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???
01/12/09 17:20
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#161455 - not necessarily
Responding to: ???'s previous message
In Options->Advanced->Communications there is a Halfduplex tickbox, which is by default off.

However, the "direction" pin of the '485 transceiver on the mcu side has to be manipulated somehow - it would be relatively nonsense to resort to "auto-direction" there.

Nevertheless, I have already addressed these back then when I started with the 'V'RD2 - have a look at my website. I created that patch specifically as a response to Erik's rant on troubles with P89V51RD2 bootloader and '485, who AFAIK never tried it... ;-)

JW


List of 18 messages in thread
TopicAuthorDate
Own IAP boot loader for P89V51RB2            01/01/70 00:00      
   do you need ...            01/01/70 00:00      
      Yes, unfortunately.            01/01/70 00:00      
         many have made bootloaders that die not reside in a "boot fl            01/01/70 00:00      
            Me too            01/01/70 00:00      
               FlashMagic            01/01/70 00:00      
                  yes            01/01/70 00:00      
                     not necessarily            01/01/70 00:00      
                        that is correct, sorry            01/01/70 00:00      
                  Industrial device without Windows            01/01/70 00:00      
               and so what            01/01/70 00:00      
                  Proper Coding?            01/01/70 00:00      
                     you NEVER replace the bootloader            01/01/70 00:00      
                        Bit GBboot            01/01/70 00:00      
                           a standard bit variable            01/01/70 00:00      
                        Thank you, I have my solution            01/01/70 00:00      
   options            01/01/70 00:00      
      Options            01/01/70 00:00      

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