学校暑期课设用的代码，非常简单，网上也比较好找，给大家分享一下
单片机源程序如下:
- #include "lpcreg.h"
- #include "main.h"
- #include "mfrc522.h"
- unsigned char code data1[16] = {0x12,0x34,0x56,0x78,0xED,0xCB,0xA9,0x87,0x12,0x34,0x56,0x78,0x01,0xFE,0x01,0xFE};
- //M1卡的某一块写为如下格式，则该块为钱包，可接收扣款和充值命令
- //4字节金额（低字节在前）＋4字节金额取反＋4字节金额＋1字节块地址＋1字节块地址取反＋1字节块地址＋1字节块地址取反
- unsigned char code data2[4] = {0x12,0,0,0};
- unsigned char code DefaultKey[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
- unsigned char g_ucTempbuf[20];
- void main( )
- {
- unsigned char status;
- InitializeSystem( );
- LED_GREEN = 0;
- // while(1){}
- PcdReset();
- PcdAntennaOff();
- PcdAntennaOn();
- M500PcdConfigISOType( 'A' );
- while ( 1 )
- {
- // PcdAntennaOff();
- // status = 23 ;
- status = PcdRequest(PICC_REQALL, g_ucTempbuf);
- if (status != MI_OK)
- {
- LED_GREEN = 1; //!LED_GREEN;
- continue;
- }
- LED_GREEN = 0;
-
- status = PcdAnticoll(g_ucTempbuf);
- if (status != MI_OK)
- { continue; }
-
- status = PcdSelect(g_ucTempbuf);
- if (status != MI_OK)
- { continue; }
-
- status = PcdAuthState(PICC_AUTHENT1A, 1, DefaultKey, g_ucTempbuf);
- if (status != MI_OK)
- { continue; }
-
- status = PcdWrite(1, data1);
- if (status != MI_OK)
- { continue; }
-
- status = PcdValue(PICC_DECREMENT,1,data2);
- if (status != MI_OK)
- { continue; }
-
- status = PcdBakValue(1, 2);
- if (status != MI_OK)
- { continue; }
-
- status = PcdRead(2, g_ucTempbuf);
- if (status != MI_OK)
- { continue; }
-
- PcdHalt();
- // PcdAntennaOff();
- }
- }
- /////////////////////////////////////////////////////////////////////
- //系统初始化
- /////////////////////////////////////////////////////////////////////
- void InitializeSystem()
- {
- P0M1 = 0x0; P0M2 = 0x0;
- P1M1 = 0x0; P1M2 = 0x0;
- P3M1 = 0x0; P3M2 = 0xFF;
- P0 = 0xFF; P1 = 0xFF; P3 = 0xFF;
- }
- /////////////////////////////////////////////////////////////////////
- //用T2做延时子程序
- /////////////////////////////////////////////////////////////////////
- void DelayMs(unsigned int _MS)
- {
- TH1 = (unsigned char)(RCAP2_1ms>>8);
- TL1 = (unsigned char)(RCAP2_1ms);
- ET1 = 0; // Disable timer2 interrupt
- TR1 = 1;
- while (_MS--)
- ……………………
- …………限于本文篇幅 余下代码请从51黑下载附件…………
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