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Einly
Joined: 10 Sep 2003 Posts: 60
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Help on RS485 |
Posted: Fri Aug 20, 2004 2:29 am |
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Hi,
Does anyone have rs485.c? Any idea how to start with RS485 communication from pc to pic? Any example code?
Thanks _________________ Einly |
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Ttelmah Guest
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Re: Help on RS485 |
Posted: Fri Aug 20, 2004 4:49 am |
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Einly wrote: | Hi,
Does anyone have rs485.c? Any idea how to start with RS485 communication from pc to pic? Any example code?
Thanks |
RS485, is just a different 'electrical/wiring' form, for a normal serial interface. All the RS232 code covers this. The second 'layer' to it, is the protocol, _which is not part of the RS485 definitions_. This instead is covered by the use of names like 'profibus' etc.. There are dozens of different protocol standards, using RS485 signalling. Only the protocol is handled by the processor. You need to know which protocol you are going to use over the RS485 link...
Best Wishes |
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treitmey
Joined: 23 Jan 2004 Posts: 1094 Location: Appleton,WI USA
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Posted: Fri Aug 20, 2004 8:25 am |
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