cradio.keymap

#include <behaviors.dtsi>
#include <dt-bindings/zmk/keys.h>
#include <dt-bindings/zmk/bt.h>

// LAYERS
#define COL 0
#define NAV 1
#define NUM 2

// MACROS
#define U_UNDO  LG(Z)
#define U_CUT   LG(X)
#define U_COPY  LG(C)
#define U_PSTE  LG(V)
#define U_REDO  LS(LG(Z))
#define U_CLIP  LC(LG(C))
#define U_SHOT  LS(LG(N4))

// CONFIGURATION
#define COMBO(NAME, KEYPOS) \
  combo_##NAME { \
      timeout-ms = <40>; \
      key-positions = <KEYPOS>; \
      bindings = <&kp NAME>; \
  };

&lt {
  flavor = "tap-preferred";
  tapping-term-ms = <200>;
  quick-tap-ms = <0>;
};

&caps_word {
  continue-list = <UNDERSCORE MINUS>;
};

// KEYMAP
/ {
  behaviors {
    hm: homerow_mods {
      compatible = "zmk,behavior-hold-tap";
      label = "HOMEROW_MODS";
      #binding-cells = <2>;
      tapping-term-ms = <200>;
      quick_tap_ms = <0>;
      flavor = "tap-preferred";
      bindings = <&kp>, <&kp>;
    };

    td_TAB: tap_dance_tab {
          compatible = "zmk,behavior-tap-dance";
          #binding-cells = <0>;
          tapping-term-ms = <180>;
          bindings = <&kp TAB>, <&kp ESC>;
      };
  
    td_RET: tap_dance_ret {
          compatible = "zmk,behavior-tap-dance";
          #binding-cells = <0>;
          tapping-term-ms = <170>;
          bindings = <&kp RET>, <&kp DEL>;
      };
  };
  
  combos {
    compatible = "zmk,combos";
    
    // Left-hand combos
    COMBO(AT_SIGN, 1 2)
    COMBO(LEFT_BRACE, 2 3)
    COMBO(EXCLAMATION, 1 11)
    COMBO(HASH, 2 12)
    COMBO(DOLLAR, 3 13)
    COMBO(GRAVE, 10 11)
    COMBO(COLON, 11 12)
    COMBO(LEFT_PARENTHESIS, 12 13)
    COMBO(PERCENT, 11 21)
    COMBO(CARET, 12 22)
    COMBO(AMPERSAND, 13 23)
    COMBO(TILDE, 20 21)
    COMBO(SEMICOLON, 21 22)
    COMBO(LEFT_BRACKET, 22 23) 

    // Right-hand combos
    COMBO(RIGHT_BRACE, 6 7)
    COMBO(DOUBLE_QUOTES, 7 8)
    COMBO(EQUAL, 6 16)
    COMBO(PIPE, 7 17)
    COMBO(BACKSLASH, 8 18)
    COMBO(RIGHT_PARENTHESIS, 16 17)
    COMBO(MINUS, 17 18)
    COMBO(KP_PLUS, 18 19)
    COMBO(ASTERISK, 16 26)
    COMBO(LESS_THAN, 17 27)
    COMBO(GREATER_THAN, 18 28)
    COMBO(RIGHT_BRACKET, 26 27)
    COMBO(UNDERSCORE, 27 28)
    COMBO(QUESTION, 28 29)
  };

  keymap {
    compatible = "zmk,keymap";

    col_layer {
      label = "COLMAK";
      bindings = <
        &kp Q       &kp W       &kp F       &kp P         &kp B       &kp J   &kp L        &kp U      &kp Y       &kp SQT
        &hm LSHFT A &hm LCTRL R &hm LALT S  &hm LGUI T    &kp G       &kp M   &hm LGUI N   &hm LALT E &hm LCTRL I &hm LSHFT O
        &kp Z       &kp X       &kp C       &kp D         &kp V       &kp K   &kp H        &kp COMMA  &kp DOT     &kp FSLH
                                            &lt NAV SPACE &td_TAB     &td_RET &lt NUM BSPC
      >;
    };

    nav_layer {
      label = "ARROWS";
      bindings = <
        &kp LG(N1) &kp LG(N2) &kp LG(N3) &kp LG(N4) &kp LG(N5)     &caps_word &kp HOME   &kp PG_DN    &kp PG_UP    &kp END
        &kp LSHFT  &kp LCTRL  &kp LALT   &kp LGUI   &kp U_CLIP     &kp U_SHOT &kp LEFT   &kp DOWN     &kp UP       &kp RIGHT
        &kp U_UNDO &kp U_CUT  &kp U_COPY &kp U_PSTE &kp U_REDO     &kp C_PP   &kp C_PREV &kp C_VOL_DN &kp C_VOL_UP &kp C_NEXT
                                         &none      &none          &td_RET    &kp BSPC
      >;
    };

    num_layer {
      label = "NUMPAD";
      bindings = <
        &bt BT_SEL 0 &kp F7 &kp F8  &kp F9    &kp F10     &kp EQUAL  &kp N7 &kp N8 &kp N9 &kp PLUS
        &bt BT_SEL 1 &kp F4 &kp F5  &kp F6    &kp F11     &kp ASTRK  &kp N4 &kp N5 &kp N6 &kp MINUS
        &bt BT_SEL 2 &kp F1 &kp F2  &kp F3    &kp F12     &kp N0     &kp N1 &kp N2 &kp N3 &kp FSLH
                                    &kp SPACE &td_TAB     &bt BT_CLR &none
      >;
    };
  };
};