📄 iso14443a.lst
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C51 COMPILER V7.06 ISO14443A 05/01/2009 01:52:11 PAGE 1
C51 COMPILER V7.06, COMPILATION OF MODULE ISO14443A
OBJECT MODULE PLACED IN ISO14443A.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ISO14443A.C ROM(COMPACT) BROWSE DEBUG OBJECTEXTEND
stmt level source
1 #include "reg52.h"
2 #include <intrins.h>
3 #include <string.h>
4 #include <absacc.h>
5 #include "main.h"
6 #include "slrc500.h"
7 #include "iso14443a.h"
8 #define FSD 64 //RC500 FIFO BUFFER SIZE
9 extern struct TranSciveBuffer{unsigned char MfCommand;
10 unsigned int MfLength;
11 unsigned char MfData[64];
12 };
13
14 /////////////////////////////////////////////////////////////////////
15 //功 能：寻卡
16 //参数说明: req_code[IN]:寻卡方式
17 // 0x52 = 寻感应区内所有符合14443A标准的卡
18 // 0x26 = 寻未进入休眠状态的卡
19 // pTagType[OUT]：卡片类型代码
20 // 0x0A= Mifare_UltraLight
21 // 0x04 = Mifare_One(S50)
22 // 0x02 = Mifare_One(S70)
23 // 0x08 = Mifare_Pro
24 //返 回: 成功返回MI_OK
25 /////////////////////////////////////////////////////////////////////
26 char PcdRequest(unsigned char req_code,unsigned char *pTagType)
27 {
28 1 char status;
29 1 struct TranSciveBuffer MfComData;
30 1 struct TranSciveBuffer *pi;
31 1 pi = &MfComData;
32 1
33 1 WriteRawRC(RegChannelRedundancy,0x03); //无CRC，单独产生或者出现奇数的奇偶校验，
34 1 //奇偶校验位在每个字节后插入发送数据流中并会出现在接收数据流的每个字节后
35 1 ClearBitMask(RegControl,0x08); //该位指示Crypto1 单元关闭因此与卡的所有数据通信都不被加密
36 1 WriteRawRC(RegBitFraming,0x07); //TxLastBits 用于位方式帧的发送TxLastBits
37 1 //定义要发送的最后一个字节的位数目000指示最后字节的所有位都要发送在发送之后TxLastBits 自动清零
38 1 SetBitMask(RegTxControl,0x03); //关闭天线
39 1 PcdSetTmo(4);
40 1 MfComData.MfCommand = PCD_TRANSCEIVE;
41 1 MfComData.MfLength = 1;
42 1 MfComData.MfData[0] = req_code;
43 1
44 1 status = PcdComTransceive(pi);
45 1
46 1 if (!status)
47 1 {
48 2 if (MfComData.MfLength != 0x10)
49 2 { status = MI_BITCOUNTERR; }
50 2 }
51 1 *pTagType = MfComData.MfData[0];
52 1 return status;
53 1 }
54
55 /////////////////////////////////////////////////////////////////////
C51 COMPILER V7.06 ISO14443A 05/01/2009 01:52:11 PAGE 2
56 //防冲撞
57 //input: g_cSNR=存放序列号(4byte)的内存单元首地址
58 //output:status=MI_OK:成功
59 // 得到的序列号放入指定单元
60 /////////////////////////////////////////////////////////////////////
61 char PcdAnticoll(unsigned char *pSnr)
62 {
63 1 char status ;
64 1 unsigned char i;
65 1 unsigned char ucBits;
66 1 unsigned char ucBytes;
67 1 unsigned char snr_check = 0;
68 1 unsigned char ucCollPosition = 0;
69 1 unsigned char ucTemp;
70 1 unsigned char idata ucSNR[5] = {0, 0, 0, 0 ,0};
71 1 struct TranSciveBuffer MfComData;
72 1 struct TranSciveBuffer *pi;
73 1 pi = &MfComData;
74 1
75 1 WriteRawRC(RegDecoderControl,0x28);
76 1 ClearBitMask(RegControl,0x08);
77 1 WriteRawRC(RegChannelRedundancy,0x03);
78 1 PcdSetTmo(4);
79 1
80 1
81 1 do
82 1 {
83 2 ucBits = (ucCollPosition) % 8;
84 2 if (ucBits != 0)
85 2 {
86 3 ucBytes = ucCollPosition / 8 + 1;
87 3 WriteRawRC(RegBitFraming, (ucBits << 4) + ucBits);
88 3 }
89 2 else
90 2 {
