diff options
Diffstat (limited to 'keyboards/handwired/symmetric70_proto/matrix_fast/matrix_extension_74hc15x.c')
-rw-r--r-- | keyboards/handwired/symmetric70_proto/matrix_fast/matrix_extension_74hc15x.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/keyboards/handwired/symmetric70_proto/matrix_fast/matrix_extension_74hc15x.c b/keyboards/handwired/symmetric70_proto/matrix_fast/matrix_extension_74hc15x.c new file mode 100644 index 0000000000..bca53da24c --- /dev/null +++ b/keyboards/handwired/symmetric70_proto/matrix_fast/matrix_extension_74hc15x.c @@ -0,0 +1,72 @@ +/* +Copyright 2021 mtei + +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/>. +*/ +// clang-format off + +#if defined(MATRIX_EXTENSION_74HC157) +# define MATRIX_DEVICES MCU_GPIOa, MCU_GPIOb +# define IS_74HC15x(dev) ((dev)==MCU_GPIOa || (dev)==MCU_GPIOb) +# define MATRIX_EXT_74HC15x MATRIX_EXTENSION_74HC157 +#elif defined(MATRIX_EXTENSION_74HC153) +# define MATRIX_DEVICES MCU_GPIOa, MCU_GPIOb, MCU_GPIOc, MCU_GPIOd +# define IS_74HC15x(dev) ((dev)==MCU_GPIOa || (dev)==MCU_GPIOb || (dev)==MCU_GPIOc || (dev)==MCU_GPIOd) +# define MATRIX_EXT_74HC15x MATRIX_EXTENSION_74HC153 +#endif + +static const pin_t sel_pins[] = { MATRIX_EXT_74HC15x }; + +#ifdef MATRIX_GPIO_NEED_SEPARATE_ATOMIC +# define setMatrixInputHigh(dev, port, bit) \ + do { \ + if ((dev) == MCU_GPIO || IS_74HC15x(dev)) { \ + setPortBitInputHigh_atomic(port, bit); \ + } + } while(0) +#else +# define setMatrixInputHigh(dev, port, bit) \ + do { \ + if ((dev) == MCU_GPIO || IS_74HC15x(dev)) { \ + setPortBitInputHigh(port, bit); \ + } \ + } while(0) +#endif + +LOCAL_FUNC ALWAYS_INLINE void select74HC15x(uint8_t devid); +LOCAL_FUNC +void select74HC15x(uint8_t devid) { + writePin(sel_pins[0], devid&1); +#if defined(MATRIX_EXTENSION_74HC153) + writePin(sel_pins[1], devid&2); +#endif +} + +LOCAL_FUNC ALWAYS_INLINE port_width_t readPortMultiplexer(uint8_t devid, pin_t port); +LOCAL_FUNC port_width_t readPortMultiplexer(uint8_t devid, pin_t port) { + select74HC15x(devid); + waitInputPinDelay(); + return readPort(port); +} + +#define readMatrixPort(dev, port) \ + ((dev) == MCU_GPIO)? readPort(port): (IS_74HC15x(dev))? readPortMultiplexer((dev)-MCU_GPIOa, port):0 + +#define INIT_74HC15X(x) setPinOutput(x); writePinLow(x); +LOCAL_FUNC +void init_74hc15x(void) { + MAP(INIT_74HC15X, MATRIX_EXT_74HC15x) +} +#define init_extension() init_74hc15x() + |