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qmk_firmware

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

matrix.c (4572B)

    

  1. /*
  2.   Copyright 2017 Gabriel Young <gabeplaysdrums@live.com>
  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. */
  18. #include <stdint.h>
  19. #include <stdbool.h>
  20. #include <avr/io.h>
  21. #include <util/delay.h>
  22. #include "print.h"
  23. #include "debug.h"
  24. #include "util.h"
  25. #include "matrix.h"
  27. #ifndef DEBOUNCE
  28. #   define DEBOUNCE 5
  29. #endif
  30. static uint8_t debouncing = DEBOUNCE;
  32. static matrix_row_t matrix[MATRIX_ROWS];
  33. static matrix_row_t matrix_debouncing[MATRIX_ROWS];
  35. __attribute__ ((weak))
  36. void matrix_init_kb(void) {
  37.     matrix_init_user();
  38. }
  40. __attribute__ ((weak))
  41. void matrix_scan_kb(void) {
  42.     matrix_scan_user();
  43. }
  45. __attribute__ ((weak))
  46. void matrix_init_user(void) {
  47. }
  49. __attribute__ ((weak))
  50. void matrix_scan_user(void) {
  51. }
  53. static matrix_row_t scan_col(void) {
  54.     return (
  55. 		(PINC&(1<<2) ? 0 : ((matrix_row_t)1<<0)) | \
  56. 		(PINB&(1<<3) ? 0 : ((matrix_row_t)1<<1)) | \
  57. 		(PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) | \
  58. 		(PINB&(1<<2) ? 0 : ((matrix_row_t)1<<3)) | \
  59. 		(PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) | \
  60. 		(PINC&(1<<7) ? 0 : ((matrix_row_t)1<<5)) | \
  61. 		(PINB&(1<<6) ? 0 : ((matrix_row_t)1<<6)) | \
  62. 		(PINB&(1<<5) ? 0 : ((matrix_row_t)1<<7))
  63. 	);
  64. }
  66. static void select_col(uint8_t col) {
  67.     switch (col) {
  68.         case  0: PORTD = (PORTD & ~0b01110111) | 0b01110110; break; \
  69. 		case  1: PORTD = (PORTD & ~0b01110111) | 0b01100001; break; \
  70. 		case  2: PORTD = (PORTD & ~0b01110111) | 0b01100101; break; \
  71. 		case  3: PORTD = (PORTD & ~0b01110111) | 0b00000011; break; \
  72. 		case  4: PORTD = (PORTD & ~0b01110111) | 0b00000111; break; \
  73. 		case  5: PORTD = (PORTD & ~0b01110111) | 0b00010011; break; \
  74. 		case  6: PORTD = (PORTD & ~0b01110111) | 0b00010111; break; \
  75. 		case  7: PORTD = (PORTD & ~0b01110111) | 0b00100011; break; \
  76. 		case  8: PORTD = (PORTD & ~0b01110111) | 0b00100111; break; \
  77. 		case  9: PORTD = (PORTD & ~0b01110111) | 0b00110011; break; \
  78. 		case 10: PORTD = (PORTD & ~0b01110111) | 0b01110010; break; \
  79. 		case 11: PORTD = (PORTD & ~0b01110111) | 0b01100110; break; \
  80. 		case 12: PORTD = (PORTD & ~0b01110111) | 0b01110000; break; \
  81. 		case 13: PORTD = (PORTD & ~0b01110111) | 0b01100100; break; \
  82. 		case 14: PORTD = (PORTD & ~0b01110111) | 0b01100000; break; \
  83. 		case 15: PORTD = (PORTD & ~0b01110111) | 0b01000111; break; \
  84. 		case 16: PORTD = (PORTD & ~0b01110111) | 0b01000011; break; \
  85. 		case 17: PORTD = (PORTD & ~0b01110111) | 0b00110111; break;
  86.     }
  87. }
  89. void matrix_init(void) {
  90.     /* Column output pins */ \
  91. 	DDRD  |=  0b01110111;    \
  92. 	/* Row input pins */     \
  93. 	DDRC  &= ~0b10000100;    \
  94. 	DDRB  &= ~0b01111110;    \
  95. 	PORTC |=  0b10000100;    \
  96. 	PORTB |=  0b01111110;
  98.     for (uint8_t i=0; i < MATRIX_ROWS; i++)
  99.         matrix[i] = matrix_debouncing[i] = 0;
  101.     matrix_init_kb();
  102. }
  104. uint8_t matrix_scan(void) {
  105.     for (uint8_t col = 0; col < MATRIX_COLS; col++) {
  106.         select_col(col);
  107.         _delay_us(3);
  108.         matrix_row_t col_scan = scan_col();
  109.         for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
  110.             bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
  111.             bool curr_bit = col_scan & (1<<row);
  112.             if (prev_bit != curr_bit) {
  113.                 matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
  114.                 debouncing = DEBOUNCE;
  115.             }
  116.         }
  117.     }
  119.     if (debouncing) {
  120.         if (--debouncing)
  121.             _delay_ms(1);
  122.         else
  123.             for (uint8_t i = 0; i < MATRIX_ROWS; i++)
  124.                 matrix[i] = matrix_debouncing[i];
  125.     }
  127.     matrix_scan_kb();
  128.     return 1;
  129. }
  131. inline matrix_row_t matrix_get_row(uint8_t row) {
  132.     return matrix[row];
  133. }
  135. void matrix_print(void) {
  136. 	#ifndef NO_PRINT
  137.     print("\nr\\c ABCDEFGHIJKLMNOPQR\n");
  138.     for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
  139.         matrix_row_t matrix_row = matrix_get_row(row);
  140.         xprintf("%02X: ", row);
  141.         for (uint8_t col = 0; col < MATRIX_COLS; col++) {
  142.             bool curr_bit = matrix_row & (1<<col);
  143.             xprintf("%c", curr_bit ? '*' : '.');
  144.         }
  145.         print("\n");
  146.     }
  147. 	#endif
  148. }