rfid2-micro2440,keil4裸机
硬件上,由于rfid的spi在stc11f32x上本来是模拟出来的,所以在micro2440上也先用模拟的吧(s3c2440a有spi接口先不用了)
在micro2440原理图上引出如下接口
现在定义
EINT0 MF_SDA(NSS片选)------(GPF0 OUT)
EINT1 MF_SCK(时钟)-------------(GPF1 OUT)
EINT2 MF_MOSI--------------------(GPF2 OUT)
EINT3 MF_MISO--------------------(GPF3 IN)
EINT4 MF_RST----------------------(GPF4 OUT)
连线如下
软件上
由于c51的c语言有自己的风格扩展,所以不能直接拷贝上篇单片机的代码到s3c2440a的工程中,需把c51里的关键字删掉,比如data xdata等等,还有一些比如c51里的位指令,也要转换成arm的东东才可.
发现keil4下arm的编译器会将比如char status 默认编译成unsigned char status,而keil c51的编译器会将其默认编译成signed char status,这样数据类型就混乱了。所以为了保险,我在有符号的变量前都加了signed,无符号变量前加了unsigned
#include "rc522.h" unsigned char LastKeyA[6]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};//NO.2卡,初始密码
unsigned char NewKeyA[6]={0x19,0x84,0x07,0x15,0x76,0x14};//NO.2卡,新密码
unsigned char NewKey[16]={0x19,0x84,0x07,0x15,0x76,0x14,//注册用0xff,0x07,0x80,0x69,0x19,0x84,0x07,0x15,0x76,0x14};unsigned char Read_Data[16]={0x00};
unsigned char Write_First_Data[16];
unsigned char Write_Consume_Data[16];
unsigned char RevBuffer[30];
unsigned char MLastSelectedSnr[4];
unsigned char oprationcard;extern signed char PcdReset(void);
extern signed char PcdRequest(unsigned char req_code,unsigned char *pTagType);
extern void PcdAntennaOn(void);
extern void PcdAntennaOff(void);
extern signed char M500PcdConfigISOType(unsigned char type);
extern signed char PcdAnticoll(unsigned char *pSnr);
extern signed char PcdSelect(unsigned char *pSnr);
extern signed char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr);
extern signed char PcdWrite(unsigned char addr,unsigned char *pData);
extern signed char PcdRead(unsigned char addr,unsigned char *pData);
extern signed char PcdHalt(void);void InitRc522(void)//初始化rfid模块
{PcdReset();PcdAntennaOff(); PcdAntennaOn();M500PcdConfigISOType( 'A' );
}void ctrlprocess(void)//读写函数
{signed char status; int ii;Uart_Printf("\n");
/**********************************************寻卡**************************************************************/status=PcdRequest(PICC_REQIDL,&RevBuffer[0]);//寻天线区内未进入休眠状态的卡,返回卡片类型 2字节if(status!=MI_OK){ Uart_Printf("XXXXXXXXXXXXXXXX没卡类型\n");return;}Uart_Printf("***********有卡类型\n");/**********************************************返回序列号**************************************************************/status=PcdAnticoll(&RevBuffer[2]);//防冲撞,返回卡的序列号 4字节if(status!=MI_OK){Uart_Printf("XXXXXXXXXXXXXXXX没卡序列号\n");return;} Uart_Printf("***********有卡序列号\n");memcpy(MLastSelectedSnr,&RevBuffer[2],4);for(ii=0;ii<4;ii++){Uart_Printf("%x",(MLastSelectedSnr[ii]>>4)&0x0f);Uart_Printf("%x",MLastSelectedSnr[ii]&0x0f);}/**********************************************选卡**************************************************************/memcpy(MLastSelectedSnr,&RevBuffer[2],4);status=PcdSelect(MLastSelectedSnr);//选卡if(status!