Use of Handler in the Arduino code

hello all,

i wonder handler are, , how use them (precisely arduino due).
i mean these functions find in codes: adc_handler oder dacc_handler.
are specific interrupt service routines adc , dacc converters of microcontroller?

thanks in advance precious answer(s).

you provide handler routine , enable relevant interrupt.

for instance here's adc handler 1 of test sketches

code: [select]


void adc_handler (void)
{
  if (adc->adc_isr & adc_isr_eoc7)   // ensure there end-of-conversion , read isr reg
  {
    int val = *(adc->adc_cdr+7) ;    // conversion result
    samples [sptr] = val ;           // stick in circular buffer
    sptr = (sptr+1) & bufmask ;      // move pointer
  }
  isr_count ++ ;
}


and somewhere in code interrupt enabled:

code: [select]

  nvic_enableirq (adc_irqn) ;   // enable adc interrupt vector
  adc->adc_ier = 0x80 ;         // enable ad7 end-of-conv interrupt (arduino pin a0)


for other modules read relevant chapter of long-form datasheet...

Arduino Forum > Products > Arduino Due (Moderator: fabioc84) > Use of Handler in the Arduino code

arduino