📄 1602gps.lst
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C51 COMPILER V6.23a 1602GPS 06/16/2008 13:14:49 PAGE 1
C51 COMPILER V6.23a, COMPILATION OF MODULE 1602GPS
OBJECT MODULE PLACED IN 1602gps.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 1602gps.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 /*************************************
2 SUPER TANKING显示程序
3 作者：
4 ***************************************/
5
6 //线路连接见技术报告内原理图
7
8 #include <reg51.h>
9 #include "1602.h"
10
11 sbit SPD_TYPE=P2^3;
12 sbit KEY1=P2^4;
13
14 /*
15 sbit GPS_SPD=P1^4;
16 sbit KEY1=P1^6;
17 sbit SPD_TYPE=P1^5;
18 */
19
20
21 char code TIME_AREA= 8; //时区
22
23 //GPS数据存储数组
24 unsigned char JD[10]; //经度
25 unsigned char JD_a; //经度方向
26 unsigned char WD[9]; //纬度
27 unsigned char WD_a; //纬度方向
28 unsigned char time[6]; //时间
29 unsigned char speed[5]; //速度
30 unsigned char high[6]; //高度
31 unsigned char angle[5]; //方位角
32 unsigned char use_sat[2]; //使用的卫星数
33 unsigned char total_sat[2]; //天空中总卫星数
34 unsigned char lock; //定位状态
35
36 //串口中断需要的变量
37 unsigned char seg_count; //逗号计数器
38 unsigned char dot_count; //小数点计数器
39 unsigned char byte_count; //位数计数器
40 unsigned char cmd_number; //命令类型
41 unsigned char mode; //0：结束模式，1：命令模式，2：数据模式
42 unsigned char buf_full; //1：整句接收完成，相应数据有效。0：缓存数据无效。
43 unsigned char cmd[5]; //命令类型存储数组
44
45 //显示需要的变量
46 unsigned int dsp_count; //刷新次数计数器
47 unsigned char time_count;
48 bit page;
49 bit spd_type;
50
51 void sys_init(void);
52 bit chk_key(void);
53
54 main()
55 {
C51 COMPILER V6.23a 1602GPS 06/16/2008 13:14:49 PAGE 2
56 1 unsigned char i;
57 1 char Bhour;
58 1 unsigned int Knots;
59 1 sys_init();
60 1
61 1 while(1){
62 2
63 2 if(buf_full==0) //无GPS信号时
64 2 {
65 3 dsp_count++;
66 3 if(dsp_count>=65000){
67 4 LCD_cls(); //清屏
68 4 LCD_write_string(0,0,"No GPS connect..");
69 4 while(buf_full==0);
70 4 LCD_cls();
71 4 dsp_count=0;
72 4 }
73 3 }
74 2 else{ //有GPS信号时
75 3 if(chk_key()){ //检测到按键切换显示
76 4 page=!page;
77 4 LCD_cls();
78 4 }
79 3
80 3 if(!page){ //页面1
81 4 if(buf_full|0x01){ //GGA语句
82 5 if(lock=='0'){ //如果未定位
83 6 LCD_write_string(0,0,"*---.--.---- ");
84 6 LCD_write_string(0,1,"* --.--.---- ");
85 6 }else{ //如果已定位
86 6 LCD_write_char(0,0,JD_a); //显示经度
87 6 for(i=0;i<3;i++){
88 7 LCD_write_char(i+1,0,JD[i]);
89 7 }
90 6 LCD_write_char(4,0,'.');
91 6 for(i=3;i<10;i++){
92 7 LCD_write_char(i+2,0,JD[i]);
93 7 }
94 6
95 6 LCD_write_char(0,1,WD_a); //显示纬度
96 6 LCD_write_char(1,1,' ');
97 6 for(i=0;i<2;i++){