=MI_OK){Uart_Printf("XXXXXXXXXXXXXXXX未选中卡\n");return;}Uart_Printf("***********选中卡\n");/**********************************************验证密码,扇区1,扇区1的控制块,地址为7********************************/status=PcdAuthState(PICC_AUTHENT1A,7,NewKeyA,MLastSelectedSnr);//????KUAI4?// 验证密码if(status!=MI_OK){ Uart_Printf("XXXXXXXXXXXXXXXX密码错误\n");return;}Uart_Printf("***********密码正确\n");/**********************************************读卡,扇区1,扇区1的第一个数据块,地址为4*******************************/status=PcdRead(4,Read_Data); //读卡 *********************************************************if(status!=MI_OK){Uart_Printf("XXXXXXXXXXXXXXXX第一次读卡失败\n");// bWarn=1;return;}Uart_Printf("***********第一次读卡成功,读到以下数据\n");for(ii=0;ii<4;ii++){fltchr.chr[ii]=Read_Data[ii];Uart_Printf("fltchr.chr[%d]=%x\n",ii,fltchr.chr[ii]);}Uart_Printf("fltchr.flt=%f\n",fltchr.flt);/**********************************************写卡,扇区1,扇区1的控第一个数据块,地址为4********************************/fltchr.flt+=0.1;Uart_Printf("写卡,写入以下数据\n");Uart_Printf("fltchr.flt=%f\n",fltchr.flt);for(ii=0;ii<4;ii++) {Write_First_Data[ii]=fltchr.chr[ii];Uart_Printf("fltchr.chr[%d]=%x\n",ii,fltchr.chr[ii]);}for(ii=0;ii<4;ii++) Uart_Printf("Write_First_Data[%d]=%x\n",ii,Write_First_Data[ii]); status=PcdWrite(4,&Write_First_Data[0]); //写卡*********************************if(status!=MI_OK){Uart_Printf("XXXXXXXXXXXXXXXX写卡失败\n") ; Uart_Printf("status=%d\n",status); return;} Uart_Printf("***********写卡成功\n") ; /**********************************************再次读卡,扇区1,扇区1的第一个数据块,地址为4********************************/ status=PcdRead(4,Read_Data); //读卡 *********************************************************if(status!=MI_OK){Uart_Printf("XXXXXXXXXXXXXXXX第二次读卡失败\n");return;}Uart_Printf("***********第二次读卡成功,读到以下数据\n");for(ii=0;ii<4;ii++){fltchr.chr[ii]=Read_Data[ii];Uart_Printf("fltchr.chr[%d]=%x\n",ii,fltchr.chr[ii]);}Uart_Printf("fltchr.flt=%f\n",fltchr.flt);}int main(void)
{ InitRc522();//初始化必不可少while(1) ctrlprocess();//循环读卡return 0;
}
下面是rc522.c的源码
//#include "include.h"
#include "rc522.h"void ClearBitMask(unsigned char reg,unsigned char mask);
void WriteRawRC(unsigned char Address, unsigned char value);
void SetBitMask(unsigned char reg,unsigned char mask);
signed char PcdComMF522(unsigned char Command, unsigned char *pInData, unsigned char InLenByte,unsigned char *pOutData, unsigned int *pOutLenBit);
void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData);
unsigned char ReadRawRC(unsigned char Address);
void PcdAntennaOn(void);void delay_ns(unsigned int ns)
{unsigned int i;for(i=0;i<ns;i++){// nop();// nop();// nop();}
} void spi_delay(int x)
{while(x--){;}
}
void nop( )
{ int x=2;while(x--){;}
}
//------------------------------------------
