📄 main.lst
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C51 COMPILER V7.50 MAIN 07/20/2005 09:23:27 PAGE 1
C51 COMPILER V7.50, COMPILATION OF MODULE MAIN
OBJECT MODULE PLACED IN main.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE main.c BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <sst/SST89x5x4.H>
2 #include <string.h>
3 #include <stdio.h>
4 //PCA REGS
5
6 sfr CH=0xF9; //PCA COUNER/TIMER
7 sfr CL=0xE9;
8
9 sfr CCON=0xD8;
10 sfr CMOD=0xD9;
11
12 sfr CCAPM0=0xDA;
13 sfr CCAPM1=0xDB;
14 sfr CCAPM2=0xDC;
15 sfr CCAPM3=0xDD;
16 sfr CCAPM4=0xDE;
17
18 sfr CCAP0H=0xFA;
19 sfr CCAP0L=0xEA;
20 sfr CCAP1H=0xFB;
21 sfr CCAP1L=0xEB;
22 sfr CCAP2H=0xFC;
23 sfr CCAP2L=0xEC;
24 sfr CCAP3H=0xFD;
25 sfr CCAP3L=0xED;
26 sfr CCAP4H=0xFE;
27 sfr CCAP4L=0xEE;
28
29 sbit CCF0=CCON^0;
30 sbit CCF4=CCON^4;
31 sbit CR=CCON^6;
32
33
34 // This program is designed to use the PCA module to calculate the width of a
35 // detected pulse. The pulse must begin with a rising edge and end with a falling
36 // edge on the CEX0 pin.
37 // The HEADER FILE “SST89X5X4.h” is an SST proprietary header file that defines SST’s SFRs.
38 // This file can be found on the SST website, or the BSL Demo Kit.
39 bit flag = 0; // Rising or falling edge flag.
40 unsigned int pulse_width = 0x00; // Final pulse width calculation is stored here.
41 unsigned int capture1 = 0x00; // Rising edge captured here.
42 unsigned int capture2 = 0x00; // Falling edge captured here.
43 unsigned char buf_p=0,buf_p2=0;
44 unsigned char idata dat[129],iddat[10];
45
46 unsigned char code bitcode[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
47
48 /*
49 void PCA_ISR() interrupt 6 // PCA Interrupt Service routine
50 {
51 unsigned int temp;
52
53 CCF4 = 0; // Clear the PCA flag
54
55 if (flag == 0)
C51 COMPILER V7.50 MAIN 07/20/2005 09:23:27 PAGE 2
56 {
57 capture1 = CCAP4L | (CCAP4H << 8); // If positive edge, store in
58
59 CCAPM4 = 0x11; // capture1. Setup module
60
61 flag = 1; // 0 for capturing falling edge
62
63 temp=(capture1-capture2)/100;
64
65 }
66 else
67 {
68 capture2 = CCAP4L | (CCAP4H << 8); // Capture falling edge
69
70 CCAPM4 = 0x21; // Setup module 0 for capturing rising edge.
71
72 flag = 0; // Reset flag
73
74 temp=(capture2-capture1)/100;
75
76 }
77
78 if(temp<2)return;
79 if(temp>12)return;
80
81 if( temp<6 ) //分解数据,脉宽判断
82 dat[buf_p++]=flag;
83
84 else
85 {
86 dat[buf_p++]=flag;
87 dat[buf_p++]=flag;
88
89
90
91 }
92
93 if( buf_p< 17) //起始位判断
94 if(dat[buf_p-1] != ( (buf_p-1) & 1))
95 buf_p=0;
96
97 if( buf_p >=128 )
98 {
99 buf_p=128;
100 CCAPM4=0;
101 CMOD=0;
102 CR = 0;
103 IE = 0x00;
104 }
105 }
106 */
107 void PCA_intr()interrupt 6 using 1
108 {
109 1
110 1 CCF4=0;
111 1 if(flag==0)
112 1 {
113 2 capture1 = CCAP4L|(CCAP4H<<8);
114 2 CCAPM4=0x11; //设置为下降沿中断
115 2 flag=1;
116 2 pulse_width=(capture1-capture2)/100;
117 2 }
C51 COMPILER V7.50 MAIN 07/20/2005 09:23:27 PAGE 3
118 1 else
119 1 {
120 2 capture2=CCAP4L|(CCAP4H<<8);
121 2 pulse_width=(capture2-capture1)/100;
122 2 CCAPM4 = 0x21; //设置为上升沿中断
123 2 flag=0;
