added basic code

2 files changed, 239 insertions, 0 deletions

diff --git a/arduino/variants/feather_nrf52840_express/variant.cpp b/arduino/variants/feather_nrf52840_express/variant.cpp
new file mode 100755
index 0000000..7d74f4a
--- /dev/null
+++ b/arduino/variants/feather_nrf52840_express/variant.cpp
@@ -0,0 +1,92 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+#include "nrf.h"
+
+#include "usb.h"
+#include "flash/flash_qspi.h"
+
+const uint32_t g_ADigitalPinMap[] =
+{
+  25,  // D0 is UART TX on P0.25
+  24,  // D1 is UART RX on P0.24 
+  10,  // D2 is on P0.10
+  47,  // D3 is LED1 on P1.15
+  42,  // D4 is LED2 on P1.10
+  40,  // D5 on P1.08
+  7,   // D6 on P0.07 
+  34,  // D7 is Button on P1.02
+  16,  // D8 is NeoPixel on P0.16
+  26,  // D9 on P0.26
+  27,  // D10 on P0.27 
+  6,   // D11 on P.06 
+  8,   // D12 on P0.08
+  41,  // D13 on P1.09 
+
+  4,   // D14 is A0 on P0.04
+  5,   // D15 is A1 on P0.05
+  30,  // D16 is A2 on P0.30
+  28,  // D17 is A3 on P0.28
+  2,   // D18 is A4 on P0.02
+  3,   // D19 is A5 on P0.03
+  29,  // D20 is A6 (Battery) on P0.29
+  31,  // D21 is A7 (ARef) on P0.31
+
+  12,  // D22 is SDA on P0.12
+  11,  // D23 is SCL on P0.11
+
+  15,  // D24 is SPI MISO on P0.15 
+  13,  // D25 is SPI MOSI on P0.13 
+  14,  // D26 is SPI SCK on P0.14 
+
+  19,  // D27 is QSPI CLK on P0.19
+  20,  // D28 is QSPI CS on P0.20
+  17,  // D29 is QSPI Data 0 on P0.17
+  22,  // D30 is QSPI Data 1 on P0.22
+  23,  // D31 is QSPI Data 2 on P0.23
+  21,  // D32 is QSPI Data 3 on P0.21
+
+  // P1
+  33, 34, 35, 36, 37, 38, 39,
+  40, 41, 42, 43, 44, 45, 46, 47
+};
+
+void initVariant()
+{
+  // LED1 & LED2
+  pinMode(PIN_LED1, OUTPUT);
+  ledOff(PIN_LED1);
+
+  pinMode(PIN_LED2, OUTPUT);
+  ledOff(PIN_LED2);
+
+#if 0 // disable QSPI flash for now
+  // Init External Flash
+  flash_qspi_init();
+#endif
+
+
+  // USB init
+  usb_init();
+}
+
diff --git a/arduino/variants/feather_nrf52840_express/variant.h b/arduino/variants/feather_nrf52840_express/variant.h
new file mode 100755
index 0000000..b7ba1d0
--- /dev/null
+++ b/arduino/variants/feather_nrf52840_express/variant.h
@@ -0,0 +1,147 @@
+ /*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#ifndef _VARIANT_FEATHER52840_
+#define _VARIANT_FEATHER52840_
+
+/** Master clock frequency */
+#define VARIANT_MCK       (64000000ul)
+
+#define USE_LFXO      // Board uses 32khz crystal for LF
+// define USE_LFRC    // Board uses RC for LF
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif // __cplusplus
+
+// Number of pins defined in PinDescription array
+#define PINS_COUNT           (48)
+#define NUM_DIGITAL_PINS     (48)
+#define NUM_ANALOG_INPUTS    (6)
+#define NUM_ANALOG_OUTPUTS   (0)
+
+// LEDs
+#define PIN_LED1             (3)
+#define PIN_LED2             (4)
+#define PIN_NEOPIXEL         (8)
+
+#define LED_BUILTIN          PIN_LED1
+#define LED_CONN             PIN_LED2
+
+#define LED_RED              PIN_LED1
+#define LED_BLUE             PIN_LED2
+
+#define LED_STATE_ON         1         // State when LED is litted
+
+// Buttons
+/*
+#define PIN_BUTTON1             (2)
+#define PIN_BUTTON2             (3)
+#define PIN_BUTTON3             (4)
+#define PIN_BUTTON4             (5)
+*/
+
+/*
+ * Analog pins
+ */
+#define PIN_A0               (14)
+#define PIN_A1               (15)
+#define PIN_A2               (16)
+#define PIN_A3               (17)
+#define PIN_A4               (18)
+#define PIN_A5               (19)
+#define PIN_A6               (20)
+#define PIN_A7               (21)
+
+static const uint8_t A0  = PIN_A0 ;
+static const uint8_t A1  = PIN_A1 ;
+static const uint8_t A2  = PIN_A2 ;
+static const uint8_t A3  = PIN_A3 ;
+static const uint8_t A4  = PIN_A4 ;
+static const uint8_t A5  = PIN_A5 ;
+static const uint8_t A6  = PIN_A6 ;
+static const uint8_t A7  = PIN_A7 ;
+#define ADC_RESOLUTION    14
+
+// Other pins
+#define PIN_AREF           (PIN_A7)
+#define PIN_DFU            (7)
+#define PIN_NFC1           (2)
+#define PIN_NFC2           (51)
+
+static const uint8_t AREF = PIN_AREF;
+
+/*
+ * Serial interfaces
+ */
+// Serial
+#define PIN_SERIAL_RX       (1)
+#define PIN_SERIAL_TX       (0)
+
+/*
+ * SPI Interfaces
+ */
+#define SPI_INTERFACES_COUNT 1
+
+#define PIN_SPI_MISO         (24)
+#define PIN_SPI_MOSI         (25)
+#define PIN_SPI_SCK          (26)
+
+static const uint8_t SS   = (5);
+static const uint8_t MOSI = PIN_SPI_MOSI ;
+static const uint8_t MISO = PIN_SPI_MISO ;
+static const uint8_t SCK  = PIN_SPI_SCK ;
+
+/*
+ * Wire Interfaces
+ */
+#define WIRE_INTERFACES_COUNT 1
+
+#define PIN_WIRE_SDA         (22)
+#define PIN_WIRE_SCL         (23)
+
+/*
+ * QSPI interface for external flash
+ */
+#define PIN_QSPI_SCK         27
+#define PIN_QSPI_CS          28
+#define PIN_QSPI_DATA0       29
+#define PIN_QSPI_DATA1       30
+#define PIN_QSPI_DATA2       31
+#define PIN_QSPI_DATA3       32
+
+// On-board QSPI Flash
+// If EXTERNAL_FLASH_DEVICES is not defined, all supported devices will be used
+#define EXTERNAL_FLASH_DEVICES   GD25Q16C
+
+#ifdef __cplusplus
+}
+#endif
+
+/*----------------------------------------------------------------------------
+ *        Arduino objects - C++ only
+ *----------------------------------------------------------------------------*/
+
+#endif