give an address to pic on rs-485 network

[HenrikOlsson]

Hi,
Lets say you have the four switches connected to PortB.0 thru PortB.3 and that they pull their respecitve pin high when 'on'. Then all you need to is

Adress VAR BYTE
TRISB = %00001111    ' lower four bits as inputs, rest as outputs
Adress = PortB & 15

At this point the variable Adress will contain the the "value" of the dip switches as coded "in binary" and allows for a total of 16 adresses, 0-15.

In your example, the first line would be adress 1 but the second would be adress 3 when using the above code.

/Henrik.

[EarlyBird2]

Normally rotary BCD selector switches are used.



This save the user having to work out which dip switches to set to get the required binary value.