feat(boards): Add nice!60 board

app/boards/arm/nice60/CMakeLists.txt

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+set_property(GLOBAL APPEND PROPERTY extra_post_build_commands
+  COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/../tools/uf2/utils/uf2conv.py
+  -c 
+  -b 0x1000
+  -f 0xADA52840
+  -o ${PROJECT_BINARY_DIR}/${CONFIG_KERNEL_BIN_NAME}.uf2
+  ${PROJECT_BINARY_DIR}/${CONFIG_KERNEL_BIN_NAME}.bin
+)

app/boards/arm/nice60/Kconfig

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+# Copyright (c) 2021 Nick Winans
+# SPDX-License-Identifier: MIT
+
+config BOARD_ENABLE_DCDC
+	bool "Enable DCDC mode"
+	select SOC_DCDC_NRF52X
+	default y
+	depends on BOARD_NICE60

app/boards/arm/nice60/Kconfig.board

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+# Copyright (c) 2021 Nick Winans
+# SPDX-License-Identifier: MIT
+
+config BOARD_NICE60
+	bool "nice!60"
+	depends on SOC_NRF52840_QIAA

app/boards/arm/nice60/Kconfig.defconfig

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+# Copyright (c) 2021 Nick Winans
+# SPDX-License-Identifier: MIT
+
+if BOARD_NICE60
+
+config ZMK_KEYBOARD_NAME
+	default "nice!60"
+
+if USB
+
+config USB_NRFX
+	default y
+
+config USB_DEVICE_STACK
+	default y
+
+endif # USB
+
+config BT_CTLR
+	default BT
+
+config ZMK_BLE
+	default y
+
+config ZMK_USB
+	default y
+
+config ZMK_BATTERY_VOLTAGE_DIVIDER
+	default y
+
+endif # BOARD_NICE60

app/boards/arm/nice60/README.md

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+# nice!60
+![nice!60](https://i.imgur.com/0YWv5PE.png)
+
+The nice!60 is a hotswap 60% made by Nice Keyboards. https://nicekeyboards.com/nice-60
+
+## Building nice!60 ZMK firmware
+```
+west build -p -b nice60
+```

app/boards/arm/nice60/board.cmake

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+# Copyright (c) 2021 Nick Winans
+# SPDX-License-Identifier: MIT
+
+board_runner_args(nrfjprog "--nrf-family=NRF52" "--softreset")
+include(${ZEPHYR_BASE}/boards/common/nrfjprog.board.cmake)
+include(${ZEPHYR_BASE}/boards/common/openocd-nrf5.board.cmake)

