mirror
/
rdz_ttgo_sonde
kopia lustrzana https://github.com/dl9rdz/rdz_ttgo_sonde
1
0
Forkuj 0
Kod Zgłoszenia Projekty Wydania Wiki Aktywność
rdz_ttgo_sonde/RX_FSK/src/M10M20.cpp

658 wiersze
20 KiB
C++
Czysty Wina Historia

/* M10 and M20 decoder functions */
#include "M10M20.h"
#include "SX1278FSK.h"
#include "rsc.h"
#include "Sonde.h"
#include <SPIFFS.h>
#define M10M20_DEBUG 1
#if M10M20_DEBUG
#define M10M20_DBG(x) x
#else
#define M10M20_DBG(x)
#endif
static byte data1[512];
static byte *dataptr=data1;
static uint8_t rxbitc;
static uint16_t rxbyte;
static int rxp=0;
static int haveNewFrame = 0;
//static int lastFrame = 0;
static int headerDetected = 0;
decoderSetupCfg m10m20SetupCfg = {
.bitrate = 9600,
//// Disable auto-AFC, auto-AGC, RX Trigger by preamble
.rx_cfg = 0x00,
.sync_cfg = 0x70,
.sync_len = 1,
.sync_data = (const uint8_t *)"\x66\x66",
// Preamble detection off (+ size 1 byte, maximum tolerance; should not matter for "off"?)
.preamble_cfg = 0x00 | 0x00 | 0x1F,
};
int M10M20::setup(float frequency, int /*type*/)
{
M10M20_DBG(Serial.println("Setup sx1278 for M10/M20 sonde"));;
if(sx1278.ON()!=0) {
M10M20_DBG(Serial.println("Setting SX1278 power on FAILED"));
return 1;
}
// setFSK: switches to FSK standby mode
if(sx1278.setFSK()!=0) {
M10M20_DBG(Serial.println("Setting FSK mode FAILED"));
return 1;
}
Serial.print("M10/M20: setting RX frequency to ");
Serial.println(frequency);
int res = sx1278.setFrequency(frequency);
// Test: maybe fix issue after spectrum display?
sx1278.writeRegister(REG_PLL_HOP, 0);
if(sx1278.setAFCBandwidth(sonde.config.m10m20.agcbw)!=0) {
M10M20_DBG(Serial.printf("Setting AFC bandwidth %d Hz FAILED", sonde.config.m10m20.agcbw));
return 1;
}
if(sx1278.setRxBandwidth(sonde.config.m10m20.rxbw)!=0) {
M10M20_DBG(Serial.printf("Setting RX bandwidth to %d Hz FAILED", sonde.config.m10m20.rxbw));
return 1;
}
/// TODO: Maybe do this conditionally? -- maybe skip if afc if agcbw set to 0 or -1?
//// Step 1: Tentative AFC mode
sx1278.clearIRQFlags();
// preamble detector + AFC + AGC on
// wait for preamble interrupt within 2sec
sx1278.setBitrate(4800);
// DetectorOn=1, Preamble detector size 01, preamble tol 0x0A (10)
sx1278.setPreambleDetect(0x80 | 0x20 | 0x0A);
// Manual start RX, Enable Auto-AFC, Auto-AGC, RX Trigger (AGC+AFC)by preamble
sx1278.setRxConf(0x20 | 0x10 | 0x08 | 0x06);
// Packet config 1: fixed len, no mancecer, no crc, no address filter
// Packet config 2: packet mode, no home ctrl, no beackn, msb(packetlen)=0)
if(sx1278.setPacketConfig(0x08, 0x40)!=0) {
M10M20_DBG(Serial.println("Setting Packet config FAILED"));
return 1;
}
// enable RX
sx1278.setPayloadLength(0);
sx1278.writeRegister(REG_OP_MODE, FSK_RX_MODE);
unsigned long t0 = millis();
M10M20_DBG(Serial.printf("M10M20::setup() AFC preamble search start at %ld\n",t0));
while( millis() - t0 < 1000 ) {
uint8_t value = sx1278.readRegister(REG_IRQ_FLAGS1);
if(value & 2) {
int32_t afc = sx1278.getAFC();
int16_t rssi = sx1278.getRSSI();
Serial.printf("M10M20::setup: preamble: AFC is %d, RSSI is %.1f\n", afc, rssi/2.0);
sonde.sondeList[rxtask.currentSonde].rssi = rssi;
sonde.sondeList[rxtask.currentSonde].afc = afc;
break;
}
yield();
}
if( millis() - t0 >= 1000) {
Serial.println("Preamble scan for AFC: TIMEOUT\n");
return 1; // no preamble, so we may fail fast....
