| ??? 04/06/01 18:31 Read: times |
#10654 - RE: A Really Stupid Plea for Help |
Peter Dannegger wrote:
------------------------------- >>You must RESET !!!! >>============= I figured as much and, for reasons I can't explain as even I don't know, I was tying RST to ground figuring that was the "running" state. Applying the seemingly intuitive momentary Vcc to RST got rid of the strange LED behavior. >>A simple test program: Thanks. So I take the hex of the snippet, program the controller and still get the always on led. Getting really frustrated and poking around on pins with the logic tester I found I was getting nice pulses on P3.0 and .1. It then occured to me that I had the led on p1.7. Boy, what a stupid pin to watch with that test loop. OK - I was doubly an idiot but got all that squared away. Now I'm on pin p3.0 with the led. I cycle power, reset, and nothing again. Grrr.... Some more prodding and a discovery: If I touch XTAL2 witht he logic probe the output pin starts pulsing. It seems I have to "jump start" the oscillator to get it running. Any thoughts as to why this is happening? Wired as Atmel says to, using 47 pF though, not the 33 recommended. Next: Inputs... |
| Topic | Author | Date |
| A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
| RE: A Really Stupid Plea for Help | 01/01/70 00:00 | |
RE: A Really Stupid Plea for Help | 01/01/70 00:00 |