app/boards/arm/nice60/nice60.dts

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+/*
+ * Copyright (c) 2021 Nick Winans
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/dts-v1/;
+#include <nordic/nrf52840_qiaa.dtsi>
+#include <dt-bindings/zmk/matrix_transform.h>
+
+/ {
+	model = "nice!60";
+	compatible = "nice,60";
+
+	chosen {
+		zephyr,code-partition = &code_partition;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+		zmk,kscan = &kscan0;
+		zmk,matrix_transform = &default_transform;
+		zmk,underglow = &led_strip;
+	};
+
+	default_transform: keymap_transform_0 {
+		compatible = "zmk,matrix-transform";
+		columns = <14>;
+		rows = <5>;
+		map = <
+RC(0,0) RC(0,1) RC(0,2) RC(0,3) RC(0,4) RC(0,5) RC(0,6) RC(0,7) RC(0,8) RC(0,9) RC(0,10) RC(0,11) RC(0,12)     RC(0,13)
+RC(1,0)   RC(1,1) RC(1,2) RC(1,3) RC(1,4) RC(1,5) RC(1,6) RC(1,7) RC(1,8) RC(1,9) RC(1,10) RC(1,11) RC(1,12)   RC(1,13)
+RC(2,0)     RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5) RC(2,6) RC(2,7) RC(2,8) RC(2,9) RC(2,10) RC(2,11)          RC(2,13)
+RC(3,0)       RC(3,1) RC(3,2) RC(3,3) RC(3,4) RC(3,5) RC(3,6) RC(3,7) RC(3,8) RC(3,9)    RC(3,10)              RC(3,13)
+RC(4,0)   RC(4,1)   RC(4,2)                      RC(4,5)                       RC(4,9)   RC(4,10)   RC(4,11)   RC(4,13)
+		>;
+	};
+
+	kscan0: kscan {
+		compatible = "zmk,kscan-gpio-matrix";
+		label = "KSCAN";
+
+		diode-direction = "col2row";
+		row-gpios
+			= <&gpio1 14 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&gpio1 13 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&gpio1 12 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&gpio1 11 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			, <&gpio1 10 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+			;
+		col-gpios
+			= <&gpio1 15 GPIO_ACTIVE_HIGH>
+			, <&gpio0 29 GPIO_ACTIVE_HIGH>
+			, <&gpio0 31 GPIO_ACTIVE_HIGH>
+			, <&gpio0 30 GPIO_ACTIVE_HIGH>
+			, <&gpio0 28 GPIO_ACTIVE_HIGH>
+			, <&gpio0 2  GPIO_ACTIVE_HIGH>
+			, <&gpio0 3  GPIO_ACTIVE_HIGH>
+			, <&gpio1 3  GPIO_ACTIVE_HIGH>
+			, <&gpio1 7  GPIO_ACTIVE_HIGH>
+			, <&gpio1 4  GPIO_ACTIVE_HIGH>
+			, <&gpio1 6  GPIO_ACTIVE_HIGH>
+			, <&gpio1 5  GPIO_ACTIVE_HIGH>
+			, <&gpio1 1  GPIO_ACTIVE_HIGH>
+			, <&gpio1 2  GPIO_ACTIVE_HIGH>
+			;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		blue_led: led_0 {
+			gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
+			label = "Blue LED";
+		};
+	};
+
+	ext-power {
+		compatible = "zmk,ext-power-generic";
+		label = "EXT_POWER";
+		control-gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
+	};
+
+	vbatt {
+		compatible = "zmk,battery-voltage-divider";
+		label = "BATTERY";
+		io-channels = <&adc 2>;
+		output-ohms = <2000000>;
+		full-ohms = <(2000000 + 806000)>;
+	};
+};
+
+&adc {
+	status = "okay";
+};
+
+&gpiote {
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&spi0 {
+	compatible = "nordic,nrf-spim";
+	/* Cannot be used together with i2c0. */
+	status = "okay";
+	sck-pin = <12>;
+	mosi-pin = <27>;
+	miso-pin = <13>;
+
+	led_strip: ws2812@0 {
+		compatible = "worldsemi,ws2812-spi";
+		label = "WS2812";
+
+		/* SPI */
+		reg = <0>; /* ignored, but necessary for SPI bindings */
+		spi-max-frequency = <4000000>;
+
+		/* WS2812 */
+		chain-length = <12>; /* LED strip length */
+		spi-one-frame = <0x70>;
+		spi-zero-frame = <0x40>;
+	};
+};
+
+&usbd {
+	status = "okay";
+};
+
+&flash0 {
+	/*
+	 * For more information, see:
+	 * http://docs.zephyrproject.org/latest/devices/dts/flash_partitions.html
+	 */
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		sd_partition: partition@0 {
+			label = "mbr";
+			reg = <0x00000000 0x00001000>;
+		};
+
+		code_partition: partition@1000 {
+			label = "code_partition";
+			reg = <0x00001000 0x000d3000>;
+		};
+
+		/*
+		 * The flash starting at 0x000d4000 and ending at
+		 * 0x000f3fff is reserved for use by the application.
+		 */
+
+		/*
+		 * Storage partition will be used by FCB/LittleFS/NVS
+		 * if enabled.
+		 */
+		storage_partition: partition@d4000 {
+			label = "storage";
+			reg = <0x000d4000 0x00020000>;
+		};
+
+		boot_partition: partition@f4000 {
+			label = "adafruit_boot";
+			reg = <0x000f4000 0x0000c000>;
+		};
+	};
+};

