Ok I am sending an on/off signal from a 16f876  Port C.2 to a 16f877 Port
B.2 and my master program does not see it. The slave pic boards have been
tested and work. Here is program I am using in MASTER Pic. What is to happen
is Master signals Slave to run and Slave then signals Master when its done.
Then Master goes to next section of code to run next Slave but not before
last slave signals done.

This program will cycle through everypart turning everything on and off but
never waits for slave pics to signal its done. It just continues and runs
all six sections. So for some reason it looks like the Master is not seeing
the slave saying when its done. Where did I go wrong?
Could something in my Epic programmer be set wrong? My wiring is like so.

16f877(Master)  <------------------------[ 220 ohm ]----< 16f876(Slave)

resistor is for zap protection
line is only 14inches long.
Here is program:


====================================================
====================================================

@ DEVICE  pic16F877, hs_osc, wdt_off, pwrt_off, bod_off,
lvp_off,cpd_off,wrt_off, protect_off

DEFINE OSC 20       '20 MHz crystal

' - - - -SETUP PORTA for OUTPUT- - - - - - -
ADCON1 = 7          ' Set PORTA and PORTE to digital
TRISA = %00000000   ' set PortA for all output
PortA = %00000000   ' turn all lines on PortA OFF

' - - - -SETUP PORTB for INPUT- - - -
TRISB = %01111111 ' sparein, trig, emer on PORTB to input
Main_done            var PORTB.0    ' Main Air Supply done line
Clamp_done         var PORTB.1    ' Clamp done line
Index_done           var PORTB.2    ' Index done line
Tilt_done               var PORTB.3    ' Tilt done line
TV1_done             var PORTB.4    ' Transverse1 done line
TV2_done             var PORTB.5    ' Transverse2 done line
Counter_done      var PORTB.6    ' Counter done line
'                   var PORTB.7    ' not used

' - - - -SETUP PORTC for OUTPUT- - - -
TRISC = %00000000     ' set PortC for all output
PortC = %00000000       ' turn off all portC
Main                  var PORTC.0    ' Main Air Supply Valve
Clamp               var PORTC.1    ' Clamp Valve
Index                 var PORTC.2    ' Index Valve
Tilt                     var PORTC.3    ' Tilt Valve
TV1                   var PORTC.4    ' Transverse1 Valve
TV2                   var PORTC.5    ' Transverse2 Valve
Counter             var PORTC.6    ' Subract from Mechanical Counter
'                          var PORTC.7    ' not used

' - - - -SETUP PORTD for OUTPUT - - - -
 TRISD = %11110000     ' set PortD for 4 output & 4 input
PortD = %00000000       ' turn off all portD

' - - - -SETUP PORTE for OUTPUT- - - -
TRISE = %00000111     ' set PortE for all input
PortE = %00000000       ' turn off all portE

'--------------------------------------------------------
' = = = = = = = = = =
' = TEST Program  =
' = = = = = = = = = =
test:     Main = 1                               'Master signals Slave to
turn ON
            While Main_done = 0          'Wait till Slave signals that its
done
            Wend

            Clamp = 1                               'Master signals Slave to
turn ON
            While Clamp_done = 0          'Wait till Slave signals that its
done
            Wend

            Index = 1                               'Master signals Slave to
turn ON
            While Index_done = 0          'Wait till Slave signals that its
done
            Wend

            Main = 0                               'Master signals Slave to
turn OFF
            While Main_done = 0          'Wait till Slave signals that its
done
            Wend

            Clamp = 0                               'Master signals Slave to
turn OFF
            While Clamp_done = 0          'Wait till Slave signals that its
done
            Wend

            Index = 0                               'Master signals Slave to
turn OFF
            While Index_done = 0          'Wait till Slave signals that its
done
            Wend

goto test

 = = = = = = = = = = = = = = = = = = = = = = = = =
 = = = = = = = = = = = = = = = = = = = = = = = = =
 = = = = = = = = = = = = = = = = = = = = = = = = =


Thanks Wrong Way Ray (Ray Choat)
rc@kenai.net

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