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qmk_firmware

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

matrix.c (7381B)

    

  1. /*
  2. Copyright 2019 worthlessowl
  3. based on work by:
  4. Jun Wako <wakojun@gmail.com>
  5. Cole Markham <cole@ccmcomputing.net>
  7. This program is free software: you can redistribute it and/or modify
  8. it under the terms of the GNU General Public License as published by
  9. the Free Software Foundation, either version 2 of the License, or
  10. (at your option) any later version.
  11. This program is distributed in the hope that it will be useful,
  12. but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14. GNU General Public License for more details.
  15. You should have received a copy of the GNU General Public License
  16. along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17. */
  19. /*
  20.  * scan matrix
  21.  */
  22. #include <stdint.h>
  23. #include <stdbool.h>
  24. #include "wait.h"
  25. #include "print.h"
  26. #include "debug.h"
  27. #include "util.h"
  28. #include "matrix.h"
  29. #include "timer.h"
  31. #if (MATRIX_COLS <= 8)
  32. #    define print_matrix_header()  print("\nr/c 01234567\n")
  33. #    define print_matrix_row(row)  print_bin_reverse8(matrix_get_row(row))
  34. #    define ROW_SHIFTER ((uint8_t)1)
  35. #elif (MATRIX_COLS <= 16)
  36. #    define print_matrix_header()  print("\nr/c 0123456789ABCDEF\n")
  37. #    define print_matrix_row(row)  print_bin_reverse16(matrix_get_row(row))
  38. #    define ROW_SHIFTER ((uint16_t)1)
  39. #elif (MATRIX_COLS <= 32)
  40. #    define print_matrix_header()  print("\nr/c 0123456789ABCDEF0123456789ABCDEF\n")
  41. #    define print_matrix_row(row)  print_bin_reverse32(matrix_get_row(row))
  42. #    define ROW_SHIFTER  ((uint32_t)1)
  43. #endif
  45. static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
  46. static const uint8_t col_select_pins[3] = MATRIX_COL_SELECT_PINS;
  47. static const uint8_t dat_pin = MATRIX_COL_DATA_PIN;
  49. /* matrix state(1:on, 0:off) */
  50. static matrix_row_t raw_matrix[MATRIX_ROWS]; //raw values
  51. static matrix_row_t matrix[MATRIX_ROWS]; //raw values
  53. /* 2d array containing binary representation of its index */
  54. static const uint8_t num_in_binary[8][3] = {
  55.     {0, 0, 0},
  56.     {0, 0, 1},
  57.     {0, 1, 0},
  58.     {0, 1, 1},
  59.     {1, 0, 0},
  60.     {1, 0, 1},
  61.     {1, 1, 0},
  62.     {1, 1, 1},
  63. };
  65. static void select_col_analog(uint8_t col);
  66. static void mux_pin_control(const uint8_t binary[]);
  67. void debounce_init(uint8_t num_rows);
  68. void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed);
  71. __attribute__ ((weak))
  72. void matrix_init_user(void) {}
  74. __attribute__ ((weak))
  75. void matrix_scan_user(void) {}
  77. __attribute__ ((weak))
  78. void matrix_init_kb(void) {
  79.   matrix_init_user();
  80. }
  82. __attribute__ ((weak))
  83. void matrix_scan_kb(void) {
  84.   matrix_scan_user();
  85. }
  87. inline
  88. uint8_t matrix_rows(void)
  89. {
  90.     return MATRIX_ROWS;
  91. }
  93. inline
  94. uint8_t matrix_cols(void)
  95. {
  96.     return MATRIX_COLS;
  97. }
  99. inline
  100. bool matrix_is_on(uint8_t row, uint8_t col)
  101. {
  102.     return (matrix[row] & ((matrix_row_t)1<<col));
  103. }
  105. inline
  106. matrix_row_t matrix_get_row(uint8_t row)
  107. {
  108.     // Matrix mask lets you disable switches in the returned matrix data. For example, if you have a
  109.     // switch blocker installed and the switch is always pressed.
  110. #ifdef MATRIX_MASKED
  111.     return matrix[row] & matrix_mask[row];
  112. #else
  113.     return matrix[row];
  114. #endif
  115. }
  117. void matrix_print(void)
  118. {
  119.     print_matrix_header();
  121.     for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
  122.         print_hex8(row); print(": ");
  123.         print_matrix_row(row);
  124.         print("\n");
  125.     }
  126. }
  128. // uses standard row code
  129. static void select_row(uint8_t row)
  130. {
  131.     gpio_set_pin_output(row_pins[row]);
  132.     gpio_write_pin_low(row_pins[row]);
  133. }
  135. static void unselect_row(uint8_t row)
  136. {
  137.     gpio_set_pin_input_high(row_pins[row]);
  138. }
  140. static void unselect_rows(void)
  141. {
  142.     for(uint8_t x = 0; x < MATRIX_ROWS; x++) {
  143.         gpio_set_pin_input_high(row_pins[x]);
