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???
02/12/05 20:41
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Msg Score: +1
 +1 Good Answer/Helpful
#87232 - Something fundamental is wrong!
Responding to: ???'s previous message

There's got to be something fundamentally wrong with your setup.

1/ Check the crystal frequency - if that's wrong not use going any further until that is fixed. If necessary, build a frequency counter using the 8051 to check this frequency.

2/ Double check your code to read the device. Re-read the datasheet. This is most likely your source of problem.

3/ Are you sure you're not mis-interpreting the data? It may be BCD and if you're interpreting it differently - this will give you weird results.

It's very hard to remotely debug these problems.







List of 14 messages in thread
TopicAuthorDate
DS1307 Time Error ?            01/01/70 00:00      
   Check the circuit layout            01/01/70 00:00      
      Reading            01/01/70 00:00      
      Crystal Frequency            01/01/70 00:00      
   Error            01/01/70 00:00      
      re:error            01/01/70 00:00      
         Calibration            01/01/70 00:00      
            My Broblem Did'nt Solve yet!            01/01/70 00:00      
   It is another way!            01/01/70 00:00      
      Oh yes you can!            01/01/70 00:00      
         Of course you can!            01/01/70 00:00      
            Of course it does!            01/01/70 00:00      
         Of course you can!            01/01/70 00:00      
      Something fundamental is wrong!            01/01/70 00:00      

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