In SX Microcontrollers, SX/B Compiler and SX-Key Tool, transmon wrote:

This is What I think it should look like , is it ok to have all them on the RB I/O pins all of the demo's show them on the RC I/O pins I dont use the RC4 pin but I do need it for an output , how do I make it avalible , it is being used buy the SX28just like in the demo. I dont have enough I/O pins, have thought about using a philips LPC2103 that uses Ic2 which uses 2 pins insted of three like the ds1302 and it does the days of the year julin within the chip. How hard is it to talk to these devices over the Ic2 bus? do you know of any examples? Thanks David
 

Keys            VAR     RB                      ' keyboard scan port
TRIS_Keys       VAR     TRIS_B
PLP_Keys        VAR     PLP_B

Col1            VAR     Keys.7                  ' column inputs
Col2            VAR     Keys.6
Col3            VAR     Keys.5
Col4            VAR     Keys.4

 

tmpB1 = 0                                     ' reset keyboard value
  Keys = %0000_0111                       ' activate first row
  TRIS_Keys = %1111_0000                ' refresh IO state
  PLP_Keys = %0000_1111                  ' pull-up input pins

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