91 3 ucBytes = ucCollPosition / 8;
92 3 }
93 2
94 2 MfComData.MfCommand = PCD_TRANSCEIVE;
95 2 MfComData.MfData[0] = PICC_ANTICOLL1;
96 2 MfComData.MfData[1] = 0x20 + ((ucCollPosition / 8) << 4) + (ucBits & 0x0F);
97 2 for (i=0; i<ucBytes; i++)
98 2 {
99 3 MfComData.MfData[i + 2] = ucSNR[i];
100 3 }
101 2 MfComData.MfLength = ucBytes + 2;
102 2
103 2 status = PcdComTransceive(pi);
104 2
105 2 ucTemp = ucSNR[(ucCollPosition / 8)];
106 2 if (status == MI_COLLERR)
107 2 {
108 3 for (i=0; i < 5 - (ucCollPosition / 8); i++)
109 3 {
110 4 ucSNR[i + (ucCollPosition / 8)] = MfComData.MfData[i+1];
111 4 }
112 3 ucSNR[(ucCollPosition / 8)] |= ucTemp;
113 3 ucCollPosition = MfComData.MfData[0];
114 3 }
115 2 else if (status == MI_OK)
116 2 {
117 3 for (i=0; i < (MfComData.MfLength / 8); i++)
C51 COMPILER V7.06 ISO14443A 05/01/2009 01:52:11 PAGE 3
118 3 {
119 4 ucSNR[4 - i] = MfComData.MfData[MfComData.MfLength/8 - i - 1];
120 4 }
121 3 ucSNR[(ucCollPosition / 8)] |= ucTemp;
122 3 }
123 2 } while (status == MI_COLLERR);
124 1
125 1
126 1 if (status == MI_OK)
127 1 {
128 2 for (i=0; i<4; i++)
129 2 {
130 3 *(pSnr+i) = ucSNR[i];
131 3 snr_check ^= ucSNR[i];
132 3 }
133 2 if (snr_check != ucSNR[i])
134 2 { status = MI_COM_ERR; }
135 2 }
136 1
137 1 ClearBitMask(RegDecoderControl,0x20);
138 1 return status;
139 1 }
140
141 /////////////////////////////////////////////////////////////////////
142 //选定一张卡
143 //input:g_cSNR=序列号
144 /////////////////////////////////////////////////////////////////////
145 char PcdSelect(unsigned char *pSnr,unsigned char *pSize)
146 {
147 1 unsigned char i;
148 1 char status;
149 1 unsigned char snr_check = 0;
150 1 struct TranSciveBuffer MfComData;
151 1 struct TranSciveBuffer *pi;
152 1 pi = &MfComData;
153 1
154 1 WriteRawRC(RegChannelRedundancy,0x0F);
155 1 ClearBitMask(RegControl,0x08);
156 1 PcdSetTmo(4);
157 1
158 1 MfComData.MfCommand = PCD_TRANSCEIVE;
159 1 MfComData.MfLength = 7;
160 1 MfComData.MfData[0] = PICC_ANTICOLL1;
161 1 MfComData.MfData[1] = 0x70;
162 1 for (i=0; i<4; i++)
163 1 {
164 2 snr_check ^= *(pSnr+i);
165 2 MfComData.MfData[i+2] = *(pSnr+i);
166 2 }
167 1 MfComData.MfData[6] = snr_check;
168 1
169 1 status = PcdComTransceive(pi);
170 1
171 1 if (status == MI_OK)
172 1 {
173 2 if (MfComData.MfLength != 0x8)
174 2 { status = MI_BITCOUNTERR; }
175 2 else
176 2 { *pSize = MfComData.MfData[0]; }
177 2 }
178 1
179 1 return status;
C51 COMPILER V7.06 ISO14443A 05/01/2009 01:52:11 PAGE 4
180 1 }
181
182
183 ///////////////////////////////////////////////////////////////
184 // Key loading into the MF RC500's EEPROM
185 ///////////////////////////////////////////////////////////////
186 char M500PcdLoadKeyE2(unsigned char key_type,
187 unsigned char sector,
188 unsigned char *uncoded_keys)
189 {
190 1 signed char status = MI_OK;
191 1 unsigned int e2addr = 0x80 + sector * 0x18;
192 1 unsigned char idata coded_keys[12];
193 1
194 1 if (key_type == PICC_AUTHENT1B)
195 1 {
196 2 e2addr += 12; // key B offset
