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/*********************************************************************
作者：神秘藏寶室
店鋪：ILoveMCU
本例程僅適用于在本店購買模塊的用戶使用，鄙視其它店鋪的盜用行為
接線方式
A7 ARDUINO MEGA2560
GND ---> GND
U_TXD ---> RX3
U_RXD <--- TX3
GPS_TXD ---> RX2
*********************************************************************/
#include <TimerOne.h>
#define DebugSerial Serial
#define GprsSerail Serial3
#define GpsSerial Serial2
struct
{
char GPS_Buffer[80];
bool isGetData; //是否獲取到GPS數(shù)據(jù)
bool isParseData; //是否解析完成
char UTCTime[11]; //UTC時間
char latitude[11]; //緯度
char N_S[2]; //N/S
char longitude[12]; //經(jīng)度
char E_W[2]; //E/W
bool isUsefull; //定位信息是否有效
} Save_Data;
const unsigned int gpsRxBufferLength = 600;
char gpsRxBuffer[gpsRxBufferLength];
unsigned int gpsRxCount = 0;
#define Success 1U
#define Failure 0U
int L = 13; //LED指示燈引腳
unsigned long Time_Cont = 0; //定時器計數(shù)器
const unsigned int gprsRxBufferLength = 500;
char gprsRxBuffer[gprsRxBufferLength];
unsigned int gprsBufferCount = 0;
char messageBuffer[100] = {};
char send_buf[100] = {0};
const char TCPServer[] = "122.228.19.57"; //TCP服務器地址
const char Port[] = "30396"; //端口
unsigned int count = 0;
void setup() {
pinMode(L, OUTPUT);
digitalWrite(L, LOW);
DebugSerial.begin(9600);
GprsSerail.begin(115200);
GpsSerial.begin(9600); //定義波特率9600，和我們店鋪的GPS模塊輸出的波特率一致
Timer1.initialize(1000);
Timer1.attachInterrupt(Timer1_handler);
initGprs(); //初始化模塊
DebugSerial.println("\r\nsetup end!");
clrGprsRxBuffer();
}
void loop() {
gpsRead(); //獲取GPS數(shù)據(jù)
parseGpsBuffer();//解析GPS數(shù)據(jù)
printGpsBuffer();//輸出解析后的數(shù)據(jù)
}
void initGprs()
{
if (sendCommand("AT+RST\r\n", "OK\r\n", 3000, 10) == Success);
else errorLog(1);
if (sendCommand("AT\r\n", "OK\r\n", 3000, 10) == Success);
else errorLog(2);
delay(10);
if (sendCommand("AT+GPS=1\r\n","OK\r\n", 1000, 10) == Success);
else errorLog(3);
delay(10);
}
void(* resetFunc) (void) = 0; //制造重啟命令
void errorLog(int num)
{
DebugSerial.print("ERROR");
DebugSerial.println(num);
while (1)
{
digitalWrite(L, HIGH);
delay(100);
digitalWrite(L, LOW);
delay(100);
digitalWrite(L, HIGH);
delay(100);
digitalWrite(L, LOW);
delay(300);
if (sendCommand("AT\r\n", "OK", 100, 10) == Success)
{
DebugSerial.print("\r\nRESET!!!!!!\r\n");
resetFunc();
}
}
}
void printGpsBuffer()
{
if (Save_Data.isParseData)
{
Save_Data.isParseData = false;
DebugSerial.print("Save_Data.UTCTime = ");
DebugSerial.println(Save_Data.UTCTime);
if (Save_Data.isUsefull)
{
Save_Data.isUsefull = false;
DebugSerial.print("Save_Data.latitude = ");
DebugSerial.println(Save_Data.latitude);
DebugSerial.print("Save_Data.N_S = ");
DebugSerial.println(Save_Data.N_S);
DebugSerial.print("Save_Data.longitude = ");
DebugSerial.println(Save_Data.longitude);
DebugSerial.print("Save_Data.E_W = ");
DebugSerial.println(Save_Data.E_W);
digitalWrite(L, !digitalRead(L));//發(fā)送一組數(shù)據(jù)翻轉(zhuǎn)一次
}
else
{
DebugSerial.println("GPS DATA is not usefull!");
}
}
}
void parseGpsBuffer()
{
char *subString;
char *subStringNext;
if (Save_Data.isGetData)
{
Save_Data.isGetData = false;
DebugSerial.println("**************");
DebugSerial.println(Save_Data.GPS_Buffer);
for (int i = 0 ; i <= 6 ; i++)
{
if (i == 0)
{
if ((subString = strstr(Save_Data.GPS_Buffer, ",")) == NULL)
errorLog(12); //解析錯誤
}
else
{
subString++;
if ((subStringNext = strstr(subString, ",")) != NULL)
{
