Posted on October 26, 2010 at 10:01''I have tried using0UM)884.''
You mean, ''UM0884 User manual RS232 communications with HyperTerminal using the STM8S-DISCOVERY'' ?
http://www.st.com/stonline/products/literature/um/16898.pdf
What, exactly, do you mean by
''tried''?
Have you carefully followed all the instructions?
Are you sure that your RS2332 level converter circuit is working?
''If I have the rs2323 disconnected from the PC i get an error.''
What error do you get?
Where do you get it?
''I connect the rs232 cable it runs'' What runs?
''it does go through the routine to display the menu. It stops on that break point. I put a breakpoint after the getkey routine and it never getkey.'' What do you conclude from this?
Do you have an oscilloscope to check if there is any activity on the lines?
If you loop-back the PC's Tx to its Rx, does it work?
''I have found some minomers in UM0884.''
Such as what??
''Is there a trick or some error that I am unaware of?''
The trick to debugging anything is to proceed logically in a step-by-step process checking at each stage.
If something isn't working, ask yourself what could cause that.
Assume nothing - check & verify everything.
For debugging tips, see:
http://www.8052.com/faqs/120313
(
not specific to 8052!)
