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Changed made to get chibiArduino library to work on Atmel SAMR21 MCU via Xplained Board #2

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Changed made to get chibiArduino library to work on Atmel SAMR21 MCU via Xplained Board #2

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28 changes: 28 additions & 0 deletions boards.txt
View file
Original file line number Diff line number Diff line change
@@ -95,3 +95,31 @@ adafruit_feather_m0.bootloader.file=feather/samd21_sam_ba.bin
#adafruit_metro_m0.build.pid=0x8013
#adafruit_metro_m0.bootloader.tool=openocd
#adafruit_metro_m0.bootloader.file=metro/samd21_sam_ba.bin

# Atmel Xplained SAMR21G18A (Progamming Port)
# ---------------------------------------
xplained_samr21g18a_edbg.name=Atmel Xplained SAMR21G18A (Programming Port)
xplained_samr21g18a_edbg.vid.0=0x03eb
xplained_samr21g18a_edbg.pid.0=0x2157

xplained_samr21g18a_edbg.upload.tool=openocd
xplained_samr21g18a_edbg.upload.protocol=sam-ba
xplained_samr21g18a_edbg.upload.maximum_size=262144
xplained_samr21g18a_edbg.upload.use_1200bps_touch=false
xplained_samr21g18a_edbg.upload.wait_for_upload_port=false
xplained_samr21g18a_edbg.upload.native_usb=false
xplained_samr21g18a_edbg.build.mcu=cortex-m0plus
xplained_samr21g18a_edbg.build.f_cpu=48000000L
xplained_samr21g18a_edbg.build.usb_product="Test"
xplained_samr21g18a_edbg.build.usb_manufacturer="Test LLC"
xplained_samr21g18a_edbg.build.board=SAMD_ZERO
xplained_samr21g18a_edbg.build.core=arduino
xplained_samr21g18a_edbg.build.extra_flags=-D__SAMD21G18A__ {build.usb_flags}
xplained_samr21g18a_edbg.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
xplained_samr21g18a_edbg.build.openocdscript=openocd_scripts/arduino_zero.cfg
xplained_samr21g18a_edbg.build.variant=xplained_samr21g18a
xplained_samr21g18a_edbg.build.variant_system_lib=
xplained_samr21g18a_edbg.build.vid=0x2341
xplained_samr21g18a_edbg.build.pid=0x804d
xplained_samr21g18a_edbg.bootloader.tool=openocd
xplained_samr21g18a_edbg.bootloader.file=zero/samd21_sam_ba.bin
2 changes: 1 addition & 1 deletion cores/arduino/USB/CDC.cpp
View file
Original file line number Diff line number Diff line change
@@ -345,6 +345,6 @@ bool Serial_::rts() {
return _usbLineInfo.lineState & 0x2;
}

Serial_ Serial(USBDevice);
Serial_ SerialUSB(USBDevice);

#endif
2 changes: 1 addition & 1 deletion cores/arduino/USB/USBAPI.h
View file
Original file line number Diff line number Diff line change
@@ -170,7 +170,7 @@ class Serial_ : public Stream
USBDeviceClass &usb;
RingBuffer *_cdc_rx_buffer;
};
extern Serial_ Serial;
extern Serial_ SerialUSB;

//================================================================================
//================================================================================
2 changes: 1 addition & 1 deletion cores/arduino/USB/USBCore.cpp
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Original file line number Diff line number Diff line change
@@ -267,7 +267,7 @@ void USBDeviceClass::handleEndpoint(uint8_t ep)

// Handle received bytes
if (available(CDC_ENDPOINT_OUT))
Serial.accept();
SerialUSB.accept();
}
if (ep == CDC_ENDPOINT_IN)
{
31 changes: 31 additions & 0 deletions variants/xplained_samr21g18a/debug_scripts/variant.gdb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,31 @@
#
# Arduino Zero OpenOCD script.
#
# Copyright (c) 2014-2015 Arduino LLC. All right reserved.
#
# 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
#

# Define 'reset' command
define reset

info reg

break main

# End of 'reset' command
end

target remote | openocd -c "interface cmsis-dap" -c "set CHIPNAME at91samd21g18" -f target/at91samdXX.cfg -c "gdb_port pipe; log_output openocd.log"
211 changes: 211 additions & 0 deletions variants/xplained_samr21g18a/linker_scripts/gcc/flash_with_bootloader.ld
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Original file line number Diff line number Diff line change
@@ -0,0 +1,211 @@
/*
Copyright (c) 2014-2015 Arduino LLC. All right reserved.

