📄 s6700.c
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#include "S6700.h"
#include "initial.h"
#include "timer.h"
#include "dealchars.h"
//#define PUSH 0x80
//#define DOUT 0x40
//#define DIN 0x20
//#define SCLOCK 0x10
//#define GLED 0x08
//#define RLED 0x04
//unsigned PUSH = PORTDbits.RD7;
//unsigned DOUT = PORTDbits.RD6;
//unsigned DIN = PORTDbits.RD5 ;
//unsigned GLED = PORTDbits.RD3;
//unsigned RLED = PORTDbits.RD2;
//unsigned SCLOCK = PORTDbits.RD4;
extern uchar timer_flag;
extern uchar cTemp;
//别处定义的带发送数据
extern uchar Data_buf[32];
uchar k;
///////////////////////////////////////////////////////////////////////////////
//Start signal , sent by CPU to S6700
//Start is a low-to-high transition on the PORTDbits.RD5 line while PORTDbits.RD4 is held high.
///////////////////////////////////////////////////////////////////////////////
void startS6700(void)
{
PORTD &= ~SCLOCK; //SCLOCK = 0
PORTD &= ~DIN; //DIN = 0;
PORTD |= SCLOCK; //SCLOCK = 1;
PORTD |= DIN; //DIN = 1;
}
///////////////////////////////////////////////////////////////////////////////
//Stop signal , sent by CPU to S6700
//Stop is a high-to-low transition on the PORTDbits.RD5 line while PORTDbits.RD4 is held high.
///////////////////////////////////////////////////////////////////////////////
void stopS6700(void)
{
PORTD &= ~SCLOCK;
PORTD |= DIN;
PORTD |= SCLOCK;
PORTD &= ~DIN;
PORTD &= ~SCLOCK;
}
//////////////////////////////////////////////////////////////////////////////
void tran1()
{
PORTD |= DIN;
PORTD &= ~DIN;
PORTD |= DIN; //TRAN1
}
//////////////////////////////////////////////////////////////////////////////
void tran2()
{
PORTD &= ~DIN;
//PULSE_DELAY = 0;
PORTD |= DIN;
//PULSE_DELAY = 0;
PORTD &= ~DIN; //TRAN2
PORTD &= ~SCLOCK;
}
///////////////////////////////////////////////////////////////////////////////
//Send data to S6700, include start, command, data, stop
///////////////////////////////////////////////////////////////////////////////
void SendDataS6700(uchar WholeByte_Length, uchar LastBit_Length)
{
uchar i=0, j;
startS6700();
while (i<WholeByte_Length)
{
cTemp = Data_buf[i];
//发送一个字节
for (j=0; j<8; j++)
{
PORTD &= ~SCLOCK; //拉低SCLOCK
while (PORTD & DOUT) ; //等待S6700FIFO为空，才能发送数据
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;
cTemp <<= 1;
PORTD |= SCLOCK; //PORTD |= SCLOCK;
}
i++;
}
//结束位发送
if (LastBit_Length)
{
cTemp = Data_buf[i];
for (j=0; j<LastBit_Length; j++)
{
PORTD &= ~SCLOCK; //拉低SCLOCK
while (PORTD & DOUT); //等待S6700FIFO为空，才能发送数据
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;
cTemp <<= 1;
PORTD |= SCLOCK; //PORTD |= SCLOCK;
}
}
stopS6700(); //ES1
}
///////////////////////////////////////////////////////////////////////////////
//Receive data returned by smart label via S6700
//the return value is the length of bits
///////////////////////////////////////////////////////////////////////////////
uchar RecDataS6700(void)
{
uchar j=0,start_flag=0;
timer_flag = 1;
cTemp = 0;
//启动定时器,此处需要重新改///////////////////////////////////////////////
T0CON = 0x82; //设定TMR0L工作于8位定时器方式
//内部时钟，TMR0分频
INTCON = 0x20; //总中断禁止，TMR0中断允许，清除TMR0的中断标志
INTCONbits.GIE = 1; //开总中断
//////////////////////////////////////////////////////////////////////////
PORTD &= ~SCLOCK; //
PORTD |= DIN;
Nop(); //0917 add
PORTD &= ~DIN;
//PORTD &= ~SCLOCK;
InputIO('D',SCLOCK); //改变为输入
Nop(); //0917 add
//TRAN1
PORTD |= DIN;
k=0;
//InputIO('D',SCLOCK); //改变SCLOCK为输入
while ((!start_flag) && (timer_flag) ) //等待S2
{
while (PORTDbits.RD4 == 1) //SCLOCK high
{
if (PORTDbits.RD6 == 1) //DOUT high
{
start_flag = 1;
//PORTDbits.RD1 ^= 1;
} //start send data from s6700
}
}
//Nop();
while (start_flag && timer_flag)
{
while (!(PORTD & SCLOCK)); //等待SCLOCK变高
if (PORTD & DOUT) //读此时的DOUT
cTemp|=0x01;
else
cTemp&=~0x01;
if ((cTemp&0x01)!=0x01) //如果DOUT为低
while (PORTD & SCLOCK); //等待SCLOCK变低,就是发送了0
else
{
while ((PORTD & DOUT) &&(PORTD & SCLOCK));//此时DOUT为高,如果在SCLOCK为高时
if (PORTD & SCLOCK) //DOUT变低,为ES2,需要复位start_flag;
//否则SCLOCK先变低就是发送了1
start_flag = 0;
}
if (start_flag) //将读到的数据放到缓冲区
{
if (j<7)
{
cTemp <<= 1;
j++;
}
else
{
Data_buf[k+1] = cTemp; //move the received char into buffer
j = 0;
k++;
}
}
}//end of while (start_flag && timer_flag)
INTCONbits.TMR0IE = 0; //关闭定时器
PORTD &= ~DIN;
Nop();
PORTD |= DIN;
Nop();
//PORTD |= SCLOCK; // output//怎么改?
