cpu/qn908x: Initial minimal support for NXP QN908x CPUs.

boards/common/qn908x/Kconfig

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+# Copyright (c) 2020 iosabi
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+config BOARD_COMMON_QN908X
+    bool
+    depends on CPU_FAM_QN908X
+    # Add common board support here.

boards/common/qn908x/Makefile

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+MODULE = boards_common_qn908x
+
+include $(RIOTBASE)/Makefile.base

boards/common/qn908x/Makefile.features

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+CPU ?= qn908x
+
+# Put defined MCU peripherals here (in alphabetical order)

boards/common/qn908x/Makefile.include

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+# Using dap or jlink depends on which firmware the OpenSDA debugger is running
+#DEBUG_ADAPTER ?= dap
+DEBUG_ADAPTER ?= jlink
+
+# Use the shared OpenOCD configuration
+OPENOCD_CONFIG ?= $(RIOTBOARD)/common/qn908x/dist/openocd.cfg
+
+# Disable the watchdog when flashing. OpenOCD runs a CRC program in RAM to
+# verify the image, which needs to have the WDT disabled but it is normally
+# enabled after a 'reset halt' command.
+OPENOCD_PRE_FLASH_CMDS += "-c qn908x disable_wdog"
+
+# Set default port depending on operating system
+PORT_LINUX ?= /dev/ttyACM0
+PORT_DARWIN ?= $(firstword $(sort $(wildcard /dev/tty.usbmodem*)))
+
+# OpenOCD is able to handle .elf files and is the preferred way.
+FLASHFILE ?= $(ELFFILE)
+
+# Setup serial terminal
+include $(RIOTMAKE)/tools/serial.inc.mk
+
+# This board uses OpenOCD. Note that support for QN908x in OpenOCD at the time
+# of writing has not been merged in the tree and is only available at
+# http://openocd.zylin.com/#/c/5584/ .
+include $(RIOTMAKE)/tools/openocd.inc.mk

boards/common/qn908x/dist/openocd.cfg

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+# Generic configuration for a qn908x-based board.
+
+# QN908X only supports SWD
+transport select swd
+
+# NXP QN908x.
+source [find target/qn908x.cfg]
+
+$TARGETNAME configure -event gdb-attach {
+  halt
+}
+$TARGETNAME configure -rtos auto

boards/qn9080dk/Kconfig

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+# Copyright (c) 2020 iosabi
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config BOARD
+    default "qn9080dk" if BOARD_QN9080DK
+
+config BOARD_QN9080DK
+    bool
+    default y
+    select BOARD_COMMON_QN908X
+    select CPU_MODEL_QN9080XHN
+
+    # Put defined MCU peripherals here (in alphabetical order)
+    select BOARD_HAS_XTAL32K
+    select BOARD_HAS_XTAL_32M
+
+source "$(RIOTBOARD)/common/qn908x/Kconfig"

boards/qn9080dk/Makefile

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+MODULE = board
+
+# Use the common qn908x board.
+DIRS += $(RIOTBOARD)/common/qn908x
+
+include $(RIOTBASE)/Makefile.base

boards/qn9080dk/Makefile.dep

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+ifneq (,$(filter saul_default,$(USEMODULE)))
+  USEMODULE += saul_gpio
+endif

boards/qn9080dk/Makefile.features

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+CPU = qn908x
+CPU_MODEL = qn9080xhn
+
+# Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_gpio periph_gpio_irq
+
+# Include the common qn908x board features.
+include $(RIOTBOARD)/common/qn908x/Makefile.features

boards/qn9080dk/Makefile.include

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+CFLAGS += \
+  -DCONFIG_BOARD_HAS_XTAL \
+  -DCONFIG_BOARD_HAS_XTAL32K \
+  -DCONFIG_BOARD_HAS_XTAL_32M \
+  #
+
+# Include default QN908x board config
+include $(RIOTBOARD)/common/qn908x/Makefile.include

boards/qn9080dk/board.c

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+/*
+ * Copyright (C) 2020 iosabi
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_qn9080dk
+ * @{
+ *
+ * @file
+ * @brief       Board specific implementations for the QN9080DK base board
+ *
+ * @author      iosabi <iosabi@protonmail.com>
+ *
+ * @}
+ */
+
+#include "cpu.h"
+#include "board.h"
+
+#include "periph/gpio.h"
+
+void board_init(void)
+{
+    /* Initialize LEDs and Buttons. */
+    gpio_init(LED_RED_PIN, GPIO_OUT);
+    gpio_init(LED_GREEN_PIN, GPIO_OUT);
+    gpio_init(LED_BLUE_PIN, GPIO_OUT);
+    gpio_init(BTN1_PIN, BTN1_MODE);
+    gpio_init(BTN2_PIN, BTN2_MODE);
+
+    /* initialize the CPU */
+    cpu_init();
+}

