main.cpp

// --- AVR128DB64 ---

#include <avr/io.h>

#include <avr/interrupt.h>

#include <util/atomic.h>

void initPins (void);

void initTCA0 (void);

void deleteTCA0 (void);

int main (void)

{

  deleteTCA0();

  initPins();

  initTCA0();

  while(1)

  {   }

}

void initPins (void)

{  

  PORTMUX.TCAROUTEA = PORTMUX_TCA0_PORTB_gc;  // TCA0 WO-x umrouten

  VPORTB.DIR = VPORTB.DIR | _BV(0);           // PB0 / TCA0-WO Output 

}

void initTCA0 (void)

{

  const uint16_t value = 65535;

  TCA0.SINGLE.CMP0BUF = value;                                            // TOP

  TCA0.SINGLE.CTRLA = TCA_SINGLE_CLKSEL_DIV1_gc;                          // CLK_PER divider

  TCA0.SINGLE.CTRLB = TCA_SINGLE_WGMODE_FRQ_gc | TCA_SINGLE_CMP0EN_bm;    // Frequency Generation Mode

  TCA0.SINGLE.CTRLA = TCA0.SINGLE.CTRLA | TCA_SINGLE_ENABLE_bm;           // Enable TCA

}

void deleteTCA0 (void)

{

  TCA0.SINGLE.CTRLA = 0;

  TCA0.SINGLE.CTRLB = 0;

  TCA0.SINGLE.CTRLC = 0;

  TCA0.SINGLE.CTRLD = 0;

  TCA0.SINGLE.INTCTRL = 0;

  TCA0.SINGLE.CNT = 0;

}