98 7 LCD_write_char(i+2,1,WD[i]);
99 7 }
100 6 LCD_write_char(4,1,'.');
101 6 for(i=2;i<9;i++){
102 7 LCD_write_char(i+3,1,WD[i]);
103 7 } }
104 5 LCD_write_char(14,0,use_sat[0]); //显示接收卫星数
105 5 LCD_write_char(15,0,use_sat[1]);
106 5 buf_full&=~0x01;
107 5 dsp_count=0;
108 5 }
109 4 if(buf_full|0x02){ //GSV语句
110 5 LCD_write_char(14,1,total_sat[0]);
111 5 LCD_write_char(15,1,total_sat[1]);
112 5 buf_full&=~0x02;
113 5 dsp_count=0;
114 5 }
115 4 if(buf_full|0x04){
116 5 buf_full&=~0x04;
117 5 dsp_count=0;
C51 COMPILER V6.23a 1602GPS 06/16/2008 13:14:49 PAGE 3
118 5 }
119 4 }
120 3 else{ //页面2
121 4 if(buf_full|0x01){ //GGA语句
122 5 buf_full&=~0x01;
123 5 dsp_count=0;
124 5 }
125 4 if(buf_full|0x02){
126 5 buf_full&=~0x02;
127 5 dsp_count=0;
128 5 }
129 4 if(buf_full|0x04){ //RMC语句
130 5 Bhour=((time[0]-0x30)*10+time[1]-0x30)+TIME_AREA;
131 5 if(Bhour>=24){
132 6 Bhour-=24;
133 6 }else if(Bhour<0){
134 6 Bhour+=24;
135 6 }
136 5
137 5 for(i=0;i<4;i++){
138 6 LCD_write_char(i+1,1,high[i]);
139 6 }
140 5 LCD_write_char(8,1,Bhour/10+0x30);
141 5 LCD_write_char(9,1,Bhour%10+0x30);
142 5 LCD_write_char(10,1,':');
143 5 LCD_write_char(11,1,time[2]);
144 5 LCD_write_char(12,1,time[3]);
145 5 LCD_write_char(13,1,':');
146 5 LCD_write_char(14,1,time[4]);
147 5 LCD_write_char(15,1,time[5]);
148 5 LCD_write_char(0,1,'H');
149 5 LCD_write_char(5,1,'M');
150 5 LCD_write_char(7,1,'T');
151 5 if(spd_type){
152 6 LCD_write_string(5,0,"km/h A");
153 6 }else{
154 6 LCD_write_string(5,0,"knot A");
155 6 }
156 5 if(lock=='0'){ //如果未定位
157 6 LCD_write_string(0,0,"---.-");
158 6 LCD_write_string(11,0,"---.-");
159 6 }else{ //已经定位
160 6 if(spd_type){ //km/h显示
161 7 for(i=0;i<5;i++){
162 8 LCD_write_char(i,0,speed[i]);
163 8 }
164 7 }else{ //knot显示
165 7 Knots= (((speed[0]-0x30)*1000
166 7 +(speed[1]-0x30)*100
167 7 +(speed[2]-0x30)*10
168 7 +(speed[4]-0x30))*1000)/1852;
169 7 LCD_write_char(0,0,Knots/1000+0x30);
170 7 LCD_write_char(1,0,(Knots%1000)/100+0x30);
171 7 LCD_write_char(2,0,(Knots%100)/10+0x30);
172 7 LCD_write_char(3,0,'.');
173 7 LCD_write_char(4,0,Knots%10+0x30);
174 7 }
175 6 for(i=0;i<5;i++){
176 7 LCD_write_char(11+i,0,angle[i]);
177 7 }
178 6 }
179 5 buf_full&=~0x04;
C51 COMPILER V6.23a 1602GPS 06/16/2008 13:14:49 PAGE 4
180 5 dsp_count=0;
181 5 }
182 4 }
183 3 }
184 2 }
185 1 }
186
187 bit chk_key(void)
188 {
189 1 if(!KEY1){
190 2 delayms(10);
191 2 if(!KEY1){
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