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author | Zay950 <[email protected]> | 2017-03-29 12:00:38 -0700 |
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committer | GitHub <[email protected]> | 2017-03-29 12:00:38 -0700 |
commit | 2366ebfbbdeb6ec29cc9a0facda44d666305dd6e (patch) | |
tree | 883efed0b7260f3143f5a2a879bc3844a8255e0b /quantum/pincontrol.h | |
parent | 80c5ada3394c5ad8087df00ef878eb2cbcd87d70 (diff) | |
parent | 942f2ccee44bdb2e251553e9730cd8d59307d8b2 (diff) | |
download | qmk_firmware-2366ebfbbdeb6ec29cc9a0facda44d666305dd6e.tar.gz qmk_firmware-2366ebfbbdeb6ec29cc9a0facda44d666305dd6e.zip |
Merge branch 'master' into to_push
Diffstat (limited to 'quantum/pincontrol.h')
-rw-r--r-- | quantum/pincontrol.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/quantum/pincontrol.h b/quantum/pincontrol.h new file mode 100644 index 0000000000..d77977ebe2 --- /dev/null +++ b/quantum/pincontrol.h @@ -0,0 +1,52 @@ +/* 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, +}; + +// 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; + } +} + +// 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; + } +} + +// Return true if the pin is HIGH +// digitalRead(B0) +static inline bool digitalRead(uint8_t pin) { + return _SFR_IO8(pin >> 4) & _BV(pin & 0xf); +} |