Global Upholstery Co 3307568 Appendix D <Programming GPIOs>

3307568 User’s Manual
Appendix D <Programming GPIO’s>
The GPIO’can be programmed with the MS DOS debug program using simple
IN/OUT commands.The following lines show an exa mple how to do this.
GPIO0…..GPIO7 bit0……bit7
-o 4E 87 ;enter configuration
-o 4E 87
-o 4E 07
-o 4F 09 ;enable GPIO function
-o 4E 30
-o 4F 02 ;enable GPIO configuration
-o 4E F0
-o 4F xx ;set GPIO as input/output; set ‘1’for inp ut,’0’for
output
-o 4E F1
-o 4F xx ;if set GPIO’s as output,inthis regis ter its value can
be set
Optional :
-o 4E F2
-o 4F xx ;Data inversion register ;‘1’ inverts the current valus
of the bits ,’0’ leave s them as they are
-o 4E 30
-o 4F 02 ;active GPIO’s
For further information ,please refer to Winbond W83627DHG datasheet.
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