}
//// Step 2: Real reception
if( DecoderBase::setup(m10m20SetupCfg, sonde.config.m10m20.agcbw, sonde.config.m10m20.rxbw)!=0 ) {
return 1;
}
#if 0
// Now all done in DecoderBase::setup
// FSK standby mode, seems like otherweise baudrate cannot be changed?
sx1278.setFSK();
if(sx1278.setBitrate(9600)!=0) {
M10M20_DBG(Serial.println("Setting bitrate 9600bit/s FAILED"));
return 1;
}
M10M20_DBG(Serial.printf("Exact bitrate is %f\n", sx1278.getBitrate()));
// Probably not necessary, as this was set before
if(sx1278.setAFCBandwidth(sonde.config.m10m20.agcbw)!=0) {
M10M20_DBG(Serial.printf("Setting AFC bandwidth %d Hz FAILED", sonde.config.m10m20.agcbw));
return 1;
}
if(sx1278.setRxBandwidth(sonde.config.m10m20.rxbw)!=0) {
M10M20_DBG(Serial.printf("Setting RX bandwidth to %d Hz FAILED", sonde.config.m10m20.rxbw));
return 1;
}
///// Enable auto-AFC, auto-AGC, RX Trigger by preamble
//if(sx1278.setRxConf(0x1E)!=0) {
// Disable auto-AFC, auto-AGC, RX Trigger by preamble
if(sx1278.setRxConf(0x00)!=0) {
M10M20_DBG(Serial.println("Setting RX Config FAILED"));
return 1;
}
// version 1, working with continuous RX
const char *SYNC="\x66\x66";
if(sx1278.setSyncConf(0x70, 1, (const uint8_t *)SYNC)!=0) {
M10M20_DBG(Serial.println("Setting SYNC Config FAILED"));
return 1;
}
// Preamble detection off (+ size 1 byte, maximum tolerance; should not matter for "off"?)
if(sx1278.setPreambleDetect(0x00 | 0x00 | 0x1F)!=0) {
M10M20_DBG(Serial.println("Setting PreambleDetect FAILED"));
return 1;
}
#endif
// Packet config 1: fixed len, no mancecer, no crc, no address filter
// Packet config 2: packet mode, no home ctrl, no beackn, msb(packetlen)=0)
if(sx1278.setPacketConfig(0x08, 0x40)!=0) {
M10M20_DBG(Serial.println("Setting Packet config FAILED"));
return 1;
}
// enable RX
sx1278.setPayloadLength(0); // infinite for now...
sx1278.setRxConf(0x20);
uint16_t afc = sx1278.getRawAFC();
sx1278.writeRegister(REG_OP_MODE, FSK_RX_MODE);
delay(50);
sx1278.setRawAFC(afc);
delay(50);
Serial.printf("after RX_MODE: AFC is %d\n", sx1278.getAFC());
#if M10M20_DEBUG
M10M20_DBG(Serial.println("Setting SX1278 config for M10 finished\n"); Serial.println());
#endif
return res;
}
M10M20::M10M20() {
}
#define M10_FRAMELEN 101
#define M10_CRCPOS 99
#define M20_FRAMELEN 88
#define M20_CRCPOSB 22
void M10M20::printRaw(uint8_t *data, int len)
{
char buf[3];
int i;
for(i=0; i<len; i++) {
snprintf(buf, 3, "%02X ", data[i]);
Serial.print(buf);
}
Serial.println();
}
static uint16_t update_checkM10M20(int c, uint8_t b) {
int c0, c1, t, t6, t7, s;
c1 = c & 0xFF;
// B
b = (b >> 1) | ((b & 1) << 7);
b ^= (b >> 2) & 0xFF;
// A1
t6 = ( c & 1) ^ ((c >> 2) & 1) ^ ((c >> 4) & 1);
t7 = ((c >> 1) & 1) ^ ((c >> 3) & 1) ^ ((c >> 5) & 1);
t = (c & 0x3F) | (t6 << 6) | (t7 << 7);
// A2
s = (c >> 7) & 0xFF;
