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Posted to commits@nuttx.apache.org by ra...@apache.org on 2020/08/30 16:15:35 UTC
[incubator-nuttx] 01/02: Add support for NRF52832 MakerDiary MDK
board
This is an automated email from the ASF dual-hosted git repository.
raiden00 pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/incubator-nuttx.git
commit fd615d1cd9c65d45c7083e8521f5b6c523e93156
Author: Matias N <ma...@protobits.dev>
AuthorDate: Sat Aug 29 13:09:27 2020 -0300
Add support for NRF52832 MakerDiary MDK board
---
boards/Kconfig | 12 +++
boards/arm/nrf52/nrf52832-mdk/Kconfig | 8 ++
boards/arm/nrf52/nrf52832-mdk/README.txt | 6 ++
.../arm/nrf52/nrf52832-mdk/configs/nsh/defconfig | 49 +++++++++
boards/arm/nrf52/nrf52832-mdk/include/board.h | 96 +++++++++++++++++
boards/arm/nrf52/nrf52832-mdk/scripts/Make.defs | 76 +++++++++++++
.../arm/nrf52/nrf52832-mdk/scripts/flash_config.ld | 105 ++++++++++++++++++
boards/arm/nrf52/nrf52832-mdk/src/Makefile | 33 ++++++
boards/arm/nrf52/nrf52832-mdk/src/nrf52832-mdk.h | 80 ++++++++++++++
boards/arm/nrf52/nrf52832-mdk/src/nrf52_appinit.c | 74 +++++++++++++
boards/arm/nrf52/nrf52832-mdk/src/nrf52_autoleds.c | 118 +++++++++++++++++++++
boards/arm/nrf52/nrf52832-mdk/src/nrf52_boot.c | 82 ++++++++++++++
boards/arm/nrf52/nrf52832-mdk/src/nrf52_bringup.c | 82 ++++++++++++++
13 files changed, 821 insertions(+)
diff --git a/boards/Kconfig b/boards/Kconfig
index 1449a6a..6e9b2a7 100644
--- a/boards/Kconfig
+++ b/boards/Kconfig
@@ -730,6 +730,14 @@ config ARCH_BOARD_NRF52832_SPARKFUN
---help---
This option selects the Sparkfun nRF52832 breakout board
+config ARCH_BOARD_NRF52832_MDK
+ bool "MakerDiary nRF52832 MDK"
+ depends on ARCH_CHIP_NRF52
+ select ARCH_HAVE_LEDS
+ select ARCH_HAVE_BUTTONS
+ ---help---
+ This option selects MakerDiary's nRF52832 MDKboard
+
config ARCH_BOARD_NRF52840_DK
bool "Nordic nRF52840 Development Kit (PCA10056)"
depends on ARCH_CHIP_NRF52
@@ -2196,6 +2204,7 @@ config ARCH_BOARD
default "ne64badge" if ARCH_BOARD_NE64BADGE
default "nrf52-feather" if ARCH_BOARD_NRF52_FEATHER
default "nrf52832-sparkfun" if ARCH_BOARD_NRF52832_SPARKFUN
+ default "nrf52832-mdk" if ARCH_BOARD_NRF52832_MDK
default "nrf52832-dk" if ARCH_BOARD_NRF52832_DK
default "nrf52840-dk" if ARCH_BOARD_NRF52840_DK
default "nrf52840-dongle" if ARCH_BOARD_NRF52840_DONGLE
@@ -2538,6 +2547,9 @@ endif
if ARCH_BOARD_NRF52832_SPARKFUN
source "boards/arm/nrf52/nrf52832-sparkfun/Kconfig"
endif
+if ARCH_BOARD_NRF52832_MDK
+source "boards/arm/nrf52/nrf52832-mdk/Kconfig"
+endif
if ARCH_BOARD_NRF52832_DK
source "boards/arm/nrf52/nrf52832-dk/Kconfig"
endif
diff --git a/boards/arm/nrf52/nrf52832-mdk/Kconfig b/boards/arm/nrf52/nrf52832-mdk/Kconfig
new file mode 100644
index 0000000..b0539e4
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/Kconfig
@@ -0,0 +1,8 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_NRF52832_MDK
+
+endif
diff --git a/boards/arm/nrf52/nrf52832-mdk/README.txt b/boards/arm/nrf52/nrf52832-mdk/README.txt
