[Keymap] Update Helix:five_rows OLED code (#14427)
* Stop using snprintf() in keymaps/five_rows/oled_display.c. The binary size becomes 1350 bytes smaller. make HELIX=verbose,core-oled helix/rev2/sc:five_rows (104 bytes over) -> (95%, 1256 bytes free) make helix/rev3_5rows:five_rows (528 bytes over) -> (97%, 830 bytes free) * add matrix scan rate display to OLED for keymaps/five_rows * add matrix_output_unselect_delay.c to helix keymaps/five_rows * add GPLv2 header * apply review comment
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					 8 changed files with 256 additions and 28 deletions
				
			
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			@ -29,7 +29,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
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   see tmk_core/common/action_tapping.c */
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#undef OLED_UPDATE_INTERVAL
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#define OLED_UPDATE_INTERVAL 50
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#ifdef DEBUG_MATRIX_SCAN_RATE
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#    define OLED_UPDATE_INTERVAL 500
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#else
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#    define OLED_UPDATE_INTERVAL 50
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#endif
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// place overrides here
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			@ -0,0 +1,31 @@
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/* Copyright 2021 mtei
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#include QMK_KEYBOARD_H
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void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
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     /* If none of the keys are pressed,
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      *  there is no need to wait for time for the next line. */
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     if (key_pressed) {
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#    ifdef MATRIX_IO_DELAY
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#        if MATRIX_IO_DELAY > 0
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         wait_us(MATRIX_IO_DELAY);
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#        endif
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#    else
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         wait_us(30);
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#    endif
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     }
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}
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			@ -64,6 +64,55 @@ void matrix_update(struct CharacterMatrix *dest,
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}
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#    endif
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static char *sprint_decimal(char *buf, int data) {
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    if (data > 9) {
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        buf = sprint_decimal(buf, data/10);
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    }
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    *buf++ = "0123456789"[data%10];
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    *buf = '\0';
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    return buf;
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}
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static char *sprint_hex(char *buf, uint32_t data) {
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    if (data > 0xf) {
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        buf = sprint_hex(buf, data/0x10);
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    }
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    *buf++ = "0123456789abcdef"[data & 0xf];
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    *buf = '\0';
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    return buf;
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}
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char *sprints(char *buf, char *src) {
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    while (*src) {
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        *buf++ = *src++;
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    }
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    *buf = '\0';
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    return buf;
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}
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char *sprintx(char *buf, char *leadstr, uint32_t data) {
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    buf = sprints(buf, leadstr);
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    buf = sprint_hex(buf, data);
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    return buf;
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}
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char *sprintd(char *buf, char *leadstr, int data) {
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    buf = sprints(buf, leadstr);
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    buf = sprint_decimal(buf, data);
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    return buf;
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}
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char *sprint2d(char *buf, char *leadstr, int data) {
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    buf = sprints(buf, leadstr);
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    if (data > 99) {
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        return sprint_decimal(buf, data);
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    }
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    if (data < 10) {
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        *buf++ = ' ';
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    }
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    return sprint_decimal(buf, data);
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}
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#    ifdef SSD1306OLED
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static void render_logo(struct CharacterMatrix *matrix) {
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#    else
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			@ -76,20 +125,35 @@ static void render_logo(void) {
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        0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,0xd0,0xd1,0xd2,0xd3,0xd4,
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        0};
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    oled_write_P(helix_logo, false);
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#    ifdef RGBLIGHT_ENABLE
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    char buf[30];
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    char *bufp;
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#    ifdef RGBLIGHT_ENABLE
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    if (RGBLIGHT_MODES > 1 && rgblight_is_enabled()) {
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        snprintf(buf, sizeof(buf), " LED %2d: %d,%d,%d ",
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                 rgblight_get_mode(),
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                 rgblight_get_hue()/RGBLIGHT_HUE_STEP,
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                 rgblight_get_sat()/RGBLIGHT_SAT_STEP,
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                 rgblight_get_val()/RGBLIGHT_VAL_STEP);
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        bufp = sprint2d(buf, " LED ", rgblight_get_mode());