s ^= (s >> 2) & 0xFF;
c0 = b ^ t ^ s;
return ((c1 << 8) | c0) & 0xFFFF;
}
static uint16_t crc_M10M20(int len, uint8_t *msg) {
uint16_t cs = 0;
for (int i = 0; i < len; i++) {
cs = update_checkM10M20(cs, msg[i]);
}
return cs;
}
static bool checkM10M20crc(int crcpos, uint8_t *msg) {
uint16_t cs, cs1;
cs = crc_M10M20(crcpos, msg);
cs1 = (msg[crcpos] << 8) | msg[crcpos+1];
return (cs1 == cs);
}
typedef uint32_t SET256[8];
static SET256 sondeudp_VARSET = {0x03BBBBF0UL,0x80600000UL,0x06A001A0UL,
0x0000001CUL,0x00000000UL,0x00000000UL,0x00000000UL,
0x00000000UL};
// VARSET=SET256{4..9,11..13,15..17,19..21,23..25,53..54,63,69,71,72,85,87,89,90,98..100};
static SET256 sondeudp_VARSETM20 = {0xF3E27F54UL,0x0000000FUL,0x00000030UL,
0x00000000UL, 0x00444C39UL, 0x53445A00UL, 0x00000000UL,
0x00000000UL};
// VARSET=SET256{2,4,6,8..10,11..14,17,21..25,28..35,68,69}; (* known as variable *)
static uint8_t fixcnt[M10_FRAMELEN];
static uint8_t fixbytes[M10_FRAMELEN];
static int32_t getint32(uint8_t *data) {
return (int32_t)( data[3]|(data[2]<<8)|(data[1]<<16)|(data[0]<<24) );
}
static int32_t getint24(uint8_t *data) {
return (int32_t)(data[2]|(data[1]<<8)|(data[0]<<16) );
}
static int32_t getint24_r(uint8_t *data) {
return (int32_t)(data[0]|(data[1]<<8)|(data[2]<<16) );
}
static int16_t getint16(uint8_t *data) {
return (int16_t)(data[1]|((uint16_t)data[0]<<8));
}
static int16_t getint16_r(uint8_t *data) {
return (int16_t)(((uint16_t)data[1]<<8) |data[0]);
}
static char dez(uint8_t nr) {
nr = nr%10;
return '0'+nr;
}
static char hex(uint8_t nr) {
nr = nr&0x0f;
if(nr<10) return '0'+nr;
else return 'A'+nr-10;
}
const static float DEGMUL = 1.0/0xB60B60;
#define VMUL 0.005
#define VMUL_M20 0.01
#ifndef PI
#define PI (3.1415926535897932384626433832795)
#endif
#define RAD (PI/180)
// ret: 1=frame ok; 2=frame with errors; 0=ignored frame (m10dop-alternativ)
int M10M20::decodeframeM10(uint8_t *data) {
int repairstep = 16;
int repl = 0;
bool crcok;
// error correction, inspired by oe5dxl's sondeudp
do {
crcok = checkM10M20crc(M10_CRCPOS, data);
if(crcok || repairstep==0) break;
repl = 0;
for(int i=0; i<M10_CRCPOS; i++) {
if( ((sondeudp_VARSET[i/32]&(1<<(i%32))) == 0) && (fixcnt[i]>=repairstep) ) {
repl++;
data[i] = fixbytes[i];
}
}
repairstep >>= 1;
} while(true);
if(crcok) {
for(int i=0; i<M10_CRCPOS; i++) {
if(fixbytes[i]==data[i] &&fixcnt[i]<255) fixcnt[i]++;
else { fixcnt[i]=0; fixbytes[i]=data[i]; }
}
}
Serial.println(crcok?"CRC OK":"CRC NOT OK");
Serial.printf(" repair: %d/%d\n", repl, repairstep);
if(!crcok) return 2;
if(data[1]==0x9F && data[2]==0x20) {
Serial.println("Decoding...");
//SondeInfo *si = sonde.si();
SondeData *si = &(sonde.si()->d);
// Set type info to M10
memcpy(si->typestr, "M10 ", 5);
si->subtype = 1; // subtype 1: M10
// Its a M10
// getid...