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
*/

/* Linker script to configure memory regions.
* Need modifying for a specific board.
* FLASH.ORIGIN: starting address of flash
* FLASH.LENGTH: length of flash
* RAM.ORIGIN: starting address of RAM bank 0
* RAM.LENGTH: length of RAM bank 0
*/
MEMORY
{
FLASH (rx) : ORIGIN = 0x00000000+0x2000, LENGTH = 0x00040000-0x2000 /* First 8KB used by bootloader */
RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
}

/* Linker script to place sections and symbol values. Should be used together
* with other linker script that defines memory regions FLASH and RAM.
* It references following symbols, which must be defined in code:
* Reset_Handler : Entry of reset handler
*
* It defines following symbols, which code can use without definition:
* __exidx_start
* __exidx_end
* __copy_table_start__
* __copy_table_end__
* __zero_table_start__
* __zero_table_end__
* __etext
* __data_start__
* __preinit_array_start
* __preinit_array_end
* __init_array_start
* __init_array_end
* __fini_array_start
* __fini_array_end
* __data_end__
* __bss_start__
* __bss_end__
* __end__
* end
* __HeapLimit
* __StackLimit
* __StackTop
* __stack
*/
ENTRY(Reset_Handler)

SECTIONS
{
.text :
{
KEEP(*(.isr_vector))
*(.text*)

KEEP(*(.init))
KEEP(*(.fini))

/* .ctors */
*crtbegin.o(.ctors)
*crtbegin?.o(.ctors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
*(SORT(.ctors.*))
*(.ctors)

/* .dtors */
*crtbegin.o(.dtors)
*crtbegin?.o(.dtors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
*(SORT(.dtors.*))
*(.dtors)

*(.rodata*)

KEEP(*(.eh_frame*))
} > FLASH

.ARM.extab :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > FLASH

__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > FLASH
__exidx_end = .;

/* To copy multiple ROM to RAM sections,
* uncomment .copy.table section and,
* define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
/*
.copy.table :
{
. = ALIGN(4);
__copy_table_start__ = .;
LONG (__etext)
LONG (__data_start__)
LONG (__data_end__ - __data_start__)
LONG (__etext2)
LONG (__data2_start__)
LONG (__data2_end__ - __data2_start__)
__copy_table_end__ = .;
} > FLASH
*/

/* To clear multiple BSS sections,
* uncomment .zero.table section and,
* define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
/*
.zero.table :
{
. = ALIGN(4);
__zero_table_start__ = .;
LONG (__bss_start__)
LONG (__bss_end__ - __bss_start__)
LONG (__bss2_start__)
LONG (__bss2_end__ - __bss2_start__)
__zero_table_end__ = .;
} > FLASH
*/

__etext = .;

.data : AT (__etext)
{
__data_start__ = .;
*(vtable)
*(.data*)

. = ALIGN(4);
/* preinit data */
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP(*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);

. = ALIGN(4);
/* init data */
PROVIDE_HIDDEN (__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE_HIDDEN (__init_array_end = .);


. = ALIGN(4);
/* finit data */
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array))
PROVIDE_HIDDEN (__fini_array_end = .);

KEEP(*(.jcr*))
. = ALIGN(4);
/* All data end */
__data_end__ = .;

} > RAM

.bss :
{
. = ALIGN(4);
__bss_start__ = .;
*(.bss*)
*(COMMON)
. = ALIGN(4);
__bss_end__ = .;
} > RAM

.heap (COPY):
{
__end__ = .;
PROVIDE(end = .);
*(.heap*)
__HeapLimit = .;
} > RAM

