dsPIC33EP512GM304 OSC PLL setting help me!!

[seokgi]

Hi.
I'm using a 16-bit processor for the first time in this project and I use dsPIC33EP512GM304. It's very different from 8 bits. I've compiled and downloaded it, but I have to use the UART, which is very difficult to set up OSC PLLs, etc. Can anyone help me?
Thank you.

[QMESAR]

Hi
Yea the dsPIC33 is great micro.

Well you have to give some info to help you
(1) what OSC are you using Internal /External if external what is the frequency of the Chrystal
(2) what Clock speed you would like to use

[QMESAR]

Hi
Here is the config for using and 8Mhz Chrystal and running at 70Mips(140 Mhz)

Code: Select all

/***************************************************
* Configure device for 70 Mips with 8 MHZ XTAL
**************************************************/
PLLFBD = 68;              /* M=70 (68 +2)*/
CLKDIVbits.PLLPOST = 0;   /* N1=2 */
CLKDIVbits.PLLPRE = 0;    /* N2=2 */
OSCTUN = 0;         //Tune FRC oscillator, if FRC is used

//Disable Watch Dog Timer
RCONbits.SWDTEN = 0;
//-------------------------------------------------------------------
// Clock switching to incorporate PLL
__builtin_write_OSCCONH(0x03);   // Initiate Clock Switch to Primary
__builtin_write_OSCCONL(0x01);
while (OSCCONbits.COSC != 0x3);

//--------------------------------------------------------------------
//ensure PLL lock before moving on into application code
//--------------------------------------------------------------------
while(OSCCONbits.LOCK != 1);	/* Wait for Pll to Lock */

use a C icon enter the c code and place the C icon before the main loop so that it is execute on start up only
here are the settings for Project option

P1.jpg (201.61 KiB) Viewed 2596 times

P2.jpg (50.67 KiB) Viewed 2596 times

[seokgi]

Thank you very much.
But I want to use internal clock, so let's study with advice. Thank you for your attention.

[QMESAR]

HI

Yes I understand now that you want to use internal OSC then you have to say so when you ask for help .
any case the principal of setting it up is the same

[seokgi]

Thank you QMESAR.
I will try it. and study it.