boards/nrf52: add initial support for Thingy:52 board

boards/Kconfig

@@ -1090,6 +1090,14 @@ config ARCH_BOARD_NRF52840_DONGLE
 	---help---
 		This option selects the Nordic nRF52840 Dongle (PCA10059)
 
+config ARCH_BOARD_THINGY52
+	bool "Nordic Thingy:52 Prototyping platform"
+	depends on ARCH_CHIP_NRF52
+	select ARCH_HAVE_BUTTONS
+	select ARCH_HAVE_IRQBUTTONS
+	---help---
+		This option selects the Nordic Thingy:52 prototyping platform
+
 config ARCH_BOARD_NRF5340_DK
 	bool "Nordic nRF5340 Development Kit (PCA10095)"
 	depends on ARCH_CHIP_NRF53
@@ -2910,6 +2918,7 @@ config ARCH_BOARD
 	default "nrf52832-dk"               if ARCH_BOARD_NRF52832_DK
 	default "nrf52840-dk"               if ARCH_BOARD_NRF52840_DK
 	default "nrf52840-dongle"           if ARCH_BOARD_NRF52840_DONGLE
+	default "thingy52"                  if ARCH_BOARD_THINGY52
 	default "nrf5340-dk"                if ARCH_BOARD_NRF5340_DK
 	default "nrf5340-audio-dk"          if ARCH_BOARD_NRF5340_AUDIO_DK
 	default "ntosd-dm320"               if ARCH_BOARD_NTOSD_DM320

boards/arm/nrf52/thingy52/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_THINGY52
+
+endif

boards/arm/nrf52/thingy52/configs/nsh/defconfig

@@ -0,0 +1,38 @@
+#
+# 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="thingy52"
+CONFIG_ARCH_BOARD_THINGY52=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_INIT_ENTRYPOINT="nsh_main"
+CONFIG_MM_REGIONS=2
+CONFIG_NRF52_UART0=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_LINELEN=64
+CONFIG_NSH_READLINE=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_RAM_SIZE=65535
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_WAITPID=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

boards/arm/nrf52/thingy52/include/board.h

@@ -0,0 +1,72 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/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_THINGY52_INCLUDE_BOARD_H
+#define __BOARDS_ARM_NRF52_THINGY52_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)
+
+/* Button definitions *******************************************************/
+
+/* Board supports four buttons. */
+
+#define BUTTON_BTN1       0
+#define NUM_BUTTONS       1
+
+#define BUTTON_BTN1_BIT  (1 << BUTTON_BTN1)
+
+/* UART Pins ****************************************************************/
+
+/* UART0:
+ *   RX - P0.02
+ *   TX - P0.03
+ */
+
+#define BOARD_UART0_RX_PIN  (GPIO_INPUT  | GPIO_PORT0 | GPIO_PIN(2))
+#define BOARD_UART0_TX_PIN  (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN(3))
+
+/* I2C Pins *****************************************************************/
+
+/* I2C0 (TWI0)
+ *   I2C0_SCL - P0.07
+ *   I2C0_SDA - P0.08
+ */
+
+#define BOARD_I2C0_SCL_PIN (GPIO_OUTPUT | GPIO_PORT0 | GPIO_PIN(7))
+#define BOARD_I2C0_SDA_PIN (GPIO_INPUT  | GPIO_PORT0 | GPIO_PIN(8))
+
+#endif /* __BOARDS_ARM_NRF52_THINGY52_INCLUDE_BOARD_H */

boards/arm/nrf52/thingy52/scripts/Make.defs

@@ -0,0 +1,39 @@
+############################################################################
+# boards/arm/nrf52/thingy52/scripts/Make.defs
+#
+# 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
+ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+
+ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(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

boards/arm/nrf52/thingy52/scripts/flash_config.ld

@@ -0,0 +1,106 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/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) }
+}

boards/arm/nrf52/thingy52/src/Makefile

@@ -0,0 +1,33 @@
+############################################################################
+# boards/arm/nrf52/thingy52/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_BOARDCTL),y)
+CSRCS += nrf52_appinit.c
+endif
+
+ifeq ($(CONFIG_ARCH_BUTTONS),y)
+CSRCS += nrf52_buttons.c
+endif
+
+include $(TOPDIR)/boards/Board.mk

boards/arm/nrf52/thingy52/src/nrf52_appinit.c

@@ -0,0 +1,74 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/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 "thingy52.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
+}

boards/arm/nrf52/thingy52/src/nrf52_boot.c

@@ -0,0 +1,79 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/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_internal.h"
+#include "thingy52.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