  144.     }
  145. }
  147. static void init_pins(void) {   // still need some fixing, this might not work
  148.   unselect_rows();              // with the loop
  149.   /*
  150.   for (uint8_t x = 0; x < MATRIX_COLS; x++) {
  151.     gpio_set_pin_input_high(col_pins[x]);
  152.   }
  153.   */
  154.   gpio_set_pin_input_high(dat_pin);
  155. }
  157. static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
  158. {
  159.     // Store last value of row prior to reading
  160.     matrix_row_t last_row_value = current_matrix[current_row];
  162.     // Clear data in matrix row
  163.     current_matrix[current_row] = 0;
  165.     // Select row and wait for row selecton to stabilize
  166.     select_row(current_row);
  167.     wait_us(30);
  169.     // For each col...
  170.     for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
  172.         // Select the col pin to read (active low)
  173.         select_col_analog(col_index);
  174.         wait_us(30);
  175.         uint8_t pin_state = gpio_read_pin(dat_pin);
  177.         // Populate the matrix row with the state of the col pin
  178.         current_matrix[current_row] |=  pin_state ? 0 : (ROW_SHIFTER << col_index);
  179.     }
  181.     // Unselect row
  182.     unselect_row(current_row);
  184.     return (last_row_value != current_matrix[current_row]);
  185. }
  188. void matrix_init(void) {
  190.     // initialize key pins
  191.     init_pins();
  193.     // initialize matrix state: all keys off
  194.     for (uint8_t i=0; i < MATRIX_ROWS; i++) {
  195.         raw_matrix[i] = 0;
  196.         matrix[i] = 0;
  197.     }
  199.     debounce_init(MATRIX_ROWS);
  201.     matrix_init_kb();
  203.     gpio_set_pin_input(D5);
  204.     gpio_set_pin_input(B0);
  205. }
  207. // modified for per col read matrix scan
  208. uint8_t matrix_scan(void)
  209. {
  210.     bool changed = false;
  212.     for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
  213.         changed |= read_cols_on_row(raw_matrix, current_row);
  214.     }
  216.     debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
  218.     matrix_scan_kb();
  219.     return (uint8_t)changed;
  220. }
  222. /*
  223. uint8_t matrix_scan(void)
  224. {
  225.   bool changed = false;
  227. #if (DIODE_DIRECTION == COL2ROW)
  228.   // Set row, read cols
  229.   for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
  230.     changed |= read_cols_on_row(raw_matrix, current_row);
  231.   }
  232. #endif
  234.   debounce(raw_matrix, matrix, MATRIX_ROWS, changed);
  236.   matrix_scan_kb();
  237.   return (uint8_t)changed;
  238. }
  239. */
  241. static void select_col_analog(uint8_t col) {
  242.     switch(col) {
  244.         case 0:
  245.             mux_pin_control(num_in_binary[0]);
  246.             break;
  247.         case 1:
  248.             mux_pin_control(num_in_binary[1]);
  249.             break;
  250.         case 2:
  251.             mux_pin_control(num_in_binary[2]);
  252.             break;
  253.         case 3:
  254.             mux_pin_control(num_in_binary[3]);
  255.             break;
  256.         case 4:
  257.             mux_pin_control(num_in_binary[4]);
  258.             break;
  259.         case 5:
  260.             mux_pin_control(num_in_binary[5]);
  261.             break;
  262.         case 6:
  263.             mux_pin_control(num_in_binary[6]);
  264.             break;
  265.         case 7:
  266.             mux_pin_control(num_in_binary[7]);
  267.             break;
  268.         default:
  269.             break;
  270.     }
  271. }
  273. static void mux_pin_control(const uint8_t binary[]) {
  274.     // set pin0
  275.     gpio_set_pin_output(col_select_pins[0]);
  276.     if(binary[2] == 0) {
  277.         gpio_write_pin_low(col_select_pins[0]);
  278.     }
  279.     else {
  280.         gpio_write_pin_high(col_select_pins[0]);
  281.     }
  282.     // set pin1
  283.     gpio_set_pin_output(col_select_pins[1]);
  284.     if(binary[1] == 0) {
  285.         gpio_write_pin_low(col_select_pins[1]);
  286.     }
  287.     else {
  288.         gpio_write_pin_high(col_select_pins[1]);
  289.     }
  290.     // set pin2
  291.     gpio_set_pin_output(col_select_pins[2]);
  292.     if(binary[0] == 0) {
  293.         gpio_write_pin_low(col_select_pins[2]);
  294.     }
  295.     else {
  296.         gpio_write_pin_high(col_select_pins[2]);
  297.     }
  298. }