发一个读写RC531的STM32F2XX的DEMO-第2页回答

发一个读写RC531的STM32F2XX的DEMO

2020-01-01 17:59发布

近期发现技术贴少了，苦于保密问题，也不好乱发。现在发一个STM32F2XX读取RC531的DEMO。
//------------------------------------------------------------------------------------------------------
extern void SPI1_Config(void);
extern unsigned char SPI1_ReadWriteByte(unsigned char TxData);
extern unsigned char Read_RC531_IRQ(void);

/* RC531RST 引脚 */

#define  RC531RST_SET()       RC531_RSTPD(1)                            /* 置 RC500RST 为高电平 */
#define  RC531RST_CLR()       RC531_RSTPD(0)                            /* 置 RC500RST 为低电平 */

/* RC531NSS 引脚 */

#define  RC531NSS_SET()       RC531_CS(1)                            /* 置 RC500RST 为高电平 */
#define  RC531NSS_CLR()       RC531_CS(0)                            /* 置 RC500RST 为低电平 */

//全局变量
static volatile MfCmdInfo MInfo;


volatile unsigned char SerBuffer[40];

static volatile MfCmdInfo    *MpIsrInfo;
static volatile unsigned char  *MpIsrOut;
volatile unsigned char MLastSelectedSnr[4];


//***********************************************************************
//以下代码为1uS的延时,用视波器调整的,很准,KEIL MDK编译,优化等级为0,频率120M
void tDelay_1us(unsigned int nDly){
   register unsigned char  n;
   while(nDly--){
   n = 22;
   while(n--);
   }
}
/****************************************************************************
* 名称：DelayNS()
* 功能：长软件延时。
* 入口参数：dly    延时参数，值越大，延时越久
* 出口参数：无
****************************************************************************/
void  delay_1ms(unsigned long  dly){
tDelay_1us(8000);  //1000us
}
/****************************************************************************
* 名称：delay_50us()
* 功能：长软件延时。
* 入口参数：dly    延时参数，值越大，延时越久
* 出口参数：无
****************************************************************************/
void delay_50us(unsigned char _50us){
tDelay_1us(40);  //50us
}
//*****************************************************************************
//不改动原来函数！必须传入数据
void ResetInfo(void){
memset((unsigned char *)&MInfo,0,sizeof( MInfo));
}
/****************************************************************************
* 名称：ReadRawIO()
* 功能：从一个地址读出一个数据(EEPROM)。
* 入口参数：Address  地址
* 出口参数：数据
****************************************************************************/
unsigned char ReadRawIO(unsigned char Address){
unsigned char a;
RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)|0x80);
a = SPI1_ReadWriteByte(0xff);  //亚指令！
SPI1_ReadWriteByte(0x00);
RC531NSS_SET();
return a;
}

/****************************************************************************
* 名称：WriteRawIO()
* 功能：往一个地址写一个数据(EEPROM)。
* 入口参数：Address  地址
         value 数据
* 出口参数：无
****************************************************************************/
void WriteRawIO(unsigned char Address, unsigned char value){
RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)&0x7f);
SPI1_ReadWriteByte(value);
RC531NSS_SET();
}
/****************************************************************************
* 名称：WriteIO()
* 功能：往一个地址写一个数据(EEPROM)。
* 入口参数：Address  地址
         value 数据
* 出口参数：无
****************************************************************************/
void WriteIO(unsigned char Address, unsigned char value){
RC531NSS_CLR();
SPI1_ReadWriteByte(0x00);
SPI1_ReadWriteByte(GetRegPage(Address));
RC531NSS_SET();

RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)&0x7f);
SPI1_ReadWriteByte(value);
RC531NSS_SET();
}
/****************************************************************************
* 名称：ReadIO()
* 功能：从一个地址读出一个数据(EEPROM)。
* 入口参数：Address  地址
* 出口参数：数据
****************************************************************************/
unsigned char ReadIO(unsigned char Address) {
unsigned char a;
RC531NSS_CLR();
SPI1_ReadWriteByte(0x00);
SPI1_ReadWriteByte(GetRegPage(Address));
RC531NSS_SET();

RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)|0x80);
a = SPI1_ReadWriteByte(0xff);  //亚指令！
SPI1_ReadWriteByte(0x00);
RC531NSS_SET();
return a;
}

