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???
06/30/05 02:17
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#96264 - How r u making the Tx and Rx
Responding to: ???'s previous message
Hi,

how are you meking the communications ? Serial RS-232?

Are you using RS-232 Drivers?

i get the same problem with a gprs modem and a AT89C2051

i it was because of the rs-232 driver the one that i was using was the max232 this one is 5 to 12 volts and the one that the gprs modem has is a max32.. is a 3.3 volts driver, i can send text from the atmel to the modem but i can't receive.

may be that is happend

List of 5 messages in thread
TopicAuthorDate
AT89C51, should simulate hyperterminal ?            01/01/70 00:00      
   How r u making the Tx and Rx            01/01/70 00:00      
      I have no idea            01/01/70 00:00      
   Local Echo, Remote Echo.            01/01/70 00:00      
      Local, Remote echo. Solved the problem.            01/01/70 00:00      

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