diff options
author | climbalima <climbalima@gmail.com> | 2016-12-10 23:15:47 -0500 |
---|---|---|
committer | climbalima <climbalima@gmail.com> | 2016-12-10 23:15:47 -0500 |
commit | 73d60182969023984ff275117d49a4824c6987d0 (patch) | |
tree | fdac811b117c49f78de04c407d4bef76e6df5772 /quantum/pincontrol.h | |
parent | 56515ba5034e83c598891686cfdc43c186e5d487 (diff) | |
parent | 985a091a739c99736d5b17de5161831488dbc219 (diff) | |
download | firmware-73d60182969023984ff275117d49a4824c6987d0.tar.gz firmware-73d60182969023984ff275117d49a4824c6987d0.tar.bz2 firmware-73d60182969023984ff275117d49a4824c6987d0.zip |
Merge branch 'master' of https://github.com/jackhumbert/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 000000000..36ce29ef2 --- /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); +} |