Fix pin configuration error(macway). issue #17
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				@ -217,9 +217,9 @@ static void unselect_rows(void)
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{
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    // Hi-Z(DDR:0, PORT:0) to unselect
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    DDRC  &= ~0b01000000; // PC: 6
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    PORTC &= ~0b11000000;
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    PORTC &= ~0b01000000;
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    DDRD  &= ~0b11100111; // PD: 7,6,5,2,1,0
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    PORTD &= ~0b11000111;
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    PORTD &= ~0b11100111;
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    DDRF  &= ~0b11000000; // PF: 7,6
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    PORTF &= ~0b11000000;
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}
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