logo

qmk_firmware

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

matrix.c (6509B)

    

  1. /*
  2. Copyright 2017 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. }
  130. /* Row pin configuration - diode connected
  131.  * row: 0    1    2    3    4
  132.  * pin: PD0  PD1  PD2  PD3  PD5
  133.  *
  134.  * Caps Lock uses its own pin PE2 on the column pin, row pin is grounded
  135.  */
  136. static void init_rows(void) {
  137.     DDRD  &= ~0b00101111;
  138.     PORTD &= ~0b00101111;
  140.     DDRE  &= ~0b00000100;
  141.     PORTE |=  0b00000100;
  142. }
  144. static uint8_t read_rows(uint8_t col) {
  146.     return (PIND&(1<<0) ? (1<<0) : 0)  |
  147.             (PIND&(1<<1) ? (1<<1) : 0) |
  148.             (PIND&(1<<2) ? (1<<2) : 0) |
  149.             (PIND&(1<<3) ? (1<<3) : 0) |
  150.             (PIND&(1<<5) ? (1<<4) : 0) |
  151.             (col==0 ? ((PINE&(1<<2) ? 0 : (1<<2))) : 0);
  152.     
  153. }
  155. uint8_t read_fwkey(void)
  156. {
  157.   return PINE&(1<<2) ? 0 : (1<<2);
  158. }
  160. /* Columns 0 - 15
  161.  *
  162.  * atmega32u4   decoder    pin
  163.  *    PC6       U1         E3
  164.  *    PB6       U2         E3    
  165.  *    PF0       U1, U2     A0
  166.  *    PF1       U1, U2     A1
  167.  *    PC7       U1, U2     A2
  168.  * 
  169.  * These columns uses two 74HC237D 3 to 8 bit demultiplexers.
  170.  * col / pin:    PC6  PB6  PF0  PF1  PC7 Decoder  Pin
  171.  * 0:             1    0    0    0    0    U1     Y0
  172.  * 1:             1    0    1    0    0    U1     Y1
  173.  * 2:             1    0    0    1    0    U1     Y2
  174.  * 3:             1    0    1    1    0    U1     Y3
  175.  * 4:             1    0    0    0    1    U1     Y4
  176.  * 5:             1    0    1    0    1    U1     Y5
  177.  * 6:             1    0    0    1    1    U1     Y6
  178.  * 7:             1    0    1    1    1    U1     Y7
  179.  * 8:             0    1    0    0    0    U2     Y0
  180.  * 9:             0    1    1    0    0    U2     Y1
  181.  * 10:            0    1    0    1    0    U2     Y2
  182.  * 11:            0    1    1    1    0    U2     Y3
  183.  * 12:            0    1    0    0    1    U2     Y4
  184.  * 13:            0    1    1    0    1    U2     Y5
  185.  * 14:            0    1    0    1    1    U2     Y6
  186.  *
  187.  */
  188. static void unselect_cols(void) {
  189.   DDRB  |=  0b01000000;
  190.   PORTB &= ~0b01000000;
  192.   DDRC  |=  0b11000000;
  193.   PORTC &= ~0b11000000;
  195.   DDRF  |=  0b00000011;
  196.   PORTF &= ~0b00000011;
  197. }
  199. static void select_col(uint8_t col) {
  200.  
  201.    switch (col) {
  202.         case 0:
  203.             PORTC |= 0b01000000;
  204.             break;
  205.         case 1:
  206.             PORTC |= 0b01000000;
  207.             PORTF |= 0b00000001;
  208.             break;
  209.         case 2:
  210.             PORTC |= 0b01000000;
  211.             PORTF |= 0b00000010;
  212.             break;
  213.         case 3:
  214.             PORTC |= 0b01000000;
  215.             PORTF |= 0b00000011;
  216.             break;
  217.         case 4:
  218.             PORTC |= 0b11000000;
  219.             break;
  220.         case 5:
  221.             PORTC |= 0b11000000;
  222.             PORTF |= 0b00000001;
  223.             break;
  224.         case 6:
  225.             PORTC |= 0b11000000;
  226.             PORTF |= 0b00000010;
  227.             break;
  228.         case 7:
  229.             PORTC |= 0b11000000;
  230.             PORTF |= 0b00000011;
  231.             break;
  232.         case 8:
  233.             PORTB |= 0b01000000;
  234.             break;
  235.         case 9:
  236.             PORTB |= 0b01000000;
  237.             PORTF |= 0b00000001;
  238.             break;
  239.         case 10:
  240.             PORTB |= 0b01000000;
  241.             PORTF |= 0b00000010;
  242.             break;
  243.         case 11:
  244.             PORTB |= 0b01000000;
  245.             PORTF |= 0b00000011;
  246.             break;
  247.         case 12:
  248.             PORTB |= 0b01000000;
  249.             PORTC |= 0b10000000;
  250.             break;
  251.         case 13:
  252.             PORTB |= 0b01000000;
  253.             PORTF |= 0b00000001;
  254.             PORTC |= 0b10000000;
  255.             break;
  256.         case 14:
  257.             PORTB |= 0b01000000;
  258.             PORTF |= 0b00000010;
  259.             PORTC |= 0b10000000;
  260.             break;
  261.     }
  262. }