boards/arm/nrf52/thingy52/src/nrf52_bringup.c

@@ -0,0 +1,160 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/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>
+
+#include <nuttx/fs/fs.h>
+
+#ifdef CONFIG_NRF52_WDT
+#  include "nrf52_wdt_lowerhalf.h"
+#endif
+
+#ifdef CONFIG_USERLED
+#  include <nuttx/leds/userled.h>
+#endif
+
+#ifdef CONFIG_INPUT_BUTTONS
+#  include <nuttx/input/buttons.h>
+#endif
+
+#ifdef CONFIG_NRF52_SOFTDEVICE_CONTROLLER
+#  include "nrf52_sdc.h"
+#endif
+
+#include "thingy52.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nrf52_i2c_register
+ *
+ * Description:
+ *   Register one I2C drivers for the I2C tool.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+static void nrf52_i2c_register(int bus)
+{
+  struct i2c_master_s *i2c;
+  int ret;
+
+  i2c = nrf52_i2cbus_initialize(bus);
+  if (i2c == NULL)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to get I2C%d interface\n", bus);
+    }
+  else
+    {
+      ret = i2c_register(i2c, bus);
+      if (ret < 0)
+        {
+          syslog(LOG_ERR, "ERROR: Failed to register I2C%d driver: %d\n",
+                 bus, ret);
+          nrf52_i2cbus_uninitialize(i2c);
+        }
+    }
+}
+#endif
+
+/****************************************************************************
+ * Name: nrf52_i2ctool
+ *
+ * Description:
+ *   Register I2C drivers for the I2C tool.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+static void nrf52_i2ctool(void)
+{
+#ifdef CONFIG_NRF52_I2C0
+  nrf52_i2c_register(0);
+#endif
+#ifdef CONFIG_NRF52_I2C1
+  nrf52_i2c_register(1);
+#endif
+}
+#endif
+
+/****************************************************************************
+ * Name: nrf52_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library
+ *
+ ****************************************************************************/
+
+int nrf52_bringup(void)
+{
+  int ret;
+
+#ifdef CONFIG_FS_PROCFS
+  /* Mount the procfs file system */
+
+  ret = nx_mount(NULL, NRF52_PROCFS_MOUNTPOINT, "procfs", 0, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR,
+             "ERROR: Failed to mount the PROC filesystem: %d\n",  ret);
+    }
+#endif /* CONFIG_FS_PROCFS */
+
+#ifdef CONFIG_INPUT_BUTTONS
+  /* Register the BUTTON driver */
+
+  ret = btn_lower_initialize("/dev/buttons");
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
+    }
+#endif
+
+#ifdef CONFIG_NRF52_SOFTDEVICE_CONTROLLER
+  ret = nrf52_sdc_initialize();
+
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: nrf52_sdc_initialize() failed: %d\n", ret);
+    }
+#endif
+
+#if defined(CONFIG_I2C) && defined(CONFIG_SYSTEM_I2CTOOL)
+  nrf52_i2ctool();
+#endif
+
+  UNUSED(ret);
+  return OK;
+}

