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antorcha/tornado/fw/avr/io.h

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