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qmk_firmware

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

matrix.c (7160B)

    

  1. /*
  2. Copyright 2019 MechMerlin <mechmerlin@gmail.com>
  3. This program is free software: you can redistribute it and/or modify
  4. it under the terms of the GNU General Public License as published by
  5. the Free Software Foundation, either version 2 of the License, or
  6. (at your option) any later version.
  8. This program is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11. GNU General Public License for more details.
  13. You should have received a copy of the GNU General Public License
  14. along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15. */
  17. #include <util/delay.h>
  18. #include <avr/io.h>
  19. #include <stdio.h>
  20. #include "matrix.h"
  21. #include "util.h"
  22. #include "print.h"
  23. #include "debug.h"
  25. #ifndef DEBOUNCE
  26. #    define DEBOUNCE 5
  27. #endif
  29. static uint8_t debouncing = DEBOUNCE;
  31. /* matrix state(1:on, 0:off) */
  32. static matrix_row_t matrix[MATRIX_ROWS];
  33. static matrix_row_t matrix_debouncing[MATRIX_ROWS];
  35. static uint8_t read_rows(uint8_t col);
  36. static void init_rows(void);
  37. static void unselect_cols(void);
  38. static void select_col(uint8_t col);
  41. __attribute__ ((weak))
  42. void matrix_init_kb(void) {
  43.     matrix_init_user();
  44. }
  46. __attribute__ ((weak))
  47. void matrix_scan_kb(void) {
  48.     matrix_scan_user();
  49. }
  51. __attribute__ ((weak))
  52. void matrix_init_user(void) {
  53. }
  55. __attribute__ ((weak))
  56. void matrix_scan_user(void) {
  57. }
  59. void backlight_init_ports(void)
  60. {
  61.   // DDRD  |=  0b11010000;
  62.   // PORTD &= ~0b01010000;
  63.   // PORTD |=  0b10000000;
  64.   // DDRB  |=  0b00011111;
  65.   // PORTB &= ~0b00001110;
  66.   // PORTB |=  0b00010001;
  67.   // DDRE  |=  0b01000000;
  68.   // PORTE &= ~0b01000000;
  69. }
  71. void matrix_init(void) {
  72.   backlight_init_ports();
  73.   unselect_cols();
  74.   init_rows();
  76.   for (uint8_t i=0; i < MATRIX_ROWS; i++)  {
  77.     matrix[i] = 0;
  78.     matrix_debouncing[i] = 0;
  79.   }
  81.   matrix_init_kb();
  82. }
  84. uint8_t matrix_scan(void) {
  85.   for (uint8_t col = 0; col < MATRIX_COLS; col++) {
  86.     select_col(col);
  87.     _delay_us(3);
  89.     uint8_t rows = read_rows(col);
  91.     for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
  92.       bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
  93.       bool curr_bit = rows & (1<<row);
  94.       if (prev_bit != curr_bit) {
  95.         matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
  96.         if (debouncing) {
  97.             dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
  98.         }
  99.         debouncing = DEBOUNCE;
  100.       }
  101.     }
  102.     unselect_cols();
  103.   }
  105.   if (debouncing) {
  106.     if (--debouncing) {
  107.       _delay_ms(1);
  108.     } else {
  109.       for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
  110.         matrix[i] = matrix_debouncing[i];
  111.       }
  112.     }
  113.   }
  115.   matrix_scan_kb();
  116.   return 1;
  117. }
  119. inline matrix_row_t matrix_get_row(uint8_t row) {
  120.   return matrix[row];
  121. }
  123. void matrix_print(void) {
  124.   print("\nr/c 0123456789ABCDEF\n");
  125.   for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
  126.     xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
  127.   }
  128. }
  129. /* Row pin configuration
  130.  * row: 0    1    2    3    4    5
  131.  * pin: PB7  PD0  PD1  PD2  PD3  PD5
  132.  *
  133.  * Reset Key uses its own pin PE2
  134.  */
  135. static void init_rows(void) {
  136.     DDRD  &= ~0b00101111;
  137.     PORTD &= ~0b00101111;
  139.     DDRB  &= ~0b10000000;
  140.     PORTB &= ~0b10000000;
  142.     DDRE  &= ~0b00000100;
  143.     PORTE |=  0b00000100;
  144. }
  146. static uint8_t read_rows(uint8_t col) {
  147.   if (col == 19) {
  148.     return PINE&(1<<2) ? 0 : (1<<0);
  149.   } else {
  150.       return (PIND&(1<<0) ? (1<<1) : 0) |
  151.              (PIND&(1<<1) ? (1<<2) : 0) |
  152.              (PIND&(1<<2) ? (1<<3) : 0) |
  153.              (PIND&(1<<3) ? (1<<4) : 0) |
  154.              (PIND&(1<<5) ? (1<<5) : 0) |