/*
在下降沿,主机从机同时去向对自己而言是输出的脚写数据:
即主机向mosi脚写数据
即从机向miso脚写数据在上升沿,主机从机同时都会从对自己而言是输入的脚去读数据:
即主机从mosi脚读数据
即从机从miso脚读数据*/
unsigned char SPIReadByte(void)
{unsigned char SPICount; // Counter used to clock out the dataunsigned char SPIData; SPIData = 0;for (SPICount = 0; SPICount < 8; SPICount++) // Prepare to clock in the data to be read{SPIData <<=1; // Rotate the dataCLR_SPI_CK; nop();nop(); //输出下降沿,从机会在收到下降沿信号后向miso上写数据。nop();nop()是为了给从机留一点写数据的时间。//理论上输出下降沿后,此时主机也可以向mosi上写数据。但是这个系统没用到这个功能,所以就不去写了,所以是半双工。if(STU_SPI_MISO) //从mosi上读数据{SPIData|=0x01;}SET_SPI_CK; nop();nop(); //输出上升沿 ,表明主机要去miso读数据。 //理论上输出上升沿后,从机也可以去mosi读数据,但是在上一步主机没写,所以就读不到了。所以是半双工。//先SET_SPI_CK或者先去读数据均可,因为对主机而言SET_SPI_CK没什么意义,只是为了下一次可以拉低而拉高的。对从机而言SET_SPI_CK有意义但是//从机此时读的数据是没意义的或者读不到数据。} Uart_Printf("RRRRR+++++++++++++++ in spi read,RXdata=%d\n",SPIData); // and loop backreturn (SPIData); // Finally return the read data}
//------------------------------------------
//
//------------------------------------------
void SPIWriteByte(unsigned char SPIData)
{unsigned char SPICount; // Counter used to clock out the datafor (SPICount = 0; SPICount < 8; SPICount++){CLR_SPI_CK;nop();nop(); //输出下降沿,然后主机再输出数据到mosi。//理论上输出下降沿后,此时从机也可以输出数据到mosi。此时主机不用管mosi的输出。所以是半双工。if (SPIData & 0x80){SET_SPI_MOSI; //spi_mosi 写出一位 }else{CLR_SPI_MOSI;} nop();nop(); //spi_ck 时序操作 SET_SPI_CK;nop();nop(); //输出数据后,就输出上升沿。从机会在收到上升沿信号时去mosi读数据。而此时数据已经被arm写在了mosi.//理论上输出上升沿后,主机也可以去miso读数据,但从机可能没向miso输出数据。不用管。所以是半双工。SPIData <<= 1;} Uart_Printf("WWWWW in spi write,data=%d\n",SPIData);
} /*
所以不管是读还是写,主机端的时序操作都可以总结为1.时钟拉低
2.延时一会
3.向mosi写数据or从miso读数据
4.时钟拉高
5.8次以内跳到1 */
/
//功 能:寻卡
//参数说明: req_code[IN]:寻卡方式
// 0x52 = 寻感应区内所有符合14443A标准的卡
// 0x26 = 寻未进入休眠状态的卡
// pTagType[OUT]:卡片类型代码
// 0x4400 = Mifare_UltraLight
// 0x0400 = Mifare_One(S50)
// 0x0200 = Mifare_One(S70)
// 0x0800 = Mifare_Pro(X)
// 0x4403 = Mifare_DESFire
//返 回: 成功返回MI_OK
/
signed char PcdRequest(unsigned char req_code,unsigned char *pTagType)
{signed char status; unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ClearBitMask(Status2Reg,0x08);WriteRawRC(BitFramingReg,0x07);SetBitMask(TxControlReg,0x03);ucComMF522Buf[0] = req_code;status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,1,ucComMF522Buf,&unLen);if ((status == MI_OK) && (unLen == 0x10)){ *pTagType = ucComMF522Buf[0];*(pTagType+1) = ucComMF522Buf[1];}else{ status = MI_ERR; }return status;
}/
//功 能:防冲撞
//参数说明: pSnr[OUT]:卡片序列号,4字节
//返 回: 成功返回MI_OK
/
signed char PcdAnticoll(unsigned char *pSnr)
