LV-674 User’s Manual Hardware Test
Programming GPIO’s
59
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 2E 87 ;enter configuration
-o 2E 87
-o 2E 29
-o 2E 40 ;enale GPIO function
-o 2E 07
-o 2E 07 ;enable GPIO configuration
-o 2E F0
-o 2F xx ;set GPIO as input/output; set ‘1’ for input,’0’for
output
-o 2E F1
-o 2F xx ;if set GPIO’s as output,in this register its value can
be set
Optional :
-o 2E F2
-o 2F xx ; Data inversion register ; ‘1’ inverts the current valus
of the bits ,’0’ leaves them as they are
-o 2E 30
-o 2F 01 ; active GPIO’s
For further information ,please refer to Winbond W83627THF datasheet.
Summary of Contents for LV-674
Page 1: ...LV 674 Mini ITX motherboard User s Manual Edition 1 00 2005 09 30 ...
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Page 12: ...LV 674 User s Manual Introduction Mechanial Drawing 12 1 5 Mechanical Drawing ...
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Page 55: ...LV 674 User s Manual I O Port Pin Assignment I 55 ...
Page 56: ...LV 674 User s Manual System Resources I O Port Address Map 56 B2 Memory Address Map ...
Page 57: ...LV 674 User s Manual I O Port Pin Assignment I 57 B3 System IRQ DMA Resources DMA IRQ ...
