Sinewaves using interrupts.

[HankMcSpank]

Hi Mark,

Agreed about the 12lf1822's 6 Inputs & 5 outputs being insufficient for a resistor ladder ...I therefore have three options...

1. Use HPWM
2. Use the 12lf1822's internal 5 bit DAC (which while woeful, is handy from a low parts count & convenience/learning perspective)
3. Go with a larger 14 pin sibling (eg 16lf1824) & use a reistor ladder.

As much as I'd really like to just use the dedicated DDS chips, but they're way overkill for my modest needs, too expensive & also I'd like to lean how to roll my own so to speak.

Just sounding the ground again here.