/* .stack_dummy section doesn't contains any symbols. It is only
* used for linker to calculate size of stack sections, and assign
* values to stack symbols later */
.stack_dummy (COPY):
{
*(.stack*)
} > RAM

/* Set stack top to end of RAM, and stack limit move down by
* size of stack_dummy section */
__StackTop = ORIGIN(RAM) + LENGTH(RAM);
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
PROVIDE(__stack = __StackTop);

__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;

/* Check if data + heap + stack exceeds RAM limit */
ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
}
212 changes: 212 additions & 0 deletions variants/xplained_samr21g18a/linker_scripts/gcc/flash_without_bootloader.ld
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,212 @@
/*
Copyright (c) 2014-2015 Arduino LLC. All right reserved.

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
*/

/* Linker script to configure memory regions.
* Need modifying for a specific board.
* FLASH.ORIGIN: starting address of flash
* FLASH.LENGTH: length of flash
* RAM.ORIGIN: starting address of RAM bank 0
* RAM.LENGTH: length of RAM bank 0
*/
MEMORY
{
FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
}

/* Linker script to place sections and symbol values. Should be used together
* with other linker script that defines memory regions FLASH and RAM.
* It references following symbols, which must be defined in code:
* Reset_Handler : Entry of reset handler
*
* It defines following symbols, which code can use without definition:
* __exidx_start
* __exidx_end
* __copy_table_start__
* __copy_table_end__
* __zero_table_start__
* __zero_table_end__
* __etext
* __data_start__
* __preinit_array_start
* __preinit_array_end
* __init_array_start
* __init_array_end
* __fini_array_start
* __fini_array_end
* __data_end__
* __bss_start__
* __bss_end__
* __end__
* end
* __HeapLimit
* __StackLimit
* __StackTop
* __stack
* __ram_end__
*/
ENTRY(Reset_Handler)

SECTIONS
{
.text :
{
KEEP(*(.isr_vector))
*(.text*)

KEEP(*(.init))
KEEP(*(.fini))

/* .ctors */
*crtbegin.o(.ctors)
*crtbegin?.o(.ctors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
*(SORT(.ctors.*))
*(.ctors)

/* .dtors */
*crtbegin.o(.dtors)
*crtbegin?.o(.dtors)
*(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
*(SORT(.dtors.*))
*(.dtors)

*(.rodata*)

KEEP(*(.eh_frame*))
} > FLASH

.ARM.extab :
{
*(.ARM.extab* .gnu.linkonce.armextab.*)
} > FLASH

__exidx_start = .;
.ARM.exidx :
{
*(.ARM.exidx* .gnu.linkonce.armexidx.*)
} > FLASH
__exidx_end = .;

/* To copy multiple ROM to RAM sections,
* uncomment .copy.table section and,
* define __STARTUP_COPY_MULTIPLE in startup_ARMCMx.S */
/*
.copy.table :
{
. = ALIGN(4);
__copy_table_start__ = .;
LONG (__etext)
LONG (__data_start__)
LONG (__data_end__ - __data_start__)
LONG (__etext2)
LONG (__data2_start__)
LONG (__data2_end__ - __data2_start__)
__copy_table_end__ = .;
} > FLASH
*/

/* To clear multiple BSS sections,
* uncomment .zero.table section and,
* define __STARTUP_CLEAR_BSS_MULTIPLE in startup_ARMCMx.S */
/*
.zero.table :
{
. = ALIGN(4);
__zero_table_start__ = .;
LONG (__bss_start__)
LONG (__bss_end__ - __bss_start__)
LONG (__bss2_start__)
LONG (__bss2_end__ - __bss2_start__)
__zero_table_end__ = .;
} > FLASH
*/

__etext = .;

.data : AT (__etext)
{
__data_start__ = .;
*(vtable)
*(.data*)

. = ALIGN(4);
/* preinit data */
PROVIDE_HIDDEN (__preinit_array_start = .);
KEEP(*(.preinit_array))
PROVIDE_HIDDEN (__preinit_array_end = .);

