zmk-config/config/boards/shields/leko_pona/leko_pona.keymap

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

#define L0 0
#define L1 1
#define L2 2
#define L3 3

/ {
	behaviors {
	// characters with logical inverses, assigned to shift
		iplus: i_plus_minus {
			compatible = "zmk,behavior-mod-morph";
			label = "+ -";
			#binding-cells = <0>;
			bindings = <&kp PLUS>, <&kp MINUS>;
			mods = <(MOD_LSFT)>;
		};
		iunder: i_underscore_pipe {
			compatible = "zmk,behavior-mod-morph";
			label = "_ |";
			#binding-cells = <0>;
			bindings = <&kp UNDER>, <&kp PIPE>;
			mods = <(MOD_LSFT)>;
		};
		idot: i_dot_colon {
			compatible = "zmk,behavior-mod-morph";
			label = ". :";
			#binding-cells = <0>;
			bindings = <&kp DOT>, <&kp COLON>;
			mods = <(MOD_LSFT)>;
		};
		icomma: i_comma_semicolon {
			compatible = "zmk,behavior-mod-morph";
			label = ", ;";
			#binding-cells = <0>;
			bindings = <&kp COMMA>, <&kp SEMICOLON>;
			mods = <(MOD_LSFT)>;
		};
	};
};

/ {
	keymap {
		compatible = "zmk,keymap";
		layer_0 {
			bindings = <
&kp ESC		&kp W	&kp F	&kp P		&kp B							&kp J		&kp L	&kp U	&kp Y	&kp BACKSPACE
&kp A		&kp R	&kp S	&kp T		&kp G							&kp M		&kp N	&kp E	&kp I	&kp O
&kp LCTRL	&kp X	&kp C	&kp D		&kp V							&kp K		&kp H	&kp Z	&kp Q	&kp LALT
							&kp SPACE	&kp LWIN	&mo L1		&mo L2	&kp LSHIFT	&kp RET
			>;
		};
		// numbers + symbols + non english letters
		layer_1 {
			bindings = <
&kp TAB	&none	&none	&none	&none									&none	&none		&none	&none	&kp DEL
&kp N0	&kp N1	&kp N2	&kp N3	&kp N4									&kp N5	&kp N6		&kp N7	&kp N8	&kp N9
&trans	&none	&none	&none	&none									&iunder	&iplus		&icomma	&idot	&trans
						&trans	&trans	&trans					&mo L3	&trans	&trans
			>;
		};
		// F keys + navigation
		layer_2 {
			bindings = <
&kp F1	&kp F2	&kp F3	&kp F4		&kp F5								&none	&kp HOME	&kp UP		&kp END		&kp PG_UP
&kp F6	&kp F7	&kp F8	&kp F9		&kp F10								&none	&kp LEFT	&kp DOWN	&kp RIGHT	&kp PG_DN
&trans	&kp F11	&kp F12	&kp PSCRN	&kp K_CMENU							&none	&none		&none		&none		&trans
						&trans		&trans		&mo L3			&trans	&trans	&trans
			>;
		};
		// media + bluetooth + future layer toggles
		layer_3 {
			bindings = <
&trans	&none	&none			&none		&none						&kp C_BRI_UP	&kp C_PREV	&kp C_NEXT	&kp C_VOL_UP	&trans
&none	&none	&none			&none		&none						&kp C_BRI_DN	&kp C_PLAY	&kp C_PAUSE	&kp C_VOL_DN	&none
&trans	&none	&bt BT_SEL 0	&bt BT_NXT	&bt BT_CLR					&none			&none		&none		&none			&trans
								&trans		&trans	&trans		&trans	&trans	&trans
			>;
		};
	};
};