new file mode 100644
index 0000000..a58e091
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/README.txt
@@ -0,0 +1,6 @@
+MakerDiary nRF52832 MDK
+=======================
+
+https://makerdiary.com/collections/frontpage/products/nrf52832-mdk-iot-micro-development-kit
+
+
diff --git a/boards/arm/nrf52/nrf52832-mdk/configs/nsh/defconfig b/boards/arm/nrf52/nrf52832-mdk/configs/nsh/defconfig
new file mode 100644
index 0000000..9b4d2fa
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/configs/nsh/defconfig
@@ -0,0 +1,49 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_ARCH_FPU is not set
+# CONFIG_NSH_DISABLE_IFCONFIG is not set
+# CONFIG_NSH_DISABLE_PS is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="nrf52832-sparkfun"
+CONFIG_ARCH_BOARD_NRF52832_SPARKFUN=y
+CONFIG_ARCH_CHIP="nrf52"
+CONFIG_ARCH_CHIP_NRF52832=y
+CONFIG_ARCH_CHIP_NRF52=y
+CONFIG_ARCH_STACKDUMP=y
+CONFIG_ARCH_STDARG_H=y
+CONFIG_BOARD_LOOPSPERMSEC=5500
+CONFIG_FAT_LCNAMES=y
+CONFIG_FAT_LFN=y
+CONFIG_FS_FAT=y
+CONFIG_MAX_TASKS=16
+CONFIG_MAX_WDOGPARMS=2
+CONFIG_MM_REGIONS=2
+CONFIG_NFILE_DESCRIPTORS=8
+CONFIG_NFILE_STREAMS=8
+CONFIG_NRF52_UART0=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_MQ_MSGS=4
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PREALLOC_WDOGS=4
+CONFIG_RAM_SIZE=65535
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=y
+CONFIG_SDCLONE_DISABLE=y
+CONFIG_START_DAY=26
+CONFIG_START_MONTH=3
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_TASK_NAME_SIZE=0
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_USER_ENTRYPOINT="nsh_main"
+CONFIG_WDOG_INTRESERVE=0
diff --git a/boards/arm/nrf52/nrf52832-mdk/include/board.h b/boards/arm/nrf52/nrf52832-mdk/include/board.h
new file mode 100644
index 0000000..88c8396
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/include/board.h
@@ -0,0 +1,96 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/include/board.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_NRF52_NRF52832_MDK_INCLUDE_BOARD_H
+#define __BOARDS_ARM_NRF52_NRF52832_MDK_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdbool.h>
+
+#if defined(CONFIG_ARCH_IRQBUTTONS) && defined(CONFIG_NRF52_GPIOTE)
+# include <nuttx/irq.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Clocking *****************************************************************/
+
+#define BOARD_SYSTICK_CLOCK (64000000)
+
+/* Clocking *****************************************************************/
+
+/* A low output illuminates the LED.
+ *
+ * LED index values for use with board_userled()
+ */
+
+#define BOARD_LED1 0
+#define BOARD_LED2 1
+#define BOARD_LED3 2
+#define BOARD_NLEDS 3
+
+/* LED bits for use with board_userled_all() */
+
+#define BOARD_LED1_BIT (1 << BOARD_LED1)
+#define BOARD_LED2_BIT (1 << BOARD_LED2)
+#define BOARD_LED3_BIT (1 << BOARD_LED3)
+
+/* If CONFIG_ARCH_LEDS is defined, the LED will be controlled as follows
+ * for NuttX debug functionality (where NC means "No Change").