/****************************************************************************
* 名称：RFRegWrite()
* 功能：往一个地址写一个数据(EEPROM)。
* 入口参数：Address  地址
         value 数据
* 出口参数：无
****************************************************************************/
void RFRegWrite(unsigned char Address, unsigned char value){
RC531NSS_CLR();
SPI1_ReadWriteByte(0x00);
SPI1_ReadWriteByte(GetRegPage(Address));
RC531NSS_SET();

RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)&0x7f);
SPI1_ReadWriteByte(value);
RC531NSS_SET();
}
/****************************************************************************
* 名称：ReadIO()
* 功能：从一个地址读出一个数据(EEPROM)。
* 入口参数：Address  地址
* 出口参数：数据
****************************************************************************/
unsigned char RFRegRead(unsigned char Address){
unsigned char a;
RC531NSS_CLR();
SPI1_ReadWriteByte(0x00);
SPI1_ReadWriteByte(GetRegPage(Address));
RC531NSS_SET();

RC531NSS_CLR();
SPI1_ReadWriteByte((Address<<1)|0x80);
a = SPI1_ReadWriteByte(0xff);  //亚指令！
SPI1_ReadWriteByte(0x00);
RC531NSS_SET();
return a;
}
/****************************************************************************
* 名称：SetBitMask()
* 功能：清一个bit
* 入口参数：reg    内存
         mask俺码
* 出口参数：无
****************************************************************************/
char SetBitMask(unsigned char reg,unsigned char mask){
char tmp = 0x00;

tmp = ReadIO(reg);
WriteIO(reg,tmp | mask);  // set bit mask
return 0x00;
}
/****************************************************************************
* 名称：ClearBitMask()
* 功能：清一个bit
* 入口参数：reg    内存
         mask俺码
* 出口参数：无
****************************************************************************/
char ClearBitMask(unsigned char reg,unsigned char mask){
char tmp = 0x00;

tmp = ReadIO(reg);
WriteIO(reg,tmp & ~mask);  // clear bit mask
return 0x00;
}
/****************************************************************************
* 名称：FlushFIFO()
* 功能：清除内部FIFO
* 入口参数：无
* 出口参数：无
****************************************************************************/
void FlushFIFO(void){
SetBitMask(RegControl,0x01);
}
/****************************************************************************
* 名称：M500PcdCmd()
* 功能：清一个bit
* 入口参数：unsigned char cmd,
         unsigned char *rcv,
         MfCmdInfo idata *info
* 出口参数：0正常,其它错误码
****************************************************************************/
char  M500PcdCmd(unsigned char cmd,
               unsigned char *rcv,
               MfCmdInfo  *info){
char status = MI_OK;
unsigned char irqEn = 0x00;
unsigned char waitFor = 0x00;
unsigned int timecnt = 0;
char tmpStatus ;
unsigned char lastBits;
WriteIO(RegInterruptEn,0x7F);             //开中断
WriteIO(RegInterruptRq,0x7F);             //清中断
WriteIO(RegCommand,PCD_IDLE);             //清除指令

FlushFIFO();
MpIsrInfo = info;
MpIsrOut = rcv;

info->irqSource = 0x00;

switch(cmd){
      case PCD_IDLE:                         //0x00    无指令,清指令
         irqEn = 0x00;
         waitFor = 0x00;
         break;
      case PCD_WRITEE2:                      //0x01    写FIFO,并定入EEPROM
         irqEn = 0x11;
         waitFor = 0x10;
         break;
      case PCD_READE2:                      //0x03    从EEPROM取数据并写入FIFO
         irqEn = 0x07;
         waitFor = 0x04;
         break;
      case PCD_LOADCONFIG:                   //0x07    从EEPROM读数据并用于初始化
      case PCD_LOADKEYE2:                   //0x0b    将密钥从EEPROM复制到KEY缓存
      case PCD_AUTHENT1:                   //0x0c    执行Cryptol算法的认证过程
         irqEn = 0x05;
         waitFor = 0x04;
         break;
      case PCD_CALCCRC:                      //0x12    激活CRC
         irqEn = 0x11;
         waitFor = 0x10;
         break;
      case PCD_AUTHENT2:                   //0x14    执行Cryptol算法的认证过程二
         irqEn = 0x04;
         waitFor = 0x04;
         break;
      case PCD_RECEIVE:                      //0x16    接收
         info->nBitsReceived = -(ReadIO(RegBitFraming) >> 4);
         irqEn = 0x06;
         waitFor = 0x04;

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