qspi.h

一个嵌入式linux的驱动程序例子

// ioctl definitions

// use 'k' as magic number
#define SPI_IOC_MAGIC    'k'
#define SPI_ADSL_RESERVE 0
#define SPI_ADSL_PSD     1
#define SPI_ADSL_RMS     2
#define SPI_ADSL_ATT     3
#define SPI_ADSL_BALANCE 4
#define SPI_ADSL_FEXT    5
#define SPI_ADSL_NEXT    6
#define SPI_ADSL_VOL     7
#define SPI_ADSL_RES     8
#define SPI_ADSL_STOPTEST 9

#define SPI_CHECK_DATA    10 
#define SPI_SEND_BOOTDATA 11
#define SPI_SET_BOOTLEN   12
#define SPI_GET_DATA      13
#define SPI_POWER_OFF     14
#define SPI_POWER_ON      15
#define SPI_MODEM_RESET   16
#define SPI_BLIGHT_ON     17
#define SPI_BLIGHT_OFF    18
#define SPI_IOC_MAXNR     18

#define TestDataReady      1                         //checkData() return status
#define TestDataNotReady   0
#define TestDataTimeOut   -1
#define TestDataError     -2

#define DataPacket         4

#define statusIdle         0                         //spi status
#define statusWaittingData 1
#define statusBoottingDSP  2
#define statusDataOk       3

#define master 0
#define slave  1

class QSpi
{
 public:
  QSpi();
  ~QSpi();
  unsigned char Cmd;
  int status;
  unsigned char *buffer;
  int deviceHandle,bootHandle;
  int dataNumber,packetNumber;
  void  sendCmd(int masterSlave);
  void  checkData();                                 //return status 
  void  translateData(unsigned char*,float*,float*);
  void  bootDSP();
  float getResVolRms();
  float toFloat(unsigned char *);
};