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67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
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/*
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* fw/io.h - I/O helper macros
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*
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* Written 2012 by Werner Almesberger
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* Copyright 2012 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef IO_H
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#define IO_H
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#include <avr/io.h>
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#define LED_DS D, 1
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#define LED_LCLK D, 2
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#define LED_SCLK D, 4
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#define CARD_nPWR B, 6
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#define CARD_DAT2 B, 2
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#define CARD_DAT3 B, 1
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#define CARD_CMD B, 3
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#define CARD_CLK B, 0
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#define CARD_DAT0 B, 4
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#define CARD_DAT1 B, 5
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#define SW_N C, 3
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#define SW_E C, 4
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#define SW_S C, 0
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#define SW_W C, 2
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#define SW_SW C, 1
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#define ADC_X 6
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#define ADC_Y 7
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#define __SET(port, bit) PORT##port |= 1 << (bit)
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#define __CLR(port, bit) PORT##port &= ~(1 << (bit))
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#define __OUT(port, bit) DDR##port |= 1 << (bit)
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#define __IN(port, bit) DDR##port &= ~(1 << (bit))
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#define __PIN(port, bit) ((PIN##port >> (bit)) & 1)
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#define SET(...) __SET(__VA_ARGS__)
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#define CLR(...) __CLR(__VA_ARGS__)
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#define OUT(...) __OUT(__VA_ARGS__)
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#define IN(...) __IN(__VA_ARGS__)
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#define PIN(...) __PIN(__VA_ARGS__)
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#define __SEL_BB(v) (v)
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#define __SEL_CC(v) (v)
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#define __SEL_DD(v) (v)
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#define __SEL_BC(v) (0)
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#define __SEL_BD(v) (0)
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#define __SEL_CB(v) (0)
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#define __SEL_CD(v) (0)
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#define __SEL_DB(v) (0)
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#define __SEL_DC(v) (0)
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#define __MASK(sel, port, bit) __SEL_##sel##port(1 << (bit))
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#define MASK(...) __MASK(__VA_ARGS__)
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#endif /* IO_H */
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