  155.              (PINB&(1<<7) ? (1<<0) : 0);
  156.     }
  157. }
  160. /* Columns 0 - G
  161.  * These columns uses two 74HC237D 3 to 8 bit demultiplexers.
  162.  *
  163.  * atmega32u4    decoder    pin
  164.  *    C6           U1       E2
  165.  *    B6           U2       E2
  166.  *    F0          U1, U2    A0
  167.  *    F1          U1, U2    A1
  168.  *    C7          U1, U2    A2
  169.  *
  170.  * col 0: B4
  171.  * col 1: D7
  172.  * col I: B5
  173.  *
  174.  * col / pin:    PC6  PB6  PF0  PF1  PC7  Decoder Pin
  175.  * 2:             1    0    0    0    0     U1    Y0
  176.  * 3:             1    0    1    0    0     U1    Y1
  177.  * 4:             1    0    0    1    0     U1    Y2
  178.  * 5:             1    0    1    1    0     U1    Y3
  179.  * 6:             1    0    0    0    1     U1    Y4
  180.  * 7:             1    0    1    0    1     U1    Y5
  181.  * 8:             1    0    0    1    1     U1    Y6
  182.  * 9:             1    0    1    1    1     U1    Y7
  183.  * A:             0    1    0    0    0     U2    Y0
  184.  * B:             0    1    1    0    0     U2    Y1
  185.  * C:             0    1    0    1    0     U2    Y2
  186.  * D:             0    1    1    1    0     U2    Y3
  187.  * E:             0    1    0    0    1     U2    Y4
  188.  * F:             0    1    1    0    1     U2    Y5
  189.  * G:             0    1    0    1    1     U2    Y6
  190.  * H:             0    1    1    1    1     U2    Y7
  191.  *
  192.  */
  193. static void unselect_cols(void) {
  194.   DDRB  |=  0b01110000;
  195.   PORTB &= ~0b01110000;
  197.   DDRC  |=  0b11000000;
  198.   PORTC &= ~0b11000000;
  200.   DDRD  |=  0b10000000;
  201.   PORTD &= ~0b10000000;
  203.   DDRF  |=  0b00000011;
  204.   PORTF &= ~0b00000011;
  205. }
  207. static void select_col(uint8_t col) {
  208.  
  209.    switch (col) {
  210.         case 0:
  211.             PORTB |= 0b00010000;
  212.             break;
  213.         case 1:
  214.             PORTD |= 0b10000000;
  215.             break;
  216.         case 2: // U1 Y0
  217.             PORTC |= 0b01000000;
  218.             break;
  219.         case 3: // U1 Y1
  220.             PORTC |= 0b01000000;
  221.             PORTF |= 0b00000001;
  222.             break;
  223.         case 4: // U1 Y2
  224.             PORTC |= 0b01000000;
  225.             PORTF |= 0b00000010;
  226.             break;
  227.         case 5: // U1 Y3
  228.             PORTC |= 0b01000000;
  229.             PORTF |= 0b00000011;
  230.             break;
  231.         case 6: // U1 Y4
  232.             PORTC |= 0b11000000;
  233.             break;
  234.         case 7: // U1 Y5
  235.             PORTC |= 0b11000000;
  236.             PORTF |= 0b00000001;
  237.             break;
  238.         case 8: // U1 Y6
  239.             PORTC |= 0b11000000;
  240.             PORTF |= 0b00000010;
  241.             break;
  242.         case 9: // U1 Y7
  243.             PORTC |= 0b11000000;
  244.             PORTF |= 0b00000011;
  245.             break;
  246.         case 10: // U2 Y0
  247.             PORTB |= 0b01000000;
  248.             break;
  249.         case 11: // U2 Y1
  250.             PORTB |= 0b01000000;
  251.             PORTF |= 0b00000001;
  252.             break;
  253.         case 12: // U2 Y2
  254.             PORTB |= 0b01000000;
  255.             PORTF |= 0b00000010;
  256.             break;
  257.         case 13: // U2 Y3
  258.             PORTB |= 0b01000000;
  259.             PORTF |= 0b00000011;
  260.             break;
  261.         case 14: // U2 Y4
  262.             PORTB |= 0b01000000;
  263.             PORTC |= 0b10000000;
  264.             break;
  265.         case 15: // U2 Y5
  266.             PORTB |= 0b01000000;
  267.             PORTC |= 0b10000000;
  268.             PORTF |= 0b00000001;
  269.             break;
  270.         case 16: // U2 Y6
  271.             PORTB |= 0b01000000;
  272.             PORTC |= 0b10000000;
  273.             PORTF |= 0b00000010;
  274.             break;
  275.         case 17: // U2 Y7
  276.             PORTB |= 0b01000000;
  277.             PORTC |= 0b10000000;
  278.             PORTF |= 0b00000011;
  279.             break;
  280.         case 18:
  281.             PORTB |= 0b00100000;
  282.             break;
  283.     }
  284. }