Add nrfmicro_13_52833 support

app/boards/arm/nrfmicro/Kconfig

@@ -2,9 +2,9 @@ config BOARD_ENABLE_DCDC
 	bool "Enable DCDC mode"
 	select SOC_DCDC_NRF52X
 	default y
-	depends on (BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13)
+	depends on (BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13 || BOARD_NRFMICRO_13_52833)
 
 config BOARD_NRFMICRO_CHARGER
 	bool "Enable battery charger"
 	default y
-	depends on (BOARD_NRFMICRO_13)
+	depends on (BOARD_NRFMICRO_13 || BOARD_NRFMICRO_13_52833)

app/boards/arm/nrfmicro/Kconfig.board

@@ -14,3 +14,7 @@ config BOARD_NRFMICRO_11_FLIPPED
 config BOARD_NRFMICRO_13
 	bool "nrfmicro_13"
 	depends on SOC_NRF52840_QIAA
+
+config BOARD_NRFMICRO_13_52833
+	bool "nrfmicro_13_52833"
+	depends on SOC_NRF52833_QIAA

app/boards/arm/nrfmicro/Kconfig.defconfig

@@ -3,7 +3,7 @@
 # Copyright (c) 2020 The ZMK Contributors
 # SPDX-License-Identifier: MIT
 
-if BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13
+if BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13 || BOARD_NRFMICRO_13_52833
 
 config BOARD
 	default "nrfmicro"
@@ -27,11 +27,11 @@ config ZMK_USB
 config PINMUX
 	default y
 
-if BOARD_NRFMICRO_13
+if BOARD_NRFMICRO_13 ||	BOARD_NRFMICRO_13_52833
 
 config BOARD_NRFMICRO_CHARGER
 	default y
 
-endif # BOARD_NRFMICRO_13
+endif # BOARD_NRFMICRO_13 || BOARD_NRFMICRO_13_52833
 
-endif # BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13
+endif # BOARD_NRFMICRO_11 || BOARD_NRFMICRO_11_FLIPPED || BOARD_NRFMICRO_13 || BOARD_NRFMICRO_13_52833

app/boards/arm/nrfmicro/nrfmicro_13_52833.dts

@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/dts-v1/;
+#include <nordic/nrf52833_qiaa.dtsi>
+#include "arduino_pro_micro_pins.dtsi"
+
+/ {
+	model = "nrfmicro";
+	compatible = "joric,nrfmicro";
+
+	chosen {
+		zephyr,code-partition = &code_partition;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		blue_led: led_0 {
+			gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+			label = "Blue LED";
+		};
+	};
+
+	ext-power {
+		compatible = "zmk,ext-power-generic";
+		label = "EXT_POWER";
+		control-gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
+	};
+
+	vbatt {
+		compatible = "zmk,battery-voltage-divider";
+		label = "BATTERY";
+		io-channels = <&adc 2>;
+		output-ohms = <2000000>;
+		full-ohms = <(2000000 + 820000)>;
+	};
+};
+
+&adc {
+	status = "okay";
+};
+
+&gpiote {
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&i2c0 {
+	compatible = "nordic,nrf-twi";
+	sda-pin = <15>;
+	scl-pin = <17>;
+};
+
+&uart0 {
+	compatible = "nordic,nrf-uarte";
+	tx-pin = <6>;
+	rx-pin = <8>;
+};
+
+&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 = "softdevice";
+			reg = <0x00000000 0x00026000>;
+		};
+		code_partition: partition@26000 {
+			label = "code_partition";
+			reg = <0x00026000 0x00046000>;
+		};
+
+		/*
+		 * The flash starting at 0x0006c000 and ending at
+		 * 0x00073fff is reserved for use by the application.
+		 */
+
+		/*
+		 * Storage partition will be used by FCB/LittleFS/NVS
+		 * if enabled.
+		 */
+		storage_partition: partition@6c000 {
+			label = "storage";
+			reg = <0x0006c000 0x00008000>;
+		};
+
+		boot_partition: partition@74000 {
+			label = "adafruit_boot";
+			reg = <0x00074000 0x0000c000>;
+		};
+	};
+};

app/boards/arm/nrfmicro/nrfmicro_13_52833.yaml

@@ -0,0 +1,15 @@
+identifier: nrfmicro_13_52833
+name: nrfmicro_13_52833
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+supported:
+  - adc
+  - usb_device
+  - ble
+  - ieee802154
+  - pwm
+  - watchdog

app/boards/arm/nrfmicro/nrfmicro_13_52833_defconfig

@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: MIT
+
+CONFIG_SOC_SERIES_NRF52X=y
+CONFIG_SOC_NRF52833_QIAA=y
+CONFIG_BOARD_NRFMICRO_13_52833=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_CLOCK_CONTROL_NRF=y
+CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y

app/boards/arm/nrfmicro/pinmux.c

@@ -14,7 +14,7 @@
 static int pinmux_nrfmicro_init(const struct device *port) {
     ARG_UNUSED(port);
 
-#if CONFIG_BOARD_NRFMICRO_13
+#if (CONFIG_BOARD_NRFMICRO_13 || CONFIG_BOARD_NRFMICRO_13_52833)
     const struct device *p0 = device_get_binding("GPIO_0");
 #if CONFIG_BOARD_NRFMICRO_CHARGER
     gpio_pin_configure(p0, 5, GPIO_OUTPUT);