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@ -43,16 +43,16 @@
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#include <avr/power.h>
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/* Macros: */
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#define RS (0x10) // PD4
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#define ENABLE (0x80) // PD7
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#define RS (1 << 4) /* PD4 */
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#define ENABLE (1 << 7) /* PD7 */
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#define HI4_MASK (0xF0)
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#define LO4_MASK (0x0F) // PD0..3
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#define HI4_MASK 0xF0
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#define LO4_MASK 0x0F /* PD0-PD3 */
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#define ALL_BITS (RS|ENABLE|LO4_MASK)
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#define ALL_BITS (RS | ENABLE | LO4_MASK)
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#define HI4( c ) (( c & HI4_MASK ) >> 4 )
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#define LO4( c ) (( c & LO4_MASK ) >> 0 )
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#define HI4(c) ((c & HI4_MASK) >> 4)
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#define LO4(c) ((c & LO4_MASK) >> 0)
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#define CMD_DISPLAY_ON 0x0C
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