SLE4442卡_IC的51單片機(jī)驅(qū)動(dòng)程序
加入技術(shù)交流群
void Byte_WRT(uchar Xdata) //寫字節(jié)
{
uchar count;
DATA_OUT;
DelayUs(2);
for(count=8;count!=0;count--)
{
CLK_LOW;
DelayUs(2);
if((Xdata)&0x01)
{
DATA_HIGH;
}
else
{
DATA_LOW;
}
DelayUs(2);
CLK_HIGH;
DelayUs(2);
Xdata = Xdata >> 1; //循環(huán)右移，從最低位開始寫
}
}本文引用地址：http://www.ex-cimer.com/article/201612/324690.htm
void Command(uchar command,uchar address,uchar IC_data)
{
Start();
Byte_WRT(command); //發(fā)送命令
Byte_WRT(address); //發(fā)送地址
Byte_WRT(IC_data); //發(fā)送數(shù)據(jù)
Stop(); //操作命令結(jié)束
}
void Process(void)
{
uint j; //寫指令后的處理過程
DATA_OUT;
DelayUs(2);
CLK_LOW;
DATA_LOW;
DelayUs(2);
for(j = 0;j < 255;j++)
{
CLK_HIGH;
DelayUs(2);
CLK_LOW;
DelayUs(2);
}
DATA_HIGH;
}
void Process2(void)
{
uint j; //寫指令后的短處理過程
DATA_OUT;
DelayUs(2);
CLK_LOW;
DATA_LOW;
DelayUs(2);
for(j = 0;j < 2;j++)
{
CLK_HIGH;
DelayUs(2);
CLK_LOW;
DelayUs(2);
}
DATA_HIGH;
}
uchar Code_Check(uchar Code1,uchar Code2,uchar Code3) //密碼校驗(yàn)函數(shù)
{
uchar i;
Command(0x31,0x00,0x00);
for(i = 0;i < 4;i++)
{
ErrorCount[i] = Byte_Read();
}
if(ErrorCount[0] == 0)
{
return 0;
}
else
{
if((ErrorCount[0]&0x01) == 1)
{
ErrorCount[0] &= 0x06; //bit0=0;
}
else if((ErrorCount[0]&0x02) == 1)
{
ErrorCount[0] &= 0x05; //bit1=0;
}
else
{
ErrorCount[0] &= 0x03; //bit2=0
}
}
Command(0x39,0x00,ErrorCount[0]);
Process();
Command(0x33,0x01,Code1);
Process2();
Command(0x33,0x02,Code2);
Process2();
Command(0x33,0x03,Code3);
Process2();
Command(0x39,0x00,0xff);
Process();
Command(0x31,0x00,0x00);
for(i = 0;i < 4;i ++)
{
ErrorCount[i] = Byte_Read();
}
if(ErrorCount[0] == 0x07)
{
return 1;
}
else
{
return 0;
}
}
void ReadMainROM(uchar addr,uchar *p,uchar N) //讀主存區(qū)
{
Command(0x30,addr,0xff);
while(N--)
{
*p=Byte_Read();
p++;
}
}
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