qmk_firmware/keyboards/ergodox_infinity/ergodox_infinity.c

#include QMK_KEYBOARD_H
#include <ch.h>
#include <hal.h>
#include <string.h>
#include "eeconfig.h"
#include "serial_link/system/serial_link.h"
#ifdef VISUALIZER_ENABLE
#    include "lcd_backlight.h"
#endif

#if (defined(LED_MATRIX_ENABLE) || defined(WPM_ENABLE))
#    include "serial_link/protocol/transport.h"

#    ifdef LED_MATRIX_ENABLE
MASTER_TO_ALL_SLAVES_OBJECT(led_matrix, led_eeconfig_t);
MASTER_TO_ALL_SLAVES_OBJECT(led_suspend_state, bool);
static led_eeconfig_t last_sent_led_matrix;
static uint16_t       led_matrix_sent_timer = 0;

void send_led_suspend_state(void) {
    if (is_serial_link_master()) {
        *begin_write_led_suspend_state() = led_matrix_get_suspend_state();
        end_write_led_suspend_state();
    }
}
#    endif

#    ifdef WPM_ENABLE
#        include "wpm.h"
MASTER_TO_ALL_SLAVES_OBJECT(current_wpm, uint8_t);
static uint8_t last_sent_wpm = 0;
#    endif

static remote_object_t *remote_objects[] = {
#    ifdef LED_MATRIX_ENABLE
    REMOTE_OBJECT(led_matrix),
    REMOTE_OBJECT(led_suspend_state),
#    endif
#    ifdef WPM_ENABLE
    REMOTE_OBJECT(current_wpm),
#    endif
};
#endif

void init_serial_link_hal(void) {
    PORTA->PCR[1] = PORTx_PCRn_PE | PORTx_PCRn_PS | PORTx_PCRn_PFE | PORTx_PCRn_MUX(2);
    PORTA->PCR[2] = PORTx_PCRn_DSE | PORTx_PCRn_SRE | PORTx_PCRn_MUX(2);
    PORTE->PCR[0] = PORTx_PCRn_PE | PORTx_PCRn_PS | PORTx_PCRn_PFE | PORTx_PCRn_MUX(3);
    PORTE->PCR[1] = PORTx_PCRn_DSE | PORTx_PCRn_SRE | PORTx_PCRn_MUX(3);
}

#define RED_PIN 1
#define GREEN_PIN 2
#define BLUE_PIN 3
#define CHANNEL_RED FTM0->CHANNEL[0]
#define CHANNEL_GREEN FTM0->CHANNEL[1]
#define CHANNEL_BLUE FTM0->CHANNEL[2]

#define RGB_PORT PORTC
#define RGB_PORT_GPIO GPIOC

// Base FTM clock selection (72 MHz system clock)
// @ 0xFFFF period, 72 MHz / (0xFFFF * 2) = Actual period
// Higher pre-scalar will use the most power (also look the best)
// Pre-scalar calculations
// 0 -      72 MHz -> 549 Hz
// 1 -      36 MHz -> 275 Hz
// 2 -      18 MHz -> 137 Hz
// 3 -       9 MHz ->  69 Hz (Slightly visible flicker)
// 4 -   4 500 kHz ->  34 Hz (Visible flickering)
// 5 -   2 250 kHz ->  17 Hz
// 6 -   1 125 kHz ->   9 Hz
// 7 - 562 500  Hz ->   4 Hz
// Using a higher pre-scalar without flicker is possible but FTM0_MOD will need to be reduced
// Which will reduce the brightness range
#define PRESCALAR_DEFINE 0
void lcd_backlight_hal_init(void) {
    // Setup Backlight
    SIM->SCGC6 |= SIM_SCGC6_FTM0;
    FTM0->CNT = 0;  // Reset counter

    // PWM Period
    // 16-bit maximum
    FTM0->MOD = 0xFFFF;