boards/arm/nrf52/thingy52/src/nrf52_buttons.c

@@ -0,0 +1,150 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/src/nrf52_buttons.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 <errno.h>
+#include <stdint.h>
+
+#include <nuttx/arch.h>
+#include <nuttx/board.h>
+#include <arch/board/board.h>
+
+#include "nrf52_gpio.h"
+#include "nrf52_gpiote.h"
+
+#include "thingy52.h"
+
+#ifdef CONFIG_ARCH_BUTTONS
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/* Pin configuration for each thingy52 button.  This array is indexed by
+ * the BUTTON_* definitions in board.h
+ */
+
+static const uint32_t g_buttons[NUM_BUTTONS] =
+{
+  GPIO_BUTTON1,
+};
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_button_initialize
+ *
+ * Description:
+ *   board_button_initialize() must be called to initialize button resources.
+ *   After that, board_buttons() may be called to collect the current state
+ *   of all buttons or board_button_irq() may be called to register button
+ *   interrupt handlers.
+ *
+ ****************************************************************************/
+
+uint32_t board_button_initialize(void)
+{
+  int i;
+
+  /* Configure the GPIO pins as inputs. */
+
+  for (i = 0; i < NUM_BUTTONS; i++)
+    {
+      nrf52_gpio_config(g_buttons[i]);
+    }
+
+  return NUM_BUTTONS;
+}
+
+/****************************************************************************
+ * Name: board_buttons
+ ****************************************************************************/
+
+uint32_t board_buttons(void)
+{
+  uint32_t ret = 0;
+  int i;
+
+  /* Check that state of each key */
+
+  for (i = 0; i < NUM_BUTTONS; i++)
+    {
+      /* A LOW value means that the key is pressed. */
+
+      bool released = nrf52_gpio_read(g_buttons[i]);
+
+      /* Accumulate the set of depressed (not released) keys */
+
+      if (!released)
+        {
+          ret |= (1 << i);
+        }
+    }
+
+  return ret;
+}
+
+/****************************************************************************
+ * Button support.
+ *
+ * Description:
+ *   board_button_initialize() must be called to initialize button resources.
+ *   After that, board_buttons() may be called to collect the current state
+ *   of all buttons or board_button_irq() may be called to register button
+ *   interrupt handlers.
+ *
+ *   After board_button_initialize() has been called, board_buttons() may be
+ *   called to collect the state of all buttons.  board_buttons() returns an
+ *   32-bit bit set with each bit associated with a button.  See the
+ *   BUTTON_*_BIT definitions in board.h for the meaning of each bit.
+ *
+ *   board_button_irq() may be called to register an interrupt handler that
+ *   will be called when a button is depressed or released.  The ID value is
+ *   a button enumeration value that uniquely identifies a button resource.
+ *   See the BUTTON_* definitions in board.h for the meaning of enumeration
+ *   value.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_ARCH_IRQBUTTONS
+int board_button_irq(int id, xcpt_t irqhandler, void *arg)
+{
+  int ret = OK;
+
+  ret = nrf52_gpiote_set_event(g_buttons[id], true, true, irqhandler, arg);
+  if (ret < 0)
+    {
+      ierr("ERROR: nrf52_gpiote_set_event failed %d\n", ret);
+      return ret;
+    }
+
+  return OK;
+}
+#endif
+
+#endif /* CONFIG_ARCH_BUTTONS */

boards/arm/nrf52/thingy52/src/thingy52.h

@@ -0,0 +1,126 @@
+/****************************************************************************
+ * boards/arm/nrf52/thingy52/src/thingy52.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_THINGY52_SRC_THINGY52_H
+#define __BOARDS_ARM_NRF52_THINGY52_SRC_THINGY52_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+
+#include "nrf52_gpio.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Configuration ************************************************************/
+
+/* procfs File System */
+
+#ifdef CONFIG_FS_PROCFS
+#  ifdef CONFIG_NSH_PROC_MOUNTPOINT
+#    define NRF52_PROCFS_MOUNTPOINT CONFIG_NSH_PROC_MOUNTPOINT
+#  else
+#    define NRF52_PROCFS_MOUNTPOINT "/proc"
+#  endif
+#endif
+
+/* Button definitions *******************************************************/
+
+#define GPIO_BUTTON1 (GPIO_INPUT | GPIO_PULLUP | GPIO_PORT0 | GPIO_PIN(11))
+
+/* LIS2DH12 (I2C address: 0x19)
+ *   INT - P0.12
+ */
+
+#define GPIO_LIS2DH12_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(12))
+
+/* MPU9250 (I2C address: 0x68)
+ *   INT - P0.05
+ */
+
+#define GPIO_MPU9250_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(5))
+
+/* LPS22HB (I2C address: 0x5c)
+ *   INT - P0.23
+ */
+
+#define GPIO_LPS22HB_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(23))
+
+/* HTS221 (I2C address: 0x5f)
+ *   INT - P0.24
+ */
+
+#define GPIO_HTS221_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(24))
+
+/* BH1745NUC (I2C address: 0x38)
+ *   INT - P0.31
+ */
+
+#define GPIO_BH1745NUC_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(31))
+
+/* CCS811 (I2C address: 0x5a)
+ *   INT - P0.22
+ */
+
+#define GPIO_CCS811_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(22))
+
+/* SX1509 (I2C address: 0xe3)
+ *   RESET - P0.16
+ */
+
+#define GPIO_XS1509_RESET (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 | GPIO_PIN(16))
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Functions Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nrf52_bringup
+ *
+ * Description:
+ *   Perform architecture-specific initialization
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=y :
+ *     Called from board_late_initialize().
+ *
+ *   CONFIG_BOARD_LATE_INITIALIZE=n && CONFIG_BOARDCTL=y :
+ *     Called from the NSH library
+ *
+ ****************************************************************************/
+
+int nrf52_bringup(void);
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_NRF52_THINGY52_SRC_THINGY52_H */