FM1702射频卡启动步骤
在做一个基于FM1702的ic射频卡，有点不明白它的原理。程序启动后，在重复寻卡处为什么要读取ErrorFlag然后读取FIFOLength并且当返回值是0x02时才可以下一步，否则一直重复上述步骤。这是读卡芯片与卡内部定义好的还是这个程序有问题啊？哪位做过帮个忙，指点一下，如果问题说得不清楚，我再补充。 我自己顶一下吧。现在芯片可以初始化了，但是紧接着的寻卡，怎么都不行，我也参考了网上好多的例子，我觉得我的可以啊，但是怎么都没用，我把程序源代码贴在这，哪位大侠做过，热心帮帮忙，大家都理解那种想做找不到问题解决方法抓狂的心理，帮帮忙，谢谢了。
#include<reg52.h>
#include<intrins.h>
#include<FM1702.h>
#define ucharunsigned char
#define uint unsigned int
uchar code keya[]={0xff,0xff,0xff,0xff,0xff,0xff};
uchar code keyb[]={0xff,0xff,0xff,0xff,0xff,0xff};//卡的密匙
uchar code changekey={0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f,0x0f};//密匙变换存储区
uchar Fbuff; //发送FIFO缓存
uchar Jbuff; //接收FIFO缓存
uchar UID; //卡型及卡号
uchar change;
sbitcs=P2^0;
sbitsck=P2^1;
sbitmosi=P2^2;
sbitmiso=P2^3;
sbitFM1702rst=P3^4;
sbit led9=P1^0;
sbit led8=P1^1;
sbit led7=P1^2;
sbit led6=P1^3;
sbit led5=P1^4;
/*****************函数声明**************************/
//voidspi_write(uchar m);
uchar spi(uchar m);
voidfifo_clear();
voidresig_write(uchar reg,uchar da);
uchar resig_read(uchar reg);
ucharfifo_read(uchar count,uchar *s);
voidfifo_write(uchar count,uchar *s);
uchar inti_1702();
voidcard_halt();
voidcard_scan();
uchar card_type();
uchar card_anticoll();
voidcard_select();
voidcard_authtication1(uchar m);
uchar card_authtication2();
uchar card_read(uchar m);
uchar card_write(uchar m);
uchar card_incre(uchar m,uchar x);
uchar card_dec(uchar m,uchar x);
ucharloadkey();
voiddelay(uchar m);
ucharHL_card_active(uchar picc_k);
uchar spi(uchar m)
{
uchar i,temp=0;
for(i=0;i<8;i++)
{
sck=0;
if(m&0x80)
mosi=1;
else
mosi=0;
m<<=1;
sck=1;
temp<<=1;
if(miso)
temp|=0x01;
}
sck=0;
mosi=0;
returntemp;
}
void resig_write(uchar reg,uchar da)
{
sck=0;
reg<<=1;
cs=0;
reg=reg&0x7e;
spi(reg);
spi(da);
cs=1;
}
uchar resig_read(uchar reg)
{
uchar temp;
sck=0;
_nop_();
_nop_();
cs=0;
reg<<=1;
reg|=0x80;
spi(reg);
temp=spi(0x00);
cs=1;
return temp;
}
voidfifo_clear()
{
uchar temp;
temp=resig_read(Control);
temp=temp|0x01;
resig_write(Control,temp);
while(resig_read(FIFOLength)) ;
}
uchar fifo_read(uchar count,uchar *s)
{
uchar i,temp;
temp=resig_read(FIFOLength);
if(temp<count)
return0;
else
{
for(i=0;i<count;i++)
{
temp=resig_read(FIFODaTa);
*(s+i)=temp;
}
}
}
void fifo_write(uchar count,uchar *s)
{
uchar i,temp;
fifo_clear();
for(i=0;i<count;i++)
{
temp=*(s+i);
resig_write(FIFODaTa,temp);
}
}
ucharinti_1702()
{
uchar temp;
FM1702rst=1;
delay(0x0a);
FM1702rst=0;
delay(0x0f);
temp=resig_read(Command);
if(temp==0)
resig_write(0x00,0x80);
temp=resig_read(Command);
while(temp);
if(temp==0x00)
return 1;
else
return 0;
}
void delay(uchar m) //单次定时为10ms
{
TMOD=0x01;
while(m--)
{
TH0=0xdc;
TL0=0x00 ;
TR0=1;
while(!TF0);
TF0=0;
TR0=0;
}
}
voidcard_scan()
{
uchartemp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(BitFraming,0x07);
resig_write(ChannelRedundancy,0x03);
temp=resig_read(Control);
temp=temp&0x7f;
resig_write(Control,temp);
Fbuff=0x52;
fifo_write(1,Fbuff);
resig_write(Command,0x1e);
fifo_clear();
}
ucharcard_type()
{
uchar temp1,temp2;
// fifo_read(2,UID);
// temp1=UID;
// temp2=UID;
temp1=resig_read(FIFOLength);
// if((temp1==0x04)||(temp1==0x03)||(temp1==0x05)||(temp1==0x53)&&(temp2==0))
// {
if(temp1==0x02)
return 0x01;
// fifo_read(2,UID);
// }
else
return 0;
}
uchar card_anticoll() //防冲突函数
{
uchar temp,i;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x03);
Fbuff=0x93;
Fbuff=0x20;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
delay(1);
temp=resig_read(FIFOLength);
if(temp==0x05)
{
temp=0;
fifo_read(5,UID);
for(i=0;i<5;i++)
{
temp=temp^UID;
}
if(temp==0)
return 1;
else
return 0;
}
else
return 0;
}
void card_select()
{
uchar i;
resig_write(Control,0x01);
Fbuff=0x93;
Fbuff=0x70;
for(i=0;i<5;i++)
{
Fbuff=UID;
}
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x0f);