+ */
+
+#define LED_STARTED 0 /* OFF */
+#define LED_HEAPALLOCATE 0 /* OFF */
+#define LED_IRQSENABLED 0 /* OFF */
+#define LED_STACKCREATED 1 /* ON */
+#define LED_INIRQ 2 /* NC */
+#define LED_SIGNAL 2 /* NC */
+#define LED_ASSERTION 2 /* NC */
+#define LED_PANIC 3 /* Flashing */
+
+/* If CONFIG_ARCH_LEDS is not defined, then the LEDs are completely under
+ * control of the application. The following interfaces are then available
+ * for application control of the LEDs:
+ *
+ * uint32_t board_userled_initialize(void);
+ * void board_userled(int led, bool ledon);
+ * void board_userled_all(uint32_t ledset);
+ */
+
+/* Button definitions *******************************************************/
+
+/* No buttons on board */
+
+/* UART Pins ****************************************************************/
+
+/* The following definitions must be provided so that the NRF52 serial
+ * driver can set up the UART for the serial console properly.
+ */
+
+#define BOARD_UART0_RX_PIN (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(19))
+#define BOARD_UART0_TX_PIN (GPIO_OUTPUT | GPIO_PORT0 | GPIO_PIN(20))
+
+#endif /* __BOARDS_ARM_NRF52_NRF52832_MDK_INCLUDE_BOARD_H */
diff --git a/boards/arm/nrf52/nrf52832-mdk/scripts/Make.defs b/boards/arm/nrf52/nrf52832-mdk/scripts/Make.defs
new file mode 100644
index 0000000..8e612d4
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/scripts/Make.defs
@@ -0,0 +1,76 @@
+############################################################################
+# boards/arm/nrf52/nrf52832-mdk/src/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(TOPDIR)/.config
+include $(TOPDIR)/tools/Config.mk
+include $(TOPDIR)/arch/arm/src/armv7-m/Toolchain.defs
+
+LDSCRIPT = flash_config.ld
+
+ifeq ($(CONFIG_CYGWIN_WINTOOL),y)
+ ARCHSCRIPT = -T "${shell cygpath -w $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)}"
+else
+ ARCHSCRIPT = -T$(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+endif
+
+CC = $(CROSSDEV)gcc
+CXX = $(CROSSDEV)g++
+CPP = $(CROSSDEV)gcc -E
+LD = $(CROSSDEV)ld
+STRIP = $(CROSSDEV)strip --strip-unneeded
+AR = $(ARCROSSDEV)ar rcs
+NM = $(ARCROSSDEV)nm
+OBJCOPY = $(CROSSDEV)objcopy
+OBJDUMP = $(CROSSDEV)objdump
+
+ARCHCCVERSION = ${shell $(CC) -v 2>&1 | sed -n '/^gcc version/p' | sed -e 's/^gcc version \([0-9\.]\)/\1/g' -e 's/[-\ ].*//g' -e '1q'}
+ARCHCCMAJOR = ${shell echo $(ARCHCCVERSION) | cut -d'.' -f1}
+
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ ARCHOPTIMIZATION = -g
+endif
+
+ifneq ($(CONFIG_DEBUG_NOOPT),y)
+ ARCHOPTIMIZATION += $(MAXOPTIMIZATION) -fno-strict-aliasing -fno-strength-reduce -fomit-frame-pointer
+endif
+
+ARCHCFLAGS = -fno-builtin
+ARCHCXXFLAGS = -fno-builtin -fno-exceptions -fcheck-new -fno-rtti
+ARCHWARNINGS = -Wall -Wstrict-prototypes -Wshadow -Wundef
+ARCHWARNINGSXX = -Wall -Wshadow -Wundef
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS = $(ARCHCFLAGS) $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS = $(ARCHCXXFLAGS) $(ARCHWARNINGSXX) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+AFLAGS = $(CFLAGS) -D__ASSEMBLY__
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+ifneq ($(CROSSDEV),arm-nuttx-elf-)
+ LDFLAGS += -nostartfiles -nodefaultlibs
+endif
+ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
+ LDFLAGS += -g
+endif
diff --git a/boards/arm/nrf52/nrf52832-mdk/scripts/flash_config.ld b/boards/arm/nrf52/nrf52832-mdk/scripts/flash_config.ld
new file mode 100644
index 0000000..f87a2b9
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/scripts/flash_config.ld
@@ -0,0 +1,105 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/scripts/flash_config.ld
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+MEMORY
+{
+ progmem (rx) : ORIGIN = 0x00000000, LENGTH = 512K