{signed char status;unsigned char i,snr_check=0;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ClearBitMask(Status2Reg,0x08);WriteRawRC(BitFramingReg,0x00);ClearBitMask(CollReg,0x80);ucComMF522Buf[0] = PICC_ANTICOLL1;ucComMF522Buf[1] = 0x20;status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,2,ucComMF522Buf,&unLen);if (status == MI_OK){for (i=0; i<4; i++){ *(pSnr+i) = ucComMF522Buf[i];snr_check ^= ucComMF522Buf[i];}if (snr_check != ucComMF522Buf[i]){ status = MI_ERR; }}SetBitMask(CollReg,0x80);return status;
}/
//功 能:选定卡片
//参数说明: pSnr[IN]:卡片序列号,4字节
//返 回: 成功返回MI_OK
/
signed char PcdSelect(unsigned char *pSnr)
{signed char status;unsigned char i;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_ANTICOLL1;ucComMF522Buf[1] = 0x70;ucComMF522Buf[6] = 0;for (i=0; i<4; i++){ucComMF522Buf[i+2] = *(pSnr+i);ucComMF522Buf[6] ^= *(pSnr+i);}CalulateCRC(ucComMF522Buf,7,&ucComMF522Buf[7]);ClearBitMask(Status2Reg,0x08);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,9,ucComMF522Buf,&unLen);if ((status == MI_OK) && (unLen == 0x18)){ status = MI_OK; }else{ status = MI_ERR; }return status;
}/
//功 能:验证卡片密码
//参数说明: auth_mode[IN]: 密码验证模式
// 0x60 = 验证A密钥
// 0x61 = 验证B密钥
// addr[IN]:块地址
// pKey[IN]:密码
// pSnr[IN]:卡片序列号,4字节
//返 回: 成功返回MI_OK
/
signed char PcdAuthState(unsigned char auth_mode,unsigned char addr,unsigned char *pKey,unsigned char *pSnr)
{signed char status;unsigned int unLen;unsigned char i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = auth_mode;ucComMF522Buf[1] = addr;for (i=0; i<6; i++){ ucComMF522Buf[i+2] = *(pKey+i); }for (i=0; i<6; i++){ ucComMF522Buf[i+8] = *(pSnr+i); }// memcpy(&ucComMF522Buf[2], pKey, 6); // memcpy(&ucComMF522Buf[8], pSnr, 4); status = PcdComMF522(PCD_AUTHENT,ucComMF522Buf,12,ucComMF522Buf,&unLen);if ((status != MI_OK) || (!(ReadRawRC(Status2Reg) & 0x08))){ status = MI_ERR; }return status;
}/
//功 能:读取M1卡一块数据
//参数说明: addr[IN]:块地址
// pData[OUT]:读出的数据,16字节
//返 回: 成功返回MI_OK
/
signed char PcdRead(unsigned char addr,unsigned char *pData)
{signed char status;unsigned int unLen;unsigned char i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_READ;ucComMF522Buf[1] = addr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status == MI_OK) && (unLen == 0x90))// { memcpy(pData, ucComMF522Buf, 16); }{for (i=0; i<16; i++){ *(pData+i) = ucComMF522Buf[i]; }}else{ status = MI_ERR; }return status;
}/
//功 能:写数据到M1卡一块
//参数说明: addr[IN]:块地址
// pData[IN]:写入的数据,16字节
//返 回: 成功返回MI_OK
/
signed char PcdWrite(unsigned char addr,unsigned char *pData)
{signed char status;unsigned int unLen;unsigned char i,ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_WRITE;ucComMF522Buf[1] = addr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }if (status == MI_OK){//memcpy(ucComMF522Buf, pData, 16);for (i=0; i<16; i++){ ucComMF522Buf[i] = *(pData+i); }CalulateCRC(ucComMF522Buf,16,&ucComMF522Buf[16]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,18,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }}return status;
