Exemple #1
0
void SPIAslave_writeSpi(SPIAslave_Handle handle, const uint16_t data)
{
  SPIAslave_Obj *obj = (SPIAslave_Obj *)handle;

  // reset the Rx fifo pointer to zero
  SPI_resetRxFifo(obj->spiHandle);
  SPI_enableRxFifo(obj->spiHandle);

  // write the command (time N)
  SPI_write(obj->spiHandle,data);


  return;
}
Exemple #2
0
void DRV8301_writeSpi(DRV8301_Handle handle, const DRV8301_RegName_e regName,const uint16_t data)
{
  DRV8301_Obj *obj = (DRV8301_Obj *)handle;
  uint16_t ctrlWord;


  // build the command
  ctrlWord = (uint16_t)DRV8301_buildCtrlWord(DRV8301_CtrlMode_Write,regName,data);

  // reset the Rx fifo pointer to zero
  SPI_resetRxFifo(obj->spiHandle);
  SPI_enableRxFifo(obj->spiHandle);

  // write the command (time N)
  SPI_write(obj->spiHandle,ctrlWord);


  return;
}  // end of DRV8301_writeSpi() function
Exemple #3
0
uint16_t DRV8301_readSpi(DRV8301_Handle handle,const DRV8301_RegName_e regName)
{
  DRV8301_Obj *obj = (DRV8301_Obj *)handle;
  uint16_t ctrlWord;
  const uint16_t data = 0;
  volatile uint16_t readWord;
  static volatile uint16_t WaitTimeOut = 0;
  volatile SPI_FifoStatus_e RxFifoCnt = SPI_FifoStatus_Empty;


  // build the control word
  ctrlWord = (uint16_t)DRV8301_buildCtrlWord(DRV8301_CtrlMode_Read,regName,data);

  // reset the Rx fifo pointer to zero
  SPI_resetRxFifo(obj->spiHandle);
  SPI_enableRxFifo(obj->spiHandle);


  // write the command
  SPI_write(obj->spiHandle,ctrlWord);
  // dummy write to return the reply from the 8301
  SPI_write(obj->spiHandle,0x0000);

  // wait for two words to populate the RX fifo, or a wait timeout will occur
  while((RxFifoCnt < SPI_FifoStatus_2_Words) && (WaitTimeOut < 0xffff))
  {
    RxFifoCnt = SPI_getRxFifoStatus(obj->spiHandle);

      if(++WaitTimeOut > 0xfffe)
      {
          obj->RxTimeOut = true;
      }
  }

  // Read two words, the dummy word and the data
  readWord = SPI_readEmu(obj->spiHandle);
  readWord = SPI_readEmu(obj->spiHandle);

  return(readWord & DRV8301_DATA_MASK);
}  // end of DRV8301_readSpi() function
Exemple #4
0
uint16_t SPIAslave_readSpi(SPIAslave_Handle handle)
{
  SPIAslave_Obj *obj = (SPIAslave_Obj *)handle;
  uint16_t ctrlWord;
  const uint16_t data = 0;
  volatile uint16_t readWord;
  static volatile uint16_t WaitTimeOut = 0;
  volatile SPI_FifoStatus_e RxFifoCnt = SPI_FifoStatus_Empty;


  // reset the Rx fifo pointer to zero
  SPI_resetRxFifo(obj->spiHandle);
  SPI_enableRxFifo(obj->spiHandle);

/*NEED TO CHANGE IT FROM WRITING FIRST TO WAITING FOR THE MASTER TO COMMAND IT*/
  // write the command
  SPI_write(obj->spiHandle,ctrlWord);
  // dummy write to return the reply from the 8301
  SPI_write(obj->spiHandle,0x0000);

  // wait for two words to populate the RX fifo, or a wait timeout will occur
  while((RxFifoCnt < SPI_FifoStatus_2_Words) && (WaitTimeOut < 0xffff))
  {
    RxFifoCnt = SPI_getRxFifoStatus(obj->spiHandle);

      if(++WaitTimeOut > 0xfffe)
      {
          obj->RxTimeOut = true;
      }
  }
  /*NEED TO CHANGE IT FROM WRITING FIRST TO WAITING FOR THE MASTER TO COMMAND IT*/

  // Read two words, the dummy word and the data
  readWord = SPI_readEmu(obj->spiHandle); //not necessarily sure we need this
  readWord = SPI_readEmu(obj->spiHandle);

  return(readWord);
}