char ids[12];
ids[0] = 'M';
ids[1] = 'E';
ids[2] = hex(data[95]/16);
ids[3] = hex(data[95]);
ids[4] = hex(data[93]);
uint32_t id = data[96] + data[97]*256;
ids[5] = hex(id/4096);
ids[6] = hex(id/256);
ids[7] = hex(id/16);
ids[8] = hex(id);
ids[9] = 0;
strncpy(si->id, ids, 10);
ids[0] = hex(data[95]/16);
ids[1] = dez((data[95]&0x0f)/10);
ids[2] = dez((data[95]&0x0f));
ids[3] = '-';
ids[4] = dez(data[93]);
ids[5] = '-';
ids[6] = dez(id>>13);
id &= 0x1fff;
ids[7] = dez(id/1000);
ids[8] = dez((id/100)%10);
ids[9] = dez((id/10)%10);
ids[10] = dez(id%10);
ids[11] = 0;
strncpy(si->ser, ids, 12);
si->validID = true;
Serial.printf("ID is %s [%02x %02x %d]\n", ids, data[95], data[93], id);
// ID printed on sonde is ...-.-abbbb, with a=id>>13, bbbb=id&0x1fff in decimal
// position data
si->lat = getint32(data+14) * DEGMUL;
si->lon = getint32(data+18) * DEGMUL;
si->alt = getint32(data+22) * 0.001;
float ve = getint16(data+4)*VMUL;
float vn = getint16(data+6)*VMUL;
si->vs = getint16(data+8) * VMUL;
si->hs = sqrt(ve*ve+vn*vn);
si->sats = data[30];
float dir = atan2(ve, vn)*(1.0/RAD);
if(dir<0) dir+=360;
si->dir = dir;
si->validPos = 0x3f;
// m10 temp
float T = NAN;
{
const float p0 = 1.07303516e-03, p1 = 2.41296733e-04, p2 = 2.26744154e-06, p3 = 6.52855181e-08;
const float Rs[3] = { 12.1e3 , 36.5e3 , 475.0e3 };
const float Rp[3] = { 1e20 , 330.0e3 , 2000.0e3 };
uint8_t sct = data[62];
float rt = getint16_r(data+63) & (0xFFF);
if(rt!=0 && sct<3) {
rt = (4095-rt)/rt - (Rs[sct]/Rp[sct]);
if(rt>0) {
rt = Rs[sct] / rt;
if(rt>0) {
rt = log(rt);
rt = 1/( p0 + p1*rt + p2*rt*rt + p3*rt*rt*rt ) - 273.15;
if(rt>-99 && rt<50) { T = rt; }
}
}
}
si->temperature = T;
}
// m10 battery
uint16_t batADC = (uint16_t)getint16_r(data+0x45);
si->batteryVoltage = 2.709 * batADC * 2.5/1023.0;
// m10 humidity
{
float cRHc55 = ((float)(uint32_t)getint24_r(data+0x35)) / (uint32_t)getint24_r(data+0x32);
float TH = -273.15;
const float huRs = 22.1e3;
const float p0 = 4.42606809e-03, p1 = -6.58184309e-04, p2 = 8.95735557e-05, p3 = -2.84347503e-06;
float R = huRs / ( (4095.0/getint16_r(data+0x59)) - 1 );
if(R>0) TH += 1/( p0 + p1*log(R) + p2*log(R)*log(R) + p3*log(R)*log(R)*log(R) );
//float Tc = T;
float rh = (cRHc55-0.8955)/0.002;
const float T0=0.0, T1=-30.0;
//float T = Tc;
if(T<T0) rh += T0 - T/5.5;
if(T<T1) rh *= 1.0 + (T1-T)/75.0;
if(rh<0.0) rh=0.0;
if(rh>100.0) rh=100.0;
si->relativeHumidity = rh;
}
Serial.printf("hum: %.2f batt: %.2f\n", si->relativeHumidity, si->batteryVoltage);
uint32_t gpstime = getint32(data+10);
uint16_t gpsweek = getint16(data+32);
// UTC is GPSTIME - 18s (24*60*60-18 = 86382)
// one week = 7*24*60*60 = 604800 seconds
// unix epoch starts jan 1st 1970 0:00
// gps time starts jan 6, 1980 0:00. thats 315964800 epoch seconds.
