Subversion Repositories FlightCtrl

// ######################## SPI - FlightCtrl ###################

#include "main.h"

//struct str_ToNaviCtrl_Version   ToNaviCtrl_Version;

//struct str_FromNaviCtrl_Version   FromNaviCtrl_Version;

struct str_ToNaviCtrl   ToNaviCtrl;

struct str_FromNaviCtrl   FromNaviCtrl;

unsigned char              SPI_BufferIndex;

unsigned char              SPI_RxBufferIndex;

volatile unsigned char     SPI_Buffer[sizeof(FromNaviCtrl) + 8];

unsigned char *SPI_TX_Buffer;

unsigned char SPITransferCompleted, SPI_ChkSum;

unsigned char SPI_RxDataValid;

unsigned char SPI_CommandSequence[] = { SPI_CMD_USER, SPI_CMD_STICK, SPI_CMD_USER, SPI_CMD_STICK, SPI_CMD_CAL_COMPASS };

unsigned char SPI_CommandCounter = 0;

#ifdef USE_SPI_COMMUNICATION

//------------------------------------------------------

void SPI_MasterInit(void)

{

  DDR_SPI |= (1<<DD_MOSI)|(1<<DD_SCK);    // Set MOSI and SCK output, all others input 

  SLAVE_SELECT_DDR_PORT |= (1 << SPI_SLAVE_SELECT);

  SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR1)|(0<<SPR0)|(0<<SPIE);   // Enable SPI, Master, set clock rate fck/64 

  SPSR = 0;//(1<<SPI2X);

  SLAVE_SELECT_PORT |=  (1 << SPI_SLAVE_SELECT);

  SPITransferCompleted = 1;

  //SPDR = 0x00;  // dummy write

  ToNaviCtrl.Sync1 = 0xAA;

  ToNaviCtrl.Sync2 = 0x83;

  ToNaviCtrl.Command = SPI_CMD_USER;

  ToNaviCtrl.IntegralNick = 0;

  ToNaviCtrl.IntegralRoll = 0;

  SPI_RxDataValid = 0;

}

//------------------------------------------------------

void SPI_StartTransmitPacket(void)

{

   //if ((SLAVE_SELECT_PORT & (1 << SPI_SLAVE_SELECT)) == 0) return;    // transfer of prev. packet not completed

   if (!SPITransferCompleted) return;

//   _delay_us(30); 

   SLAVE_SELECT_PORT &=  ~(1 << SPI_SLAVE_SELECT);  // SelectSlave

   SPI_TX_Buffer = (unsigned char *) &ToNaviCtrl;

   ToNaviCtrl.Command = SPI_CommandSequence[SPI_CommandCounter++];

   if (SPI_CommandCounter >= sizeof(SPI_CommandSequence)) SPI_CommandCounter = 0;

   SPITransferCompleted = 0;

   UpdateSPI_Buffer();                              // update buffer

   SPI_BufferIndex = 1;

  //ebugOut.Analog[16]++; 

   // -- Debug-Output ---

   //----

   asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

   asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

   asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

   ToNaviCtrl.Chksum = ToNaviCtrl.Sync1;

   SPDR = ToNaviCtrl.Sync1;                  // Start transmission 

//     SLAVE_SELECT_PORT |=  (1 << SPI_SLAVE_SELECT);   // DeselectSlave

}

//------------------------------------------------------

//SIGNAL(SIG_SPI)

void SPI_TransmitByte(void)

{

   static unsigned char SPI_RXState = 0;

   unsigned char rxdata;

   static unsigned char rxchksum;

   if (SPITransferCompleted) return;

   if (!(SPSR & (1 << SPIF))) return;

  SendSPI = 4;

//   _delay_us(30); 

  SLAVE_SELECT_PORT |=  (1 << SPI_SLAVE_SELECT);   // DeselectSlave

  rxdata = SPDR;

  switch ( SPI_RXState)

  {

  case 0:

                        SPI_RxBufferIndex = 0;

                        //DebugOut.Analog[17]++;

                        rxchksum = rxdata;  

                        if (rxdata == 0x81 )  { SPI_RXState  = 1;  }   // 1. Syncbyte ok 

           break;

   case 1:

                    if (rxdata == 0x55) { rxchksum += rxdata; SPI_RXState  = 2;  }   // 2. Syncbyte ok 

                 else SPI_RXState  = 0;    

                        //DebugOut.Analog[18]++;

           break;      

   case 2:

                   SPI_Buffer[SPI_RxBufferIndex++]= rxdata;             // get data

           //DebugOut.Analog[19]++;

           if (SPI_RxBufferIndex >= sizeof(FromNaviCtrl))

                   {  

                if (rxdata == rxchksum)

                        {

                  unsigned char *ptr = (unsigned char *)&FromNaviCtrl;

                          memcpy(ptr, (unsigned char *) SPI_Buffer,  sizeof(SPI_Buffer));