+ datamem (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
+}
+
+OUTPUT_ARCH(arm)
+ENTRY(__start) /* Treat __start as the anchor for dead code stripping */
+EXTERN(_vectors) /* Force the vectors to be included in the output */
+SECTIONS
+{
+ .text :
+ {
+ _stext = ABSOLUTE(.);
+ *(.vectors)
+ *(.text .text.*)
+ *(.fixup)
+ *(.gnu.warning)
+ *(.rodata .rodata.*)
+ *(.gnu.linkonce.t.*)
+ *(.glue_7)
+ *(.glue_7t)
+ *(.got)
+ *(.gcc_except_table)
+ *(.gnu.linkonce.r.*)
+ _etext = ABSOLUTE(.);
+ } > progmem
+
+ .init_section :
+ {
+ _sinit = ABSOLUTE(.);
+ *(.init_array .init_array.*)
+ _einit = ABSOLUTE(.);
+ } > progmem
+
+ .ARM.extab :
+ {
+ *(.ARM.extab*)
+ } > progmem
+
+ __exidx_start = ABSOLUTE(.);
+ .ARM.exidx :
+ {
+ *(.ARM.exidx*)
+ } > progmem
+ __exidx_end = ABSOLUTE(.);
+
+ _eronly = ABSOLUTE(.);
+
+ .data :
+ {
+ _sdata = ABSOLUTE(.);
+ *(.data .data.*)
+ *(.gnu.linkonce.d.*)
+ CONSTRUCTORS
+ . = ALIGN(4);
+ _edata = ABSOLUTE(.);
+ } > datamem AT > progmem
+
+ /* BSS */
+
+ .bss :
+ {
+ _sbss = ABSOLUTE(.);
+ *(.bss .bss.*)
+ *(.gnu.linkonce.b.*)
+ *(COMMON)
+ . = ALIGN(4);
+ _ebss = ABSOLUTE(.);
+ } > datamem
+
+ /* Stabs debugging sections. */
+
+ .stab 0 : { *(.stab) }
+ .stabstr 0 : { *(.stabstr) }
+ .stab.excl 0 : { *(.stab.excl) }
+ .stab.exclstr 0 : { *(.stab.exclstr) }
+ .stab.index 0 : { *(.stab.index) }
+ .stab.indexstr 0 : { *(.stab.indexstr) }
+ .comment 0 : { *(.comment) }
+ .debug_abbrev 0 : { *(.debug_abbrev) }
+ .debug_info 0 : { *(.debug_info) }
+ .debug_line 0 : { *(.debug_line) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ .debug_aranges 0 : { *(.debug_aranges) }
+}
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/Makefile b/boards/arm/nrf52/nrf52832-mdk/src/Makefile
new file mode 100644
index 0000000..c6c35ce
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/Makefile
@@ -0,0 +1,33 @@
+############################################################################
+# boards/arm/nrf52/nrf52832-mdk/src/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements. See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership. The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+include $(TOPDIR)/Make.defs
+
+CSRCS = nrf52_boot.c nrf52_bringup.c
+
+ifeq ($(CONFIG_LIB_BOARDCTL),y)
+CSRCS += nrf52_appinit.c
+endif
+
+ifeq ($(CONFIG_ARCH_LEDS),y)
+CSRCS += nrf52_autoleds.c
+endif
+
+include $(TOPDIR)/boards/Board.mk
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/nrf52832-mdk.h b/boards/arm/nrf52/nrf52832-mdk/src/nrf52832-mdk.h
new file mode 100644
index 0000000..7ff1d5a
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/nrf52832-mdk.h
@@ -0,0 +1,80 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/src/nrf52832-mdk.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __BOARDS_ARM_NRF52_NRF52832_MDK_SRC_NRF52832_MDK_H
+#define __BOARDS_ARM_NRF52_NRF52832_MDK_SRC_NRF52832_MDK_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include "nrf52_gpio.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* LED definitions **********************************************************/
+
+/* Definitions to configure LED GPIO as outputs */
+
+#define GPIO_LED1 (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN(23))
+#define GPIO_LED2 (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN(22))
+#define GPIO_LED3 (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN(24))
+
+/* Button definitions *******************************************************/
+
+/* No buttons on board */
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nrf52_bringup
+ *
+ * Description:
+ * Perform architecture-specific initialization
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y :
+ * Called from board_late_initialize().
