profile.flex_3200) return; // FLEX-3200
else flex_speed = STAT_FLEX3200;
}
bFlexActive = true;
flex_timer = 20;
g_sps = (speed & 0x01) ? 3200 : 1600;
level = (speed & 0x02) ? 4 : 2;
bReflex = (speed & 0x04) ? true : false;
if (g_sps == 3200) g_sps2 = 3200;
break;
}
}
if (speed == 8) // At this point, we should have a valid FLEX-sync, but no match
{ // in loop above. So let's show as unknown sync header :
display_color(&Pane1, COLOR_MISC);
display_line(&Pane1);
sprintf(sync, " UNKNOWN SYNC HEADER : %hX %hX %hX %hX", slr[0], slr[1], slr[2], slr[3]);
display_show_strV2(&Pane1, sync);
display_line(&Pane1);
return;
}
}
else return;
/*
if ((nOnes(slr[0] ^ 0x870C) + nOnes(slr[3] ^ 0x78F3)) < 3) // FLEX 2-level 1600
{
if (Profile.flex_1600) // 1000011100001100-0111100011110011
{
bFlexActive = true;
flex_timer = 21;
g_sps = 1600;
flex_speed = STAT_FLEX1600;
level = 2;
bReflex = false;
}
else return;
}
else if ((nOnes(slr[0] ^ 0xB068) + nOnes(slr[3] ^ 0x4F97)) < 3) // FLEX 4-level 3200
{
if (Profile.flex_3200) // 1011000001101000-0100111110010111
{
bFlexActive = true;
flex_timer = 20; // 2 seconds
g_sps = 1600;
flex_speed = STAT_FLEX3200;
level = 4;
bReflex = false;
}
else return;
}
else if ((nOnes(slr[0] ^ 0xDEA0) + nOnes(slr[3] ^ 0x215F)) < 3) // FLEX 4-level 6400
{
if (Profile.flex_6400) // 1101111010100000-0010000101011111
{
bFlexActive = true;
flex_timer = 20; // 2 seconds
g_sps = 3200;
g_sps2 = 3200;
flex_speed = STAT_FLEX6400;
level = 4;
bReflex = false;
}
else return;
}
else if ((nOnes(slr[0] ^ 0x7B18) + nOnes(slr[3] ^ 0x84E7)) < 3) // FLEX 2-level 3200
{
if (Profile.flex_3200) // 0111101100011000-1000010011100111
{
bFlexActive = true;
flex_timer = 20; // 2 seconds
g_sps = 3200;
g_sps2 = 3200;
flex_speed = STAT_FLEX3200;
level = 2;
bReflex = false;