void Flash1_TestWrite()

{
    uint32_t num_of_bytes, loop, dataCount;

    flashData.TXbuffer[0] = 0x02; // Write Flash Page1 address 0x0000
    flashData.TXbuffer[1] = 0x00;
    flashData.TXbuffer[2] = 0x00;
    flashData.TXbuffer[3] = 0x00;

    dataCount = 4;

    for(loop =0; loop < 20; loop ++)
    {
        flashData.TXbuffer[dataCount++] = 0xAA;
    }

    num_of_bytes = dataCount; //opcode + address + data

    Flash1_WREN(); / /Enable Write

    nFlashCS1Off();
    Flash1_Write_Buffer_Handle = DRV_SPI_BufferAddWrite(SPIHandle,(SPI_DATA_TYPE *) &flashData.TXbuffer[0], num_of_bytes, 0, 0);
   if (DRV_SPI_BUFFER_EVENT_COMPLETE & DRV_SPI_BufferStatus(Flash1_Write_Buffer_Handle))
   {
      nFlashCS1On();
   }
}



voidFlash1_Read( void )
{
    switch(flashData.state)
    {
        uint32_t num_of_bytes, loop, dataCount;

        case FLASH1_INIT:
        {
             nFlashCS1On();
             flashData.state = FLASH1_SEND_READ_CMD;
            break;
        }
        case FLASH1_SEND_READ_CMD:
        {
            flashData.TXbuffer[0] = 0x03; // Read Page
            flashData.TXbuffer[1] = 0x00;
            flashData.TXbuffer[2] = 0x00; // Address - MSB
            flashData.TXbuffer[3] = 0x00; // Address - LSB

            dataCount = 4;

            for(loop =0; loop < 20; loop ++)
            {
                flashData.TXbuffer[dataCount++] = 0xFF; // dummy bytes
            }

            num_of_bytes = dataCount;
            nFlashCS1Off();

            Flash1_Write_Buffer_Handle = DRV_SPI_BufferAddWrite(SPIHandle, (SPI_DATA_TYPE *) &flashData.TXbuffer[0], num_of_bytes, 0, 0);

            flashData.state = FLASH1_WAIT_FOR_REPLY;
            break;
        }

        case FLASH1_WAIT_FOR_REPLY:
        {
            if(DRV_SPI_BUFFER_EVENT_COMPLETE &
                               DRV_SPI_BufferStatus(Flash1_Write_Buffer_Handle))
            flashData.state = FLASH1_GET_DATA;
            break;
        }

      case FLASH1_GET_DATA:
        {
            Flash1_Read_Buffer_Handle = DRV_SPI_BufferAddRead( SPIHandle, (SPI_DATA_TYPE *) &flashData.RXbuffer[0], 24, 0, 0);
           flashData.state = FLASH1_WAIT_FOR_DATA;
           break;
        }

      case FLASH1_WAIT_FOR_DATA:
        {
            if(DRV_SPI_BUFFER_EVENT_COMPLETE &
                               DRV_SPI_BufferStatus (Flash1_Read_Buffer_Handle))
            {
                nFlashCS1On(); // Assert CS line
                flashData.state = FLASH1_READ_COMPLETE;
            }
           break;
        }

      case FLASH1_READ_COMPLETE:
      {
        break;
      }

      default:
        break;
    }
    return false;
}

for(loop =0; loop < 20; loop ++) { flashData.TXbuffer[dataCount++] = 0xFF; // dummy bytes }

Flash1_Write_Buffer_Handle = DRV_SPI_BufferAddWrite(SPIHandle, (SPI_DATA_TYPE *) &flashData.TXbuffer[0], num_of_bytes, 0, 0);