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@ -1,4 +1,5 @@
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/* Copyright 2016 Wez Furlong
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* 2017 Jack Humbert
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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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@ -14,23 +15,35 @@
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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// Some helpers for controlling gpio pins
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#if defined(PROTOCOL_CHIBIOS)
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#include "hal.h"
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#define PIN_VALUE(p) palReadPad(p & 0xFFFFFFF0, p & 0xF)
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#define DDR_OUTPUT(p) palSetPadMode(p & 0xFFFFFFF0, p & 0xF, PAL_MODE_OUTPUT_PUSHPULL)
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#define DDR_INPUT(p) palSetPadMode(p & 0xFFFFFFF0, p & 0xF, PAL_MODE_INPUT_PULLDOWN)
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#define PORT_HIGH(p) palSetPad(p & 0xFFFFFFF0, p & 0xF)
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#define PORT_LOW(p) palClearPad(p & 0xFFFFFFF0, p & 0xF)
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#endif
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#if defined(__AVR__)
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#include <avr/io.h>
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#endif
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static inline volatile uint8_t* helper(pin_t p, uint8_t offset) {
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return (volatile uint8_t*)((p >> 4) + offset + __SFR_OFFSET);
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}
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#define PIN_ADDRESS(p, offset) _SFR_IO8(ADDRESS_BASE + (p >> PORT_SHIFTER) + offset)
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#define PIN(p) *helper(p, 0)
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#define PIN(p) PIN_ADDRESS(p, 0)
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#define PIN_VALUE(p) (PIN(p) & _BV(p & 0xF))
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#define DDR(p) *helper(p, 1)
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#define DDR(p) PIN_ADDRESS(p, 1)
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#define DDR_OUTPUT(p) (DDR(p) |= _BV(p & 0xF))
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#define DDR_INPUT(p) (DDR(p) &= ~_BV(p & 0xF))
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#define PORT(p) *helper(p, 2)
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#define PORT(p) PIN_ADDRESS(p, 2)
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#define PORT_HIGH(p) (PORT(p) |= _BV(p & 0xF))
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#define PORT_LOW(p) (PORT(p) &= ~_BV(p & 0xF))
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@ -69,3 +82,5 @@ static inline void digitalWrite(uint8_t pin, int mode) {
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static inline bool digitalRead(uint8_t pin) {
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return _SFR_IO8(pin >> 4) & _BV(pin & 0xf);
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}
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#endif
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