// subtracting 86400 yields 315878400UL
si->time = (gpstime/1000) + 86382 + gpsweek*604800 + 315878400UL;
// consistent with autorx, vframe is based on GPS time without the -18 seconds adjustment
// for the GPS time / UTC time difference (included in 86382 above)
si->vframe = si->time - 315964800 + 18;
si->validTime = true;
} else {
Serial.printf("data is %02x %02x %02x\n", data[0], data[1], data[2]);
return 0;
}
return 1;
}
static uint32_t rxdata;
static bool rxsearching=true;
static bool isM20=false;
// search for
// //101001100110011010011010011001100110100110101010100110101001
// //1010011001100110100110100110 0110.0110 1001.1010 1010.1001 1010.1001 => 0x669AA9A9
void M10M20::processM10data(uint8_t dt)
{
for(int i=0; i<8; i++) {
uint8_t d = (dt&0x80)?1:0;
dt <<= 1;
rxdata = (rxdata<<1) | d;
if( (rxbitc&1)==0 ) {
// "bit1"
rxbyte = (rxbyte<<1) | d;
} else {
// "bit2" ==> 01 or 10 => 1, otherweise => 0
rxbyte = rxbyte ^ d;
}
//
if(rxsearching) {
if( rxdata == 0xcccca64c || rxdata == 0x333359b3 ) {
rxsearching = false;
rxbitc = 0;
rxp = 0;
//isM20 = false;
headerDetected = 1;
#if 1
int rssi=sx1278.getRSSI();
int fei=sx1278.getFEI();
int afc=sx1278.getAFC();
Serial.print("SYNC!!! Test: RSSI="); Serial.print(rssi);
Serial.print(" FEI="); Serial.print(fei);
Serial.print(" AFC="); Serial.println(afc);
sonde.si()->rssi = rssi;
sonde.si()->afc = afc;
#endif
}
} else {
rxbitc = (rxbitc+1)%16; // 16;
if(rxbitc == 0) { // got 8 data bit
//Serial.printf("%03x ",rxbyte);
dataptr[rxp++] = rxbyte&0xff; // (rxbyte>>1)&0xff;
// detect type of sonde:
// 64 9F 20 => M10
// 64 49 0x => M10 (?) -- not used here
// 45 20 7x => M20
if(rxp==2) {
// Update: change type only if valid type information in received data
if(dataptr[0]==0x45 && dataptr[1]==0x20) { isM20 = true; }
else if(/*dataptr[0]==0x64 &&*/ dataptr[1]==0x9F) { isM20 = false; }
}
if(isM20) {
if(rxp>=M20_FRAMELEN) {
rxsearching = true;
haveNewFrame = decodeframeM20(dataptr);
}
} else {
if(rxp>=M10_FRAMELEN) {
rxsearching = true;
haveNewFrame = decodeframeM10(dataptr);
}
}
}
}
}
}
int M10M20::receive() {
unsigned long t0 = millis();
Serial.printf("M10M20::receive() start at %ld\n",t0);
while( millis() - t0 < 1100 ) {
uint8_t value = sx1278.readRegister(REG_IRQ_FLAGS2);
if ( bitRead(value, 7) ) {
Serial.println("FIFO full");
}
if ( bitRead(value, 4) ) {
Serial.println("FIFO overflow");
}
if ( bitRead(value, 2) == 1 ) {
Serial.println("FIFO: ready()");
sx1278.clearIRQFlags();
}
if(bitRead(value, 6) == 0) { // while FIFO not empty
byte data = sx1278.readRegister(REG_FIFO);
//Serial.printf("%02x:",data);
processM10data(data);
value = sx1278.readRegister(REG_IRQ_FLAGS2);
} else {
if(headerDetected) {
t0 = millis(); // restart timer... don't time out if header detected...
