STM32 RC522串口驱动程序 （简单直接）
卢黎昕
rc522作为使用非常多的读写卡芯片，使用SPI芯片读写应用已经非常广了。但有些时候我们只有串口可以使用，或者我们觉得串口使用更加方便，那么就必须要编写串口的驱动程序。不过很难找到可以直接使用的串口程序。所以在此将我这边写好的串口驱动写好如下：
直接上代码
下面是RC522.C的驱动文件。支持读写卡号8位数据。rc522用的是stm32 的串口3，调试显示是串口1；
#include "rc522.h"
#include "delay.h"
/
//MF522命令字
/
#define PCD_IDLE 0x00 //取消当前命令
#define PCD_CALCCRC 0x03 //CRC计算
#define PCD_TRANSMIT 0x04 //发送数据
#define PCD_RECEIVE 0x08 //接收数据
#define PCD_TRANSCEIVE 0x0C //发送并接收数据
#define PCD_AUTHENT 0x0E //验证密钥
#define PCD_RESETPHASE 0x0F //复位
/
//Mifare_One卡片命令字
/
#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
//==============================================================================================
void UART3_init(void)/*串口3MC20通信*/
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3 , ENABLE);
USART_DeInit(USART3); //复位串口3
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART3, &USART_InitStructure);
USART_Cmd(USART3, ENABLE);
}
/***********************RC522 函数宏定义**********************/
u8 UART3_ReadWriteByte(u8 TxData)
{
while (USART_GetFlagStatus(USART3, USART_FLAG_TXE) == RESET||USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET) {}
USART_SendData(USART3,TxData);
delay_ms(5);
return USART_ReceiveData(USART3);
}
//==============================================================================================
void M500PcdConfigISOType( u8 type ); //工作方式
void PcdReset( void ); //复位
char PcdRequest( u8 req_code, u8 * pTagType ); //寻卡
char PcdAnticoll( u8 * pSnr); //读卡号
char PcdSelect( u8 * pSnr );
char PcdAuthState( u8 ucAuth_mode, u8 ucAddr, u8 * pKey, u8 * pSnr );
char PcdWrite( u8 ucAddr, u8 * pData );
char PcdRead( u8 ucAddr, u8 * pData );
void PcdAntennaOn ( void );
void PcdAntennaOff ( void );
void RC522_Init(void)
{
UART3_init();//初始化spi3
delay_ms(1000);
PcdReset();
M500PcdConfigISOType ( 'A' );//设置工作方式
}
//
// M1卡分为16个扇区，每个扇区由四个块（块0、块1、块2、块3）组成
// 将16个扇区的64个块按绝对地址编号为：0~63
// 第0个扇区的块0（即绝对地址0块），用于存放厂商代码，已经固化不可更改
// 每个扇区的块0、块1、块2为数据块，可用于存放数据
// 每个扇区的块3为控制块（绝对地址为:块3、块7、块11.....）包括密码A，存取控制、密码B等
/*全局变量*/
unsigned char CT[2];//卡类型
unsigned char SN[4]; //卡号
unsigned char RFID[16]; //存放RFID
unsigned char total=0;
u8 KEY[6]={0xff,0xff,0xff,0xff,0xff,0xff};
u8 AUDIO_OPEN[6] = {0xAA, 0x07, 0x02, 0x00, 0x09, 0xBC};
unsigned char RFID1[16]={0x00,0x00,0x00,0x00,0x00,0x00,0xff,0x07,0x80,0x29,0xff,0xff,0xff,0xff,0xff,0xff};
/*函数声明*/
unsigned char status;
unsigned char s=0x08;
/**************************************************************************************
* 函数名：WriteRawRC 描述 ：写RC522寄存器输入 ：ucAddress，寄存器地址 ucValue，写入寄存器的值
*/
void WriteRawRC ( u8 ucAddress, u8 ucValue )
{
