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

Dave,

the picture you have added to your first post shows the debugger displaying the "Sleep" state. The other two possible states are "Running", and "Idle".

When the debugger is active, the communication between the SX-Key and the SX under test is performed via the OSC2 pin in a "tricky" manner. The SX under test generates a special hi-low pattern on the OSC2 pin, and the timing of that pattern tells the SX-Key which of the thee modes is active on the SX under test. When there is no signal on the OSC2 pin at all, this means the SX is sleeping. So, when the IDE displays "Sleeping" it does not "see" any transition on the OSC2 pin. The reasons for that could be: 1. The SX is really in sleep mode (I don't think this is true in your case), 2. The SX does not get a clock signal from the SX-Key, and 3. The OSC2 input on the SX-Key is defective.

If you have an O-scope on hand, you might check if there is a 4 MHz clock signal on the OSC1 pin. Should there be no clock singnal, it is most likely that the SX-Key is broken. When there is a clock signal, the OSC2 input on the SX-Key is possibly damaged. So, you better contact Parallax support for further assistance.

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


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=252891#m253449

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

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)