}/
//功 能:命令卡片进入休眠状态
//返 回: 成功返回MI_OK
/
signed char PcdHalt(void)
{signed char status;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_HALT;ucComMF522Buf[1] = 0;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);return MI_OK;
}/
//用MF522计算CRC16函数
/
void CalulateCRC(unsigned char *pIndata,unsigned char len,unsigned char *pOutData)
{unsigned char i,n;ClearBitMask(DivIrqReg,0x04);WriteRawRC(CommandReg,PCD_IDLE);SetBitMask(FIFOLevelReg,0x80);for (i=0; i<len; i++){ WriteRawRC(FIFODataReg, *(pIndata+i)); }WriteRawRC(CommandReg, PCD_CALCCRC);i = 0xFF;do {n = ReadRawRC(DivIrqReg);i--;}while ((i!=0) && !(n&0x04));pOutData[0] = ReadRawRC(CRCResultRegL);pOutData[1] = ReadRawRC(CRCResultRegM);
}/
//功 能:复位RC522
//返 回: 成功返回MI_OK
/
signed char PcdReset(void)
{//PORTD|=(1<<RC522RST);SET_RC522RST;delay_ns(10); /******************************************************************delay_ns********************************///PORTD&=~(1<<RC522RST);CLR_RC522RST;delay_ns(10);//PORTD|=(1<<RC522RST);SET_RC522RST;delay_ns(10);WriteRawRC(CommandReg,PCD_RESETPHASE);delay_ns(10);WriteRawRC(ModeReg,0x3D); //和Mifare卡通讯,CRC初始值0x6363WriteRawRC(TReloadRegL,30); WriteRawRC(TReloadRegH,0);WriteRawRC(TModeReg,0x8D);WriteRawRC(TPrescalerReg,0x3E);WriteRawRC(TxAutoReg,0x40);//必须要return MI_OK;
}
//
//设置RC632的工作方式
//
signed char M500PcdConfigISOType(unsigned char type)
{if (type == 'A') //ISO14443_A{ ClearBitMask(Status2Reg,0x08);WriteRawRC(ModeReg,0x3D);//3FWriteRawRC(RxSelReg,0x86);//84WriteRawRC(RFCfgReg,0x7F); //4FWriteRawRC(TReloadRegL,30);//tmoLength);// TReloadVal = 'h6a =tmoLength(dec) WriteRawRC(TReloadRegH,0);WriteRawRC(TModeReg,0x8D);WriteRawRC(TPrescalerReg,0x3E);delay_ns(1000);PcdAntennaOn();}else{ return -1; }return MI_OK;
}//读写寄存器/
//功 能:读RC632寄存器
//参数说明:Address[IN]:寄存器地址
//返 回:读出的值
/
unsigned char ReadRawRC(unsigned char Address)
{unsigned char ucAddr;unsigned char ucResult=0;CLR_SPI_CS;ucAddr = ((Address<<1)&0x7E)|0x80;SPIWriteByte(ucAddr);ucResult=SPIReadByte();SET_SPI_CS;return ucResult;
}/
//功 能:写RC632寄存器
//参数说明:Address[IN]:寄存器地址
// value[IN]:写入的值
/
void WriteRawRC(unsigned char Address, unsigned char value)
{ unsigned char ucAddr;CLR_SPI_CS;ucAddr = ((Address<<1)&0x7E);SPIWriteByte(ucAddr);SPIWriteByte(value);SET_SPI_CS;
}//直接调用读写寄存器的函数进行操作寄存器,这些函数又被其他函数调用实现各种功能/
//功 能:置RC522寄存器位
//参数说明:reg[IN]:寄存器地址
// mask[IN]:置位值
/
void SetBitMask(unsigned char reg,unsigned char mask)
{signed char tmp = 0x0;tmp = ReadRawRC(reg);WriteRawRC(reg,tmp | mask); // set bit mask
}/
//功 能:清RC522寄存器位
//参数说明:reg[IN]:寄存器地址
// mask[IN]:清位值
/
void ClearBitMask(unsigned char reg,unsigned char mask)
{signed char tmp = 0x0;tmp = ReadRawRC(reg);WriteRawRC(reg, tmp & ~mask); // clear bit mask
} /