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_LIB_BOARDCTL=y :
+ * Called from the NSH library
+ *
+ ****************************************************************************/
+
+int nrf52_bringup(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_NRF52_NRF52832_MDK_SRC_NRF52832_MDK_H */
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/nrf52_appinit.c b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_appinit.c
new file mode 100644
index 0000000..8306c1e
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_appinit.c
@@ -0,0 +1,74 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-sparkfun.h/src/nrf52_appinit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdio.h>
+#include <debug.h>
+#include <errno.h>
+
+#include <nuttx/board.h>
+
+#include "chip.h"
+#include "nrf52832-mdk.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_app_initialize
+ *
+ * Description:
+ * Perform architecture specific initialization
+ *
+ * Input Parameters:
+ * arg - The boardctl() argument is passed to the board_app_initialize()
+ * implementation without modification. The argument has no
+ * meaning to NuttX; the meaning of the argument is a contract
+ * between the board-specific initialization logic and the
+ * matching application logic. The value could be such things as a
+ * mode enumeration value, a set of DIP switch switch settings, a
+ * pointer to configuration data read from a file or serial FLASH,
+ * or whatever you would like to do with it. Every implementation
+ * should accept zero/NULL as a default configuration.
+ *
+ * Returned Value:
+ * Zero (OK) is returned on success; a negated errno value is returned on
+ * any failure to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int board_app_initialize(uintptr_t arg)
+{
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+ /* Board initialization already performed by board_late_initialize() */
+
+ return OK;
+#else
+ /* Perform board-specific initialization */
+
+ return nrf52_bringup();
+#endif
+}
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/nrf52_autoleds.c b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_autoleds.c
new file mode 100644
index 0000000..fd9e3b2
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_autoleds.c
@@ -0,0 +1,118 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/src/nrf52_autoleds.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "chip.h"
+#include "arm_arch.h"
+#include "arm_internal.h"
+
+#include "nrf52832-mdk.h"
+
+#ifdef CONFIG_ARCH_LEDS
+
+#define LED_ON 0
+#define LED_OFF 1
+
+/* This array maps an LED number to GPIO pin configuration */
+
+static const uint32_t g_ledcfg[BOARD_NLEDS] =
+{
+ GPIO_LED1, GPIO_LED2, GPIO_LED3
+};
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: led_dumppins
+ ****************************************************************************/
+
+#ifdef LED_VERBOSE
+static void led_dumppins(FAR const char *msg)
+{
+ nrf52_pin_dump(PINCONFIG_LED, msg);
+ nrf52_gpio_dump(GPIO_LED, msg);
+}
+#else
+# define led_dumppins(m)
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_autoled_initialize
+ ****************************************************************************/
+
+void board_autoled_initialize(void)
+{
+ int i;
+
+ /* Configure LED pin as a GPIO outputs */
+
+ led_dumppins("board_autoled_initialize() Entry)");
+
+ for (i = 0; i < BOARD_NLEDS; i++)
+ {
+ nrf52_gpio_config(g_ledcfg[i]);
+ }
+
+ led_dumppins("board_autoled_initialize() Exit");
+}
+
+/****************************************************************************
+ * Name: board_autoled_on
+ ****************************************************************************/
+
+void board_autoled_on(int led)
+{