OutputIO('D',SCLOCK);
PORTD &= ~DIN ; //TRAN2
if (k==0 && j==0)
return 0;
else
return k;
}
///////////////////////////////////////////////////////////////////////////////
//Read data from register of 6700
///////////////////////////////////////////////////////////////////////////////
uchar ReadTIC(void)
{
uchar i=0;
startS6700(); //S1
cTemp = 0x71; //Read from Configuration Register
while (i<8)
{
PORTD &= ~SCLOCK; //拉低时钟,等待FIFO寄存器为空
while (PORTD & DOUT);
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;
cTemp <<= 1;
PORTD |= SCLOCK;
i++;
}
PORTD &= ~SCLOCK;
PORTD &= ~DIN; //DIN= 0;
i = 0;
cTemp = 0;
while (i<8)
{
PORTD |= SCLOCK; //PORTD |= SCLOCK;
cTemp <<= 1;
if (PORTD & DOUT)
cTemp|=0x01;
else
cTemp &=~0x01; //cTemp0=PORTDbits.RD6
PORTD &= ~SCLOCK; //PORTD &= ~SCLOCK;
i++;
}// end of while
stopS6700(); //ES1
return cTemp;
}
///////////////////////////////////////////////////////////////////////////////
//Initiate the timer register of S6700
///////////////////////////////////////////////////////////////////////////////
void InitTIC(void)
{
Data_buf[0] = 0x7B; //Initiate the communication between CPU and S6700,InitTIC_command = 7Bh
Data_buf[1] = 0x80; //MSB 8 bits 1000 0000
Data_buf[2] = 0xC0; //LSB 5 bits 1100 0
SendDataS6700(2, 5);
}
///////////////////////////////////////////////////////////////////////////
//PowerDown
///////////////////////////////////////////////////////////////////////////
void SleepTIC(void)
{
uchar i;
//InitTIC();
startS6700();
cTemp = 0x72; //powerdomn commmand 0111 0010
for(i=0;i<8;i++)
{
PORTD &= ~SCLOCK; //PORTD &= ~SCLOCK;
while (PORTD & DOUT);
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;
cTemp <<= 1;
PORTD |= SCLOCK;
}
cTemp = 0x00; //powerdomn commmand 0000 0000
for(i=0;i<8;i++)
{
PORTD &= ~SCLOCK; //PORTD &= ~SCLOCK;
while (PORTD & DOUT);
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;;
cTemp <<= 1;
PORTD |= SCLOCK;
}
stopS6700();
startS6700();
cTemp = 0x7E; //powerdomn commmand 0111 1110
for( i=0;i<8;i++)
{
PORTD &= ~SCLOCK; //PORTD &= ~SCLOCK;
while (PORTD & DOUT);
if (cTemp & 0x80)
PORTD |= DIN;
else
PORTD &= ~DIN; //DIN = cTemp7;
cTemp <<= 1;
PORTD |= SCLOCK;
}
stopS6700();
}
///////////////////////////////////////////////////////////////////////////////
//Wake up
//////////////////////////////////////////////////////////////////////////////
void WakeupTIC(void)
{
startS6700();
delay(400);
Data_buf[0]=0x7d;
Data_buf[1]=0x22;
SendDataS6700(2,0);
}
///////////////////////////////////////////////////////////////////////////////
//Communication between CPU and smart label via S6700
///////////////////////////////////////////////////////////////////////////////
uchar SendINC(uchar inc_length)
{
uint Crc, wCrc;
uchar i,rbyte=0;
SendDataS6700(inc_length, 0); //Send data to S6700
rbyte = RecDataS6700(); //receive data from S6700
if (rbyte == 0)
return 0;
for (i=1; i<=rbyte; i++)
Data_buf[i] = reverse_byte(Data_buf[i]);
Crc = (uint)Data_buf[rbyte];
Crc <<= 8;
Crc |= (uint)Data_buf[rbyte-1]; //CRC read from smartlabel
