/*This is an example used SerialBT,you can can view gps data by connecting 

 * to Bluetooth assistant on your mobilephone or Serial Monitor

 * the GPS log will be written to SD card

 * 

 */

#include "M5Atom.h"

#include "GPSAnalyse.h"

#include <SPI.h>

#include "FS.h"

#include <SD.h>

#include <BluetoothSerial.h>

 

BluetoothSerial SerialBT;

GPSAnalyse GPS;

uint64_t chipid;

char chipname[256];

const char filename[] = "/GPSdata.txt";

File txtFile;

float Lat;

float Lon;

String Utc;

bool writeLog(String filename) {          //Write GPSdata to SDcard

  txtFile = SD.open(filename, FILE_APPEND);

  if(txtFile){

    txtFile.print(String(Lat,5));

    txtFile.print(", ");

    txtFile.print(String(Lon,5));

    txtFile.print(", ");

    txtFile.println(Utc);

    txtFile.close();

  }else{

    return false;

  }

  return true;

}

void setup() {

    M5.begin(true,false,true); 

    chipid = ESP.getEfuseMac();

    sprintf( chipname, "SerialBT_%04X", (uint16_t)(chipid >> 32));

    Serial.printf("Bluetooth: %s\n", chipname);   

    SPI.begin(23,33,19,-1);

    if(!SD.begin(-1, SPI, 40000000)){

      Serial.println("initialization failed!");

    } 

    sdcard_type_t Type = SD.cardType();

  Serial.printf("SDCard Type = %d \r\n",Type);

  Serial.printf("SDCard Size = %d \r\n" , (int)(SD.cardSize()/1024/1024));

    M5.dis.fillpix(0x00004f);

    

    Serial1.begin(9600,SERIAL_8N1,22,-1);

    SerialBT.begin(chipname);

    GPS.setTaskName("GPS");

    GPS.setTaskPriority(2);

    GPS.setSerialPtr(Serial1);

    GPS.start();

}

void loop() {

    GPS.upDate();

    Lat = GPS.s_GNRMC.Latitude;

    Lon = GPS.s_GNRMC.Longitude;

    Utc = GPS.s_GNRMC.Utc;

    SerialBT.printf("Latitude= %.5f \r\n",Lat);

    SerialBT.printf("Longitude= %.5f \r\n",Lon);

    SerialBT.printf("DATA= %s \r\n",Utc);

    Serial.printf("Latitude= %.5f \r\n",Lat);

    Serial.printf("Longitude= %.5f \r\n",Lon);

    Serial.printf("DATA= %s \r\n",Utc);

    writeLog(filename);

    delay(20000);

}