Search found 36 matches

Hello,

I'm currently using dsPIC33FJ06GS202 and the only that it's doing in the while loop is output a signal to it's internal DAC @ 20MHz with an external xtal oscillator.

In order to save powe ...

thanks

ckielstra, thank you for the reply,
it was extremely helpful.

I'm working with dsPIC33FJ06GS202 @ 40 MIPS.
I'm producing a signal which has 8 different frequencies around 17kHz, the sampling rate ...

Hi,
I have an int8 array with N elements.
Inside the main loop, I have some operations which need to complete every 25uSec.
The pseudo-code is as follows:

Bytes={255,10,128,4}
cur ...

Issue solved:

needed to set MCLR to Vdd...

thanks for the answer Ttelmah,

I've tried the following and still no luck.
Am I configuring the device wrong?

#include <33FJ06GS202.h>
#fuses FRC
#use delay(clock=7.37M)

vo ...

hi,
I've recently purchased a dspic33FJ06GS202.
http://ww1.microchip.com/downloads/en/DeviceDoc/70318F.pdf
I've written the following code just as sanity check, but for some reason it just doesn't ...

thanks Ttelmah

Hi,

I need to generate a good signal which is composed of several specific frequencies. After a lot of time and hard work with PIC16F, I've decided that I can't evade upgrading to a dsPIC (with a D ...

problem solved
thanks asmallri

hi,

For timing accuracy, I wish to use TIMER2 interrupt flag in the main loop.
such that each time the interrupt is set, the mc performs some opertations, for instance print some value in this cas ...

sub frequency artifacts is the word I was looking for... that's why I put harmonics in quotes.

Thanks, again for the info, I knew it took some time switching to the ISR, I didn't think it was THAT ...

Hi,

I'm trying to produce an 18kHz pure sine wave using an LUT and the PIC's DAC.

I first create an array which holds the the required LUT values, and then I setup timer2 to interrupt every 50cc ...

Thank you very much for all the info guys.
I've changed the code so that the array is created in advance and the only thing done in the ISR is the DACCON1=NormVal; operation.
But still no luck. ...

ckielstra, thanks for the general advice, I made the changes you've offered. andyfraser, when I change the line "write_dac(normVal)" to "printf(normVal)" and then analyze the value ...