📄 main.c
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#include "option.h"
#include "def.h"
#include "44b.h"
#include "44blib.h"
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include<string.h>
#define R_1 1.86
#define PI 3.1415926f
#define R 6378137.0f /*地球半径 */
#define STAT_NUM 6 /*最大站点数*/
#define MaxBeepFreq 3000
U8 i=0,j=0,a=0,k=0;
char temp[65];
char Dis[17];
char time[16];
char date[20];
char pos1[20];
char pos2[17];
char Latd[18];
char Lotd[18];
char T[17];
char M[10];
long double H,x_d,y_d,xx,yy,xxx,yyy;
long double out,out1,out2,out_put;
long double distance,distance1,distance2,distance_min,distance_max;
int s=0;
volatile char which_int=0;
/********************************************************************
Function name : sruct
Description : 定义结构
Return type : struct
*********************************************************************/
struct position
{
char *name;
char *latitude; /* 纬度 */
char *longitude; /* 经度 */
}POS[4]={{" 师大院楼 ","2303.4396","11322.2671"},{" 师大生活区 ","2303.1549","11322.8740"},{" 星海音乐学院 ","2303.5999","11322.0000"},{" 中大生活区 ","2303.4396","11322.2671"}};
struct utc_time
{
unsigned char hh;
unsigned char mm;
unsigned char ss;
};
struct utc_date
{
unsigned char dd;
unsigned char mm;
unsigned char yy;
};
/********************************************************************
Function name : Get_MsgHeader
Description : 判断并且预存数据
Return type : int
*********************************************************************/
int Get_MsgHeader(void)
{
char h;
char dd;
char mm;
char yy;
char mes_id[6+1] = "$GPRMC"; /*抬头判断*/
unsigned char i=0;
unsigned char k=0,L=0,p=0,q=0,w=0;
while (i < 6)
{
if (mes_id[i] == Uart_Getch())
i++;
else
i = 0;
}
for ( i = 0; i < 65; i++) /* 数据传输速度比较快，所以预存 */
{
temp[i] = Uart_Getch();
}
h = (temp[1] - '0') * 10 + (temp[2] +8 -'0');
while(k<9)
{
time[k++]=h/10+'0';
time[k++]=h%10+'0';
time[k++]=':';
time[k++]=temp[3];
time[k++]=temp[4];
time[k++]=':';
time[k++]=temp[5];
time[k++]=temp[6];
time[k++]='@';
}
if (temp[12] == 'V') // 信息不可用则返回
{
return 0;
}
do
{
pos1[p++]=temp[14];
pos1[p++]=temp[15];
pos1[p++]=0xA1;
pos1[p++]=0xE3;
pos1[p++]=temp[16];
pos1[p++]=temp[17];
pos1[p++]=temp[18];
pos1[p++]=temp[19];
pos1[p++]=temp[20];
pos1[p++]=temp[21];
pos1[p++]=temp[22];
pos1[p++]=0;
pos1[p++]=temp[24];
pos1[p++]='@';
}while(p<5);
while(q<16)
{
pos2[q++]=temp[26];
pos2[q++]=temp[27];
pos2[q++]=temp[28];
pos2[q++]=0;
pos2[q++]=0xA1;
pos2[q++]=0xE3;
pos2[q++]=temp[29];
pos2[q++]=temp[30];
pos2[q++]=temp[31];
pos2[q++]=temp[32];
pos2[q++]=temp[33];
pos2[q++]=temp[34];
pos2[q++]=temp[35];
pos2[q++]=0;
pos2[q++]=temp[37];
pos2[q++]='@';
}
for(w=0,i=14;w<9&&i<23;w++,i++)
{
Latd[w]=temp[i];
}//纬度
for(w=0,i=26;w<10&&i<36;w++,i++)
{
Lotd[w]=temp[i];
}//经度
for (j = 3, i = 37; j != 0 && i < 65; i++) //判断日期信息的位置
{
if (temp[i] == ',')
{
j--;
}
}
if (i != 65)
{
dd = (temp[i++] - '0') * 10 + (temp[i++] - '0');
mm = (temp[i++] - '0') * 10 + (temp[i++] - '0');
yy = (temp[i++] - '0') * 10 + (temp[i++] - '0');
}
while(L<8)
{
date[L++]=2+'0';
date[L++]=0+'0';
date[L++]=yy%10+'0';
date[L++]=yy/10+'0';
date[L++]=0xc4;
date[L++]=0xea;
