Global Upholstery Co 3307568 user manual Appendix D Programming GPIO’s, GPIO0…..GPIO7

3307568 User’s Manual

Appendix D <Programming GPIO’s>

The GPIO’can be programmed with the MSDOS debug program using simple IN/OUT commands.The following lines show an example 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 input,’0’for
	output
-o 4E F1
-o 4F xx	;if set GPIO’s as output,in this register its value can
	be set
Optional :
-o 4E F2
-o 4F xx	; Data inversion register ; ‘1’ inverts the current valus
	of the bits ,’0’ leaves 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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