rs2323与PC断开连接收到错误消息

''我尝试过使用0）884。''
 
 
 你的意思是'''UM0884用户手册RS232与HyperTerminal通信使用STM8S-DISCOVERY''？
http://www.st.com/stonline/products/literature/um/16898.pdf
 
 
 
 究竟是什么意思“尝试过”？
 
 你是否仔细遵循了所有指示？
 你确定你的RS2332电平转换器电路工作正常吗？
 
 
''如果我将rs2323与PC断开连接，我会收到错误。''
 
 你得到什么错误？
 你在哪里得到的？
 
''我连接它运行的rs232电缆''
 
 什么运行？
 
''它会通过例程来显示菜单。它停在那个断点上。我在getkey例程之后放了一个断点，它永远不会得到密钥。''
 
 你从中得出什么结论？
 
 您是否有示波器来检查线路上是否有任何活动？
 
 如果将PC的Tx环回到其Rx，它是否有效？
 
 
“我在UM0884中找到了一些小配件。”
 
 比如什么？
 
“有没有我不知道的伎俩或错误？”
 
 调试任何事情的诀窍是在每个阶段逐步进行检查。
 如果某些东西不起作用，问问自己可能导致什么。
 什么也不做 - 检查＆amp;验证一切。
 
 有关调试技​​巧，请访问：http：//www.8052.com/faqs/120313
 （具体到8052！）



以下为原文






''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
( specific to 8052!)

''任何人都有任何糖''''
 
 
 这样的东西对于RS232测试和调试是非常宝贵的：
 
 
 
http://www.datalinkcom.net/accessories/9PMTT.html
 
 
http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=6246347
 
http://www.bb-europe.com/product.asp?sku=9PMTT&TrailType=Sub&Trail=61



以下为原文





''anyone have any suggastions''


Something like this is invaluable for RS232 testing and debugging:



http://www.datalinkcom.net/accessories/9PMTT.html


http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=6246347

http://www.bb-europe.com/product.asp?sku=9PMTT&TrailType=Sub&Trail=61

以下为原文

论坛是否吞下了你的帖子呢？



以下为原文





Did the forum swallow your post then?