We really need help on completing this project in 5 days. Please help us and it would very much appreciated.
Details :
• Maduino Zero 4G LTE with GPS Module
• iOS and Android
• Blynk server = SGP1
• I don’t have any idea about the blynk library since I am a new user.
• The code below is not mine, since I am just trying out the one I found in YouTube. I followed all and still the device appears offline in the mobile and web Blynk app.
#include <stdio.h>
#include <string.h>
#define DEBUG true
#define MODE_1A
#define DTR_PIN 9
#define RI_PIN 8
#define LTE_PWRKEY_PIN 5
#define LTE_RESET_PIN 6
#define LTE_FLIGHT_PIN 7
String token = "ADD YOU TOKEN HERE";
String from_usb = "";
String loc = "";
String longitude = "";
String lattitude = "";
//FUNCTION TO PASS AT COMMAND
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
Serial1.println(command);
long int time = millis();
while ( (time + timeout) > millis())
{
while (Serial1.available())
{
char c = Serial1.read();
response += c;
}
}
if (debug)
{
SerialUSB.print(response);
}
return response;
}
//FUNCTION TO CHECK SIGNAL STRENGTH
int check_signal(void)
{
while(1)
{
String sig = sendData("AT+CSQ",3000,DEBUG);
int i=0;
String strength;
while(sig[i]!=':')i++;
String loc_2 = sig.substring(i+2);
i=0;
while(loc_2[i]!=',')i++;
strength = loc_2.substring(0,i);
int strength_1 = strength.toInt();
SerialUSB.println(strength_1);
return strength_1;
}
}
//FUNCTION TO GET LATITUDE AND LONGITUDE STRING
void gpsLocation(String local)
{
// char* loc_2 = local;
// int p=0;
while(1)
{
int i=0;
while(local[i]!=':')i++;
String loc_2 = local.substring(i+2);
i=0;
while(loc_2[i]!=',')i++;
lattitude = loc_2.substring(0,i);
SerialUSB.println(lattitude);
int j = i+3;
int k = j;
while(loc_2[k]!=',')k++;
longitude = loc_2.substring(j,k);
SerialUSB.println(longitude);
return;
}
}
//CONVERSION OF GIVEN LATTITUDE FORMAT FROM NMEA TO PARSER
String conversion(String local)
{
if(local[0]=='0'){
String str_end = local.substring(3);
String str_init = local.substring(1,3);
int val = str_init.toInt();
double deci_val = str_end.toDouble() ;
double new_value = val+(deci_val / 60);
SerialUSB.println(new_value);
String final_val = String(new_value,5);
return final_val;
}
else if(local[0]!='0')
{
String str_end = local.substring(2);
String str_init = local.substring(0,2);
int val = str_init.toInt();
double deci_val = str_end.toDouble() ;
double new_value = val+(deci_val / 60);
SerialUSB.println(new_value);
String final_val = String(new_value,5);
return final_val;
}
}
//FUNCTION TO PASS LOCATION IN BLYNK API
void map_loc(String lat1,String lon1)
{
String lat = conversion(lat1);
String lon = conversion(lon1);
SerialUSB.print("lattitude = ");SerialUSB.println(lat);
SerialUSB.print("longitude = ");SerialUSB.println(lon);
String http_str = "AT+HTTPPARA=\"URL\",\"https://sgp1.blynk.cloud/external/api/batch/update?token=" + token + "&V9=" + lon + "&V9=" + lat + "\"\r\n";
SerialUSB.println(http_str);
sendData("AT+HTTPINIT\r\n", 3000, DEBUG);
sendData(http_str, 3000, DEBUG);
sendData("AT+HTTPACTION=0\r\n", 3000, DEBUG);
sendData("AT+HTTPTERM\r\n", 3000, DEBUG);
}
void setup(){
SerialUSB.begin(115200);
//while (!SerialUSB)
// {
; // wait for Arduino serial Monitor port to connect
// }
delay(100);
Serial1.begin(115200);
//INITIALIZING GSM MODULE
pinMode(LTE_RESET_PIN, OUTPUT);
digitalWrite(LTE_RESET_PIN, LOW);
pinMode(LTE_PWRKEY_PIN, OUTPUT);
digitalWrite(LTE_RESET_PIN, LOW);
delay(100);
digitalWrite(LTE_PWRKEY_PIN, HIGH);
delay(2000);
digitalWrite(LTE_PWRKEY_PIN, LOW);
pinMode(LTE_FLIGHT_PIN, OUTPUT);
digitalWrite(LTE_FLIGHT_PIN, LOW); //Normal Mode
// digitalWrite(LTE_FLIGHT_PIN, HIGH);//Flight Mode
SerialUSB.println("Maduino Zero 4G Test Start!");
SerialUSB.println(sendData("AT+CGMM\r\n", 3000, DEBUG));
sendData("AT+CPIN?\r\n",3000,DEBUG);
sendData("AT+COPS?\r\n",3000,DEBUG);
sendData("AT+CNUM\r\n",3000,DEBUG);
//INITIALIZING GPS MODULE
sendData("AT+CGPS=1",3000,DEBUG);
delay(60000);
}
void loop(){
//CHECKING SIGNAL STRENGTH
if(check_signal()>=10)
{
loc = sendData("AT+CGPSINFO\r\n",3000,DEBUG);
gpsLocation(loc);
if(lattitude!=""&& longitude!="")
{
map_loc(lattitude,longitude);
}
delay(5000);
}
}