app/boards/arm/nice60/nice60.keymap

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+/*
+ * Copyright (c) 2021 Nick Winans
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/rgb.h>
+#include <dt-bindings/zmk/bt.h>
+
+/ {
+	keymap {
+		compatible = "zmk,keymap";
+		
+		default_layer {
+// ------------------------------------------------------------------------------------------
+// | ESC |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |  0  |  -  |  =  |   BKSP   |
+// | TAB  |  Q  |  W  |  E  |  R  |  T  |  Y  |  U  |  I  |  O  |  P  |  [  |  ]  |   "|"   |
+// | CAPS  |  A  |  S  |  D  |  F  |  G  |  H  |  J  |  K  |  L  |  ;  |  '  |     ENTER    |
+// |  SHIFT  |  Z  |  X  |  C  |  V  |  B  |  N  |  M  |  ,  |  .  |  /  |      SHIFT       |
+// |  CTL  |  WIN  |  ALT  |            SPACE              |  ALT  |  WIN  |  MO(1) |  CTL  |
+// ------------------------------------------------------------------------------------------
+			bindings = <
+	&gresc  &kp N1 &kp N2 &kp N3 &kp N4 &kp N5 &kp N6 &kp N7 &kp N8 &kp N9 &kp N0 &kp MINUS &kp EQUAL  &kp BSPC
+	&kp TAB  &kp Q  &kp W  &kp E  &kp R  &kp T  &kp Y  &kp U  &kp I  &kp O  &kp P  &kp LBKT  &kp RBKT  &kp BSLH
+	&kp CLCK  &kp A  &kp S  &kp D  &kp F  &kp G  &kp H  &kp J  &kp K  &kp L  &kp SEMI &kp SQT           &kp RET
+	&kp LSHFT   &kp Z  &kp X  &kp C  &kp V  &kp B  &kp N  &kp M  &kp COMMA &kp DOT &kp FSLH           &kp RSHFT
+	&kp LCTRL &kp LGUI &kp LALT             &kp SPACE                     &kp RALT  &kp RGUI  &mo 1   &kp RCTRL
+			>;
+		};
+
+		rgb_layer {
+// ------------------------------------------------------------------------------------------------
+// | BT CLR | F1  | F2  | F3  | F4  | F5  | F6  | F7  | F8  | F9  | F10  | F11 | F12 | EFFECT REV |
+// |  BT 1   |   |  UP |   | HUEUP | SATUP | BRIUP | SPDUP |   |     |    |     |     |           |
+// |   BT 2   | LT |  DN  | RT | HUEDN | SATDN | BRIDN | SPDDN |   |     |   |     |  EFFECT FORW |
+// |    BT 3     |     |      |      |     |     |     |     |     |     |     |                  |
+// |   BT 4  |      |      |             TOG RGB                | PRT SCR |       |       |  DEL  |
+// ------------------------------------------------------------------------------------------------
+			bindings = <
+	&bt BT_CLR   &kp F1    &kp F2    &kp F3  &kp F4           &kp F5          &kp F6          &kp F7          &kp F8   &kp F9   &kp F10  &kp F11 &kp F12  &rgb_ug RGB_EFR
+	&bt BT_SEL 0  &trans    &kp UP    &trans  &rgb_ug RGB_HUI  &rgb_ug RGB_SAI &rgb_ug RGB_BRI &rgb_ug RGB_SPI  &trans   &trans   &trans   &trans  &trans          &trans 
+	&bt BT_SEL 1   &kp LEFT  &kp DOWN  &kp RIGHT &rgb_ug RGB_HUD &rgb_ug RGB_SAD &rgb_ug RGB_BRD &rgb_ug RGB_SPD &trans   &trans   &trans   &trans        &rgb_ug RGB_EFF
+	&bt BT_SEL 2    &trans    &trans    &trans   &trans          &trans          &trans          &trans          &trans   &trans   &trans                          &trans
+	&bt BT_SEL 3  &trans   &trans                            &rgb_ug RGB_TOG                                      &kp PSCRN      &trans      &trans               &kp DEL
+			>;
+		};
+	};
+};

app/boards/arm/nice60/nice60.yaml

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+identifier: nice60
+name: nice!60
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+supported:
+  - adc
+  - usb_device
+  - ble
+  - ieee802154
+  - pwm
+  - watchdog

app/boards/arm/nice60/nice60_defconfig

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+# Copyright (c) 2021 Nick Winans
+# SPDX-License-Identifier: MIT
+
+CONFIG_SOC_SERIES_NRF52X=y
+CONFIG_SOC_NRF52840_QIAA=y
+CONFIG_BOARD_NICE60=y
+
+# Enable MPU
+CONFIG_ARM_MPU=y
+
+# enable GPIO
+CONFIG_GPIO=y
+
+CONFIG_USE_DT_CODE_PARTITION=y
+
+CONFIG_MPU_ALLOW_FLASH_WRITE=y
+CONFIG_NVS=y
+CONFIG_SETTINGS_NVS=y
+CONFIG_FLASH=y
+CONFIG_FLASH_PAGE_LAYOUT=y
+CONFIG_FLASH_MAP=y
+
+CONFIG_ZMK_RGB_UNDERGLOW=y
+CONFIG_WS2812_STRIP=y
+
+CONFIG_ZMK_RGB_UNDERGLOW_HUE_START=160
+CONFIG_ZMK_RGB_UNDERGLOW_EFF_START=3