wCrc = CRC16CheckSum(Data_buf+1, rbyte-2); //CRC computed
if (Crc == wCrc)
return rbyte;
else
return 0;
}
//////////////////////////////////////////////////////////////////////////////////
//read Uid of smartlabel
/////////////////////////////////////////////////////////////////////////////////
uchar Read_UID(void)
{
uint wCrc;
uchar i;
InitRFID();
Data_buf[30]=ReadTIC();
if (Data_buf[30]!=34)
return 0;
InitTIC();
Data_buf[0] = 0x2d; // 03command length 2d 00 2b read UID
Data_buf[1] = 0x00;
Data_buf[2] = 0x2b;
wCrc = CRC16CheckSum(Data_buf+1, 2);
Data_buf[3] = (uchar)(wCrc & 0x00ff); //LSB of CRC
Data_buf[4] = (uchar)((wCrc & 0xff00) >> 8); //HSB of CRC
for (i=1; i<=4; i++)
Data_buf[i] = reverse_byte(Data_buf[i]);
i = SendINC(5);
return i; //length of read saved in Data_buf[0]; Databuf[3..10] is the UID;
}
//////////////////////////////////////////////////////////////////////////////////
//read a block of smartlabel
/////////////////////////////////////////////////////////////////////////////////
uchar Read_block(uchar block_num)
{
uint wCrc;
uchar i;
InitRFID();
Data_buf[30]=ReadTIC();
InitTIC();
Data_buf[0] = 0x2d; // 03command length 2d 40 20 read block
Data_buf[1] = 0x40; // optional_flag is seted for block securety status
Data_buf[2] = 0x20;
Data_buf[3] = block_num; // block number is block_num
wCrc = CRC16CheckSum(Data_buf+1, 3);
Data_buf[4] = (uchar)(wCrc & 0x00ff); //LSB of CRC
Data_buf[5] = (uchar)((wCrc & 0xff00) >> 8); //HSB of CRC
for (i=1; i<=5; i++)
Data_buf[i] = reverse_byte(Data_buf[i]);
//IE2 &=~ URXIE0;
//changeDCO();
i = SendINC(6);
//ResetDoc();
//SleepTIC();
//InitSeriel();
//IE2 |= URXIE0;
return i; //length of read saved in Data_buf[0]; Databuf[3..6] is the block_data;
}
//////////////////////////////////////////////////////////////////////////////////
//write block2 of smartlabel, the data must be store in Data_buf[20]...Data_buf[23]
/////////////////////////////////////////////////////////////////////////////////
uchar Write_block(uchar block_num)
{
uint wCrc;
uchar i;
InitRFID();
Data_buf[30]=ReadTIC();
if (Data_buf[30]!=34)
return 0;
InitTIC();
Data_buf[0] = 0x2d; // 03command length 2d 40 21 write block
Data_buf[1] = 0x40;
Data_buf[2] = 0x21;
Data_buf[3] = block_num; // block number is 00
Data_buf[4] = Data_buf[20]; // data to write
Data_buf[5] = Data_buf[21];
Data_buf[6] = Data_buf[22];
Data_buf[7] = Data_buf[23];
wCrc = CRC16CheckSum(Data_buf+1, 7);
Data_buf[8] = (uchar)(wCrc & 0x00ff); //LSB of CRC
Data_buf[9] = (uchar)((wCrc & 0xff00) >> 8);
for (i=1; i<=9; i++)
Data_buf[i] = reverse_byte(Data_buf[i]);
//IE2 &=~ URXIE0;
//changeDCO();
i = SendINC(10);
//ResetDoc();
//SleepTIC();
//InitSeriel();
//IE2 |= URXIE0;
return i;
}
///////////////////////////////////////////////////////////////
///////写S6700Configuration寄存器
///////////////////////////////////////////////////////////////
void WriteConfigReg()
{
Data_buf[0] = 0x7D; //Write Configuration Register
Data_buf[1] = 0x34; //MSB 8 bits 1000 0000
SendDataS6700(2,0);
}
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