In SX Microcontrollers, SX/B Compiler and SX-Key Tool, tdg8934 wrote:

Metron I appreciate your help with this.
 

With no program running on either the BS2 or SX-28, I get send HIGH statements to send out +5v so this is not an issue. 

 

The issue is when running my program on the SX-28, it gives my CS pin 2.2v and my WR pin 3v with no load on the pins. 

 

On my BS2 runing an almost identical program it gives 5v on both CS and WR as it should and it does run correctly. 

 

Are you running my SX-28 program? If so you can see what I mean. The same goes for my BS2 program. 

 

I tried what you said but it only brought CS down to 0v. 

 

However, I put in a PAUSE 50 (had to be higher than PAUSE 10 to get a good voltage over 4.9v on CS) after the HIGH CS1_8255 and before the RETURN statements and got rid of all of the other PAUSE statements that was in trial and error.

 

Now I get the same voltages out (~4.9v on WR and CS) as the BS2 gets ( and ~0v on the others) but still does NOT work on the SX28. 

 

I also tried swapping the 8255's and the problem is only on the SX28 circuit no mater what 8255 is used. The BS2 program always works but the SX28 never does even now with the same control voltages coming out of the SX28 to the 8255.

 

HELP!!

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


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=150716#m150932

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

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)