Commell HS-770E Instrukcja Użytkownika Pobierz pdf (Strona 45)

HS-770(E) User’s Manual GPIO Programming

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 29

-o 4E 40 ;enale GPIO function

-o 4E 07

-o 4E 07 ;enable GPIO configuration

-o 4E F0

-o 4F xx ;set GPIO as input/output; set ‘1’ for input,’0’for output

-o 4E F1

-o4F 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 01 ; active GPIO’s

For further information, please refer to Winbond W83627THF datasheet.

Notice : All GPIO pin pull-high external resistance requirement

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Commell HS-770E Instrukcja Użytkownika Strona 45