fifo_write(7,Fbuff);
resig_write(Command,0x1e);
}
void card_authtication1(uchar m)
{
resig_write(Control,0x01);
Fbuff=0x60;
Fbuff=m;
fifo_write(6,Fbuff);
resig_write(Command,0x0c);
}
uchar card_authtication2()
{
uchar temp;
resig_write(Control,0x01);
resig_write(Command,0x14);
temp=resig_read(Control);
temp=temp&0x08;
if(temp!=0x08)
return 1;
else
return 0;
}
uchar card_read(uchar m)
{
uchar temp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x0f);
resig_write(Control,0x01);
Fbuff=0x30;
Fbuff=m;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
temp=resig_read(FIFOLength);
if(temp==16)
{
return 1;
fifo_read(16,Jbuff);
}
else
return 0;
}
ucharcard_write(uchar m)
{
uchar temp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x0f);
resig_write(Control,0x01);
Fbuff=0xA0;
Fbuff=m;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
temp=resig_read(FIFOLength);
if(temp==1)
{
return 1;
resig_write(Control,0x01);
fifo_write(16,Fbuff);
}
else
return 0;
}
ucharcard_incre(uchar m,uchar x)
{
uchar temp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x07);
resig_write(Control,0x01);
Fbuff=0xC1;
Fbuff=m;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
temp=resig_read(FIFOLength);
if(temp==0x01)
{
resig_write(Control,0x01);
change=x;
fifo_write(4,change);
resig_write(Command,0x1a);
return 1;
}
return 0;
}
ucharcard_dec(uchar m,uchar x)
{
uchar temp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x07);
resig_write(Control,0x01);
Fbuff=0xC0;
Fbuff=m;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
temp=resig_read(FIFOLength);
if(temp==0x01)
{
return 1;
resig_write(Control,0x01);
change=x;
fifo_write(4,change);
resig_write(Command,0x1a);
}
return0;
}
uchar loadkey()
{
uchar temp;
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x0f);
resig_write(Control,0x01);
fifo_write(12,changekey);
resig_write(Command,0x19);
temp=resig_read(ErrorFlag);
temp=temp&0x40;
if(temp==0x40)
return 0;
else
return 0x01;
}
voidcard_halt()
{
resig_write(CRCResultLSB,0x63);
resig_write(CWConductance,0x3f);
resig_write(ChannelRedundancy,0x03);
resig_write(Control,0x01);
Fbuff=0x50;
Fbuff=0x00;
fifo_write(2,Fbuff);
resig_write(Command,0x1e);
}
ucharHL_card_active(uchar picc_k)
{
uchar temp;
card_halt();
temp=card_type();
if(temp)
{
temp=card_anticoll();
if(temp)
{
card_select();
card_authtication1(picc_k);
if(temp)
{
temp=card_authtication2();
if(temp)
{
temp=loadkey();
if(temp)
{
return 1 ;
}
}
}
}
}
return 0;
}
void main()
{
uchar temp;
temp=inti_1702();
if(temp==0x01)
led9=0;
card_scan();
temp=resig_read(PrimaryStatus);
temp=temp&0xf0;
if(temp==0x00)
led8=0;
while(1)
{ card_scan();
temp=card_type();
if(temp==0x01)
{
led8=~led8;
delay(0x0f);
}
// card_anticoll() ;
}
}
目前程序状态寄存器说明读卡器和卡都是空闲状态，不明白，求解，拜托大侠们了。 我也在调试FM1702SL，不知道你的问题解决了吗？ 回复【2楼】sunnydragon
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你的调出来没？上边那个问题解决了，但是又遇到一个问题，三重认证最后一个认证执行后，程序如果重新开始执行只能执行到request
而且这个request还是有时候能有时候不能，后边防冲突什么的再也不行了，我不知道哪出问题了，好纳闷啊，只要注释掉三重认证最后一个认证，程序就可以循环执行。真奇怪。你做到什么程度了？ 我比你速度慢点，现在芯片不能初始化，读Command寄存器一直是0xff，把示波器或者是万用表的表笔，往MISO引脚上一放，它就能读出0x00了，不明白为什么。可否加QQ互相讨论下。QQ：383016632 程序正常了，但是好纳闷啊？怎么只能执行一次啊，第二次就死在防冲突里边了，怎么回事啊？？？高手都去哪了啊？ 1702网上大把的代码，在读IC卡这些芯片里面最简单的估计就是这个了 回复【6楼】stevenli
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大把大把的倒是真的，你看过从网上下下来有用的吗？要是有，那你做的还是少啊 程序启动后，在重复寻卡处为什么要读取ErrorFlag然后读取FIFOLength并且当返回值是0x02时才可以下一步，否则一直重复上述步骤.
当然要这么做．查询方式下就是这样的．读FIFOLength返回值是０x02表示收到了卡片返回的数据，这两个字节代表卡片类型．像M1卡是０４００．ErrorFlag也要判断看是不是有错误产生．你也可以用外部中断方式，需要配置RX中断有效，收到卡片数据后会触发中断．再在中断中去判断．
我没有玩过１７０２,但RC500,RC531,RC632,RC522,PN512之类的都差不多． 回复【8楼】lovelywwei
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恩啊，现在做出来了，但是有一个问题啊，程序可以读，可以写，但是先读，然后写入数据不论用按键选的多少，写入的永远是160，这是怎么回事啊？？？？求助
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