changing frequency

[michaelproino]

Hi,
Although I try to change frequency with; (changing frequency=20 Hz and keep it constant)

static float frequency = 20.0;
unsigned long freqReg = gen.freqCalc(frequency);
gen.adjustFreq(MiniGen::FREQ0, freqReg);
delay(100);

My Minigen's output still 150kHz,
Why?

[mhord]

Try adding this line before your gen.adjustFreq() line:

gen.FreqAdjustMode(MiniGen::FULL);

There are several settings for the range of the multiplier, and freqCalc() works for the FULL range.

Sorry for the confusion!

[michaelproino]

Now, my all code is;

#include <SPI.h>
#include <SparkFun_MiniGen.h>

MiniGen gen;

void setup()
{
gen.reset();
delay(2000);

gen.setMode(MiniGen::SQUARE);
delay(3000);

gen.setMode(MiniGen::SQUARE_2);
delay(3000);

gen.setMode(MiniGen::TRIANGLE);
delay(3000);

gen.setMode(MiniGen::SINE);

}

void loop()
{

static float frequency = 200.0;
gen.setFreqAdjustMode(MiniGen::FULL);
unsigned long freqReg = gen.freqCalc(frequency);

gen.adjustFreq(MiniGen::FREQ0, freqReg);
delay(100);
frequency += 200.0;
}

What I mean is getting 20 Hz frequency and increasing it step by step (for example : 10 Hz for every loop)

[mhord]

Change the "frequency" value to 20 and the frequency+=200.0 line to frequency += 10.