                          SPI_RxDataValid = 1;

                        }

                        else SPI_RxDataValid = 0;

                        SPI_RXState  = 0;  

                   }

                  else rxchksum += rxdata;

        break;   

  }            

   if (SPI_BufferIndex < sizeof(ToNaviCtrl))  

     {

           SLAVE_SELECT_PORT &=  ~(1 << SPI_SLAVE_SELECT);  // SelectSlave

           asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

           asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

           asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");         asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop"); asm volatile ("nop");

           SPDR = SPI_TX_Buffer[SPI_BufferIndex];

           ToNaviCtrl.Chksum += SPI_TX_Buffer[SPI_BufferIndex];

        //   SLAVE_SELECT_PORT |=  (1 << SPI_SLAVE_SELECT);   // DeselectSlave

         }

         else SPITransferCompleted = 1;  

         SPI_BufferIndex++;

}

//------------------------------------------------------

void UpdateSPI_Buffer(void)

{

  static unsigned char i =0;

  cli();

  ToNaviCtrl.IntegralNick = (int) (IntegralNick / 1024);

  ToNaviCtrl.IntegralRoll = (int) (IntegralRoll / 1024);

  ToNaviCtrl.GyroCompass = ErsatzKompass / GIER_GRAD_FAKTOR;

  ToNaviCtrl.AccNick = (int) ACC_AMPLIFY * (NaviAccNick / NaviCntAcc);

  ToNaviCtrl.AccRoll = (int) ACC_AMPLIFY * (Mittelwert_AccRoll / NaviCntAcc);

  NaviCntAcc = 0; NaviAccNick = 0; NaviAccRoll = 0;

//  ToNaviCtrl.User8 = Parameter_UserParam8;

//  ToNaviCtrl.CalState = WinkelOut.CalcState;

   switch(ToNaviCtrl.Command)  // 

   {

         case SPI_CMD_USER:

                                ToNaviCtrl.Param.Byte[0] = Parameter_UserParam1;

                                ToNaviCtrl.Param.Byte[1] = Parameter_UserParam2;

                                ToNaviCtrl.Param.Byte[2] = Parameter_UserParam3;

                                ToNaviCtrl.Param.Byte[3] = Parameter_UserParam4;

                                ToNaviCtrl.Param.Byte[4] = Parameter_UserParam5;

                                ToNaviCtrl.Param.Byte[5] = Parameter_UserParam6;

                                ToNaviCtrl.Param.Byte[6] = Parameter_UserParam7;

            break;

         case SPI_CMD_STICK:

                                ToNaviCtrl.Param.Byte[0] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_GAS]];

                                ToNaviCtrl.Param.Byte[1] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_GIER]];

                                ToNaviCtrl.Param.Byte[2] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_ROLL]];

                    ToNaviCtrl.Param.Byte[3] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_NICK]];

                                ToNaviCtrl.Param.Byte[4] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_POTI1]];

                                ToNaviCtrl.Param.Byte[5] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_POTI2]];

                                ToNaviCtrl.Param.Byte[6] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_POTI3]];

                    ToNaviCtrl.Param.Byte[7] = (char) PPM_in[EE_Parameter.Kanalbelegung[K_POTI4]];

            break;

         case SPI_CMD_CAL_COMPASS:

                                ToNaviCtrl.Param.Byte[0] = WinkelOut.CalcState;

            break;

   }

  sei();

  if (SPI_RxDataValid)

  {

    GPS_Nick = FromNaviCtrl.GPS_Nick;

    GPS_Roll = FromNaviCtrl.GPS_Roll;

    KompassValue = FromNaviCtrl.CompassValue;

    KompassRichtung = ((540 + KompassValue - KompassStartwert) % 360) - 180;

    if (FromNaviCtrl.BeepTime > beeptime) beeptime = FromNaviCtrl.BeepTime;

          switch (FromNaviCtrl.Command)

          {

            case  SPI_CMD_OSD_DATA:

//                                ToFlightCtrl.Param.Byte[0] = OsdBar;

//                                ToFlightCtrl.Param.Int[1]  = Distance;

                  break;

            case  SPI_CMD_GPS_POS:

//                                ToFlightCtrl.Param.Long[0]  = GPS_Data.Longitude;

//                                ToFlightCtrl.Param.Long[1]  = GPS_Data.Latitude;

                  break;

            case  SPI_CMD_GPS_TARGET:

//                                ToFlightCtrl.Param.Long[0]  = GPS_Data.TargetLongitude;

//                                ToFlightCtrl.Param.Long[1]  = GPS_Data.TargetLatitude;

                  break;

                default:

                  break;

          }

  }

  else

  {

//    KompassValue = 0;

//    KompassRichtung = 0;

        GPS_Nick = 0;

    GPS_Roll = 0;

  }

}

#endif