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qmk_firmware

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

matrix.c (6574B)

    

  1. // Copyright 2023 ZSA Technology Labs, Inc <@zsa>
  2. // Copyright 2023 Christopher Courtney, aka Drashna Jael're  (@drashna) <drashna@live.com>
  3. // SPDX-License-Identifier: GPL-2.0-or-later
  5. #include <stdint.h>
  6. #include "voyager.h"
  7. #include "mcp23018.h"
  9. #pragma GCC push_options
  10. #pragma GCC optimize("-O3")
  12. extern matrix_row_t matrix[MATRIX_ROWS];     // debounced values
  13. extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
  14. static matrix_row_t raw_matrix_right[MATRIX_COLS];
  16. #define MCP_ROWS_PER_HAND (MATRIX_ROWS / 2)
  17. #ifndef VOYAGER_I2C_TIMEOUT
  18. #    define VOYAGER_I2C_TIMEOUT 100
  19. #endif
  20. // Delay between each i2c io expander ops (in MCU cycles)
  21. #ifndef IO_EXPANDER_OP_DELAY
  22. #    define IO_EXPANDER_OP_DELAY 500
  23. #endif
  25. extern bool mcp23018_leds[2];
  26. extern bool is_launching;
  28. static uint16_t mcp23018_reset_loop;
  29. uint8_t         mcp23018_errors;
  31. bool io_expander_ready(void) {
  32.     uint8_t tx;
  33.     return mcp23018_readPins(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTA, &tx);
  34. }
  36. void matrix_init_custom(void) {
  37.     // outputs
  38.     gpio_set_pin_output(B10);
  39.     gpio_set_pin_output(B11);
  40.     gpio_set_pin_output(B12);
  41.     gpio_set_pin_output(B13);
  42.     gpio_set_pin_output(B14);
  43.     gpio_set_pin_output(B15);
  45.     // inputs
  46.     gpio_set_pin_input_low(A0);
  47.     gpio_set_pin_input_low(A1);
  48.     gpio_set_pin_input_low(A2);
  49.     gpio_set_pin_input_low(A3);
  50.     gpio_set_pin_input_low(A6);
  51.     gpio_set_pin_input_low(A7);
  52.     gpio_set_pin_input_low(B0);
  54.     mcp23018_init(MCP23018_DEFAULT_ADDRESS);
  55.     mcp23018_errors += !mcp23018_set_config(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTA, 0b00000000);
  56.     mcp23018_errors += !mcp23018_set_config(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTB, 0b00111111);
  58.     if (!mcp23018_errors) {
  59.         is_launching = true;
  60.     }
  61. }
  63. bool matrix_scan_custom(matrix_row_t current_matrix[]) {
  64.     bool changed = false;
  65.     // Attempt to reset the mcp23018 if it's not initialized
  66.     if (mcp23018_errors) {
  67.         if (++mcp23018_reset_loop > 0x1FFF) {
  68.             if (io_expander_ready()) {
  69.                 // If we managed to initialize the mcp23018 - we need to reinitialize the matrix / layer state. During an electric discharge the i2c peripherals might be in a weird state. Giving a delay and resetting the MCU allows to recover from this.
  70.                 wait_ms(200);
  71.                 mcu_reset();
  72.             }
  73.         }
  74.     }
  76.     // Scanning left and right side of the keyboard for key presses.
  77.     // Left side is scanned by reading the gpio pins directly, right side is scanned by reading the mcp23018 registers.
  79.     matrix_row_t data = 0;
  80.     for (uint8_t row = 0; row <= MCP_ROWS_PER_HAND; row++) {
  81.         // strobe row
  82.         switch (row) {
  83.             case 0:
  84.                 gpio_write_pin_high(B10);
  85.                 break;
  86.             case 1:
  87.                 gpio_write_pin_high(B11);
  88.                 break;
  89.             case 2:
  90.                 gpio_write_pin_high(B12);
  91.                 break;
  92.             case 3:
  93.                 gpio_write_pin_high(B13);
  94.                 break;
  95.             case 4:
  96.                 gpio_write_pin_high(B14);
  97.                 break;
  98.             case 5:
  99.                 gpio_write_pin_high(B15);
  100.                 break;
  101.             case 6:
  102.                 break; // Left hand has 6 rows
  103.         }