//功 能:通过RC522和ISO14443卡通讯 ,通过设置commandreg的值让pcd执行不同的命令,来与picc传递数据
//参数说明:Command[IN]:RC522命令字
// pInData[IN]:通过RC522发送到卡片的数据
// InLenByte[IN]:发送数据的字节长度
// pOutData[OUT]:接收到的卡片返回数据
// *pOutLenBit[OUT]:返回数据的位长度
/
signed char PcdComMF522(unsigned char Command, unsigned char *pInData, unsigned char InLenByte,unsigned char *pOutData, unsigned int *pOutLenBit)
{signed char status = MI_ERR;unsigned char irqEn = 0x00;unsigned char waitFor = 0x00;unsigned char lastBits;unsigned char n;unsigned int i;switch (Command){case PCD_AUTHENT:irqEn = 0x12;waitFor = 0x10;break;case PCD_TRANSCEIVE:irqEn = 0x77;waitFor = 0x30;break;default:break;}WriteRawRC(ComIEnReg,irqEn|0x80);ClearBitMask(ComIrqReg,0x80);WriteRawRC(CommandReg,PCD_IDLE);SetBitMask(FIFOLevelReg,0x80);for (i=0; i<InLenByte; i++){ WriteRawRC(FIFODataReg, pInData[i]); }WriteRawRC(CommandReg, Command);if (Command == PCD_TRANSCEIVE){ SetBitMask(BitFramingReg,0x80); }//i = 600;//根据时钟频率调整,操作M1卡最大等待时间25msi = 2000; //mcu已经将命令字写入rc522的commandreg,参数写入了FIFODataReg,rc522正在执行commandreg里的命令从mifare卡中取得相应的数据,//在rc522还未取得数据的时候,mcu等待一下,最多只需等待25ms,之后//mcu再去读取rc522的FIFODataReg即可读到 .如果在一个较快的mcu中,可以增大i值,以使等待时间延长一点,否则可能读取失败。do {n = ReadRawRC(ComIrqReg);i--;}while ((i!=0) && !(n&0x01) && !(n&waitFor));ClearBitMask(BitFramingReg,0x80);if (i!=0){ if(!(ReadRawRC(ErrorReg)&0x1B)){status = MI_OK;if (n & irqEn & 0x01){ status = MI_NOTAGERR; }if (Command == PCD_TRANSCEIVE){n = ReadRawRC(FIFOLevelReg);lastBits = ReadRawRC(ControlReg) & 0x07;if (lastBits){ *pOutLenBit = (n-1)*8 + lastBits; }else{ *pOutLenBit = n*8; }if (n == 0){ n = 1; }if (n > MAXRLEN){ n = MAXRLEN; }for (i=0; i<n; i++){ pOutData[i] = ReadRawRC(FIFODataReg); }}}else{ status = MI_ERR; }}SetBitMask(ControlReg,0x80); // stop timer nowWriteRawRC(CommandReg,PCD_IDLE); return status;
}/
//开启天线
//每次启动或关闭天险发射之间应至少有1ms的间隔
/
void PcdAntennaOn(void)
{unsigned char i;i = ReadRawRC(TxControlReg);if (!(i & 0x03)){SetBitMask(TxControlReg, 0x03);}
}/
//关闭天线
/
void PcdAntennaOff(void)
{ClearBitMask(TxControlReg, 0x03);
}/
//功 能:扣款和充值
//参数说明: dd_mode[IN]:命令字
// 0xC0 = 扣款
// 0xC1 = 充值
// addr[IN]:钱包地址
// pValue[IN]:4字节增(减)值,低位在前
//返 回: 成功返回MI_OK
/
/*signed char PcdValue(unsigned char dd_mode,unsigned char addr,unsigned char *pValue)
{signed char status;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; //unsigned char i;ucComMF522Buf[0] = dd_mode;ucComMF522Buf[1] = addr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }if (status == MI_OK){memcpy(ucComMF522Buf, pValue, 4);//for (i=0; i<16; i++)//{ ucComMF522Buf[i] = *(pValue+i); }CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);unLen = 0;status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);if (status != MI_ERR){ status = MI_OK; }}if (status == MI_OK){ucComMF522Buf[0] = PICC_TRANSFER;ucComMF522Buf[1] = addr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]); status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }}return status;