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#        ifdef DEBUG_MATRIX_SCAN_RATE
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        bufp = sprintd(bufp, "  scan:", get_matrix_scan_rate());
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#        else
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        bufp = sprintd(bufp, ": ", rgblight_get_hue()/RGBLIGHT_HUE_STEP);
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        bufp = sprintd(bufp, ",", rgblight_get_sat()/RGBLIGHT_SAT_STEP);
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        bufp = sprintd(bufp, ",", rgblight_get_val()/RGBLIGHT_VAL_STEP);
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        bufp = sprints(bufp, " ");
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#        endif
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        oled_write(buf, false);
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#        ifndef SSD1306OLED
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    } else {
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#        ifdef DEBUG_MATRIX_SCAN_RATE
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        bufp = sprintd(buf, "  scan:", get_matrix_scan_rate());
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        oled_write(buf, false);
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#        endif
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        oled_write_P( PSTR("\n"), false);
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#        endif
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    }
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#    else
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#        ifdef DEBUG_MATRIX_SCAN_RATE
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    bufp = sprintd(buf, " scan:", get_matrix_scan_rate());
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    bufp = sprints(bufp, " ");
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    oled_write(buf, false);
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#        endif
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#    endif
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}
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			@ -142,6 +206,11 @@ void render_status(void) {
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    int name_num;
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    uint32_t lstate;
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    oled_write_P(layer_names[current_default_layer], false);
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#    ifdef DEBUG_MATRIX_SCAN_RATE
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    char buf[16];
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    sprintd(buf, " scan:", get_matrix_scan_rate());
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    oled_write(buf, false);
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#    endif
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    oled_write_P(PSTR("\n"), false);
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    for (lstate = layer_state, name_num = 0;
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         lstate && name_num < sizeof(layer_names)/sizeof(char *);
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			@ -152,14 +221,13 @@ void render_status(void) {
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            }
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        }
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    }
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    oled_write_P(PSTR("\n"), false);
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    // Host Keyboard LED Status
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    char led[40];
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    snprintf(led, sizeof(led), "\n%s  %s  %s",
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             (host_keyboard_leds() & (1<<USB_LED_NUM_LOCK)) ? "NUMLOCK" : "       ",
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             (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) ? "CAPS" : "    ",
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             (host_keyboard_leds() & (1<<USB_LED_SCROLL_LOCK)) ? "SCLK" : "    ");
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    oled_write(led, false);
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    led_t led_state = host_keyboard_led_state();
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    oled_write_P(led_state.num_lock ? PSTR("NUMLOCK  ") : PSTR("         "), false);
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    oled_write_P(led_state.caps_lock ? PSTR("CAPS  ") : PSTR("      "), false);
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    oled_write_P(led_state.scroll_lock ? PSTR("SCLK  ") : PSTR("      "), false);
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}
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#    ifdef SSD1306OLED
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			@ -14,9 +14,11 @@ ENCODER_ENABLE = no
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LTO_ENABLE = no  # if firmware size over limit, try this option
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LED_ANIMATIONS = yes
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CUSTOM_DELAY = yes
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ifneq ($(strip $(HELIX)),)
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  define KEYMAP_OPTION_PARSE
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    # parse 'dispoff', 'consle', 'back', 'oled', 'no-ani', 'mini-ani', 'lto', 'no-lto', 'no-enc', 'scan'
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    # parse 'dispoff', 'consle', 'back', 'oled', 'no-ani', 'mini-ani', 'lto', 'no-lto', 'no-enc', 'scan', 'scan-api'
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    $(if $(SHOW_PARCE),$(info parse .$1.))  #debug
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    ifeq ($(strip $1),dispoff)
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        OLED_ENABLE = no
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			@ -63,6 +65,11 @@ ifneq ($(strip $(HELIX)),)
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        # see docs/newbs_testing_debugging.md
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        DEBUG_MATRIX_SCAN_RATE_ENABLE = yes
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    endif
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    ifeq ($(strip $1),scan-api)
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        # use DEBUG_MATRIX_SCAN_RATE
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        # see docs/newbs_testing_debugging.md
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        DEBUG_MATRIX_SCAN_RATE_ENABLE = api
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    endif
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  endef # end of KEYMAP_OPTION_PARSE
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  COMMA=,
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			@ -80,6 +87,10 @@ ifeq ($(strip $(LED_ANIMATIONS)), mini)
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    OPT_DEFS += -DLED_ANIMATIONS_LEVEL=1
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endif
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ifeq ($(strip $(CUSTOM_DELAY)),yes)
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    SRC += matrix_output_unselect_delay.c
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endif
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ifeq ($(strip $(DEBUG_CONFIG)), yes)
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    OPT_DEFS += -DDEBUG_CONFIG
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endif
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