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56476539cf
The boot loader currently uses the protocol switch intended for the application. This makes it too big to fit in the very limiting constraints the ATmega168 poses - and there's not even cryptographic authentication yet. We'll have to dumb it down quite a bit.
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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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_B6 D, 5
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#define LED_B7 D, 6
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#define LED_B8 D, 7
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#define RF_SCLK B, 5
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#define RF_MISO B, 4
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#define RF_MOSI B, 3
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#define RF_nSS B, 2 /* called nSS in schematics */
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#define RF_IRQ B, 1
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#define RF_nRST B, 0
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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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#if 0
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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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#endif
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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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