boards: arm: Add support for the VBLUno52 board

+ The VBLUno52 board
    nRF52832 ARM Cortex-M4F processor
    Bluetooth Low Energy 5.0
    DAPLink interface
    UNO pinout
    4 power

+ The following samples were tested:
    hello_world
    basic/button
    basic/blinky
    bluetooth/peripheral_hr
    bluetooth/beacon

Signed-off-by: Nam Do <robotden@gmail.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

boards/arm/nrf52_vbluno52/Kconfig

@@ -0,0 +1,13 @@
+# Kconfig - nRF52 VBLUno52 board configuration
+#
+# Copyright (c) 2017 VNG IoT Lab
+#
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_NRF52_VBLUNO52
+
+config  GPIO_AS_PINRESET
+	bool "GPIO as pin reset (reset button)"
+	default y
+
+endif # BOARD_NRF52_VBLUNO52

boards/arm/nrf52_vbluno52/Kconfig.board

@@ -0,0 +1,9 @@
+# Kconfig - nRF52 VBLUno52 board configuration
+#
+# Copyright (c) 2017 VNG IoT Lab
+#
+# SPDX-License-Identifier: Apache-2.0
+
+config  BOARD_NRF52_VBLUNO52
+	bool "nRF52 VBLUno52"
+	depends on SOC_NRF52832_QFAA

boards/arm/nrf52_vbluno52/Kconfig.defconfig

@@ -0,0 +1,62 @@
+# Kconfig - nRF52 VBLUno52 board configuration
+#
+# Copyright (c) 2017 VNG IoT Lab
+#
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_NRF52_VBLUNO52
+
+config BOARD
+	default nrf52_vbluno52
+
+if GPIO_NRF5
+
+config GPIO_NRF5_P0
+	default y
+
+endif # GPIO_NRF5
+
+if UART_NRF5
+
+config UART_NRF5_GPIO_TX_PIN
+	default 6
+
+config UART_NRF5_GPIO_RX_PIN
+	default 8
+
+config UART_NRF5_GPIO_RTS_PIN
+	default 5
+
+config UART_NRF5_GPIO_CTS_PIN
+	default 7
+
+endif # UART_NRF5
+
+if I2C
+
+config I2C_NRF5
+	def_bool y
+
+config I2C_0
+	default y
+
+config I2C_0_IRQ_PRI
+	default 1
+
+endif # I2C
+
+if I2C_NRF5
+
+config I2C_NRF5_GPIO_SCL_PIN
+	default 27
+
+config I2C_NRF5_GPIO_SCA_PIN
+	default 26
+
+config I2C_0_DEFAULT_CFG
+	# Standard speed, master
+	default 0x11
+
+endif # I2C_NRF5
+
+endif # BOARD_NRF52_VBLUNO52

boards/arm/nrf52_vbluno52/Makefile

@@ -0,0 +1,2 @@
+# No C files (yet)
+obj- += dummy.o

boards/arm/nrf52_vbluno52/Makefile.board

@@ -0,0 +1,6 @@
+FLASH_SCRIPT = pyocd.sh
+DEBUG_SCRIPT = pyocd.sh
+
+PYOCD_TARGET = nrf52
+
+export FLASH_SCRIPT DEBUG_SCRIPT PYOCD_TARGET

boards/arm/nrf52_vbluno52/board.h

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2017 VNG IoT Lab Limited.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef __INC_BOARD_H
+#define __INC_BOARD_H
+
+#include <soc.h>
+
+/* Button*/
+#define BUT_GPIO_PIN	17
+#define BUT_GPIO_NAME	CONFIG_GPIO_NRF5_P0_DEV_NAME
+#define SW0_GPIO_PIN	BUT_GPIO_PIN
+#define SW0_GPIO_NAME	BUT_GPIO_NAME
+
+/* Onboard GREEN LED 0 */
+#define LED0_GPIO_PIN   12
+#define LED0_GPIO_PORT  CONFIG_GPIO_NRF5_P0_DEV_NAME
+
+#define LED_GPIO_PIN    LED0_GPIO_PIN
+#define LED_GPIO_PORT   LED0_GPIO_PORT
+
+#endif /* __INC_BOARD_H */