boards/qn9080dk/doc.txt

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+/**
+@defgroup    boards_qn9080dk QN9080DK base board
+@ingroup     boards
+@brief       Support for the QN9080DK base board.
+
+### General information
+
+The QN9080DK is the developer board reference from NXP for the QN908x CPUs.
+The developer kit comes with two boards: a larger PCB with a QFN "module"
+including a QN9080DHN soldered onto it, altogether referred as the "base
+board"; and separately a much smaller USB dongle with another QN9080 cpu.
+This board module supports the "base board" only, including the definitions
+of the gpio, buttons and LEDs specific to this board.
+
+This board packs a few peripherals and many GPIOs:
+
+ * MMA8652FC, a 12-bit accelerometer
+ *
+
+The board also features a dedicated programmer hardware implemented using NXP's
+LPC4322, with its dedicated USB port for connecting to a computer on one end
+and the SWD port and one UART RX/TX pair connected to the QN9080 on the other
+end. The LPC4322 also has a fast (50 ksps) ADC ADC122S021 connected to a
+current sense amplifier to monitor the QN9080 current profile directly on
+the board.
+
+For more information visit NXP's product description page for the
+[QN9080-DK](https://www.nxp.com/QN9080DK) where you can find the User's
+Guide.
+
+### User Interface
+
+Buttons:
+
+| Label | RIOT OS macro | MCU PIN  | Function  |
+|:----- |:------------- |:-------- |:--------- |
+| SW1   | BTN1_PIN      | PA24     | User defined |
+| SW2   | BTN2_PIN      | PA19     | User defined |
+| SW3   |               | nRESET   | QN9080 reset |
+
+
+One RGB led, controlled by three GPIOs
+
+| Label | RIOT OS macro | MCU PIN  |
+|:----- |:------------- |:-------- |
+| red   | LED_RED_PIN   | PA31     |
+| green | LED_GREEN_PIN | PA25     |
+| blue  | LED_BLUE_PIN  | PA13     |
+
+### Pinout
+
+Button1:
+
+### Flash the board
+
+The board can be flashed using the internal LPC4322 JTAG/SWD debugger or an
+external debugger connected to P1, selected using JP2.
+
+OpenOCD support for the QN908x is experimental and available as pending
+[patch](http://openocd.zylin.com/#/c/5584/).
+
+ */

boards/qn9080dk/include/board.h

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+/*
+ * Copyright (C) 2020 iosabi
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_qn9080dk
+ * @{
+ *
+ * @file
+ * @brief       Board specific definitions for the QN9080DK base board
+ *
+ * @author      iosabi <iosabi@protonmail.com>
+ */
+
+#ifndef BOARD_H
+#define BOARD_H
+
+#include "cpu.h"
+#include "periph_conf.h"
+#include "periph_cpu.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    Clock configuration
+ * @{
+ */
+#ifndef CLOCK_CORECLOCK
+/* Using 32MHz internal oscillator as default clock source */
+#define CLOCK_CORECLOCK     (32000000ul)
+#endif
+/** @} */
+
+/**
+ * @name    LED configuration
+ * @{
+ */
+#define LED_RED_PIN      GPIO_PIN(PORT_A, 31)
+#define LED_GREEN_PIN    GPIO_PIN(PORT_A, 25)
+#define LED_BLUE_PIN     GPIO_PIN(PORT_A, 13)
+/** @} */
+
+/**
+ * @name    User buttons
+ * @{
+ */
+#define BTN1_PIN         GPIO_PIN(PORT_A, 24)
+#define BTN1_MODE        GPIO_IN_PU
+#define BTN2_PIN         GPIO_PIN(PORT_A, 19)
+#define BTN2_MODE        GPIO_IN_PU
+/** @} */
+
+/**
+ * @brief   Initialize board specific hardware
+ */
+void board_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BOARD_H */
+/** @} */

boards/qn9080dk/include/gpio_params.h

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+/*
+ * Copyright (C) 2020 iosabi
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     boards_qn9080dk
+ * @{
+ *
+ * @file
+ * @brief       Board specific configuration of direct mapped GPIOs
+ *
+ * @author      iosabi <iosabi@protonmail.com>
+ */
+
+#ifndef GPIO_PARAMS_H
+#define GPIO_PARAMS_H
+
+#include "board.h"
+#include "saul/periph.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief    GPIO pin configuration
+ */
+static const saul_gpio_params_t saul_gpio_params[] =
+{
+    {
+        .name = "LED red",
+        .pin = LED_RED_PIN,
+        .mode = GPIO_OUT,
+        .flags = SAUL_GPIO_INIT_CLEAR,
+    },
+    {
+        .name = "LED green",
+        .pin = LED_GREEN_PIN,
+        .mode = GPIO_OUT,
+        .flags = SAUL_GPIO_INIT_CLEAR,
+    },
+    {
+        .name = "LED blue",
+        .pin = LED_BLUE_PIN,
+        .mode = GPIO_OUT,
+        .flags = SAUL_GPIO_INIT_CLEAR,
+    },
+    {
+        .name = "Button(SW1)",
+        .pin = BTN1_PIN,
+        .mode = BTN1_MODE,
+        .flags = SAUL_GPIO_INVERTED,
+    },
+    {
+        .name = "Button(SW2)",
+        .pin = BTN2_PIN,
+        .mode = BTN2_MODE,
+        .flags = SAUL_GPIO_INVERTED,
+    },
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GPIO_PARAMS_H */
+/** @} */