Sure Electronics Dot Matrix Display

Any one had any luck getting the Sure electronic display to work?

I've got the 6432 display (really two 6416, one above the other. I can get LEDs to light up - but not the ones I think shoul be activated.

The board works Ok - it comes with a C program that does it's stuff - I'm not familiar enough with C to go through the statement and 'work backwards.'

My code, that does not work is:

Code:

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' File...... 8722 Sure Disp 01
' Purpose... Get Sure electronics dot matrix display working
' Date...... March 2010

clear
define OSC 40        ' Use HSPLL during compilation

' *****************************************************************************
' *                                                                          *
' *                                VARIABLES                                *
' *                                                                          *
' *****************************************************************************

Test_1      var long                    ' 32 bits
Test_2      var long                    ' 32 bits
Test_3      var long                    ' 32 bits

A            var PORTC.0
B            var PORTC.1
C            var PORTC.2
D            var PORTC.3
Data_R1  var PORTC.4
Data_R2  var PORTC.5
Data_G1  var PORTC.6
Data_G2  var PORTC.7
E            var PORTE.0
Clock      var PORTF.1
Latch      var PORTF.0

' *****************************************************************************
' *                                                                          *
' *                                INITIALISE                                *
' *                                                                          *
' *****************************************************************************

ADCON1  = %00001111                ' All digital
CMCON  = %00000111                ' Comparators off, this frees up PORTF               
TRISA=0 : TRISB=0 : TRISC=0 : TRISD=0 : TRISE=0 : TRISF=0 : TRISG=0 : TRISH=0 : TRISJ=0
PORTA=0 : PORTB=0 : PORTC=0 : PORTD=0 : PORTE=0 : PORTF=0 : PORTG=0 : PORTH=0 : PORTJ=0

' *****************************************************************************
' *                                                                          *
' *                                  MAIN                                    *
' *                                                                          *
' *****************************************************************************

  HIGH E                                          ' Enables the display
  low latch                                        ' So PULSOUT goes high
Main:
    Test_1 = %11111111111111111111111111111111      ' Active low - so all off
    Test_2 = %11110000111100001111000011110000
    Test_3 = %10101010101010101010101010101010
   
    shiftout Data_G1, Clock, 4, [Test_2\32]
    shiftout Data_G1, Clock, 4, [Test_2\32]     
    pulsout Latch,5
   
    shiftout Data_R1, Clock, 4, [Test_1\32]
    shiftout Data_R1, Clock, 4, [Test_1\32]
    pulsout Latch,5
   
    shiftout Data_R2, Clock, 4, [Test_1\32]
    shiftout Data_R2, Clock, 4, [Test_1\32]
    pulsout Latch,5
     
    shiftout Data_G2, Clock, 4, [Test_3\32]
    shiftout Data_G2, Clock, 4, [Test_3\32]             
    Pulsout Latch,5
       
    A = 0
    B = 0
    C = 1
    D = 0
             
    GOTO Main
        end

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The web site is http://www.sure-electronics.com

Any help would be appreciated.

Regards Bill Legge

It may be silly, but since the Pulsout command just Toggles the port pin, are you sure all ports are at the correct state before?

Try the High/Low commands to check it.

Ioannis

Thanks - I had not thought of that. I forgot to set the initial states - I guess it's the sort of thing that one 'gets away with' most of the time.

I'll give it a try. It's a pity to have such a large dot-matrix display gatering dust!

Regards Bill Legge

If you want, please post a picture or video when you finishe it.

Ioannis