+ if ((unsigned)led < BOARD_NLEDS)
+ {
+ nrf52_gpio_write(g_ledcfg[led], LED_ON);
+ }
+}
+
+/****************************************************************************
+ * Name: board_autoled_off
+ ****************************************************************************/
+
+void board_autoled_off(int led)
+{
+ if ((unsigned)led < BOARD_NLEDS)
+ {
+ nrf52_gpio_write(g_ledcfg[led], LED_OFF);
+ }
+}
+
+#endif /* CONFIG_ARCH_LEDS */
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/nrf52_boot.c b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_boot.c
new file mode 100644
index 0000000..ae6868a
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_boot.c
@@ -0,0 +1,82 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/src/nrf52_boot.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <debug.h>
+
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "arm_arch.h"
+#include "arm_internal.h"
+
+#include "nrf52832-mdk.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nrf52_board_initialize
+ *
+ * Description:
+ * All NRF52xxx architectures must provide the following entry point.
+ * This entry point is called early in the initialization -- after all
+ * memory has been configured and mapped but before any devices have been
+ * initialized.
+ *
+ ****************************************************************************/
+
+void nrf52_board_initialize(void)
+{
+ /* Configure on-board LEDs if LED support has been selected. */
+
+#ifdef CONFIG_ARCH_LEDS
+ board_autoled_initialize();
+#endif
+}
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ * If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
+ * initialization call will be performed in the boot-up sequence to a
+ * function called board_late_initialize(). board_late_initialize() will
+ * be called immediately after up_initialize() is called and just before
+ * the initial application is started. This additional initialization
+ * phase may be used, for example, to initialize board-specific device
+ * drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+void board_late_initialize(void)
+{
+ /* Perform board-specific initialization */
+
+ nrf52_bringup();
+}
+#endif
diff --git a/boards/arm/nrf52/nrf52832-mdk/src/nrf52_bringup.c b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_bringup.c
new file mode 100644
index 0000000..1deaab4
--- /dev/null
+++ b/boards/arm/nrf52/nrf52832-mdk/src/nrf52_bringup.c
@@ -0,0 +1,82 @@
+/****************************************************************************
+ * boards/arm/nrf52/nrf52832-mdk/src/nrf52_bringup.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <syslog.h>
+
+#ifdef CONFIG_NRF52_WDT
+# include "nrf52_wdt.h"
+#endif
+
+#ifdef CONFIG_USERLED
+# include <nuttx/leds/userled.h>
+#endif
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nrf52_bringup
+ *
+ * Description:
+ * Perform architecture-specific initialization
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=y :
+ * Called from board_late_initialize().
+ *
+ * CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_LIB_BOARDCTL=y :
+ * Called from the NSH library
+ *
+ ****************************************************************************/
+
+int nrf52_bringup(void)
+{
+ int ret;
+
+#ifdef CONFIG_NRF52_WDT
+ /* Start Watchdog timer */
+
+ ret = nrf52_wdt_initialize(CONFIG_WATCHDOG_DEVPATH, 1, 1);
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: nrf52_wdt_initialize failed: %d\n", ret);
+ }
+#endif
+
+#ifdef CONFIG_USERLED
+ /* Register the LED driver */
+
+ ret = userled_lower_initialize(CONFIG_EXAMPLES_LEDS_DEVPATH);
+ if (ret < 0)
+ {
+ syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
+ }
+#endif
+
+ UNUSED(ret);
+ return OK;
+}