  105.         // Selecting the row on the right side of the keyboard.
  106.         if (!mcp23018_errors) {
  107.             // select row
  108.             mcp23018_errors += !mcp23018_set_output(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTA, 0b01111111 & ~(1 << (row)));
  109.             mcp23018_errors += !mcp23018_set_output(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTB, ((uint8_t)!mcp23018_leds[1] << 6) | ((uint8_t)!mcp23018_leds[0] << 7));
  110.         }
  111.         // Reading the left side of the keyboard.
  112.         if (row < MCP_ROWS_PER_HAND) {
  113.             // i2c comm incur enough wait time
  114.             if (mcp23018_errors) {
  115.                 // need wait to settle pin state
  116.                 matrix_io_delay();
  117.             }
  118.             // read col data
  119.             data = ((gpio_read_pin(A0) << 0) | (gpio_read_pin(A1) << 1) | (gpio_read_pin(A2) << 2) | (gpio_read_pin(A3) << 3) | (gpio_read_pin(A6) << 4) | (gpio_read_pin(A7) << 5) | (gpio_read_pin(B0) << 6));
  120.             // unstrobe  row
  121.             switch (row) {
  122.                 case 0:
  123.                     gpio_write_pin_low(B10);
  124.                     break;
  125.                 case 1:
  126.                     gpio_write_pin_low(B11);
  127.                     break;
  128.                 case 2:
  129.                     gpio_write_pin_low(B12);
  130.                     break;
  131.                 case 3:
  132.                     gpio_write_pin_low(B13);
  133.                     break;
  134.                 case 4:
  135.                     gpio_write_pin_low(B14);
  136.                     break;
  137.                 case 5:
  138.                     gpio_write_pin_low(B15);
  139.                     break;
  140.                 case 6:
  141.                     break;
  142.             }
  144.             if (current_matrix[row] != data) {
  145.                 current_matrix[row] = data;
  146.                 changed             = true;
  147.             }
  148.         }
  150.         // Reading the right side of the keyboard.
  151.         if (!mcp23018_errors) {
  152.             for (uint16_t i = 0; i < IO_EXPANDER_OP_DELAY; i++) {
  153.                 __asm__("nop");
  154.             }
  155.             uint8_t rx;
  156.             mcp23018_errors += !mcp23018_readPins(MCP23018_DEFAULT_ADDRESS, mcp23018_PORTB, &rx);
  157.             data = ~(rx & 0b00111111);
  158.             for (uint16_t i = 0; i < IO_EXPANDER_OP_DELAY; i++) {
  159.                 __asm__("nop");
  160.             }
  161.         } else {
  162.             data = 0;
  163.         }
  165.         if (raw_matrix_right[row] != data) {
  166.             raw_matrix_right[row] = data;
  167.             changed               = true;
  168.         }
  169.     }
  171.     for (uint8_t row = 0; row < MCP_ROWS_PER_HAND; row++) {
  172.         current_matrix[11 - row] = 0;
  173.         for (uint8_t col = 0; col < MATRIX_COLS; col++) {
  174.             current_matrix[11 - row] |= ((raw_matrix_right[6 - col] & (1 << row) ? 1 : 0) << col);
  175.         }
  176.     }
  177.     return changed;
  178. }
  180. // DO NOT REMOVE
  181. // Needed for proper wake/sleep
  182. void matrix_power_up(void) {
  183.     bool temp_launching = is_launching;
  185.     matrix_init_custom();
  187.     is_launching = temp_launching;
  188.     if (!temp_launching) {
  189.         STATUS_LED_1(false);
  190.         STATUS_LED_2(false);
  191.         STATUS_LED_3(false);
  192.         STATUS_LED_4(false);
  193.     }
  195.     // initialize matrix state: all keys off
  196.     for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
  197.         matrix[i] = 0;
  198.     }
  199. }
  201. bool is_transport_connected(void) {
  202.     return (bool)(mcp23018_errors == 0);
  203. }
  204. #pragma GCC pop_options