    // Set FTM to PWM output - Edge Aligned, Low-true pulses
#define CNSC_MODE FTM_SC_CPWMS | FTM_SC_PS(4) | FTM_SC_CLKS(0)
    CHANNEL_RED.CnSC   = CNSC_MODE;
    CHANNEL_GREEN.CnSC = CNSC_MODE;
    CHANNEL_BLUE.CnSC  = CNSC_MODE;

    // System clock, /w prescalar setting
    FTM0->SC = FTM_SC_CLKS(1) | FTM_SC_PS(PRESCALAR_DEFINE);

    CHANNEL_RED.CnV   = 0;
    CHANNEL_GREEN.CnV = 0;
    CHANNEL_BLUE.CnV  = 0;

    RGB_PORT_GPIO->PDDR |= (1 << RED_PIN);
    RGB_PORT_GPIO->PDDR |= (1 << GREEN_PIN);
    RGB_PORT_GPIO->PDDR |= (1 << BLUE_PIN);

#define RGB_MODE PORTx_PCRn_SRE | PORTx_PCRn_DSE | PORTx_PCRn_MUX(4)
    RGB_PORT->PCR[RED_PIN]   = RGB_MODE;
    RGB_PORT->PCR[GREEN_PIN] = RGB_MODE;
    RGB_PORT->PCR[BLUE_PIN]  = RGB_MODE;
}

static uint16_t cie_lightness(uint16_t v) {
    // The CIE 1931 formula for lightness
    // Y = luminance (output) 0-1
    // L = lightness input 0 - 100

    // Y = (L* / 902.3)           if L* <= 8
    // Y = ((L* + 16) / 116)^3    if L* > 8

    float l = 100.0f * (v / 65535.0f);
    float y = 0.0f;
    if (l <= 8.0f) {
        y = l / 902.3;
    } else {
        y = ((l + 16.0f) / 116.0f);
        y = y * y * y;
        if (y > 1.0f) {
            y = 1.0f;
        }
    }
    return y * 65535.0f;
}

void lcd_backlight_hal_color(uint16_t r, uint16_t g, uint16_t b) {
    CHANNEL_RED.CnV   = cie_lightness(r);
    CHANNEL_GREEN.CnV = cie_lightness(g);
    CHANNEL_BLUE.CnV  = cie_lightness(b);
}

__attribute__ ((weak)) void matrix_init_user(void) {}

__attribute__ ((weak)) void matrix_scan_user(void) {}


void keyboard_pre_init_kb() {
#ifdef LED_MATRIX_ENABLE
    // Turn on LED controller
    setPinOutput(B16);
    writePinHigh(B16);
#endif
    keyboard_pre_init_user();
}

void matrix_init_kb(void) {
    // put your keyboard start-up code here
    // runs once when the firmware starts up

#ifdef LED_MATRIX_ENABLE
    /*
     * Since K20x is stuck with a 32 byte EEPROM (see tmk_core/common/chibios/eeprom_teensy.c),
     * and neither led_matrix_eeconfig.speed or .flags fit in this boundary, just force their values to default on boot.
     */
#    if !defined(LED_MATRIX_STARTUP_SPD)
#        define LED_MATRIX_STARTUP_SPD UINT8_MAX / 2
#    endif
    led_matrix_set_speed(LED_MATRIX_STARTUP_SPD);
    led_matrix_set_flags(LED_FLAG_ALL);
#endif

    matrix_init_user();
    // The backlight always has to be initialized, otherwise it will stay lit
#ifndef VISUALIZER_ENABLE
    lcd_backlight_hal_init();
#endif
#if (defined(LED_MATRIX_ENABLE) || defined(WPM_ENABLE))
    add_remote_objects(remote_objects, sizeof(remote_objects) / sizeof(remote_object_t *));
#endif
}

void matrix_scan_kb(void) {
    // put your looping keyboard code here
    // runs every cycle (a lot)

