/*
*******************************************************************************
* Copyright (c) 2021 by M5Stack
*                  Equipped with Atom-Lite/Matrix sample source code
*                          配套  Atom-Lite/Matrix 示例源代码
* Visit for more information: https://docs.m5stack.com/en/atom/atomicgps
* 获取更多资料请访问：https://docs.m5stack.com/zh_CN/atom/atomicgps
*
* Product:  GPS.
* Date: 2021/9/1
*******************************************************************************
  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
  这是一个使用串行BT的示例，您可以通过连接到手机或串行监视器上的蓝牙助手来查看GPS数据。GPS日志将写入SD卡
*/

#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.  将 GPS 数据写入 SD 卡
    txtFile = SD.open(filename, FILE_APPEND);
    if (txtFile) {
        txtFile.print(Lat);
        txtFile.print(", ");
        txtFile.print(Lon);
        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(1000);
}