arduino实现的neo-6m的gps模块spi接口的oled显示程序 -

//此处为了兼容其他的多串口Arduino板子
#define GpsSerial Serial
#define DebugSerial Serial//用的是同一串口
#include "U8glib.h"
int L = 13; //LED指示灯引脚
U8GLIB_SSD1306_128X64 u8g(13, 11, 10, 9); // SW SPI Com: SCK = 13, MOSI = 11, CS = 10, A0 = 9
struct
{
char GPS_Buffer[80];
bool isGetData; //是否获取到GPS数据
bool isParseData; //是否解析完成
char UTCT[11]; //UTC时间
char weidu[11]; //纬度
char N_S[2]; //N/S
char jingdu[12]; //经度
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 ii = 0;
void setup() //初始化内容
{
GpsSerial.begin(9600); //定义波特率9600，和我们店铺的GPS模块输出的波特率一致
DebugSerial.begin(9600);
DebugSerial.println("GPS information");
DebugSerial.println("Please wating...");
Save_Data.isGetData = false;
Save_Data.isParseData = false;
Save_Data.isUsefull = false;
}
void loop() //主循环
{
gpsRead(); //获取GPS数据
parseGpsBuffer();//解析GPS数据
printGpsBuffer();//输出解析后的数据
// DebugSerial.println("\r\n\r\nloop\r\n\r\n");
// picture loop
u8g.firstPage();
do {
draw();
} while( u8g.nextPage() );
// rebuild the picture after some delay
delay(5000);
}
void draw(void) {
// graphic commands to redraw the complete screen should be placed here
// u8g.setFont(u8g_font_unifont);
//u8g.setPrintPos(0, 20);
// call procedure from base class, http://arduino.cc/en/Serial/Print
//u8g.print("Hello World!");
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 10);
u8g.print("UTCT = ");
u8g.setPrintPos(50, 10);
u8g.print(Save_Data.UTCT);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 20);
u8g.print("weidu = ");
u8g.setPrintPos(65, 20);
u8g.print(Save_Data.weidu);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 30);
u8g.print("N_S = ");
u8g.setPrintPos(45, 30);
u8g.print(Save_Data.N_S);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 40);
u8g.print("jingdu = ");
u8g.setPrintPos(65, 40);
u8g.print(Save_Data.jingdu);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(0, 50);
u8g.print("E_W = ");
u8g.setPrintPos(45, 50);
u8g.print(Save_Data.E_W);
u8g.setFont(u8g_font_unifont);
u8g.setPrintPos(5, 60);
u8g.print("GPS Information ");
}
void errorLog(int num)
{
DebugSerial.print("ERROR");
DebugSerial.println(num);
while (1)
{
digitalWrite(L, HIGH);
delay(300);
digitalWrite(L, LOW);
delay(300);
}
}
void printGpsBuffer()//输出解析后的数据
{
if (Save_Data.isParseData)
{
Save_Data.isParseData = false;
DebugSerial.print("Save_Data.UTCT = ");
DebugSerial.println(Save_Data.UTCT);
if(Save_Data.isUsefull)
{
Save_Data.isUsefull = false;
DebugSerial.print("Save_Data.weidu = ");
DebugSerial.println(Save_Data.weidu);
DebugSerial.print("Save_Data.N_S = ");
DebugSerial.println(Save_Data.N_S);
DebugSerial.print("Save_Data.jingdu = ");
DebugSerial.println(Save_Data.jingdu);
DebugSerial.print("Save_Data.E_W = ");
DebugSerial.println(Save_Data.E_W);
}
else
{
DebugSerial.println("data is wrong");
}
}
}
void parseGpsBuffer()//解析GPS数据
{
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(1); //解析错误
}
else
{
subString++;
if ((subStringNext = strstr(subString, ",")) != NULL)
{
char usefullBuffer[2];
switch(i)
{
case 1:memcpy(Save_Data.UTCT, subString, subStringNext - subString);break; //获取UTC时间
case 2:memcpy(usefullBuffer, subString, subStringNext - subString);break; //获取UTC时间
case 3:memcpy(Save_Data.weidu, subString, subStringNext - subString);break; //获取纬度信息
case 4:memcpy(Save_Data.N_S, subString, subStringNext - subString);break; //获取N/S
case 5:memcpy(Save_Data.jingdu, subString, subStringNext - subString);break; //获取经度度信息
case 6:memcpy(Save_Data.E_W, subString, subStringNext - subString);break; //获取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(2); //解析错误
}
}
}
}
}
void gpsRead() //获取GPS数据
{
while (GpsSerial.available())
{
gpsRxBuffer[ii++] = GpsSerial.read();
if (ii == gpsRxBufferLength)clrGpsRxBuffer();
}
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))//"\r\n"回车换行的符号
{
memcpy(Save_Data.GPS_Buffer, GPS_BufferHead, GPS_BufferTail - GPS_BufferHead);
Save_Data.isGetData = true;
clrGpsRxBuffer();
}
}
}
void clrGpsRxBuffer(void)
{
memset(gpsRxBuffer, 0, gpsRxBufferLength); //清空
ii = 0;
}

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