u8 ch = UART3_ReadWriteByte (ucAddress& 0x3F); // 写入寄存器地址(最低6位为实际地址，次高为保留为0，最高位为1)
if(ch != ucAddress) printf("not equal!!\r\n");
UART3_ReadWriteByte (ucValue);
}
/**************************************************************************************
* 函数名：ReadRawRC 读取寄存器的当前值
*/
u8 ReadRawRC ( u8 ucAddress )
{
return UART3_ReadWriteByte((ucAddress&0x3F) | 0x80);
}
/**************************************************************************************
* 函数名：ClearBitMask 对RC522寄存器清位
*/
void ClearBitMask ( u8 ucReg, u8 ucMask )
{
u8 ucTemp;
ucTemp = ReadRawRC ( ucReg );
WriteRawRC ( ucReg, ucTemp & ( ~ ucMask) ); // clear bit mask
}
/**************************************************************************************
* 函数名：SetBitMask 对RC522寄存器置位
*/
void SetBitMask ( u8 ucReg, u8 ucMask )
{
u8 ucTemp;
ucTemp = ReadRawRC ( ucReg );
WriteRawRC ( ucReg, ucTemp | ucMask ); // set bit mask
}
/**************************************************************************************
* 函数名：PcdAntennaOn 开启天线
*/
void PcdAntennaOn ( void )
{
u8 uc;
uc = ReadRawRC ( TxControlReg );
if ( ! ( uc & 0x03 ) )
SetBitMask(TxControlReg, 0x03);
}
/**************************************************************************************
* 函数名：PcdAntennaOff 关闭天线
*/
void PcdAntennaOff ( void )
{
ClearBitMask ( TxControlReg, 0x03 );
}
/**************************************************************************************
* 描述 ：设置RC522的工作方式 ucType，工作方式
*/
void M500PcdConfigISOType ( u8 ucType )
{
if ( ucType == 'A') //ISO14443_A
{
ClearBitMask ( Status2Reg, 0x08 );
WriteRawRC ( ModeReg, 0x3D );//3F
WriteRawRC ( RxSelReg, 0x86 );//84
WriteRawRC( RFCfgReg, 0x7F ); //4F
WriteRawRC( TReloadRegL, 30 );//tmoLength);// TReloadVal = 'h6a =tmoLength(dec)
WriteRawRC ( TReloadRegH, 0 );
WriteRawRC ( TModeReg, 0x8D );
WriteRawRC ( TPrescalerReg, 0x3E );
delay_us ( 2 );
PcdAntennaOn ();//开天线
}
}
/**************************************************************************************
* 函数名：PcdComMF522
* 描述 ：通过RC522和ISO14443卡通讯
* 输入 ：ucCommand，RC522命令字
* pInData，通过RC522发送到卡片的数据
* ucInLenByte，发送数据的字节长度
* pOutData，接收到的卡片返回数据
* pOutLenBit，返回数据的位长度
* 返回 : 状态值 MI_OK，成功
*/
char PcdComMF522 ( u8 ucCommand, u8 * pInData, u8 ucInLenByte, u8 * pOutData, u32 * pOutLenBit )
{
char cStatus = MI_ERR;
u8 ucIrqEn = 0x00;
u8 ucWaitFor = 0x00;
u8 ucLastBits;
u8 ucN;
u32 ul;
switch ( ucCommand )
{
case PCD_AUTHENT: //Mifare认证
ucIrqEn = 0x12; //允许错误中断请求ErrIEn 允许空闲中断IdleIEn
ucWaitFor = 0x10; //认证寻卡等待时候 查询空闲中断标志位
break;
case PCD_TRANSCEIVE: //接收发送 发送接收
ucIrqEn = 0x77; //允许TxIEn RxIEn IdleIEn LoAlertIEn ErrIEn TimerIEn
