diff options
author | dbroqua <dbroqua@mousur.org> | 2016-12-17 22:25:21 +0100 |
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committer | dbroqua <dbroqua@mousur.org> | 2016-12-17 22:25:21 +0100 |
commit | df50bee5a88cacbd1f5fab98b26c2068646b61c0 (patch) | |
tree | 60a59d80c173055788e66b7e9dd79aaad7b27df6 /quantum/pincontrol.h | |
parent | 46b93f02d570c0bb66410cb8d9af2451d5453635 (diff) | |
parent | 13c4080a1d77cb1dfdf48df8a42e78b9dc483912 (diff) |
Merge branch 'master' of https://github.com/Dbroqua/qmk_firmware
Diffstat (limited to 'quantum/pincontrol.h')
-rw-r--r-- | quantum/pincontrol.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/quantum/pincontrol.h b/quantum/pincontrol.h new file mode 100644 index 0000000000..36ce29ef22 --- /dev/null +++ b/quantum/pincontrol.h @@ -0,0 +1,37 @@ +#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); +} |