In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mrdieseldude wrote:

Thanks Robert,

 

Also thanks to Shmoopy and PJ for the really great advise. You guys all provided the "where to look". It is just tuff looking at problem that you created yourself and actually "seeing" it. You know what they say, "you need another set of eyes"... to proof your work.

 

At the risk of being labeled an idiot, I want to tell you what the problem turned out to be, as I feel I owe this to you guys and the community.

 

While I drew the schematic correctly, I inadvertanly pulled the MCLR pin up to supply voltage instead of Vdd. I guess the SX can handle up to about 9V on this pin before it quits working. No damage done to the chip though, and I'm sure I applied at least 14V to this pin. 

 

 

One last problem if you have any input: The debug screen does not work properly. It displays, but the area where you can "step", "walk", "run" is always greyed out. However, when I developed this on the SX Tech board, the debug screen works perfect... it is only on the in system version that I have a problem. I am pretty certain that all of the voltages are correct this time.

 

Thanks

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=435144#m435646

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2010 (http://www.dotNetBB.com)