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Yup, I read about the "special" versions in another post and suspected that myself. I also suspect that the CCS setup for this device is a little "off". The HSPWM functions mix set ...

Tried that already, made a little difference. Will experiment further.

On a side note, it looks like this CK series chip I selected is relatively bleeding edge. In looking at the PWM and HSPWM samp ...

Thanks, that does produce a nice sine wave at 1KHz. Only 200mV peak to peak though. Even less after some modest filtering. A little weak for my usual amplifier.

Still waiting for my external rail-t ...

...perhaps [img] is broken. Here are links to the scope pics:

http://jgscraft.com/graphics/ds33DACTest1.bmp

http://jgscraft.com/graphics/ds33DACTest2.bmp

Thank you T, for your continuing interest and help with this. Your next (favorite beverage/snack) is on me Smile

I compiled and tested your code and not getting expected results, looks like you were t ...

Yes, I've been around a while and am familiar with that first step.
The chip is running, LED is toggling, serial output message is displayed. I'm generating a Timer1 and CCP1 timer interrupts that to ...

So where does the signal go? My 33/24 CCP reference says it goes to "OCx Pin Output". I can't find any reference to that in the device sheet. I tried all the pins, no signal.

I'm working my way through the CCP modules, timer and interrupt is working great, now on to PWM. Found a lot of articles on using PWM as a DAC. I've worked out my maths and now am ready to try it. Her ...

Thanks. I'm digging into the data sheets, especially the family reference manual for 24/33 parts. I'm having trouble relating the CCS functions to what I want to do - lots of trial and error: code, lo ...

I tried the DAC setup setup you suggested but not a wiggle on DACOUT. Ordering external DAC.

If I understand correctly, what you are suggesting is set up a PWM and then adjust the duty periodically ...

Thank you, T. I'll give that a try.

I've tried the RC, and LC, filter approach but haven't had much luck at sub 1KHz frequencies, despite trying a lot of the sample circuits I've found. The range o ...

I'm trying to use sine tables and a DAC to generate some nice-sounding tones. I started out using 16LF1614 and got good results, but there were not any cycles left to do any other work.
I searched th ...

Oops, figured it out. Just needed to update the firmware on the ICD

This is my first foray into dsPIC33 devices. I'm trying to program a dsPIC33CK32MC102 with ICD-U80 and the programmer doesn't seem to recognize the device.

Since the device only comes in SMT format ...

Thanks, Samo, I will look at your code in the library. I don't have Proteus, but I would appreciate a picture of your circuit. I don't know if you can post it here but you can send direct to me at jur ...