+/* Copyright 2016 Wez Furlong
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
#pragma once
// Some helpers for controlling gpio pins
#include <avr/io.h>
enum {
- PinDirectionInput = 0,
- PinDirectionOutput = 1,
- PinLevelHigh = 1,
- PinLevelLow = 0,
+ PinDirectionInput = 0,
+ PinDirectionOutput = 1,
+ PinLevelHigh = 1,
+ PinLevelLow = 0,
};
// ex: pinMode(B0, PinDirectionOutput);
static inline void pinMode(uint8_t pin, int mode) {
- uint8_t bv = _BV(pin & 0xf);
- if (mode == PinDirectionOutput) {
- _SFR_IO8((pin >> 4) + 1) |= bv;
- } else {
- _SFR_IO8((pin >> 4) + 1) &= ~bv;
- _SFR_IO8((pin >> 4) + 2) &= ~bv;
- }
+ uint8_t bv = _BV(pin & 0xf);
+ if (mode == PinDirectionOutput) {
+ _SFR_IO8((pin >> 4) + 1) |= bv;
+ } else {
+ _SFR_IO8((pin >> 4) + 1) &= ~bv;
+ _SFR_IO8((pin >> 4) + 2) &= ~bv;
+ }
}
// ex: digitalWrite(B0, PinLevelHigh);
static inline void digitalWrite(uint8_t pin, int mode) {
- uint8_t bv = _BV(pin & 0xf);
- if (mode == PinLevelHigh) {
- _SFR_IO8((pin >> 4) + 2) |= bv;
- } else {
- _SFR_IO8((pin >> 4) + 2) &= ~bv;
- }
+ uint8_t bv = _BV(pin & 0xf);
+ if (mode == PinLevelHigh) {
+ _SFR_IO8((pin >> 4) + 2) |= bv;
+ } else {
+ _SFR_IO8((pin >> 4) + 2) &= ~bv;
+ }
}
// Return true if the pin is HIGH
// digitalRead(B0)
-static inline bool digitalRead(uint8_t pin) {
- return _SFR_IO8(pin >> 4) & _BV(pin & 0xf);
-}
+static inline bool digitalRead(uint8_t pin) { return _SFR_IO8(pin >> 4) & _BV(pin & 0xf); }