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

Yes, you are right on. After looking at the code for awhile, that is what I finally noticed. So, in the master, after the loop I put in a temp1=255, and now it works as expected. So, that tells me that the transmit loop has to be in a loop for a certain amount of cycles in order for the slave to get the message.
 

The other thing that I noticed is on the slave board when I remove the power and the SX-Key, and then turn on the master, the power LED on the slave board goes on. I did not think that the pins put out that much power so it would turn on the board power LED on the the slave board.

 

I am still trying to figure out whats with the common ground thing. My guess would be that since you have a common ground between the boards, you also have a common Vdd between the boards when the Tx/Rx pins are connected. But, what does that have to do with anything.

 

Now I can see that I will have to create a UART VP to put into an interrupt within the SX/B program. That way I could have a task, Tx/Rx, running in the background, while I come up with commands that I would use to turn on one LED and then the other, under certain conditions.

 

Thanks

 

Ray

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


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=103038#m103336

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)