}*//
//功 能:备份钱包
//参数说明: sourceaddr[IN]:源地址
// goaladdr[IN]:目标地址
//返 回: 成功返回MI_OK
/
/*signed char PcdBakValue(unsigned char sourceaddr, unsigned char goaladdr)
{signed char status;unsigned int unLen;unsigned char ucComMF522Buf[MAXRLEN]; ucComMF522Buf[0] = PICC_RESTORE;ucComMF522Buf[1] = sourceaddr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }if (status == MI_OK){ucComMF522Buf[0] = 0;ucComMF522Buf[1] = 0;ucComMF522Buf[2] = 0;ucComMF522Buf[3] = 0;CalulateCRC(ucComMF522Buf,4,&ucComMF522Buf[4]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,6,ucComMF522Buf,&unLen);if (status != MI_ERR){ status = MI_OK; }}if (status != MI_OK){ return MI_ERR; }ucComMF522Buf[0] = PICC_TRANSFER;ucComMF522Buf[1] = goaladdr;CalulateCRC(ucComMF522Buf,2,&ucComMF522Buf[2]);status = PcdComMF522(PCD_TRANSCEIVE,ucComMF522Buf,4,ucComMF522Buf,&unLen);if ((status != MI_OK) || (unLen != 4) || ((ucComMF522Buf[0] & 0x0F) != 0x0A)){ status = MI_ERR; }return status;
}*/
rc522.c中需要注意的是对spi操作的时序问题,
micro2440在板晶振12MHZ,设置分后后FCLK=400MHZ,PCLK=50MHZ
而原板stc11f32所载晶振18.432MHZ,但此单片机是每机器周期1个震荡周期(晶振频率倒数),而一般的c51单片机是每机器周期12个振动周期。指令周期为若干机器周期。
下面是rc522.h
#include "2440addr.h"
/
//MF522命令字 一般是写入rc522的commandreg,rc522认识这命令代码,可以执行之而对卡片适当操作
/
#define PCD_IDLE 0x00 //取消当前命令
#define PCD_AUTHENT 0x0E //验证密钥
#define PCD_RECEIVE 0x08 //接收数据
#define PCD_TRANSMIT 0x04 //发送数据
#define PCD_TRANSCEIVE 0x0C //发送并接收数据
#define PCD_RESETPHASE 0x0F //复位
#define PCD_CALCCRC 0x03 //CRC计算/
//Mifare_One卡片命令字,一般是写入rc522的FIFODataReg中,rc522自动将其压入fifo,这些命令字mifare卡认识,可以执行之,以响应rc522
//mcu在将MF522命令字写入commandreg之前,应先把Mifare_One卡片命令字和该命令字需要的其他参数按照约定的格式写入FIFODataReg
//,因为一旦commandreg中有命令rc522就会执行,并且到fifo
//中寻找参数,所以其参数应该先放到fifo中。//Mifare_One卡片命令字一般是在main.c中由函数参数直接指定,表示要卡片执行什么动作,而实际上要卡片执行什么动作,只有rc522才能去下命令,
/
#define PICC_REQIDL 0x26 //寻天线区内未进入休眠状态
#define PICC_REQALL 0x52 //寻天线区内全部卡
#define PICC_ANTICOLL1 0x93 //防冲撞
#define PICC_ANTICOLL2 0x95 //防冲撞
#define PICC_AUTHENT1A 0x60 //验证A密钥
#define PICC_AUTHENT1B 0x61 //验证B密钥
#define PICC_READ 0x30 //读块
#define PICC_WRITE 0xA0 //写块
#define PICC_DECREMENT 0xC0 //扣款
#define PICC_INCREMENT 0xC1 //充值
#define PICC_RESTORE 0xC2 //调块数据到缓冲区
#define PICC_TRANSFER 0xB0 //保存缓冲区中数据
#define PICC_HALT 0x50 //休眠/
//MF522 FIFO长度定义
/
#define DEF_FIFO_LENGTH 64 //FIFO size=64byte
#define MAXRLEN 18/
//MF522寄存器定义
/
// PAGE 0
#define RFU00 0x00
#define CommandReg 0x01
#define ComIEnReg 0x02
#define DivlEnReg 0x03
#define ComIrqReg 0x04
#define DivIrqReg 0x05
#define ErrorReg 0x06
#define Status1Reg 0x07
#define Status2Reg 0x08
