HamShield/examples/DDS/DDS.ino

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Arduino
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#include <HamShield.h>
#include <Wire.h>
DDS dds;
void setup() {
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(11, OUTPUT);
dds.start();
dds.setFrequency(440);
dds.on();
delay(5000);
}
void loop() {
dds.setFrequency(2200);
delay(5000);
dds.setFrequency(1200);
delay(5000);
}
#ifdef DDS_USE_ONLY_TIMER2
ISR(TIMER2_OVF_vect) {
dds.clockTick();
}
#else // Use the ADC timer instead
ISR(ADC_vect) {
TIFR1 = _BV(ICF1); // Clear the timer flag
dds.clockTick();
}
#endif