tkvenki

Hi All,

I'm facing a very strange problem in due course of my development.

My application is called Modbus.

When i download my Modbus code to my controller, the code gets downloaded.
Automatically it gets reset, and starts working perfectly, without any problems.

But if i reset it now. Then after a few statements after reset the controller seems to hang. Now comes the interesting part. Now even if i download my Modbus code, the controller hangs after executing a few statements after reset.

But if i download some other code ( ANY CODE) and then download the Modbus code it works. But after a reset the controller behaves in a similar way given above.

See the flowchart of the problem attached. I intend to provide a clear picture of my problem through this flowchart.

I'm stuck up at this strange problem.
Friends...any suggestions??

Attached Images

problem_flow.JPG (21.6 KB, 9 views)

Pommie

Your description suggest that something is not initialised correctly. To try and identify the problem you could try,
Initialise all ram to a fixed value.
Call all initialise routines twice to see if they hang the second time.
Try to identify where the code stops and work back from there.

Mike.