boards: add support for nrf52832-mdk

boards/nrf52832-mdk/Makefile

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

boards/nrf52832-mdk/Makefile.dep

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+ifneq (,$(filter saul_default,$(USEMODULE)))
+  USEMODULE += saul_gpio
+endif
+
+include $(RIOTBOARD)/common/nrf52/Makefile.dep

boards/nrf52832-mdk/Makefile.features

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+# Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_uart
+
+include $(RIOTBOARD)/common/nrf52/Makefile.features

boards/nrf52832-mdk/Makefile.include

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+export CPU_MODEL = nrf52832xxaa
+
+# This board uses a DAP-Link programmer
+# Flashing support is provided through pyocd (default) and openocd.
+# For openocd, a version built against the development branch and containing
+# the support for nrf52 cpu is required.
+PROGRAMMER ?= pyocd
+ifeq (pyocd,$(PROGRAMMER))
+  # The board is not recognized automatically by pyocd, so the CPU target
+  # option is passed explicitly
+  export FLASH_TARGET_TYPE ?= -t $(CPU)
+  include $(RIOTMAKE)/tools/pyocd.inc.mk
+else ifeq (openocd,$(PROGRAMMER))
+  DEBUG_ADAPTER = dap
+endif
+
+include $(RIOTBOARD)/common/nrf52/Makefile.include

boards/nrf52832-mdk/board.c

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+/*
+ * Copyright (C) 2019 Inria
+ *
+ * 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_nrf52832-mdk
+ * @{
+ *
+ * @file
+ * @brief       Board initialization for the nRF52832-MDK
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include "cpu.h"
+#include "board.h"
+
+#include "periph/gpio.h"
+
+void board_init(void)
+{
+    /* initialize the boards LEDs */
+    gpio_init(LED0_PIN, GPIO_OUT);
+    gpio_set(LED0_PIN);
+    gpio_init(LED1_PIN, GPIO_OUT);
+    gpio_set(LED1_PIN);
+    gpio_init(LED2_PIN, GPIO_OUT);
+    gpio_set(LED2_PIN);
+
+    /* initialize the CPU */
+    cpu_init();
+}

boards/nrf52832-mdk/doc.txt

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+/**
+@defgroup    boards_nrf52832-mdk nRF52832-MDK
+@ingroup     boards
+@brief       Support for the nRF52832-MDK
+
+### General information
+
+The Makerdiary [nRF52832-MDK](https://github.com/makerdiary/nrf52832-mdk) board
+is an opensource, micro development kit using the nRF52832 SoC.
+This board provides BLE connectivity.
+
+The nRF52832-MDK v2 version provides a convenient USB dongle form factor.
+
+### Pinout
+
+For nRF52832-MDK v1:
+
+<img src="https://raw.githubusercontent.com/makerdiary/nrf52832-mdk/master/docs/images/nrf52832_mdk_v1_pinout.jpeg"
+     alt="pinout" style="height:800px;"/>
+
+For nRF52832-MDK v2:
+
+<img src="https://raw.githubusercontent.com/makerdiary/nrf52832-mdk/master/docs/images/nrf52832_mdk_v2_pinout.jpeg"
+     alt="pinout" style="height:800px;"/>
+
+### Flash the board
+
+By default, the board is flashed with PyOCD programmer via a DAPLink.
+
+PyOCD can be installed using Python package manager:
+```
+    pip install pyocd --user -U
+```
+
+See the `Flashing` section in @ref boards_common_nrf52.
+
+
+### Accessing STDIO via UART
+
+The STDIO is directly accessible via the USB port. On a Linux host, it's
+generally mapped to `/dev/ttyACM0`.
+
+Use the `term` target to connect to the board serial port<br/>
+```
+    make BOARD=nrf52832-mdk -C examples/hello-world term
+```
+ */