#ifdef LED_MATRIX_ENABLE
    if (is_serial_link_master()) {
        if (!led_matrix_get_suspend_state()) {
            if (timer_elapsed(led_matrix_sent_timer) >= 5000 || memcmp((void *)&last_sent_led_matrix, (void *)&led_matrix_eeconfig, sizeof(last_sent_led_matrix))) {
                led_matrix_sent_timer = timer_read();
                memcpy((void *)&last_sent_led_matrix, (void *)&led_matrix_eeconfig, sizeof(last_sent_led_matrix));
                *begin_write_led_matrix() = last_sent_led_matrix;
                end_write_led_matrix();
            }
        }
    } else if (is_serial_link_connected()) {
        bool *new_led_suspend_state = read_led_suspend_state();
        if (new_led_suspend_state) {
            led_matrix_set_suspend_state(*new_led_suspend_state);
        }
        if (!led_matrix_get_suspend_state()) {
            led_eeconfig_t *new_led_matrix = read_led_matrix();
            if (new_led_matrix) {
                memcpy((void *)&led_matrix_eeconfig, (void *)new_led_matrix, sizeof(last_sent_led_matrix));
            }
        }
    }
#endif

#ifdef WPM_ENABLE
    if (is_serial_link_master()) {
        uint8_t current_wpm = get_current_wpm();
        if (current_wpm != last_sent_wpm) {
            *begin_write_current_wpm() = current_wpm;
            end_write_current_wpm();
            last_sent_wpm = current_wpm;
        }
    } else if (is_serial_link_connected()) {
        uint8_t *new_wpm = read_current_wpm();
        if (new_wpm) {
            set_current_wpm(*new_wpm);
        }
    }
#endif

    matrix_scan_user();
}

bool is_keyboard_master(void) { return is_serial_link_master(); }

bool is_keyboard_left(void) {
#if defined(EE_HANDS)
    return eeconfig_read_handedness();
#elif defined(MASTER_IS_ON_RIGHT)
    return !is_keyboard_master();
#else
    return is_keyboard_master();
#endif
}

__attribute__ ((weak)) void ergodox_board_led_on(void) {}

__attribute__ ((weak)) void ergodox_right_led_1_on(void) {}

__attribute__ ((weak)) void ergodox_right_led_2_on(void) {}

__attribute__ ((weak)) void ergodox_right_led_3_on(void) {}

__attribute__ ((weak)) void ergodox_board_led_off(void) {}

__attribute__ ((weak)) void ergodox_right_led_1_off(void) {}

__attribute__ ((weak)) void ergodox_right_led_2_off(void) {}

__attribute__ ((weak)) void ergodox_right_led_3_off(void) {}

__attribute__ ((weak)) void ergodox_right_led_1_set(uint8_t n) {}

__attribute__ ((weak)) void ergodox_right_led_2_set(uint8_t n) {}

__attribute__ ((weak)) void ergodox_right_led_3_set(uint8_t n) {}

void suspend_power_down_kb(void) {
#ifdef LED_MATRIX_ENABLE
    send_led_suspend_state();
#endif
    suspend_power_down_user();
}

void suspend_wakeup_init_kb(void) {
#ifdef LED_MATRIX_ENABLE
    send_led_suspend_state();
#endif
    suspend_wakeup_init_user();
}

