Exemple #1
0
void RC522Write(uint8 Address,uint8 Data)
{
	uint8 ModelAndAddress;
	ModelAndAddress=WRITE|(Address<<1); //生成模式/地址数据
	RC522TransEnable();		 			//选中从机
	SPISendChar(ModelAndAddress);		//传输模式/地址数据
	while(!SPI_send);		 			//等待发送
	SPISendChar(Data);		 			//发送需要写入的数据
	while(!SPI_send);		 			//等待发送
	RC522TransDisable();	 			//取消从机选择
}
Exemple #2
0
uint8 RC522Read(uint8 Address)
{
	uint8 ModelAndAddress;
	uint8 Re;
	ModelAndAddress=READ|(Address<<1);	//生成模式/地址数据
	RC522TransEnable();					//选中从机
	SPISendChar(ModelAndAddress);		//传输模式/地址数据
	while(!SPI_send); 					//等待发送
	SPIRenEnable();		  				//允许接收
	SPISendChar(0x00);					//读取地址中的信息(0x00不代表任何意义,用于换出数据)
	while(!SPI_send); 					//等待发送
	RC522TransDisable();				//取消从机选择
	SPIRenDisable();					//禁用接收
	Re=SPI_re;
	return Re;							//返回读取的数据
}
/*!
 * \brief SPIDrvWrite : Write 1 word to SPI
 *
 * \param u8Addr - SPI address
 * \param u16Content - Data to send
 *
 */
void SPIDrvWrite(UINT8 u8Addr, UINT16 u16Content)
{
  UINT8 u8TempValue=0;

  SPIClearRecieveStatReg(&u8TempValue); /* Clear status register (possible SPRF, SPTEF) */  
  SPIClearRecieveDataReg(&u8TempValue); /* 
                             * Clear receive data register. SPI entirely ready 
                             * for read or write 
                             */                       
  MC13192DisableInterrupts();   /* Necessary to prevent double SPI access */
  AssertCE();                   /* Enables MC13192 SPI */
  SPISendChar(u8Addr & 0x3F);   /*
                                 * Mask address, 6bit addr. 
                                 * Set write bit (i.e. 0). 
                                 */
  SPIWaitTransferDone();        /* 
                                 * For this bit to be set, SPTED MUST be set.
                                 * Now write content MSB
                                 */
  SPIClearRecieveDataReg(&u8TempValue);     /* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write 
                                 */
  SPISendChar((UINT8)(u16Content >> 8));    /* Write MSB */       
  SPIWaitTransferDone();        /* 
                                 * For this bit to be set, SPTED MUST be set. 
                                 * Now write content LSB 
                                 */
  SPIClearRecieveDataReg(&u8TempValue);     /* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write
                                 */
  SPISendChar((UINT8)(u16Content & 0x00FF));    /* Write LSB */
  SPIWaitTransferDone();        /* 
                                 * For this bit to be set, SPTED MUST be set.
                                 * Now read last of garbage
                                 */
  SPIClearRecieveDataReg(&u8TempValue);     /* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write 
                                 */
  DeAssertCE();                 /* Disables MC13192 SPI */
  MC13192RestoreInterrupts();   /* Restore MC13192 interrupt status */
}
/*!
 * \brief SPIDrvRead : Read 1 word from SPI
 *
 * \param u8Addr - SPI address
 *
 * \return u16Data -  u16Data[0] is the MSB, u16Data[1] is the LSB
 */
UINT16 SPIDrvRead(UINT8 u8Addr)
{
    UINT8 u8TempValue=0;
    UINT16  u16Data=0;            /* u16Data[0] is MSB, u16Data[1] is LSB */

    SPIClearRecieveStatReg(&u8TempValue);  /* Clear status register (possible SPRF, SPTEF) */  
    SPIClearRecieveDataReg(&u8TempValue);  /* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write
                                 */                       
    MC13192DisableInterrupts(); /* Necessary to prevent double SPI access */
    AssertCE();                 /* Enables MC13192 SPI */
    SPISendChar((u8Addr & 0x3f) | 0x80);   /* Mask address, 6bit addr, Set 
                                             * read bit. 
                                             */
    SPIWaitTransferDone();      /* For this bit to be set, SPTED MUST be set */
    SPIClearRecieveDataReg(&u8TempValue);   /* 
                                 * Clear receive data register. SPI 
                                 * entirely ready for read or write 
                                 */
    SPISendChar(u8Addr );       /*
                                 * Dummy write. Receive register of SPI 
                                 * will contain MSB
                                 */
    SPIWaitTransferDone();      /* 
                                 * For this bit to be set, SPTED MUST be 
                                 * set. Get MSB
                                 */
    SPIReadMSB(&u16Data);               /* MSB */
    SPISendChar(u8Addr);             /*
                                       * Dummy write. Waiting until after 
                                       * reading received data insures no 
                                       * overrun 
                                       */
    SPIWaitTransferDone();            /* 
                                       * For this bit to be set, SPTED MUST be 
                                       * set. Get LSB
                                       */
    ((UINT8*)&u16Data)[1] = SPIRead();    /* LSB */
    DeAssertCE();                     /* Disables MC13192 SPI */
    MC13192RestoreInterrupts();       /* Restore MC13192 interrupt status */
    return u16Data;
}
/*!
 * \brief RAMDrvReadRx : Read a block of data from RX packet RAM, whichever is selected
 *
 * \param *psRxPkt - Packet received
 *
 * \return u8Status
 */
UINT8 RAMDrvReadRx(tRxPacket *psRxPkt)
{
    UINT8 i, u8TempByte=0;        /* Temporary counters. */
    UINT8 u8MinLen=0;
    UINT8 u8TempValue=0;          /* 
                                 * Used by SPIClearRecieveDataReg to 
                                 * flush SPI1D register during read
                                 */
    UINT8  u8Status = 0;        /* Holder for the return value */
    UINT16 u16RxLength;
    
