customized_GPS.cpp
4.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
#include "simple_obd_test.h"
#include "customized_GPS.h"
#include "customized_OBD.h"
#include "customized_DateAndTime.h"
extern void clr_buff(char*,uint32_t);
extern FreematicsESP32 sys;
GPS_DATA* gd=0;
void init_GPS_dev(void){
if (sys.gpsBegin(GPS_SERIAL_BAUDRATE)) {
#if USE_SERIAL==1
Serial.println("GPS is initialized successfully");
#endif
}else{
#if USE_SERIAL==1
Serial.println("Error occured while initializing GPS");
#endif
while(1);
}
pinMode(26, OUTPUT);
pinMode(34, INPUT);
pinMode(PIN_GPS_POWER, OUTPUT);
digitalWrite(PIN_GPS_POWER, HIGH);
int cnt=0;
while(!isDataGPSReady(10000)){
delay(100);
cnt++;
if(cnt==5){
esp_sleep_enable_timer_wakeup(1 * uS_TO_S_FACTOR);
esp_deep_sleep_start();
}
}
UpdateTime();
SetSysInstance(&sys);
}
int isDataGPSReady(int wait_MS){
for (uint32_t t=millis();millis()-t<wait_MS;){
digitalWrite(26, digitalRead(34));
if (sys.gpsGetData(&gd))
return 1;
}
return 0;
}
int FilterGpsData(char* isoTime, double* res){
static char lastTimeStamp2[time_size]={0};
static float meanGPSCoord[NBR_GPS_POINTS][4];
float AuxGPSCoord[4];
int j;
int nbr_pts=NBR_GPS_POINTS;
static int cnt=0;
int slope_flag=0;
int shiftTime =0;
if (lastTimeStamp2[0]){
shiftTime=GetShiftTime(lastTimeStamp2,isoTime);
if (shiftTime>5){
meanGPSCoord[0][0]=gd->alt;
meanGPSCoord[0][1]=gd->lng;
meanGPSCoord[0][2]=gd->lat;
meanGPSCoord[0][3]=gd->speed*1.852f;
AuxGPSCoord[0]=gd->alt;
AuxGPSCoord[1]=gd->lng;
AuxGPSCoord[2]=gd->lat;
AuxGPSCoord[3]=gd->speed*1.852f;
cnt=0;
}else{
if (cnt+1<NBR_GPS_POINTS){
nbr_pts=cnt;
}
AuxGPSCoord[0]=gd->alt;
AuxGPSCoord[1]=gd->lng;
AuxGPSCoord[2]=gd->lat;
AuxGPSCoord[3]=gd->speed*1.852f;
for(j=0;j<nbr_pts;j++){
AuxGPSCoord[0]+=meanGPSCoord[j][0];
AuxGPSCoord[1]+=meanGPSCoord[j][1];
AuxGPSCoord[2]+=meanGPSCoord[j][2];
AuxGPSCoord[3]+=meanGPSCoord[j][3];
}
AuxGPSCoord[0]/=(nbr_pts+1);
AuxGPSCoord[1]/=(nbr_pts+1);
AuxGPSCoord[2]/=(nbr_pts+1);
AuxGPSCoord[3]/=(nbr_pts+1);
slope_flag=1;
}
}else{
meanGPSCoord[0][0]=gd->alt;
meanGPSCoord[0][1]=gd->lng;
meanGPSCoord[0][2]=gd->lat;
meanGPSCoord[0][3]=gd->speed*1.852f;
AuxGPSCoord[0]=gd->alt;
AuxGPSCoord[1]=gd->lng;
AuxGPSCoord[2]=gd->lat;
AuxGPSCoord[3]=gd->speed*1.852f;
cnt=0;
}
int n=(cnt+1)%NBR_GPS_POINTS;
int prev= !(n) ? NBR_GPS_POINTS-1 : n-1;
res[0]=AuxGPSCoord[0];
res[1]=AuxGPSCoord[1];
res[2]=AuxGPSCoord[2];
res[4]=AuxGPSCoord[3];
if (slope_flag){
double dist = (double) TinyGPS::distance_between((float) meanGPSCoord[prev][2],(float) meanGPSCoord[prev][1],(float) res[2],(float) res[1]);
#if USE_OBD==0
double dist_max = gd->speed*shiftTime/3.6*1.25;
#else
double dist_max = GetOBDSpeed()*shiftTime/3.6*1.2;
#endif
if ((dist>dist_max) || (dist>(85*shiftTime)))
return -1;
res[3]=(res[0]-meanGPSCoord[prev][0])/(dist+10)*100;
meanGPSCoord[n][0]=res[0];
meanGPSCoord[n][1]=res[1];
meanGPSCoord[n][2]=res[2];
meanGPSCoord[n][3]=res[4];
cnt++;
}
for (j=0;j<time_size;j++){
lastTimeStamp2[j]=isoTime[j];
}
#if USE_OBD==0
isVehicleStopped(isoTime,res[4]);
#endif
return slope_flag;
}
void isVehicleStopped(char* isoTime,double val){
static char lastTimeStamp[time_size]={0};
static float meanSpeed=0;
int j;
if (lastTimeStamp[0]){
if (GetShiftTime(lastTimeStamp,isoTime)>NBR_GPS_POINTS){
if ((meanSpeed<2)&&(abs(val-meanSpeed)<0.5)){
esp_sleep_enable_timer_wakeup(5 * uS_TO_S_FACTOR);
esp_deep_sleep_start();
}else{
meanSpeed=val;
for (j=0;j<time_size;j++){
lastTimeStamp[j]=isoTime[j];
}
}
}else{
meanSpeed+=val;
meanSpeed/=2;
}
}else{
meanSpeed=val;
for (j=0;j<time_size;j++){
lastTimeStamp[j]=isoTime[j];
}
}
}
int AddGPSData(char* isoTime,char* p, int* nbr){
int GPS_Stat=0;
char isoGPSTime[time_size]={0};
int flg_filter=0;
double res[5];
int i=0;
*nbr=0;
clr_buff(isoGPSTime,time_size);
if (!isDataGPSReady(1200)) {
#if USE_SERIAL==1
Serial.println("GPS signal lost !");
#endif
GPS_Stat=0;
}else{
GetCurrentTime(isoTime);
GetCurrentGPSTime(isoGPSTime);
flg_filter=FilterGpsData(isoTime, res);
if (flg_filter!=-1){
if (flg_filter==1){
i=sprintf(p,"%s,%s,%lf,%lf,%lf,%lf,%lf",isoTime,isoGPSTime,res[0],res[1],res[2],res[3],res[4]);
}else if (flg_filter==0) {
i=sprintf(p,"%s,%s,%lf,%lf,%lf,,%lf",isoTime,isoGPSTime,res[0],res[1],res[2],res[4]);
}
*nbr+=i;
GPS_Stat=1;
}else{
GPS_Stat=0;
}
}
return GPS_Stat;
}