#ifdef SWAP_HANDS_ENABLE
__attribute__ ((weak))
const keypos_t PROGMEM hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
    {{0,  9}, {1,  9}, {2,  9}, {3,  9}, {4,  9}},
    {{0, 10}, {1, 10}, {2, 10}, {3, 10}, {4, 10}},
    {{0, 11}, {1, 11}, {2, 11}, {3, 11}, {4, 11}},
    {{0, 12}, {1, 12}, {2, 12}, {3, 12}, {4, 12}},
    {{0, 13}, {1, 13}, {2, 13}, {3, 13}, {4, 13}},
    {{0, 14}, {1, 14}, {2, 14}, {3, 14}, {4, 14}},
    {{0, 15}, {1, 15}, {2, 15}, {3, 15}, {4, 15}},
    {{0, 16}, {1, 16}, {2, 16}, {3, 16}, {4, 16}},
    {{0, 17}, {1, 17}, {2, 17}, {3, 17}, {4, 17}},
    {{0, 0}, {1, 0}, {2, 0}, {3, 0}, {4, 0}},
    {{0, 1}, {1, 1}, {2, 1}, {3, 1}, {4, 1}},
    {{0, 2}, {1, 2}, {2, 2}, {3, 2}, {4, 2}},
    {{0, 3}, {1, 3}, {2, 3}, {3, 3}, {4, 3}},
    {{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}},
    {{0, 5}, {1, 5}, {2, 5}, {3, 5}, {4, 5}},
    {{0, 6}, {1, 6}, {2, 6}, {3, 6}, {4, 6}},
    {{0, 7}, {1, 7}, {2, 7}, {3, 7}, {4, 7}},
    {{0, 8}, {1, 8}, {2, 8}, {3, 8}, {4, 8}},
};
#endif

#ifdef LED_MATRIX_ENABLE
const is31_led g_is31_leds[DRIVER_LED_TOTAL] = {
// The numbers in the comments are the led numbers DXX on the PCB
/* Refer to IS31 manual for these locations
 *  driver
 *  |   LED address
 *  |   | */
// Left half
//      45           44           43           42           41           40           39
   { 0, C2_2 }, { 0, C1_2 }, { 0, C5_1 }, { 0, C4_1 }, { 0, C3_1 }, { 0, C2_1 }, { 0, C1_1 },
//      52           51           50           49           48           47           46
   { 0, C4_3 }, { 0, C3_3 }, { 0, C2_3 }, { 0, C1_3 }, { 0, C5_2 }, { 0, C4_2 }, { 0, C3_2 },
//      58           57           56           55           54           53
   { 0, C5_4 }, { 0, C4_4 }, { 0, C3_4 }, { 0, C2_4 }, { 0, C1_4 }, { 0, C5_3 },
//      67           66           65           64           63           62           61
   { 0, C4_6 }, { 0, C3_6 }, { 0, C2_6 }, { 0, C1_6 }, { 0, C5_5 }, { 0, C4_5 }, { 0, C3_5 },
//      76           75           74           73           72
   { 0, C4_8 }, { 0, C3_8 }, { 0, C2_8 }, { 0, C1_8 }, { 0, C4_7 },
//                                                                                    60           59
                                                                                 { 0, C2_5 }, { 0, C1_5 },
//                                                                                                 68
                                                                                              { 0, C5_6 },
//                                                                       71           70           69
                                                                    { 0, C3_7 }, { 0, C2_7 }, { 0, C1_7 },
// Right half (mirrored)
// Due to how LED_MATRIX_SPLIT is implemented, only the first half of g_is31_leds is actually used.
// Luckily, the right half has the same LED pinouts, just mirrored.
//      45           44           43           42           41           40           39
   { 0, C2_2 }, { 0, C1_2 }, { 0, C5_1 }, { 0, C4_1 }, { 0, C3_1 }, { 0, C2_1 }, { 0, C1_1 },
//      52           51           50           49           48           47           46
   { 0, C4_3 }, { 0, C3_3 }, { 0, C2_3 }, { 0, C1_3 }, { 0, C5_2 }, { 0, C4_2 }, { 0, C3_2 },
//      58           57           56           55           54           53
   { 0, C5_4 }, { 0, C4_4 }, { 0, C3_4 }, { 0, C2_4 }, { 0, C1_4 }, { 0, C5_3 },
//      67           66           65           64           63           62           61
   { 0, C4_6 }, { 0, C3_6 }, { 0, C2_6 }, { 0, C1_6 }, { 0, C5_5 }, { 0, C4_5 }, { 0, C3_5 },
//      76           75           74           73           72
   { 0, C4_8 }, { 0, C3_8 }, { 0, C2_8 }, { 0, C1_8 }, { 0, C4_7 },
//                                                                                    60           59
                                                                                 { 0, C2_5 }, { 0, C1_5 },
//                                                                                                 68
                                                                                              { 0, C5_6 },
//                                                                       71           70           69
                                                                    { 0, C3_7 }, { 0, C2_7 }, { 0, C1_7 },
};