boards/nrf52832-mdk/include/board.h

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+/*
+ * Copyright (C) 2019 Inria
+ *
+ * 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_nrf52832-mdk
+ * @{
+ *
+ * @file
+ * @brief       Board specific configuration for the nRF52832-MDK
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef BOARD_H
+#define BOARD_H
+
+#include "cpu.h"
+#include "board_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    LED pin configuration
+ * @{
+ */
+#define LED0_PIN            GPIO_PIN(0, 23)
+#define LED1_PIN            GPIO_PIN(0, 22)
+#define LED2_PIN            GPIO_PIN(0, 24)
+
+#define LED_PORT            (NRF_P0)
+#define LED0_MASK           (1 << 23)
+#define LED1_MASK           (1 << 22)
+#define LED2_MASK           (1 << 24)
+#define LED_MASK            (LED0_MASK | LED1_MASK | LED2_MASK)
+
+#define LED0_ON             (LED_PORT->OUTCLR = LED0_MASK)
+#define LED0_OFF            (LED_PORT->OUTSET = LED0_MASK)
+#define LED0_TOGGLE         (LED_PORT->OUT   ^= LED0_MASK)
+
+#define LED1_ON             (LED_PORT->OUTCLR = LED1_MASK)
+#define LED1_OFF            (LED_PORT->OUTSET = LED1_MASK)
+#define LED1_TOGGLE         (LED_PORT->OUT   ^= LED1_MASK)
+
+#define LED2_ON             (LED_PORT->OUTCLR = LED2_MASK)
+#define LED2_OFF            (LED_PORT->OUTSET = LED2_MASK)
+#define LED2_TOGGLE         (LED_PORT->OUT   ^= LED2_MASK)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BOARD_H */
+/** @} */

boards/nrf52832-mdk/include/gpio_params.h

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+/*
+ * Copyright (C) 2019 Inria
+ *
+ * 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_nrf52832-mdk
+ * @{
+ *
+ * @file
+ * @brief       Configuration of SAUL mapped GPIO pins
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef GPIO_PARAMS_H
+#define GPIO_PARAMS_H
+
+#include "board.h"
+#include "saul/periph.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief    LED configuration
+ */
+static const  saul_gpio_params_t saul_gpio_params[] =
+{
+    {
+        .name  = "Led Red",
+        .pin   = LED0_PIN,
+        .mode  = GPIO_OUT,
+        .flags = (SAUL_GPIO_INVERTED | SAUL_GPIO_INIT_CLEAR),
+    },
+    {
+        .name  = "Led Green",
+        .pin   = LED1_PIN,
+        .mode  = GPIO_OUT,
+        .flags = (SAUL_GPIO_INVERTED | SAUL_GPIO_INIT_CLEAR),
+    },
+    {
+        .name  = "Led Blue",
+        .pin   = LED2_PIN,
+        .mode  = GPIO_OUT,
+        .flags = (SAUL_GPIO_INVERTED | SAUL_GPIO_INIT_CLEAR),
+    },
+};
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GPIO_PARAMS_H */
+/** @} */

boards/nrf52832-mdk/include/periph_conf.h

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+/*
+ * Copyright (C) 2019 Inria
+ *
+ * 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_nrf52832-mdk
+ * @{
+ *
+ * @file
+ * @brief       Peripheral configuration for the nRF52832-MDK
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ */
+
+#ifndef PERIPH_CONF_H
+#define PERIPH_CONF_H
+
+#include "periph_cpu.h"
+#include "cfg_clock_32_1.h"
+#include "cfg_rtt_default.h"
+#include "cfg_timer_default.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name    UART configuration
+ * @{
+ */
+#define UART_NUMOF          (1U)
+#define UART_PIN_RX         GPIO_PIN(0,19)
+#define UART_PIN_TX         GPIO_PIN(0,20)
+/** @} */
+
+/**
+ * @name    SPI configuration
+ * @{
+ */
+static const spi_conf_t spi_config[] = {
+    {
+        .dev  = NRF_SPI0,
+        .sclk = 15,
+        .mosi = 13,
+        .miso = 14
+    }
+};
+
+#define SPI_NUMOF           (sizeof(spi_config) / sizeof(spi_config[0]))
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* PERIPH_CONF_H */