. = ALIGN(4);
/* init data */
PROVIDE_HIDDEN (__init_array_start = .);
KEEP(*(SORT(.init_array.*)))
KEEP(*(.init_array))
PROVIDE_HIDDEN (__init_array_end = .);


. = ALIGN(4);
/* finit data */
PROVIDE_HIDDEN (__fini_array_start = .);
KEEP(*(SORT(.fini_array.*)))
KEEP(*(.fini_array))
PROVIDE_HIDDEN (__fini_array_end = .);

KEEP(*(.jcr*))
. = ALIGN(4);
/* All data end */
__data_end__ = .;

} > RAM

.bss :
{
. = ALIGN(4);
__bss_start__ = .;
*(.bss*)
*(COMMON)
. = ALIGN(4);
__bss_end__ = .;
} > RAM

.heap (COPY):
{
__end__ = .;
PROVIDE(end = .);
*(.heap*)
__HeapLimit = .;
} > RAM

/* .stack_dummy section doesn't contains any symbols. It is only
* used for linker to calculate size of stack sections, and assign
* values to stack symbols later */
.stack_dummy (COPY):
{
*(.stack*)
} > RAM

/* Set stack top to end of RAM, and stack limit move down by
* size of stack_dummy section */
__StackTop = ORIGIN(RAM) + LENGTH(RAM) ;
__StackLimit = __StackTop - SIZEOF(.stack_dummy);
PROVIDE(__stack = __StackTop);

__ram_end__ = ORIGIN(RAM) + LENGTH(RAM) -1 ;

/* Check if data + heap + stack exceeds RAM limit */
ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
}
30 changes: 30 additions & 0 deletions variants/xplained_samr21g18a/openocd_scripts/arduino_zero.cfg
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
#
# Arduino Zero OpenOCD script.
#
# Copyright (c) 2014-2015 Arduino LLC. All right reserved.
#
# 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
#

source [find interface/cmsis-dap.cfg]

# chip name
set CHIPNAME at91samd21g18
set ENDIAN little

# choose a port here
set telnet_port 0

source [find target/at91samdXX.cfg]
21 changes: 21 additions & 0 deletions variants/xplained_samr21g18a/pins_arduino.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,21 @@
/*
Copyright (c) 2014-2015 Arduino LLC. All right reserved.
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
*/

// API compatibility
#include "variant.h"

238 changes: 238 additions & 0 deletions variants/xplained_samr21g18a/variant.cpp
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Large diffs are not rendered by default.

214 changes: 214 additions & 0 deletions variants/xplained_samr21g18a/variant.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,214 @@
/*
Copyright (c) 2014-2015 Arduino LLC. All right reserved.
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_ARDUINO_ZERO_
#define _VARIANT_ARDUINO_ZERO_

/*----------------------------------------------------------------------------
* Definitions
*----------------------------------------------------------------------------*/

/** Frequency of the board main oscillator */
#define VARIANT_MAINOSC (32768ul)

/** Master clock frequency */
#define VARIANT_MCK (48000000ul)

#define CHB_AT86RF 1
#define CHB_SAMD_ZERO 1

/*----------------------------------------------------------------------------
* Headers
*----------------------------------------------------------------------------*/

#include "WVariant.h"

#ifdef __cplusplus
#include "SERCOM.h"
#include "Uart.h"
#endif // __cplusplus

#ifdef __cplusplus
extern "C"
{
#endif // __cplusplus

/*----------------------------------------------------------------------------
* Pins
*----------------------------------------------------------------------------*/

// Number of pins defined in PinDescription array
#define PINS_COUNT (26u)
#define NUM_DIGITAL_PINS (14u)
#define NUM_ANALOG_INPUTS (6u)
#define NUM_ANALOG_OUTPUTS (1u)

#define digitalPinToPort(P) ( &(PORT->Group[g_APinDescription[P].ulPort]) )
#define digitalPinToBitMask(P) ( 1 << g_APinDescription[P].ulPin )
//#define analogInPinToBit(P) ( )
#define portOutputRegister(port) ( &(port->OUT.reg) )
#define portInputRegister(port) ( &(port->IN.reg) )
#define portModeRegister(port) ( &(port->DIR.reg) )
#define digitalPinHasPWM(P) ( g_APinDescription[P].ulPWMChannel != NOT_ON_PWM || g_APinDescription[P].ulTCChannel != NOT_ON_TIMER )

