added board.mk for all boards

src/boards/arduino_nano_33_ble/board.mk

@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840

src/boards/circuitplayground_nrf52840/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/electronut_labs_papyr/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/feather_nrf52832/board.mk

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+# nrf52 is nrf52832
+MCU_SUB_VARIANT = nrf52

src/boards/feather_nrf52840_express/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/itsybitsy_nrf52840_express/board.mk

@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840

src/boards/mdk_nrf52840_dongle/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/metro_nrf52840_express/board.mk

@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840

src/boards/particle_argon/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/particle_boron/board.mk

@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840

src/boards/particle_xenon/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/pca10056/board.mk

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+MCU_SUB_VARIANT = nrf52840

src/boards/pca10059/board.mk

@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840

src/boards/pca10100/board.h

@@ -0,0 +1,61 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Ha Thach for Adafruit Industries
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef PCA10100_H
+#define PCA10100_H
+
+/*------------------------------------------------------------------*/
+/* LED
+ *------------------------------------------------------------------*/
+#define LEDS_NUMBER         2
+#define LED_PRIMARY_PIN     13
+#define LED_SECONDARY_PIN   14
+#define LED_STATE_ON        0
+
+/*------------------------------------------------------------------*/
+/* BUTTON
+ *------------------------------------------------------------------*/
+#define BUTTONS_NUMBER      2
+#define BUTTON_1            11
+#define BUTTON_2            12
+#define BUTTON_PULL         NRF_GPIO_PIN_PULLUP
+
+/*------------------------------------------------------------------*/
+/* UART
+ *------------------------------------------------------------------*/
+#define RX_PIN_NUMBER       8
+#define TX_PIN_NUMBER       6
+#define CTS_PIN_NUMBER      0
+#define RTS_PIN_NUMBER      0
+#define HWFC                false
+
+// Used as model string in OTA mode
+#define BLEDIS_MANUFACTURER    "Nordic"
+#define BLEDIS_MODEL           "PCA10100"
+
+#define UF2_PRODUCT_NAME    "Nordic nRF52833 DK"
+#define UF2_BOARD_ID        "nRF52833-pca10100-v1"
+#define UF2_INDEX_URL       "https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52833-DK"
+
+#endif // PCA10100_H

src/boards/pca10100/board.mk

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+MCU_SUB_VARIANT = nrf52833