    if (gsPhyOptions.Bits.u1PromiscuousMode)
      u8MinLen = 3;
    else
      u8MinLen = 5;
  
    u16RxLength = SPIDrvRead(RX_PKT_LEN);   /* 
                                             * Read the RX packet length 
                                             * register contents 
                                             */
    u16RxLength &= 0x007F;          /* Mask out all but the RX packet length */

    /* MC13192 reports length with 2 CRC bytes and 2 Code bytes,
     * remove them. 
     */
    if (u16RxLength >= u8MinLen) {
        psRxPkt->u8DataLength = u16RxLength - (u8MinLen - 1); /*
                                                  * Less byte code
                                                  * and CRC
                                                  */
    }
    else {
        psRxPkt->u8DataLength = 0;
    }
        
    if ((psRxPkt->u8DataLength >= 1) && \
        (psRxPkt->u8DataLength <= psRxPkt->u8MaxDataLength)) { /* 
                                                          * If <5, the packet 
                                                          * is garbage
                                                          */
        SPIClearRecieveStatReg(&u8TempValue);   /* Clear status register (SPRF, SPTEF) */  
        SPIClearRecieveDataReg(&u8TempValue);   /* 
                                     * Clear receive data register. 
                                     * SPI entirely ready for read or write
                                     */                       
        MC13192DisableInterrupts(); /* Necessary to prevent double SPI access */
        AssertCE();                 /* Enables MC13192 SPI */
        SPISendChar(RX_PKT | 0x80); /* SPI RX ram data register */
        SPIWaitTransferDone();      /* For this bit to be set, SPTED 
                                     * MUST be set.
                                     */
        SPIClearRecieveDataReg(&u8TempValue);   /* 
                                     * Clear receive data register. 
                                     * SPI entirely ready for read or write 
                                     */
        SPISendChar(u8TempValue);   /* 
                                     * Dummy write. Receive register of SPI will 
                                     * contain MSB garbage for first read 
                                     */
        SPIWaitTransferDone();      /* For this bit to be set, SPTED MUST be set.*/
        SPIClearRecieveDataReg(&u8TempValue);   /* 
                                     * Clear receive data register. 
                                     * SPI entirely ready for read or write 
                                     */
        SPISendChar(u8TempValue);   /* 
                                     * Dummy write. Receive register of SPI will 
                                     * contain LSB garbage for first read 
                                     */
        SPIWaitTransferDone();      /* For this bit to be set, SPTED MUST be set.*/
        SPIClearRecieveDataReg(&u8TempValue);   /* 
                                     * Clear receive data register. 
                                     * SPI entirely ready for read or write 
                                     */
        if (gsPhyOptions.Bits.u1PromiscuousMode == 0) 
        {
          
                                      /* Byte codes */
          SPISendChar(u8TempValue);   /* 
                                       * Dummy write. Receive register of SPI will 
                                       * contain LSB garbage for first read 
                                       */
          SPIWaitTransferDone();      /* For this bit to be set, SPTED MUST be set.*/
          u8TempValue = SPIRead();    /* Read first code byte */
          SPISendChar(u8TempValue);   /* 
                                       * Dummy write. Receive register of SPI will 
                                       * contain LSB garbage for first read 
                                       */
          SPIWaitTransferDone();      /* For this bit to be set, SPTED MUST be set.*/
          u8TempValue = SPIRead();    /* Read second code byte */