#define FIFODataReg 0x09
#define FIFOLevelReg 0x0A
#define WaterLevelReg 0x0B
#define ControlReg 0x0C
#define BitFramingReg 0x0D
#define CollReg 0x0E
#define RFU0F 0x0F
// PAGE 1
#define RFU10 0x10
#define ModeReg 0x11
#define TxModeReg 0x12
#define RxModeReg 0x13
#define TxControlReg 0x14
#define TxAutoReg 0x15
#define TxSelReg 0x16
#define RxSelReg 0x17
#define RxThresholdReg 0x18
#define DemodReg 0x19
#define RFU1A 0x1A
#define RFU1B 0x1B
#define MifareReg 0x1C
#define RFU1D 0x1D
#define RFU1E 0x1E
#define SerialSpeedReg 0x1F
// PAGE 2
#define RFU20 0x20
#define CRCResultRegM 0x21
#define CRCResultRegL 0x22
#define RFU23 0x23
#define ModWidthReg 0x24
#define RFU25 0x25
#define RFCfgReg 0x26
#define GsNReg 0x27
#define CWGsCfgReg 0x28
#define ModGsCfgReg 0x29
#define TModeReg 0x2A
#define TPrescalerReg 0x2B
#define TReloadRegH 0x2C
#define TReloadRegL 0x2D
#define TCounterValueRegH 0x2E
#define TCounterValueRegL 0x2F
// PAGE 3
#define RFU30 0x30
#define TestSel1Reg 0x31
#define TestSel2Reg 0x32
#define TestPinEnReg 0x33
#define TestPinValueReg 0x34
#define TestBusReg 0x35
#define AutoTestReg 0x36
#define VersionReg 0x37
#define AnalogTestReg 0x38
#define TestDAC1Reg 0x39
#define TestDAC2Reg 0x3A
#define TestADCReg 0x3B
#define RFU3C 0x3C
#define RFU3D 0x3D
#define RFU3E 0x3E
#define RFU3F 0x3F/
//和MF522通讯时返回的错误代码
/
#define MI_OK 0
#define MI_NOTAGERR (-1)
#define MI_ERR (-2)#define SHAQU1 0X01
#define KUAI4 0X04
#define KUAI7 0X07
#define REGCARD 0xa1
#define CONSUME 0xa2
#define READCARD 0xa3
#define ADDMONEY 0xa4/*
sbit spi_cs=P0^5;
sbit spi_ck=P0^6;
sbit spi_mosi=P0^7;
sbit spi_miso=P4^1;
sbit spi_rst=P2^7;#define SET_SPI_CS spi_cs=1
#define CLR_SPI_CS spi_cs=0#define SET_SPI_CK spi_ck=1
#define CLR_SPI_CK spi_ck=0#define SET_SPI_MOSI spi_mosi=1
#define CLR_SPI_MOSI spi_mosi=0#define STU_SPI_MISO spi_miso#define SET_RC522RST spi_rst=1
#define CLR_RC522RST spi_rst=0
*/#define SET_SPI_CS (rGPFDAT |=(1<<0));//片选脚输出1,gpfdat bit0=1
#define CLR_SPI_CS (rGPFDAT &=~(1<<0));//片选脚输出0, gpfdat bit0=0#define SET_SPI_CK (rGPFDAT |=(1<<1));//时钟脚输出1,gpfdat bit1=1
#define CLR_SPI_CK (rGPFDAT &=~(1<<1));//时钟脚输出0, gpfdat bit1=0#define SET_SPI_MOSI (rGPFDAT |=(1<<2));//主机mosi脚输出1,gpfdat bit2=1
#define CLR_SPI_MOSI (rGPFDAT &=~(1<<2));//主机mosi脚输出0, gpfdat bit2=0#define STU_SPI_MISO ((rGPFDAT >>3)&1) //取miso脚一位数据 ,gpfdat bit3#define SET_RC522RST (rGPFDAT |=(1<<4));//复位脚输出1,gpfdat bit4=1
#define CLR_RC522RST (rGPFDAT &=~(1<<4));//复位脚输出0, gpfdat bit4=0
在rc522.h中值的注意的是,最后这些置1 清0的宏,在c51下可以用位指令直接操作如注释掉的那些,但是arm中不能位寻址,要用与或指令去操作整个寄存器才能达到相同的目的。
http://download.csdn.net/detail/songqqnew/3716580
转载于:https://www.cnblogs.com/-song/archive/2011/10/23/3331944.html
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