📄 m500auc.lst
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C51 COMPILER V7.02a M500AUC 07/24/2003 11:05:36 PAGE 1
C51 COMPILER V7.02a, COMPILATION OF MODULE M500AUC
OBJECT MODULE PLACED IN M500AuC.obj
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE source\M500AuC.c LARGE BROWSE ORDER NOAREGS DEBUG OBJECTEXTEND PRINT(.\M500
-AuC.lst) OBJECT(M500AuC.obj)
stmt level source
1 /****************************************************************************
2 * File: M500AuC.c
3 * Version: 1.0
4 * Created: 2003.07.08
5 * Last Change: 2003.07.08
6 * Author: dong yongde , refer to philips
7 * Company: LANTOON TECH
8 * Compiler: KEIL C51 uVision2 V2.32
9 * Description: Low level I/O functions for RC500
10 ****************************************************************************/
11 #define DLL_EXPORT // library source module definition
12 //#include "p89c51rx.h"
13 #include "reg52.h"
14 #include "Mfreg500.h"
15 #include "M500Auc.h"
16 #include "ucio.h"
17 #include "timer.h"
18
19 #include <string.h>
20 //#include <stdio.h>
21 //#include "main.h"
22
23 #define ReadRawIO ReadIO
24 #define WriteRawIO WriteIO
25
26 ////////////////////////////////////////////////////////////////////////////////
27 // M O D U L E D E F I N I T I O N
28 ////////////////////////////////////////////////////////////////////////////////
29 // COMMENT: This library module is modified from the original source code for a
30 // microcontroller C164 CI, to suit the general purpose 8051 mcu.
31 // The source can be ported to other platforms very easily.
32 // The communication channel to the RC500 reader IC is assumed to be
33 // unknown. All data is written with the generic IO functions
34 // of the module ReaderIO.h. In our case the reader module is
35 // connected via memory mapped io at base address 0x7f00.
36 // The interrupt pin of the reader IC is assumed to be connected to
37 // the fast external interrupt pin INT0# (active low) and the reset
38 // pin of the reader IC should be connected to a dedicated port pin
39 // (Port3: Pin: 3).
40 // In this configuration, a reset of the reader module is independend
41 // from the reset of the microcontroller.
42 // In order to generate communication timeouts,
43 // general purpose timer 2 of the microcontroller is used. This
44 // timer need not to be initialised in advance. Before every usage
45 // the timer is completely initialised in each function.
46 // Non of the timers is essential for the functionality of the reader
47 // module, but are helpful furing software development. All protocoll
48 // relevant timing constraints are generated
49 // by the internal timer of the reader module.
50 //
51 // Some explanations to the programming method of this library.
52 // There are three kind of functions coded in this module.
53 // a) internal functions, which have no prototypes in a header
54 // file and are not intended to be used outside of this file
C51 COMPILER V7.02a M500AUC 07/24/2003 11:05:36 PAGE 2
55 // b) commands, which are intended for the reader module itself
56 // c) commands, which are intended for any tag in the rf field.
57 // These commands are send to the reader and the reader module
58 // transmitts the data to the rf interface.
59 // Commands for the reader and for the tag have the appropriate
60 // prefix (PCD for proximity coupled device or reader module
61 // PICC for proximity integrated circuit card or tag)
62 // and their protypes are defined in the header file.
63 // Each command for a PICC consists of a PCD command. Therefore
64 // the function M500PcdCmd is very important for the understanding
65 // of the communication.
66 //
67 // The basic functionality is provided by the interrupt service
68 // routine (ISR), which closely works together with the function
69 // M500PcdCmd. All kinds of interrupts are serviced by the
70 // same ISR.
71
72
73 // inline structure in order to reset the communication channel between
74 // function and ISR
75 #define ResetInfo(info) \
76 info.cmd = 0; \
77 info.status = MI_OK;\
78 info.irqSource = 0; \
79 info.nBytesSent = 0; \
80 info.nBytesToSend = 0; \
81 info.nBytesReceived = 0; \
82 info.nBitsReceived = 0; \
83 info.collPos = 0;
84
85 // struct definition for a communication channel between function and ISR
86 typedef struct
87 {
88 unsigned char cmd; //!< command code
89 char status; // communication status
90 unsigned char nBytesSent; // how many bytes already sent
91 unsigned char nBytesToSend; // how many bytes to send
92 unsigned char nBytesReceived;// how many bytes received
93 unsigned short nBitsReceived; // how many bits received
94 unsigned char irqSource; // which interrupts have occured
95 unsigned char collPos; // at which position occured a
96 // collision
97 } MfCmdInfo;
98
99 // modul variables
100 //extern unsigned char xdata *GpBase;
101
102 static unsigned char idata MFIFOLength = DEF_FIFO_LENGTH; // actual FIFO length
103
104 //static unsigned char xdata MKeys[16][12]; // storage for authentication keys
105 // in order to provide a calling
106 // compatible interface to old libraries
107 // Other reader modules keep several sets
108 // of keys in an E2PROM. In this case,
109 // these keys are stored in the uC and
110 // transfered to the reader module
111 // before authentication
112
113 // Infomation concerning data processing
114 // send buffer for general use
115 static volatile unsigned char xdata MSndBuffer[SND_BUF_LEN];
116 // receive buffer for general use
C51 COMPILER V7.02a M500AUC 07/24/2003 11:05:36 PAGE 3
117 static volatile unsigned char xdata MRcvBuffer[RCV_BUF_LEN];
118 // info struct for general use
119 static volatile MfCmdInfo MInfo;
120
121 // Interrupt service routine
122 // Variable in order to exchange data between function and ISR
123 static volatile MfCmdInfo *MpIsrInfo = 0;
124 // ISR send buffer
125 static volatile unsigned char *MpIsrOut = 0;
126 // ISR receive buffer
127 static volatile unsigned char *MpIsrIn = 0;
128
129 // storage of the last selected serial number including check byte.
