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???
11/30/07 12:58
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#147639 - the protoboard...
Responding to: ???'s previous message
Vaclav,

in this Forum, please, use only English, so that others can understand - and help. Your English is not so bad, besides, it serves as a good training, trying to express yourself and then understand the answers.

---

It seems the trouble lies in using a breadboard. Vaclav said, that programming was intermittent until he pushed a wire into an another "hole" in the breadboard... Also he says, his basic "blinkey" program does not work, LED sometimes randomly blinks shortly, but most of the time nothing happens. In a private mail, I recommended him 1. not to use the breadboard, use a soldering protoboard instead; 2. decouple properly; 3. use proper reset. I also recommended him better to use AVRs, for beginning, if he has friends who can help him in case of need.

JW


PS. basic troubleshooting guide, including "blinkey", here

List of 28 messages in thread
TopicAuthorDate
AT89S51 - input/output            01/01/70 00:00      
   which compiler/assembler?            01/01/70 00:00      
      Metalink links            01/01/70 00:00      
         Re: link            01/01/70 00:00      
      Metalink            01/01/70 00:00      
         Registers            01/01/70 00:00      
            I will            01/01/70 00:00      
            Yep            01/01/70 00:00      
            ... what a typo!            01/01/70 00:00      
               Yes - only Four Banks!            01/01/70 00:00      
   Atmel            01/01/70 00:00      
      Re: Atmel            01/01/70 00:00      
         Yes, I thought so            01/01/70 00:00      
         AVR            01/01/70 00:00      
      just for the record...            01/01/70 00:00      
         Typy            01/01/70 00:00      
   Don't forget to look at the "8052 FAQs"!            01/01/70 00:00      
      Instead of using SETB and CLR, to ...            01/01/70 00:00      
         Re:Blinking            01/01/70 00:00      
      I looked            01/01/70 00:00      
         Good luck!            01/01/70 00:00      
   Unlock pro. bits            01/01/70 00:00      
      you need to erase the chip...            01/01/70 00:00      
         re: erase            01/01/70 00:00      
            the protoboard...            01/01/70 00:00      
               AVR - start with what you know!            01/01/70 00:00      
                  He need not to leave us, if everything he...            01/01/70 00:00      
                     Re:Hasn't been scored            01/01/70 00:00      

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