led_config_t g_led_config = {
    {
        // Key Matrix to LED Index
        // Left half
        { NO_LED, NO_LED, NO_LED,     33,     34 },
        { NO_LED, NO_LED, NO_LED,     32,     37 },
        {      6,     13, NO_LED,     26,     36 },
        {      5,     12,     19,     25,     35 },
        {      4,     11,     18,     24,     31 },
        {      3,     10,     17,     23,     30 },
        {      2,      9,     16,     22,     29 },
        {      1,      8,     15,     21,     28 },
        {      0,      7,     14,     20,     27 },
        // Right half
        { NO_LED, NO_LED, NO_LED,     71,     72 },
        { NO_LED, NO_LED, NO_LED,     70,     75 },
        {     44,     51, NO_LED,     64,     74 },
        {     43,     50,     57,     63,     73 },
        {     42,     49,     56,     62,     69 },
        {     41,     48,     55,     61,     68 },
        {     40,     47,     54,     60,     67 },
        {     39,     46,     53,     59,     66 },
        {     38,     45,     52,     58,     65 },
    }, {
        // LED Index to Physical Position (assumes a reasonable gap between halves)
	// Left half
        {   0,  3 }, {  15,  3 }, {  27,  1 }, {  39,  0 }, {  51,  1 }, {  63,  2 }, {  75,  2 },
        {   0, 13 }, {  15, 13 }, {  27, 11 }, {  39, 10 }, {  51, 11 }, {  63, 12 }, {  78, 17 },
        {   0, 23 }, {  15, 23 }, {  27, 21 }, {  39, 20 }, {  51, 21 }, {  63, 22 },
        {   0, 33 }, {  15, 33 }, {  27, 31 }, {  39, 30 }, {  51, 31 }, {  63, 32 }, {  78, 32 },
        {   4, 43 }, {  15, 43 }, {  27, 41 }, {  39, 40 }, {  51, 41 },
                                                                                      {  89, 41 }, { 100, 46 },
                                                                                                   {  95, 55 },
                                                                         {  72, 54 }, {  83, 59 }, {  90, 64 },
        // Right half (mirrored)
        { 224,  3 }, { 209,  3 }, { 197,  1 }, { 185,  0 }, { 173,  1 }, { 161,  2 }, { 149,  2 },
        { 224, 13 }, { 209, 13 }, { 197, 11 }, { 185, 10 }, { 173, 11 }, { 161, 12 }, { 146, 17 },
        { 224, 23 }, { 209, 23 }, { 197, 21 }, { 185, 20 }, { 173, 21 }, { 161, 22 },
        { 224, 33 }, { 209, 33 }, { 197, 31 }, { 185, 30 }, { 173, 31 }, { 161, 32 }, { 146, 32 },
        { 220, 43 }, { 209, 43 }, { 197, 41 }, { 185, 40 }, { 173, 41 },
                                                                                      { 135, 41 }, { 124, 46 },
                                                                                                   { 129, 55 },
                                                                         { 152, 54 }, { 141, 59 }, { 134, 64 },
    }, {
        // LED Index to Flag
        // Left half
        1, 4, 4, 4, 4, 4, 1,
        1, 4, 4, 4, 4, 4, 1,
        1, 4, 4, 4, 4, 4,
        1, 4, 4, 4, 4, 4, 1,
        1, 1, 1, 1, 1,
                          1, 1,
                             1,
                       1, 1, 1,
        // Right half (mirrored)
        1, 4, 4, 4, 4, 4, 1,
        1, 4, 4, 4, 4, 4, 1,
        1, 4, 4, 4, 4, 4,
        1, 4, 4, 4, 4, 4, 1,
        1, 1, 1, 1, 1,
                          1, 1,
                             1,
                       1, 1, 1,
    }
};
#endif