Beispiel #1
0
int main(void)
{
  /* Chip errata */
  CHIP_Init();
  
  /* Enable HFXO */
  CMU_ClockSelectSet(cmuClock_HF, cmuSelect_HFXO);
    
  /* Enable deboug output over UART */
  RETARGET_SerialInit();                     
  RETARGET_SerialCrLf(1); 
  
  /* Enable the segment LCD */
  SegmentLCD_Init(false);
  SegmentLCD_Write("USB");
  
  printf("\nStarting USB Device...\n");
  
  /* Set up GPIO interrupts */
  gpioInit();
  
  /* Start USB stack. Callback routines in callbacks.c will be called
   * when connected to a host.  */
  USBD_Init(&initstruct);;

  /*
   * When using a debugger it is pratical to uncomment the following three
   * lines to force host to re-enumerate the device.
   */
  /* USBD_Disconnect(); */
  /* USBTIMER_DelayMs( 1000 ); */
  /* USBD_Connect(); */
    
  while(1)
  {
    if ( USBD_SafeToEnterEM2() )
    {
      /* Enter EM2 when in suspend or disconnected */
      EMU_EnterEM2(true);
    } 
    else
    {
      /* When USB is active we can sleep in EM1. */
      EMU_EnterEM1();
    }
  } 
}
Beispiel #2
0
/**************************************************************************//**
 * @brief main - the entrypoint after reset.
 *****************************************************************************/
int main( void )
{
#if !defined(BUSPOWERED)
  BSP_Init(BSP_INIT_DEFAULT);   /* Initialize DK board register access */

  /* If first word of user data page is non-zero, enable eA Profiler trace */
  BSP_TraceProfilerSetup();
#endif

  CMU_ClockSelectSet( cmuClock_HF, cmuSelect_HFXO );
  CMU_OscillatorEnable(cmuOsc_LFXO, true, false);

#if !defined(BUSPOWERED)
  RETARGET_SerialInit();        /* Initialize DK UART port */
  RETARGET_SerialCrLf( 1 );     /* Map LF to CRLF          */
  printf( "\nEFM32 Mass Storage Device example\n" );
#endif

  if ( !MSDDMEDIA_Init() )
  {
#if !defined(BUSPOWERED)
    printf( "\nMedia error !\n" );
#endif
    EFM_ASSERT( false );
    for( ;; ){}
  }

  MSDD_Init(gpioPortE, 1);

  for (;;)
  {
    if ( MSDD_Handler() )
    {
      /* There is no pending activity in the MSDD handler.  */
      /* Enter sleep mode to conserve energy.               */

      if ( USBD_SafeToEnterEM2() )
        EMU_EnterEM2(true);
      else
        EMU_EnterEM1();
    }
  }
}