ucWaitFor = 0x30; //寻卡等待时候 查询接收中断标志位与 空闲中断标志位
break;
default:
break;
}
WriteRawRC ( ComIEnReg, ucIrqEn | 0x80 ); //IRqInv置位管脚IRQ与Status1Reg的IRq位的值相反
ClearBitMask ( ComIrqReg, 0x80 ); //Set1该位清零时，CommIRqReg的屏蔽位清零
WriteRawRC ( CommandReg, PCD_IDLE ); //写空闲命令
SetBitMask ( FIFOLevelReg, 0x80 ); //置位FlushBuffer清除内部FIFO的读和写指针以及ErrReg的BufferOvfl标志位被清除
for ( ul = 0; ul < ucInLenByte; ul ++ )
WriteRawRC ( FIFODataReg, pInData [ ul ] ); //写数据进FIFOdata
WriteRawRC ( CommandReg, ucCommand ); //写命令
if ( ucCommand == PCD_TRANSCEIVE )
SetBitMask(BitFramingReg,0x80); //StartSend置位启动数据发送 该位与收发命令使用时才有效
ul = 1000;//根据时钟频率调整，操作M1卡最大等待时间25ms
do //认证 与寻卡等待时间
{
ucN = ReadRawRC ( ComIrqReg ); //查询事件中断
ul --;
}
while ( ( ul != 0 ) && ( ! ( ucN & 0x01 ) ) && ( ! ( ucN & ucWaitFor ) ) ); //退出条件i=0,定时器中断，与写空闲命令
ClearBitMask ( BitFramingReg, 0x80 ); //清理允许StartSend位
if ( ul != 0 )
{
if ( ! (( ReadRawRC ( ErrorReg ) & 0x1B )) ) //读错误标志寄存器BufferOfI CollErr ParityErr ProtocolErr
{
cStatus = MI_OK;
if ( ucN & ucIrqEn & 0x01 ) //是否发生定时器中断
cStatus = MI_NOTAGERR;
if ( ucCommand == PCD_TRANSCEIVE )
{
ucN = ReadRawRC ( FIFOLevelReg ); //读FIFO中保存的字节数
ucLastBits = ReadRawRC ( ControlReg ) & 0x07; //最后接收到得字节的有效位数
if ( ucLastBits )
* pOutLenBit = ( ucN - 1 ) * 8 + ucLastBits; //N个字节数减去1（最后一个字节）+最后一位的位数 读取到的数据总位数
else
* pOutLenBit = ucN * 8; //最后接收到的字节整个字节有效
if ( ucN == 0 )
ucN = 1;
if ( ucN > MAXRLEN )
ucN = MAXRLEN;
for ( ul = 0; ul < ucN; ul ++ )
pOutData [ ul ] = ReadRawRC ( FIFODataReg );
}
}
else
cStatus = MI_ERR;
//printf("ErrorReg=%d\r\n",ErrorReg);
}
SetBitMask ( ControlReg, 0x80 ); // stop timer now
WriteRawRC ( CommandReg, PCD_IDLE );
return cStatus;
}
//=========================================RC522_Handel================================================//
bool RC522_READ(u8 * str)
{
status = PcdRequest(PICC_REQALL,CT);//寻卡
if(status==MI_OK)//寻卡成功
{
status=MI_ERR;
status = PcdAnticoll(SN);//防冲撞
}
if (status==MI_OK)//防衝撞成功
{
status=MI_ERR;
status =PcdSelect(SN);
}
if(status==MI_OK)//選卡成功
{
status=MI_ERR;
status =PcdAuthState(0x60,0x09,KEY,SN);
}
if(status==MI_OK)//驗證成功
{
status=MI_ERR;
status=PcdRead(s,RFID);
}
if(status==MI_OK)//讀卡成功
{
status=MI_ERR;
memset(str,0,10);
memcpy(str,RFID,9); //显示卡的ID号
return 1;
}
return 0;
}
//=========================================RC522_Handel================================================//
bool RC522_WRITE(u8 * msg)
{
if(msg == NULL)return false;
status = PcdRequest(PICC_REQALL,CT);//寻卡
if(status==MI_OK)//寻卡成功
{
status=MI_ERR;
status = PcdAnticoll(SN);//防冲撞
}
if (status==MI_OK)//防衝撞成功
{
status=MI_ERR;
status =PcdSelect(SN);
}
if(status==MI_OK)//選卡成功
{
status=MI_ERR;