130 //For multi level serial numbers, only the first 4 bytes are stored.
131 unsigned char MLastSelectedSnr[5];
132
133 // Timer 2
134 extern bit T2IR ; // Timer2 timeout flag
135 extern unsigned int CountDown ;// Timeout counter with 50us resolution
136
137 sbit RC500RST = P3^5;
138 //sbit LED = P3^4;
139
140 ///////////////////////////////////////////////////////////////////////////////
141 // Prototypes for local functions
142 ///////////////////////////////////////////////////////////////////////////////
143
144
145 // _____________________________________________________________________________
146 //
147 // FUNCTION: M500PcdSetTmo
148 // IN: tmoLength 1 ... 1.0 ms timeout periode
149 // 2 ... 1.5 ms timeout periode
150 // 3 ... 6.0 ms timeout periode
151 // 4 ... 9.6 ms timeout period
152 // 5 ... 38.5 ms timeout period
153 // 6 ... 154 ms timeout period
154 // 7 ... 616.2 ms timeout period
155 // OUT: -
156 // RETURN:
157 // COMMENT: Set timeout length of the reader internal timer.
158 //
159 void M500PcdSetTmo(unsigned char tmoLength);
160
161 // _____________________________________________________________________________
162 //
163 // FUNCTION: M500PcdCmd
164 // IN: cmd PCD_IDLE
165 // PCD_WRITEE2
166 // PCD_READE2
167 // PCD_LOADCONFIG
168 // PCD_LOADKEYE2
169 // PCD_AUTHENT1
170 // PCD_CALCCRC
171 // PCD_AUTHENT2
172 // PCD_RECEIVE
173 // PCD_LOADKEY
174 // PCD_TRANSMIT
175 // PCD_TRANSCEIVE
176 // PCD_RESETPHASE
177 // for a detailed description of the parameter values, please
178 // have a look on the header file of the reader register
C51 COMPILER V7.02a M500AUC 07/24/2003 11:05:36 PAGE 4
179 // definitions.
180 // send byte stream of variable length, which should be send to
181 // the PICC, the length of stream has to be specified
182 // in the info - structure
183 // OUT: rcv byte stream of variable length, which was received
184 // from the PICC or PCD
185 // info communication and status structure
186 // RETURN:
187 // COMMENT: This function provides the central interface to the reader module.
188 // Depending on the "cmd"-value, all necessary interrupts are enabled
189 // and the communication is started. While the processing is done by
190 // the reader module, this function waits for its completion.
191 // It's notable, that the data in the "send byte stream" is written
192 // to the FIFO of the reader module by the ISR. Immediate after
193 // enabling the interrupts, the LoAlert interrupt is activated.
194 // The ISR writes the data to the FIFO. This function is not involved
195 // in writing or fetching data from FIFO, all work is done by the
196 // ISR.After command completion, the error status is evaluated and
197 // returned to the calling function.
198 //
199 char M500PcdCmd(unsigned char cmd,
200 volatile unsigned char* send,
201 volatile unsigned char* rcv,
202 volatile MfCmdInfo *info);
203
204 // _____________________________________________________________________________
205 //
206 // FUNCTION: SetBitMask
207 // IN: reg register address
208 // mask bit mask to set
209 // OUT: -
210 // RETURN:
211 // COMMENT: This function performs a read - modify - write sequence
212 // on the specified register. All bits with a 1 in the mask
213 // are set - all other bits keep their original value.
214 //
215 char SetBitMask(unsigned char reg,unsigned char mask);
216
217 // _____________________________________________________________________________
218 //
219 // FUNCTION: ClearBitMask
220 // IN: reg register address
221 // mask bit mask to clear
222 // OUT: -
223 // RETURN:
224 // COMMENT: This function performs a read - modify - write sequence
225 // on the specified register. All bits with a 1 in the mask
226 // are cleared - all other bits keep their original value.
227 //
228 char ClearBitMask(unsigned char reg,unsigned char mask);
229
230 // _____________________________________________________________________________
231 //
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