        }
        u8TempByte = 0;             /* Byte counter for *contents */
        /* Word loop. Round up. Deduct CRC. */
        for (i=0; i<((u16RxLength-1)>>1); i++) { 
            SPISendChar(u8TempValue);/* 
                                     * Dummy write. Receive register of SPI 
                                     * will contain MSB
                                     */
            SPIWaitTransferDone();  /* 
                                     * For this bit to be set, SPTED MUST be 
                                     * set. Get MSB
                                     */
            /* For a trailing garbage byte, just read and discard */
            if ((u8TempByte + 3) == u16RxLength) { 
                SPIClearRecieveDataReg(&u8TempValue);                  /* Discard */
            }
            else {
                psRxPkt->pu8Data[u8TempByte + 1] = SPIRead();   /* Read MSB */
            }
            SPISendChar(u8TempValue);/*
                                     * Dummy write. Receive register of SPI 
                                     * will contain LSB
                                     */
            SPIWaitTransferDone();  /* 
                                     * For this bit to be set, SPTED MUST be
                                     * set. Get LSB
                                     */
            psRxPkt->pu8Data[u8TempByte] = SPIRead();   /* Read LSB */
            u8TempByte = (UINT8)(u8TempByte + 2);       /* Increment byte counter */
        }
        DeAssertCE();               /* Disables MC13192 SPI */
        psRxPkt->u8Status = SUCCESS;
        MC13192RestoreInterrupts(); /* Restore MC13192 interrupt status */
    }
/*!
 * \brief RAMDrvWriteTx : Write a block of data to TX packet RAM, whichever is selected
 *
 * \param *psTxPkt - Packet to write
 *
 */
void RAMDrvWriteTx(tTxPacket *psTxPkt)
{
    UINT8 i, u8TempByte=0, u8TempValue=0;   /* Temporary counters */ 
    UINT8 u8MinLen=0;

    UINT16  u16Reg=0;                     /* TX packet length register value */

    if (gsPhyOptions.Bits.u1PromiscuousMode)
      u8MinLen = 3;
    else
      u8MinLen = 5;

    u16Reg = SPIDrvRead(TX_PKT_LEN);    /* 
                                         * Read the TX packet length register 
                                         * contents 
                                         */
    u16Reg = (0xFF80 & u16Reg) | (psTxPkt->u8DataLength + (u8MinLen - 1)); /* 
                                                            * Mask out old 
                                                            * length setting and
                                                            * update. Add 2 for
                                                            * CRC and 2 for code bytes
                                                            */
    SPIDrvWrite(TX_PKT_LEN, u16Reg);    /* Update the TX packet length field */
    SPIClearRecieveStatReg(&u8TempValue);/* Clear status register 
                                         * (possible SPRF, SPTEF) 
                                         */
    SPIClearRecieveDataReg(&u8TempValue);   /* 
                                 * Clear receive data register. SPI entirely
                                 * ready for read or write
                                 */                       
    MC13192DisableInterrupts(); /* Necessary to prevent double SPI access */
    AssertCE();                 /* Enables MC13192 SPI */
    SPISendChar(TX_PKT);        /* SPI TX ram data register */
    SPIWaitTransferDone();      /* 
                                 * For this bit to be set, SPTED MUST be set. 
                                 * Now write content MSB 
                                 */
    SPIClearRecieveDataReg(&u8TempValue);   /* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write
                                 */
    if (!gsPhyOptions.Bits.u1PromiscuousMode)
    {
      
      SPISendChar(0xFF);          /* Send 1st Code Byte */
      SPIWaitTransferDone();      /* 
                                   * For this bit to be set, SPTED MUST be set. 
                                   * Now write content MSB 
                                   */
      SPISendChar(0x7E);          /* Send 2nd Code Byte */
      SPIWaitTransferDone();      /* 
                                   * For this bit to be set, SPTED MUST be set. 
                                   * Now write content MSB 
                                   */
      SPIClearRecieveDataReg(&u8TempValue);   /* 
                                   * Clear receive data register. SPI entirely 
                                   * ready for read or write
                                   */
    }
    u8TempByte = 0;             /* Byte counter for *contents */
    /* Word loop. Round up. */ 
    for (i=0; i<((psTxPkt->u8DataLength+1) >> 1); i++) { 
        SPISendChar(psTxPkt->pu8Data[u8TempByte + 1]);  /* Write MSB */
        SPIWaitTransferDone();  /* 
                                 * For this bit to be set, SPTED MUST be set. 
                                 * Now write content LSB 
                                 */
        SPIClearRecieveDataReg(&u8TempValue);/* 
                                 * Clear receive data register. SPI entirely
                                 * ready for read or write
                                 */
        SPISendChar(psTxPkt->pu8Data[u8TempByte]);     /* Write LSB */          
        u8TempByte = (UINT8)(u8TempByte + 2);           /* Increment byte counter */
        SPIWaitTransferDone();  /* For this bit to be set, SPTED MUST be set.*/
        SPIClearRecieveDataReg(&u8TempValue);/* 
                                 * Clear receive data register. SPI entirely 
                                 * ready for read or write
                                 */
    }
    DeAssertCE();                   /* Disables MC13192 SPI */
    MC13192RestoreInterrupts();     /* Restore MC13192 interrupt status */
}