一段IC卡写卡操作的源码（深圳达实公司用）

int __stdcall SetCardBalance_NN(HANDLE icdev, long Money, LPCSTR UserPassword,UCHAR sector,unsigned long CardSN,unsigned long SetData)

{ //Money的值表示为多少分钱 , 注意: 充钱可以充入负钱

unsigned long snr;

UINT BasicInfoSec;//基础信息扇区

UCHAR BlockData[16];

UCHAR UserCard_KeyB[6];

union

{

UINT time;//消费流水号

UCHAR ch[4];

}ConsumeSN;

union

{

unsigned long Money;

UCHAR ch[4];

}amount;//存放金额

union

{

unsigned long data;

UCHAR ch[4];

}Wtdata;//写卡时间

…//验证用户密码

BasicInfoSec=SI.sec_assigned.basicinfosec;//基础信息扇区

…判断所给定的扇区信息的正确性

….

…装载消费扇区密码

…装载基础扇区密码

SETTIMEOUT(WaitTime);//寻卡

do

{

if(rf_card(icdev,ALL,&snr) == MI_OK) break;

if(rf_halt(icdev)!=MI_OK) return Reader_Err;

}while(!TIMEOUT);

if (TIMEOUT) return (No_Card);

if(CardSN != snr) return NOT_SPECCARD_ERR;

SetData=SetData&0x0000FFFF;

if( SetData==0x0000){ //手工充值

…

if (rf_write(icdev,sector*4+1,BlockData) != MI_OK) return(Writeblock1_Err);

return 0 ;

}

else {

// 自动充值开始

..只需验证KEY即可

…

Wtdata.data=Wtdata.data&0x0000FFFF;

if(Wtdata.data==0xFFFF)Wtdata.data=0x0000;

if(SetData<=Wtdata.data) return -30; //自动充值已经完成

//新一轮的充值数据

Wtdata.data = SetData;

…准备写新的充值时间

if (rf_write(icdev,BasicInfoSec*4+2,BlockData) != MI_OK) return(WriteCard_Err);

SETTIMEOUT(WaitTime);//寻卡

do

{

if(rf_card(icdev,ALL,&snr) == MI_OK) break;

if(rf_halt(icdev)!=MI_OK) return Reader_Err;

}while(!TIMEOUT);

if (TIMEOUT) return (No_Card);

if(CardSN != snr) return NOT_SPECCARD_ERR;

…需验证KEY可

…写充值数据

return 0 ;

}