Hello folks,
I purchased Arduino Due and successfully performed an experiment on Simple waveform Generator.
Please refer follwing link:
Now my question is I am using timer interrupt with constant sampling rate of 44100hz and I want to modify the frequency by changing the index of wave form table. I am bit confused what should I write in Interrupt handler. It is just 2-3 line of code but it is really frustating me.
Thanks in advance.
void TC4_Handler() //Interrupt at 44.1KHz rate (every 22.6us)
{
TC_GetStatus(TC1, 1); //Clear status to fire again the interrupt.
analogWrite(DAC0, waveformsTable[wave0][i]); // write the selected waveform on DAC0
i++; // modify the indexing to get different frequency
if (i == maxSamplesNum) // Reset the counter to repeat the wave
i = 0;
}