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???
01/31/05 23:50
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#86254 - disconnect the MAX232
Responding to: ???'s previous message
Dennis Welbourn said:
Jan brings up a good point, if the module is requiring the UART interface, you'll have to disconnect the MAX232 or it won't work.

You wouldn't need to disconnect the Tx output from the 8031 to the MAX232 - the 8031 output should be able to drive both the RF module & the MAX232.

But you would need to disconnect the MAX232 from the 8031 Rx input - otherwise you'd have both the MAX232 output and the RF Module output "fighting" each other...




List of 32 messages in thread
TopicAuthorDate
P1 serial data            01/01/70 00:00      
   Why not use the UART?            01/01/70 00:00      
      Pin 10 and 11            01/01/70 00:00      
         back to basics            01/01/70 00:00      
            OK            01/01/70 00:00      
               will cost you anyhow            01/01/70 00:00      
                  Already Have            01/01/70 00:00      
   What kind od serial data            01/01/70 00:00      
      Type of data            01/01/70 00:00      
         RTFM            01/01/70 00:00      
         Wrong end of stick!            01/01/70 00:00      
            Serial            01/01/70 00:00      
               still unspecific            01/01/70 00:00      
                  ROM            01/01/70 00:00      
                     a ROM can not map anything            01/01/70 00:00      
               End of wrong stick!            01/01/70 00:00      
                  Mystery?            01/01/70 00:00      
                     its still a mystery            01/01/70 00:00      
                        Module            01/01/70 00:00      
                           not yet            01/01/70 00:00      
                           UART is not a good choice            01/01/70 00:00      
                              Manchester            01/01/70 00:00      
                                 You didn't get it, but that's OK            01/01/70 00:00      
                     The Stick!            01/01/70 00:00      
                        OK            01/01/70 00:00      
               Yes            01/01/70 00:00      
                  Thanks            01/01/70 00:00      
                  Extra UART needed?            01/01/70 00:00      
                  Wires? Grounding??            01/01/70 00:00      
                     uC to RF module interface wires            01/01/70 00:00      
                        disconnect the MAX232            01/01/70 00:00      
                        It looks like a straight tranceiver            01/01/70 00:00      

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