boards/arm/nrf52_vbluno52/doc/nrf52_vbluno52.rst

@@ -0,0 +1,118 @@
+.. _nrf52_vbluno52:
+
+nRF52-VBLUno52
+##############
+
+Overview
+********
+
+Zephyr can use the nrf52_vbluno52 board configuration to run on the VBLUno52 board,
+a VNG Bluetooth Low Energy UNO using an nRF52832 ARM Cortex-M4F processor.
+It provides support for the Nordic Semiconductor nRF52832 ARM Cortex-M4F CPU and
+the following devices:
+
+* :abbr:`NVIC (Nested Vectored Interrupt Controller)`
+* :abbr:`RTC (nRF RTC System Clock)`
+* UART
+* GPIO
+* FLASH
+* RADIO (Bluetooth Low Energy)
+* Segger RTT (RTT Console)
+
+.. figure:: img/nrf52_vbluno52_pinout.png
+     :align: center
+     :alt: nRF52 VBLUno52
+
+     nRF52_VBLUno52 board
+
+Hardware
+********
+
+The VBLUno52 board has two external oscillators. The frequency of
+the slow clock is 32.768 kHz. The frequency of the main clock
+is 64 MHz.
+
+Supported Features
+==================
+
+The nrf52_vbluno52 board configuration supports the following
+hardware features:
+
++-----------+------------+----------------------+
+| Interface | Controller | Driver/Component     |
++===========+============+======================+
+| NVIC      | on-chip    | nested vectored      |
+|           |            | interrupt controller |
++-----------+------------+----------------------+
+| RTC       | on-chip    | system clock         |
++-----------+------------+----------------------+
+| UART      | on-chip    | serial port          |
++-----------+------------+----------------------+
+| GPIO      | on-chip    | gpio                 |
++-----------+------------+----------------------+
+| FLASH     | on-chip    | flash                |
++-----------+------------+----------------------+
+| RADIO     | on-chip    | Bluetooth            |
++-----------+------------+----------------------+
+| RTT       | on-chip    | console              |
++-----------+------------+----------------------+
+| I2C       | on-chip    | i2c                  |
++-----------+------------+----------------------+
+| SPI       | on-chip    | spi                  |
++-----------+------------+----------------------+
+
+Other hardware features are not supported by the Zephyr kernel.
+
+Connections and IOs
+===================
+
+LED
+---
+
+* LED = LED0 (green) = P0.12
+
+Push buttons
+------------
+
+* BUTTON = BUT = SW0 = P0.17
+
+Programming and Debugging
+*************************
+
+Flashing
+========
+
+The VBLUno52 board has an on-board DAPLink (CMSIS-DAP) interface for flashing and debugging.
+You do not need any other programming device.
+You only need to install the pyOCD tool (https://pypi.python.org/pypi/pyOCD)
+
+This tutorial uses the blinky application :ref:`blinky-sample`
+
+See the :ref:`getting_started` for general information on setting up
+your development environment.
+
+#. To build the Zephyr kernel along with the blinky sample app, enter:
+
+   .. code-block:: console
+
+      $ cd $ZEPHYR_BASE/samples/basic/blinky
+      $ make BOARD=nrf52_vbluno52
+
+#. To build and flash the generated binary image to the board, enter:
+
+   .. code-block:: console
+
+      $ make BOARD=nrf52_vbluno52 flash
+
+Testing the VBLUno52 with Zephyr: buttons, LEDs, UART, BLE
+**********************************************************
+
+Here are some sample applications that you can use to test different
+components on the VBLUno52 board:
+
+* :ref:`hello_world`
+* :ref:`blinky-sample`
+* :ref:`button-sample`
+* :ref:`bluetooth-beacon-sample`
+* :ref:`peripheral_hr`
+

boards/arm/nrf52_vbluno52/nrf52_vbluno52.yaml

@@ -0,0 +1,7 @@
+identifier: nrf52_vbluno52
+name: nRF52-VBLUno52
+type: mcu
+arch: arm
+toolchain:
+  - zephyr
+  - gccarmemb

boards/arm/nrf52_vbluno52/nrf52_vbluno52_defconfig

@@ -0,0 +1,23 @@
+CONFIG_ARM=y
+CONFIG_SOC_FAMILY_NRF5=y
+CONFIG_SOC_SERIES_NRF52X=y
+CONFIG_SOC_NRF52832_QFAA=y
+CONFIG_BOARD_NRF52_VBLUNO52=y
+
+# Enable MPU
+CONFIG_ARM_MPU_NRF52X=y
+
+# enable uart driver
+CONFIG_SERIAL=y
+CONFIG_UART_NRF5=y
+
+# enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# additional board options
+CONFIG_GPIO_AS_PINRESET=y
+
+# bluetooth
+CONFIG_BLUETOOTH=y
+CONFIG_BLUETOOTH_CONTROLLER=y

dts/arm/Makefile

@@ -28,6 +28,7 @@ dtb-$(CONFIG_BOARD_STM32F4_DISCO)	=	stm32f4_disco.dts_compiled
 dtb-$(CONFIG_BOARD_STM32F469I_DISCO)	=	stm32f469i_disco.dts_compiled
 dtb-$(CONFIG_BOARD_96B_NITROGEN)	=	96b_nitrogen.dts_compiled
 dtb-$(CONFIG_BOARD_NRF52_PCA10040)	=	nrf52_pca10040.dts_compiled
+dtb-$(CONFIG_BOARD_NRF52_VBLUNO52)	=	nrf52_vbluno52.dts_compiled
 dtb-$(CONFIG_BOARD_NRF52_BLENANO2)	=	nrf52_blenano2.dts_compiled
 dtb-$(CONFIG_BOARD_NRF52840_PCA10056)	=	nrf52840_pca10056.dts_compiled
 dtb-$(CONFIG_BOARD_ARDUINO_101_BLE)	=	arduino_101_ble.dts_compiled

dts/arm/nrf52_vbluno52.dts

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2017 VNG IoT Lab Limited
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <nordic/nrf52832.dtsi>
+
+/ {
+	model = "VNG VBLUno52 BLE 5.0 board";
+	compatible = "vng,vbluno52", "nordic,nrf52832-qfaa",
+		     "nordic,nrf52832";
+
+	chosen {
+		zephyr,console = &uart0;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+};
+
+&uart0 {
+	status = "ok";
+	compatible = "nordic,nrf-uart";
+	current-speed = <115200>;
+};

dts/arm/nrf52_vbluno52.fixup

@@ -0,0 +1,4 @@
+#define CONFIG_NUM_IRQ_PRIO_BITS	ARM_V7M_NVIC_E000E100_ARM_NUM_IRQ_PRIORITY_BITS
+#define CONFIG_UART_NRF5_IRQ_PRI	NORDIC_NRF_UART_40002000_IRQ_0_PRIORITY
+#define CONFIG_UART_NRF5_BAUD_RATE	NORDIC_NRF_UART_40002000_CURRENT_SPEED
+#define CONFIG_UART_NRF5_NAME		NORDIC_NRF_UART_40002000_LABEL