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qmk_firmware

custom branch of QMK firmware git clone https://anongit.hacktivis.me/git/qmk_firmware.git

matrix_extension_74hc15x.c (2653B)

    

  1. /*
  2. Copyright 2021 mtei
  4. This program is free software: you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation, either version 2 of the License, or
  7. (at your option) any later version.
  9. This program is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12. GNU General Public License for more details.
  14. You should have received a copy of the GNU General Public License
  15. along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16. */
  17. // clang-format off
  19. #include "atomic_util.h"
  20. #include "gpio.h"
  21. #include "wait.h"
  23. #if defined(MATRIX_EXTENSION_74HC157)
  24. #    define MATRIX_DEVICES MCU_GPIOa, MCU_GPIOb
  25. #    define IS_74HC15x(dev) ((dev)==MCU_GPIOa || (dev)==MCU_GPIOb)
  26. #    define MATRIX_EXT_74HC15x MATRIX_EXTENSION_74HC157
  27. #elif defined(MATRIX_EXTENSION_74HC153)
  28. #    define MATRIX_DEVICES MCU_GPIOa, MCU_GPIOb, MCU_GPIOc, MCU_GPIOd
  29. #    define IS_74HC15x(dev) ((dev)==MCU_GPIOa || (dev)==MCU_GPIOb || (dev)==MCU_GPIOc || (dev)==MCU_GPIOd)
  30. #    define MATRIX_EXT_74HC15x MATRIX_EXTENSION_74HC153
  31. #endif
  33. static const pin_t sel_pins[] = { MATRIX_EXT_74HC15x };
  35. #ifdef MATRIX_GPIO_NEED_SEPARATE_ATOMIC
  36. #    define setMatrixInputHigh(dev, port, bit) \
  37.     do {                                            \
  38.         if ((dev) == MCU_GPIO || IS_74HC15x(dev)) { \
  39.             setPortBitInputHigh_atomic(port, bit);  \
  40.         }
  41.     } while(0)
  42. #else
  43. #    define setMatrixInputHigh(dev, port, bit) \
  44.     do {                                            \
  45.         if ((dev) == MCU_GPIO || IS_74HC15x(dev)) { \
  46.             setPortBitInputHigh(port, bit);         \
  47.         }                                           \
  48.     } while(0)
  49. #endif
  51. LOCAL_FUNC ALWAYS_INLINE void select74HC15x(uint8_t devid);
  52. LOCAL_FUNC
  53. void select74HC15x(uint8_t devid) {
  54.     gpio_write_pin(sel_pins[0], devid&1);
  55. #if defined(MATRIX_EXTENSION_74HC153)
  56.     gpio_write_pin(sel_pins[1], devid&2);
  57. #endif
  58. }
  60. LOCAL_FUNC ALWAYS_INLINE port_width_t readPortMultiplexer(uint8_t devid, pin_t port);
  61. LOCAL_FUNC port_width_t readPortMultiplexer(uint8_t devid, pin_t port) {
  62.     select74HC15x(devid);
  63.     waitInputPinDelay();
  64.     return readPort(port);
  65. }
  67. #define readMatrixPort(dev, port) \
  68.     ((dev) == MCU_GPIO)? readPort(port): (IS_74HC15x(dev))? readPortMultiplexer((dev)-MCU_GPIOa, port):0
  70. #define INIT_74HC15X(x) gpio_set_pin_output(x); gpio_write_pin_low(x);
  71. LOCAL_FUNC
  72. void init_74hc15x(void) {
  73.     MAP(INIT_74HC15X, MATRIX_EXT_74HC15x)
  74. }
  75. #define init_extension() init_74hc15x()