197 2 }
198 1 if ((status = ChangeCodeKey(uncoded_keys,coded_keys)) == MI_OK)
199 1 {
200 2 status = PcdWriteE2(e2addr,12,coded_keys);
201 2 }
202 1 return status;
203 1 }
204
205
206 /////////////////////////////////////////////////////////////////////
207 //将Mifare_One卡密钥转换为RC500接收格式
208 //input: uncoded=6字节未转换的密钥
209 //output:coded=12字节转换后的密钥
210 /////////////////////////////////////////////////////////////////////
211 char ChangeCodeKey(unsigned char *pUncoded,unsigned char *pCoded)
212 {
213 1 unsigned char cnt=0;
214 1 unsigned char ln=0;
215 1 unsigned char hn=0;
216 1
217 1 for (cnt=0; cnt<6; cnt++)
218 1 {
219 2 ln = pUncoded[cnt] & 0x0F;
220 2 hn = pUncoded[cnt] >> 4;
221 2 pCoded[cnt*2+1] = (~ln<<4) | ln;
222 2 pCoded[cnt*2] = (~hn<<4) | hn;
223 2 }
224 1 return MI_OK;
225 1 }
226
227 /*
228 ///////////////////////////////////////////////////////////////////////
229 // Key loading into the MF RC500's EEPROM
230 // 校验卡密码(E2)
231 ///////////////////////////////////////////////////////////////////////
232 char M500PiccAuthE2( unsigned char idata auth_mode,unsigned char idata *snr,
233 unsigned char idata keynr,unsigned char idata block)
234
235 {
236 char idata status = MI_OK;
237 unsigned int e2addr = 0x80 + keynr * 0x18;
238 if (auth_mode == PICC_AUTHENT1B)
239 {
240 e2addr += 12;
241 }
C51 COMPILER V7.06 ISO14443A 05/01/2009 01:52:11 PAGE 5
242
243 status=PcdLoadKeyE2(e2addr);
244 return status;
245 }
246 */
247
248 /////////////////////////////////////////////////////////////////////
249 //将存在RC500的EEPROM中的密钥匙调入RC500的FIFO
250 //input: startaddr=EEPROM地址
251 /////////////////////////////////////////////////////////////////////
252 char PcdLoadKeyE2( unsigned char idata auth_mode,unsigned char idata keynr)
253 {
254 1 char status;
255 1 struct TranSciveBuffer MfComData;
256 1 struct TranSciveBuffer *pi;
257 1 unsigned char *e2addrbuf;
258 1 unsigned int e2addr = 0x80 + keynr * 0x18;
259 1 e2addrbuf = (unsigned char *)&e2addr;
260 1 pi = &MfComData;
261 1 if (auth_mode == PICC_AUTHENT1B)
262 1 {
263 2 e2addr += 12;
264 2 }
265 1
266 1 memcpy(MfComData.MfData,e2addrbuf,2);
267 1 MfComData.MfData[2] = MfComData.MfData[0];
268 1 MfComData.MfData[0] = MfComData.MfData[1];
269 1 MfComData.MfData[1] = MfComData.MfData[2];
270 1
271 1 MfComData.MfCommand = PCD_LOADKEYE2;
272 1 MfComData.MfLength = 2;
273 1 // MfComData.MfData[0] = startaddr & 0xFF;
274 1 // MfComData.MfData[1] = (startaddr >> 8) & 0xFF;
275 1
276 1 status = PcdComTransceive(pi);
277 1
278 1 return status;
279 1 }
280
281
282
283 /////////////////////////////////////////////////////////////////////
284 //功能：将已转换格式后的密钥送到RC500的FIFO中
285 //input:keys=密钥
286 /////////////////////////////////////////////////////////////////////
287 char PcdAuthKey(unsigned char *pKeys)
288 {
289 1 char status;
290 1 struct TranSciveBuffer MfComData;
291 1 struct TranSciveBuffer *pi;
292 1 pi = &MfComData;
293 1
294 1 PcdSetTmo(4);
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