headerDetected = 0;
}
if(haveNewFrame) {
Serial.printf("M10M20::receive(): new frame complete after %ldms\n", millis()-t0);
printRaw(dataptr, M10_FRAMELEN);
int retval = haveNewFrame==1 ? RX_OK: RX_ERROR;
haveNewFrame = 0;
return retval;
}
delay(2);
}
}
int32_t afc = sx1278.getAFC();
int16_t rssi = sx1278.getRSSI();
Serial.printf("receive: AFC is %d, RSSI is %.1f\n", afc, rssi/2.0);
Serial.printf("M10M20::receive() timed out\n");
return RX_TIMEOUT; // TODO RX_OK;
}
#define M10MAXLEN (240)
int M10M20::waitRXcomplete() {
return 0;
}
// ret: 1=frame ok; 2=frame with errors; 0=ignored frame (m20dop-alternativ)
int M10M20::decodeframeM20(uint8_t *data) {
int repairstep = 16;
int frl;
int repl = 0;
bool crcok = false;
bool crcbok = false;
//SondeInfo *si = sonde.si();
SondeData *si = &(sonde.si()->d);
// error correction, inspired by oe5dxl's sondeudp
// check first block
uint8_t s[200];
s[0] = 0x16;
for(int i=1; i<=M20_CRCPOSB-1; i++) { s[i] = data[i+1]; }
crcbok = (crc_M10M20(M20_CRCPOSB-1, s) ==
((data[M20_CRCPOSB] << 8) | data[M20_CRCPOSB+1]));
frl = data[0] + 1; // frame len? (0x45+1 => 70)
if(frl>M20_FRAMELEN) { frl = M20_FRAMELEN; }
do {
crcok = checkM10M20crc(frl-2, data);
if(crcok || repairstep == 0) break;
repl = 0;
for(int i=crcbok?M20_CRCPOSB+2:0; i<frl-2; i++) {
if( ((sondeudp_VARSETM20[i/32]&(1<<(i%32))) == 0) && (fixcnt[i]>=repairstep) ) {
repl++;
data[i] = fixbytes[i];
}
}
repairstep >>= 1;
} while(true);
if(crcbok) {
int oklen = crcok ? frl-2 : 21;
for(int i=0; i<oklen; i++) {
if(fixbytes[i]==data[i]) { if(fixcnt[i]<255) fixcnt[i]++; }
else { fixcnt[i]=0; fixbytes[i]=data[i]; }
}
}
Serial.println(crcok?"CRC OK":"CRC NOT OK");
Serial.printf(" repair: %d/%d\n", repl, repairstep);
if(!crcok) return 2;
Serial.println("Decoding...");
// Its a M20
memcpy(si->typestr, "M20 ", 5);
si->subtype = 2; // subtype 2: M20
// getid...
// TODO: Adjust ID calculation and serial number reconstruction
char ids[11]={'M','E','0','0','0','0','0','0','0','0','0'};
ids[0] = 'M';
ids[1] = 'E';
uint32_t id = data[18]; // getint16(data+18);
ids[2] = hex(id/16);
ids[3] = hex(id);
//
id = getint16_r(data+19)/4;
ids[4] = (char)((id/10000)%10+48);
ids[5] = (char)((id/1000)%10+48);
ids[6] = (char)((id/100)%10+48);
ids[7] = (char)((id/10)%10+48);
ids[8] = (char)(id%10+48);
ids[9] = 0;
strncpy(si->id, ids, 10);
// Serial: AAB-C-DDEEE
char *ser = si->ser;
uint8_t tmp = data[18] & 0x7F;
ser[0] = (tmp/12) + '0';
ser[1] = ((tmp%12 + 1) / 10 ) + '0';
ser[2] = ((tmp%12 + 1) % 10 ) + '0';
ser[3] = '-';
ser[4] = ((data[19]&0x03)<<1) + (data[18]/128) + 1 + '0';
ser[5] = '-';
ser[6] = ids[4];
ser[7] = ids[5];
ser[8] = ids[6];
ser[9] = ids[7];
ser[10] = ids[8];
ser[11] = 0;
// TODO
if(crcok) {
si->validID = true;
//Serial.printf("ID is %s [%02x %02x %d]\n", ids, data[95], data[93], id);
// ID printed on sonde is ...-.-abbbb, with a=id>>13, bbbb=id&0x1fff in decimal
// position data
// 0x1C 4 byte
si->lat = getint32(data+28) * 1e-6;
//0x20 4 byte
si->lon = getint32(data+32) * 1e-6;
//0x08 3 byte
si->alt = getint24(data+8) * VMUL_M20;
//0x0B 2 byte
//VMUL_M20 specific
float ve = getint16(data+11)*VMUL_M20;
//0x0D 2 byte
float vn = getint16(data+13)*VMUL_M20;
//0x18 2 byte
si->vs = getint16(data+24) * VMUL_M20;
si->hs = sqrt(ve*ve+vn*vn);
float dir = atan2(ve, vn)*(1.0/RAD);
if(dir<0) dir+=360;
si->dir = dir;
si->validPos = 0x3f;
//0x0F 3 byte
uint32_t tow = getint24(data+15);
uint16_t week = getint16(data+26);
si->time = (tow+week*604800+315964800)-18;
si->vframe =si->time - 315964800;
si->validTime = true;
}
return crcok?1:2;
}
M10M20 m10m20 = M10M20();
Reference in New Issue View Git Blame Kopiuj bezpośredni odnośnik