124 2
125 2 }
126 1
127 1
128 1
129 1 if((pulse_width<2)||(pulse_width>12))
130 1 return;
131 1
132 1
133 1 if( pulse_width<6 ) //分解数据,脉宽判断
134 1 dat[buf_p++]=flag;
135 1 else
136 1 {
137 2 dat[buf_p++]=flag;
138 2 dat[buf_p++]=flag;
139 2 }
140 1
141 1 if( buf_p< 17) //起始位判断
142 1 {
143 2 if( dat[buf_p-1] != ( (buf_p-1) & 1)) //如果不是1，剔除
144 2 buf_p=0;
145 2 }
146 1 if( buf_p >=128 )
147 1 {
148 2 buf_p=128;
149 2 CCAPM4=0;
150 2 CMOD=0;
151 2 CR = 0;
152 2 IE = 0x00; //停止中断使能
153 2 }
154 1
155 1
156 1 }
157
158
159 /*
160 bit check_emid(unsigned char *dat,unsigned char *out,unsigned int len)
161 {
162 unsigned int i,j,k;
163 unsigned char result=0;
164 // unsigned char check;
165 unsigned char code head[]={1,1,1,1,1,1,1,1,0};
166
167 if( memcmp(head,dat,9) != 0 )return 0;
168
169 i=8;
170
171 for(j=0;j<10;j++)
172 {
173 result=0;
174
175 for(k=0;k<4;k++)
176 {
177 result <<=1;
178 if(dat[i+j*5+k])
179 result |=0x01;
C51 COMPILER V7.50 MAIN 07/20/2005 09:23:27 PAGE 4
180 }
181
182 if(!(j % 2))out[j/2]=result;
183 else
184 {
185 out[j/2]=(out[j/2]<<4)+result;
186 }
187 }
188
189 return 1;
190 }*/
191 bit check_emid(unsigned char *dat,unsigned char *out )
192 {
193 1 unsigned int i,j,k;
194 1 unsigned char result=0;
195 1
196 1 unsigned char code head[]={1,1,1,1,1,1,1,1,0};
197 1
198 1 if( memcmp(head,dat,9) != 0 )
199 1 return 0;
200 1
201 1 i=8;
202 1
203 1 for(j=0;j<10;j++)
204 1 {
205 2 result=0;
206 2
207 2 for(k=0;k<4;k++)
208 2 {
209 3 result <<=1;
210 3 if(dat[i+j*5+k])
211 3 result |=0x01;
212 3 }
213 2
214 2 if(!(j % 2))
215 2 out[j/2]=result;
216 2 else
217 2 {
218 3 out[j/2]=(out[j/2]<<4)+result; //2组4bit 组成一个字节
219 3 }
220 2 }
221 1
222 1 return 1;
223 1 }
224
225 void pcaint()
226 {
227 1 CMOD = 0x01; //Setting up the PCA counter
228 1 CH = 0x00;
229 1 CL = 0x00;
230 1 CCAPM4 = 0x21; // Setup module zero in capture mode
231 1 flag = 0;
232 1 IE = 0xC0; // Enable PCA interrupt
233 1 CR = 1; // Start PCA counter
234 1 EA=1;
235 1
236 1
237 1
238 1 }
239
240 void GetID() //读卡
241 {
C51 COMPILER V7.50 MAIN 07/20/2005 09:23:27 PAGE 5
242 1 unsigned char i;
243 1 unsigned long ID;
244 1
245 1 while(buf_p !=128);
246 1
247 1 for(i=0;i<65;i++)
248 1 {
249 2 dat[i]=(dat[i*2]==0) && (dat[i*2+1]==1);
250 2
251 2 }
252 1
253 1
254 1 if( check_emid(dat,iddat ) )
255 1 {
256 2 ID=*(unsigned long*)(iddat+1); //获取的ID号放在iddat中，用一个LONG来表示
257 2 putchar(ID);
258 2 putchar(ID);
259 2 }
260 1
261 1
262 1 CCAPM4 = 0x21; // Setup module zero in capture mode
263 1 flag = 0;
264 1 IE = 0xC0; // Enable PCA interrupt
265 1 CR = 1; // Start PCA counter
266 1 EA=1;
267 1 buf_p=0;
268 1
269 1
270 1
271 1 }
272 void main()
273 {
274 1
275 1
276 1 pcaint();
277 1 while (1) // Software trap
278 1 {
279 2
280 2 GetID();
281 2
282 2 }
283 1 }
284
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 524 ----
CONSTANT SIZE = 17 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 8 17
IDATA SIZE = 139 ----
BIT SIZE = 1 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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