date[L++]=mm%10+'0';
date[L++]=mm/10+'0';
date[L++]=0xd4;
date[L++]=0xc2;
date[L++]=dd%10+'0';
date[L++]=dd/10+'0';
date[L++]=0xc8;
date[L++]=0xd5;
date[L++]='@';
}
return 1;
}
/********************************************************************
Function name :Change_String()
Description :取经纬度后小数部分
Return type :long double
*********************************************************************/
long double Change_String(char *str)
{
for(i=0;i<10;i++)
{
M[i]=*str++;
}
if((strlen(M))==0x0000000a)
{
out1=(M[3]-'0')*10+(M[4]-'0')+(M[6]-'0')*0.1+(M[7]-'0')*0.01+(M[8]-'0')*0.001+(M[9]-'0')*0.0001;
}
else if((strlen(M))==0x00000009)
{
out1=(M[2]-'0')*10+(M[3]-'0')+(M[5]-'0')*0.1+(M[6]-'0')*0.01+(M[7]-'0')*0.001+(M[8]-'0')*0.0001;
}
out_put=out1;
return out_put;
}
/********************************************************************
Function name :Compare_Float()
Description :比较经纬度差值范围
Return type :int
*********************************************************************/
int Compare_Float(long double x,long double y)
{
if((x>0.06)||(y>0.06))//-160
return 0;
else if((x>0.04)&&(x<0.06)||(y>0.04)&&(y<0.06))//-100m
return 1;
else if((x>0.02)&&(x<0.04)&&((y>0.02)&&(y<0.04)))//-60m
return 2;
else if((0<x)&&(x<0.02)&&(y<0.02))//-40m
return 3;
}
/********************************************************************
Function name : Chg_to_Radian
Description : 角度转换成弧度
Return type : long double
*********************************************************************/
long double Chg_to_Radian(char *str)
{
for(i=0;i<10;i++)
{
M[i]=*str++;
}
if((strlen(M))==0x0000000a)
{
out1=(M[0]-'0')*100+(M[1]-'0')*10+(M[2]-'0')*1;
out2=(M[3]-'0')*10+(M[4]-'0')+(M[6]-'0')*0.1+(M[7]-'0')*0.01+(M[8]-'0')*0.001+(M[9]-'0')*0.0001;
}
else if((strlen(M))==0x00000009)
{
out1=(M[0]-'0')*10+(M[1]-'0');
out2=(M[2]-'0')*10+(M[3]-'0')+(M[5]-'0')*0.1+(M[6]-'0')*0.01+(M[7]-'0')*0.001+(M[8]-'0')*0.0001;
}
out=out1+out2/60;
out = out * PI / 180;
return out;
}
/********************************************************************
Function name : Start_Beep
Description : 驱动蜂鸣器
Return type : void
*********************************************************************/
void Start_Beep(U16 Freq, U8 HiRatio)
{
if(Freq>MaxBeepFreq)
Freq = MaxBeepFreq;
if(HiRatio>100)
HiRatio = 100;
rTCON &= 0xffff0fff; // clear manual update bit, stop Timer2
rTCFG0 &= 0xffff00ff; // set Timer 2&3 prescaler 0
rTCFG1 &= 0xfffff0ff; // set Timer 2 MUX 1/16
rTCFG1 |= 0x00000300;
rTCNTB2 = MCLK/(Freq*16); //if set inverter off, when TCNT2<=TCMP2, TOUT is high, TCNT2>TCMP2, TOUT is low
rTCMPB2 = (rTCNTB2*(100-HiRatio))/100; //if set inverter on, when TCNT2<=TCMP2, TOUT is low, TCNT2>TCMP2, TOUT is high
rTCON |= 0x00002000; // manual update
rTCON &= 0xffff0fff; // clear manal update bit
rTCON |= 0x0000d000; // auto reload, inverter on, start Timer 2
}
/********************************************************************
Function name : StopBeepPwm
Description : 停响蜂鸣器
Return type : void
*********************************************************************/
void StopBeepPwm(void)
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