status =PcdAuthState(0x60,0x09,KEY,SN);
}
if(status==MI_OK)//驗證成功
{
status=MI_ERR;
status=PcdWrite(s,msg);
}
if(status==MI_OK)//写卡成功
return true;
return false;
}
/*********************************************************************************************************************
* 函数名：PcdRequest 寻卡
* 输入 ：ucReq_code，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，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 : 状态值 MI_OK，成功
*/
char PcdRequest ( u8 ucReq_code, u8 * pTagType )
{
char cStatus;
u8 ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ClearBitMask ( Status2Reg, 0x08 ); //清理指示MIFARECyptol单元接通以及所有卡的数据通信被加密的情况
WriteRawRC ( BitFramingReg, 0x07 ); // 发送的最后一个字节的 七位
SetBitMask ( TxControlReg, 0x03 ); //TX1,TX2管脚的输出信号传递经发送调制的13.56的能量载波信号
ucComMF522Buf [ 0 ] = ucReq_code; //存入 卡片命令字
cStatus = PcdComMF522( PCD_TRANSCEIVE,ucComMF522Buf, 1, ucComMF522Buf, & ulLen ); //寻卡
if ( ( cStatus == MI_OK ) && ( ulLen == 0x10 ) ) //寻卡成功返回卡类型
{
* pTagType = ucComMF522Buf [ 0 ];
* ( pTagType + 1 ) = ucComMF522Buf [ 1 ];
}
else
cStatus = MI_ERR;
return cStatus;
}
/************************************************************************************************************
* 函数名：PcdAnticoll 防冲撞：pSnr，卡片序列号，4字节
* 返回 : 状态值 MI_OK，成功
*/
char PcdAnticoll ( u8 * pSnr )
{
char cStatus;
u8 uc, ucSnr_check = 0;
u8 ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ClearBitMask ( Status2Reg, 0x08 ); //清MFCryptol On位 只有成功执行MFAuthent命令后，该位才能置位
WriteRawRC ( BitFramingReg, 0x00); //清理寄存器 停止收发
ClearBitMask ( CollReg, 0x80 ); //清ValuesAfterColl所有接收的位在冲突后被清除
ucComMF522Buf [ 0 ] = 0x93; //卡片防冲突命令
ucComMF522Buf [ 1 ] = 0x20;
cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 2, ucComMF522Buf, & ulLen);//与卡片通信
if ( cStatus == MI_OK) //通信成功
{
for ( uc = 0; uc < 4; uc ++ )
{
* ( pSnr + uc ) = ucComMF522Buf [ uc ]; //读出UID
ucSnr_check ^= ucComMF522Buf [ uc ];
}
if ( ucSnr_check != ucComMF522Buf [ uc ] )
cStatus = MI_ERR;
}
SetBitMask ( CollReg, 0x80 );
return cStatus;
}
/************************************************************************************************************
* 函数名：CalulateCRC
* 描述 ：用RC522计算CRC16
* 输入 ：pIndata，计算CRC16的数组
* ucLen，计算CRC16的数组字节长度
* pOutData，存放计算结果存放的首地址
*/
void CalulateCRC ( u8 * pIndata, u8 ucLen, u8 * pOutData )
{
u8 uc, ucN;
ClearBitMask(DivIrqReg,0x04);
WriteRawRC(CommandReg,PCD_IDLE);
SetBitMask(FIFOLevelReg,0x80);
for ( uc = 0; uc < ucLen; uc ++)
WriteRawRC ( FIFODataReg, * ( pIndata + uc ) );
WriteRawRC ( CommandReg, PCD_CALCCRC );
uc = 0xFF;
do
{
ucN = ReadRawRC ( DivIrqReg );
uc --;
} while ( ( uc != 0 ) && ! ( ucN & 0x04 ) );
