IDE V1.5.3

Hardware Arduino Due
2

Hello giubio51,
I just did run the following code in IDE 1.5.3 and ran OK. No errors.

#include <Wire.h>
#include <SPI.h>

void startTimer(Tc *tc, unsigned long int channel, IRQn_Type irq, unsigned long int frequency)
{
  pmc_set_writeprotect(false);
  pmc_enable_periph_clk((uint32_t)irq);
  TC_Configure(tc, channel, TC_CMR_WAVE | TC_CMR_WAVSEL_UP_RC | TC_CMR_TCCLKS_TIMER_CLOCK1);
  uint32_t rc = VARIANT_MCK/2/frequency;
  TC_SetRA(tc, channel, rc/2);
  TC_SetRC(tc, channel, rc);
  TC_Start(tc, channel);
  tc->TC_CHANNEL[channel].TC_IER=TC_IER_CPCS;
  tc->TC_CHANNEL[channel].TC_IDR=~TC_IER_CPCS;
  NVIC_EnableIRQ(irq);
}

void setup(){
}

void loop(){
}

Regards!