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;
  signed int tmp;
  cli();
 
  ToNaviCtrl.IntegralNick = (int) (IntegralNick / 108);
  ToNaviCtrl.IntegralRoll = (int) (IntegralRoll / 108);
  ToNaviCtrl.GyroCompass = ErsatzKompass / GIER_GRAD_FAKTOR;
  ToNaviCtrl.AccNick = (int) ACC_AMPLIFY * (NaviAccNick / NaviCntAcc);
  ToNaviCtrl.AccRoll = (int) ACC_AMPLIFY * (NaviAccRoll / 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:
                tmp = PPM_in[EE_Parameter.Kanalbelegung[K_GAS]];  if(tmp > 128) tmp = 128; else if(tmp < -127) tmp = -127;
                                ToNaviCtrl.Param.Byte[0] = (char) tmp;
                tmp = PPM_in[EE_Parameter.Kanalbelegung[K_GIER]]; if(tmp > 128) tmp = 128; else if(tmp < -127) tmp = -127;
                                ToNaviCtrl.Param.Byte[1] = (char) tmp;
                tmp = PPM_in[EE_Parameter.Kanalbelegung[K_ROLL]]; if(tmp > 128) tmp = 128; else if(tmp < -127) tmp = -127;
                                ToNaviCtrl.Param.Byte[2] = (char) tmp;
                tmp = PPM_in[EE_Parameter.Kanalbelegung[K_NICK]]; if(tmp > 128) tmp = 128; else if(tmp < -127) tmp = -127;
                                ToNaviCtrl.Param.Byte[3] = (char) tmp;
                                ToNaviCtrl.Param.Byte[4] = (unsigned char) Poti1;
                                ToNaviCtrl.Param.Byte[5] = (unsigned char) Poti2;
                                ToNaviCtrl.Param.Byte[6] = (unsigned char) Poti3;
                    ToNaviCtrl.Param.Byte[7] = (unsigned char) Poti4;
                    ToNaviCtrl.Param.Byte[8] = (unsigned char) SenderOkay;

            break;
         case SPI_CMD_CAL_COMPASS:
                if(WinkelOut.CalcState > 5)  
                  {
                    WinkelOut.CalcState = 0;    
                    ToNaviCtrl.Param.Byte[0] = 5;
                  }  
                                else ToNaviCtrl.Param.Byte[0] = WinkelOut.CalcState;
            break;
   }
 
  sei();
     
  if (SPI_RxDataValid)
  {
   if(abs(FromNaviCtrl.GPS_Nick) < 512 && abs(FromNaviCtrl.GPS_Roll) < 512 && (EE_Parameter.GlobalConfig & CFG_GPS_AKTIV))
   {
    GPS_Nick = FromNaviCtrl.GPS_Nick;
    GPS_Roll = FromNaviCtrl.GPS_Roll;
   }
    if(FromNaviCtrl.CompassValue <= 360)   KompassValue = FromNaviCtrl.CompassValue;
    KompassRichtung = ((540 + KompassValue - KompassStartwert) % 360) - 180;
 
    if(FromNaviCtrl.BeepTime > beeptime && !WinkelOut.CalcState) 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