Sure Electronics Dot Matrix Display

[Bill Legge]

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:

' 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

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

Any help would be appreciated.

Regards Bill Legge

[Ioannis]

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

[Bill Legge]

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

[Ioannis]

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

Ioannis