Re: [avr-gcc-list] My first time with AVR (help)

[Karl Bongers]

On Sun, Jan 18, 2004 at 07:26:05PM +0100, Helix wrote:
> Herb
> Thank you for the answer.
> 
> >  > About the oscillator it is a 7.378Mhz
> >  > But I don't know how to test it, schould I connect the oscilloscope
> between
> >  > the Quartz pins or between GND and one of the Quartz pin ?
> >
> > Check the clock pins on the cpu.
> 
> Okay, I put the scope on pin 14, 15 of my 8515 (XTAL1 XTAL2)
> And I'm unable to see any clock
> My XTAL is a 7.378Mhz with two 22n capacitors connected to GND
> 

I see XTAL on 12,13 for a 40-pin 8535, I forget if these are
the same footprint.  Check your datasheet, make sure you have the
right pins for crystal, power, gnd.

The XTAL pins should show oscillation on scope, with reset in any
state.