pOutData [ 0 ] = ReadRawRC ( CRCResultRegL );
pOutData [ 1 ] = ReadRawRC ( CRCResultRegM );
}
/************************************************************************************************************
* 函数名：PcdSelect
* 描述 ：选定卡片
* 输入 ：pSnr，卡片序列号，4字节
* 返回 : 状态值
* = MI_OK，成功
* 调用 ：外部调用
*/
char PcdSelect ( u8 * pSnr )
{
char ucN;
u8 uc;
u8 ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ucComMF522Buf [ 0 ] = PICC_ANTICOLL1;
ucComMF522Buf [ 1 ] = 0x70;
ucComMF522Buf [ 6 ] = 0;
for ( uc = 0; uc < 4; uc ++ )
{
ucComMF522Buf [ uc + 2 ] = * ( pSnr + uc );
ucComMF522Buf [ 6 ] ^= * ( pSnr + uc );
}
CalulateCRC ( ucComMF522Buf, 7, & ucComMF522Buf [ 7 ] );
ClearBitMask ( Status2Reg, 0x08 );
ucN = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 9, ucComMF522Buf, & ulLen );
if ( ( ucN == MI_OK ) && ( ulLen == 0x18 ) )
ucN = MI_OK;
else
ucN = MI_ERR;
return ucN;
}
/************************************************************************************************************
* 函数名：PcdAuthState 验证卡片密码
* 输入 ：ucAuth_mode，密码验证模式
* = 0x60，验证A密钥
* = 0x61，验证B密钥
* u8 ucAddr，块地址
* pKey，密码
* pSnr，卡片序列号，4字节
* 返回 : 状态值MI_OK，成功
*/
char PcdAuthState ( u8 ucAuth_mode, u8 ucAddr, u8 * pKey, u8 * pSnr )
{
char cStatus;
u8 uc, ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ucComMF522Buf [ 0 ] = ucAuth_mode;
ucComMF522Buf [ 1 ] = ucAddr;
for ( uc = 0; uc < 6; uc ++ )
ucComMF522Buf [ uc + 2 ] = * ( pKey + uc );
for ( uc = 0; uc < 6; uc ++ )
ucComMF522Buf [ uc + 8 ] = * ( pSnr + uc );
cStatus = PcdComMF522 ( PCD_AUTHENT, ucComMF522Buf, 12, ucComMF522Buf, & ulLen );
if ( ( cStatus != MI_OK ) || ( ! ( ReadRawRC ( Status2Reg ) & 0x08 ) ) )
{
if(cStatus != MI_OK)
printf("666");
else
printf("888");
cStatus = MI_ERR;
}
return cStatus;
}
/**********************************************************************************************
* 函数名：PcdWrite B写数据到M1卡一块 NpData，写入的数据，16字节
* 返回 : 状态值MI_OK，成功
*/
char PcdWrite ( u8 ucAddr, u8 * pData )
{
char cStatus;
u8 uc, ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ucComMF522Buf [ 0 ] = PICC_WRITE;
ucComMF522Buf [ 1 ] = ucAddr;
CalulateCRC ( ucComMF522Buf, 2, & ucComMF522Buf [ 2 ] );
cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 4, ucComMF522Buf, & ulLen );
if ( ( cStatus != MI_OK ) || ( ulLen != 4 ) || ( ( ucComMF522Buf [ 0 ] & 0x0F ) != 0x0A ) )
cStatus = MI_ERR;
if ( cStatus == MI_OK )
{
memcpy(ucComMF522Buf, pData, 16);
for ( uc = 0; uc < 16; uc ++ )
ucComMF522Buf [ uc ] = * ( pData + uc );
CalulateCRC ( ucComMF522Buf, 16, & ucComMF522Buf [ 16 ] );
cStatus = PcdComMF522 ( PCD_TRANSCEIVE, ucComMF522Buf, 18, ucComMF522Buf, & ulLen );