char usefullBuffer[2];
switch (i)
{
case 1: memcpy(Save_Data.UTCTime, subString, subStringNext - subString); break; //獲取UTC時間
case 2: memcpy(usefullBuffer, subString, subStringNext - subString); break; //獲取UTC時間
case 3: memcpy(Save_Data.latitude, subString, subStringNext - subString); break; //獲取緯度信息
case 4: memcpy(Save_Data.N_S, subString, subStringNext - subString); break; //獲取N/S
case 5: memcpy(Save_Data.longitude, subString, subStringNext - subString); break; //獲取緯度信息
case 6: memcpy(Save_Data.E_W, subString, subStringNext - subString); break; //獲取E/W
default: break;
}
subString = subStringNext;
Save_Data.isParseData = true;
if (usefullBuffer[0] == 'A')
Save_Data.isUsefull = true;
else if (usefullBuffer[0] == 'V')
Save_Data.isUsefull = false;
}
else
{
errorLog(13); //解析錯誤
}
}
}
}
}
void gpsRead() {
while (GpsSerial.available())
{
gpsRxBuffer[gpsRxCount] = GpsSerial.read();
if (gpsRxBuffer[gpsRxCount++] == '\n')
{
char* GPS_BufferHead;
char* GPS_BufferTail;
if ((GPS_BufferHead = strstr(gpsRxBuffer, "$GPRMC,")) != NULL || (GPS_BufferHead = strstr(gpsRxBuffer, "$GNRMC,")) != NULL )
{
if (((GPS_BufferTail = strstr(GPS_BufferHead, "\r\n")) != NULL) && (GPS_BufferTail > GPS_BufferHead))
{
memcpy(Save_Data.GPS_Buffer, GPS_BufferHead, GPS_BufferTail - GPS_BufferHead);
Save_Data.isGetData = true;
clrGpsRxBuffer();
}
}
clrGpsRxBuffer();
}
if (gpsRxCount == gpsRxBufferLength)clrGpsRxBuffer();
}
}
void clrGpsRxBuffer(void)
{
memset(gpsRxBuffer, 0, gpsRxBufferLength); //清空
gpsRxCount = 0;
}
unsigned int sendCommand(char *Command, char *Response, unsigned long Timeout, unsigned char Retry)
{
clrGprsRxBuffer();
for (unsigned char n = 0; n < Retry; n++)
{
DebugSerial.print("\r\n---------send AT Command:---------\r\n");
DebugSerial.write(Command);
GprsSerail.write(Command);
Time_Cont = 0;
while (Time_Cont < Timeout)
{
gprsReadBuffer();
if (strstr(gprsRxBuffer, Response) != NULL)
{
DebugSerial.print("\r\n==========receive AT Command:==========\r\n");
DebugSerial.print(gprsRxBuffer); //輸出接收到的信息
clrGprsRxBuffer();
return Success;
}
}
Time_Cont = 0;
}
DebugSerial.print("\r\n==========receive AT Command:==========\r\n");
DebugSerial.print(gprsRxBuffer);//輸出接收到的信息
clrGprsRxBuffer();
return Failure;
}
unsigned int sendCommandReceive2Keyword(char *Command, char *Response, char *Response2, unsigned long Timeout, unsigned char Retry)
{
clrGprsRxBuffer();
for (unsigned char n = 0; n < Retry; n++)
{
DebugSerial.print("\r\n---------send AT Command:---------\r\n");
DebugSerial.write(Command);
GprsSerail.write(Command);
Time_Cont = 0;
while (Time_Cont < Timeout)
{
gprsReadBuffer();
if (strstr(gprsRxBuffer, Response) != NULL && strstr(gprsRxBuffer, Response2) != NULL)
{
DebugSerial.print("\r\n==========receive AT Command:==========\r\n");
DebugSerial.print(gprsRxBuffer); //輸出接收到的信息
clrGprsRxBuffer();
return Success;
}
}
Time_Cont = 0;
}
DebugSerial.print("\r\n==========receive AT Command:==========\r\n");
DebugSerial.print(gprsRxBuffer);//輸出接收到的信息
clrGprsRxBuffer();
return Failure;
}
void Timer1_handler(void)
{
Time_Cont++;
}
void gprsReadBuffer() {
while (GprsSerail.available())
{
gprsRxBuffer[gprsBufferCount++] = GprsSerail.read();
if (gprsBufferCount == gprsRxBufferLength)clrGprsRxBuffer();
}
}
void clrGprsRxBuffer(void)
{
memset(gprsRxBuffer, 0, gprsRxBufferLength); //清空
gprsBufferCount = 0;
}

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