if ( ( cStatus != MI_OK ) || ( ulLen != 4 ) || ( ( ucComMF522Buf [ 0 ] & 0x0F ) != 0x0A ) )
cStatus = MI_ERR;
}
return cStatus;
}
/**********************************************************************************************
* 函数名：PcdRead读取M1卡一块数据 pData，读出的数据，16字节
* 返回 : 状态值 MI_OK，成功
*/
char PcdRead ( u8 ucAddr, u8 * pData )
{
char cStatus;
u8 uc, ucComMF522Buf [ MAXRLEN ];
u32 ulLen;
ucComMF522Buf [ 0 ] = PICC_READ;
ucComMF522Buf [ 1 ] = ucAddr;
CalulateCRC ( ucComMF522Buf, 2, & ucComMF522Buf [ 2 ] );
cStatus = PcdComMF522 (PCD_TRANSCEIVE, ucComMF522Buf, 4, ucComMF522Buf, & ulLen);
if ( ( cStatus == MI_OK ) && ( ulLen == 0x90 ) )
{
for ( uc = 0; uc < 16; uc ++ )
* ( pData + uc ) = ucComMF522Buf [ uc ];
}
else
cStatus = MI_ERR;
return cStatus;
}
/**********************************************************************************************
*/
/*
* 函数名：PcdRese
* 描述 ：复位RC522
*/
void PcdReset ( void )
{
delay_us ( 4 );
WriteRawRC ( CommandReg, 0x0f );
while( ReadRawRC ( CommandReg ) & 0x10 );
ReadRawRC ( CommandReg );
delay_us ( 5 );
WriteRawRC ( ModeReg, 0x3D ); //定义发送和接收常用模式 和Mifare卡通讯，CRC初始值0x6363
WriteRawRC ( TReloadRegL, 30 ); //16位定时器低位
WriteRawRC ( TReloadRegH, 0 ); //16位定时器高位
WriteRawRC ( TModeReg, 0x8D ); //定义内部定时器的设置
WriteRawRC ( TPrescalerReg, 0x3E ); //设置定时器分频系数
WriteRawRC ( TxAutoReg, 0x40 ); //调制发送信号为100%ASK
}
/* 该测试用例测试中 */
void test(void){
while(1){
printf("================================\r\n");
delay_ms(1000);
u32 i = 0;
while(i<0x40){
u8 ch = ReadRawRC(i);
printf("%02x ",ch);
i++;
delay_ms(10);
if(i%16 == 0)
printf("\r\n");
}
static u32 t = 0;
if(t++ == 5){
WriteRawRC(WaterLevelReg,0x01);
u8 ch = ReadRawRC(WaterLevelReg);
printf("%02x\r\n",ch);
}else if(t == 8){
WriteRawRC(WaterLevelReg,0x02);
u8 ch = ReadRawRC(WaterLevelReg);
printf("%02x\r\n",ch);
}else if(t == 12){
WriteRawRC(WaterLevelReg,0x03);
u8 ch = ReadRawRC(WaterLevelReg);
printf("%02x\r\n",ch);
}
}
}
下发是头文件rc522.h
#ifndef _RC522_H_
#define _RC522_H_
#include "sys.h"
bool RC522_READ(u8 * str); //读卡
bool RC522_WRITE(u8 * msg); //写卡
void RC522_Init(void); //初始化
void test(void);
#endif
最后是我用来测试的main文件
包含写卡，和读卡测试。亲测可以使用。
#include "stm32f10x.h"
#include "uart.h"
#include "sys.h"
#include "rc522.h"
int main(void)
{
u8 IC[50] = {0};
delay_init();
UART1_init();
delay_ms(2000);
RC522_Init();
printf("RC522_UART_TEST...\r\n");
printf(" 写卡开始...\r\n");
while(!RC522_WRITE((u8 *)"12121212")){};
printf(" 写卡成功...\r\n");
while(1){
if(RC522_READ(IC)){
printf("%s\r\n",IC);
delay_ms(500);
}
delay_ms(100);
printf("waitting...\r\n");
}
}
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