/*
* digitalPinToTimer(..) is AVR-specific and is not defined for SAMD
* architecture. If you need to check if a pin supports PWM you must
* use digitalPinHasPWM(..).
*
* https://github.com/arduino/Arduino/issues/1833
*/
// #define digitalPinToTimer(P)

// Interrupts
#define digitalPinToInterrupt(P) ( g_APinDescription[P].ulExtInt )

// LEDs
#define PIN_LED_13 (13u)
#define PIN_LED_RXL (25u)
#define PIN_LED_TXL (26u)
#define PIN_LED PIN_LED_13
#define PIN_LED2 PIN_LED_RXL
#define PIN_LED3 PIN_LED_TXL
#define LED_BUILTIN PIN_LED_13

/*
* Analog pins
*/
#define PIN_A0 (14ul)
#define PIN_A1 (15ul)
#define PIN_A2 (16ul)
#define PIN_A3 (17ul)
#define PIN_A4 (18ul)
#define PIN_A5 (19ul)
#define PIN_A6 (8ul)
#define PIN_A7 (9ul)

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 ;
#define ADC_RESOLUTION 12

// Other pins
#define PIN_ATN (38ul)
static const uint8_t ATN = PIN_ATN;

/*
* Serial interfaces
*/
// Serial (EDBG)
#define PIN_SERIAL_RX (31ul)
#define PIN_SERIAL_TX (30ul)

// modified by AKIBA
#define PAD_SERIAL_TX (UART_TX_PAD_0)
#define PAD_SERIAL_RX (SERCOM_RX_PAD_1)

// Serial1
#define PIN_SERIAL1_RX (0ul)
#define PIN_SERIAL1_TX (1ul)
#define PAD_SERIAL1_TX (UART_TX_PAD_2)
#define PAD_SERIAL1_RX (SERCOM_RX_PAD_3)

/*
* SPI Interfaces
*/
#define SPI_INTERFACES_COUNT 1

#define PIN_SPI_MISO (22u)
#define PIN_SPI_MOSI (23u)
#define PIN_SPI_SCK (24u)

#define PERIPH_SPI sercom4
#define PAD_SPI_TX SPI_PAD_2_SCK_3
#define PAD_SPI_RX SERCOM_RX_PAD_0

static const uint8_t SS = (25ul) ; // SERCOM4 last PAD is present on A2 but HW SS isn't used. Set here only for reference.
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 (20u)
#define PIN_WIRE_SCL (21u)
#define PERIPH_WIRE sercom3
#define WIRE_IT_HANDLER SERCOM3_Handler

/*
* USB
*/
#define PIN_USB_HOST_ENABLE (27ul)
#define PIN_USB_DM (28ul)
#define PIN_USB_DP (29ul)

#ifdef __cplusplus
}
#endif

/*----------------------------------------------------------------------------
* Arduino objects - C++ only
*----------------------------------------------------------------------------*/

#ifdef __cplusplus

/* =========================
* ===== SERCOM DEFINITION
* =========================
*/
extern SERCOM sercom0;
extern SERCOM sercom1;
extern SERCOM sercom2;
extern SERCOM sercom3;
extern SERCOM sercom4;
extern SERCOM sercom5;

extern Uart Serial;
extern Uart Serial1;

#endif

// These serial port names are intended to allow libraries and architecture-neutral
// sketches to automatically default to the correct port name for a particular type
// of use. For example, a GPS module would normally connect to SERIAL_PORT_HARDWARE_OPEN,
// the first hardware serial port whose RX/TX pins are not dedicated to another use.
//
// SERIAL_PORT_MONITOR Port which normally prints to the Arduino Serial Monitor
//
// SERIAL_PORT_USBVIRTUAL Port which is USB virtual serial
//
// SERIAL_PORT_LINUXBRIDGE Port which connects to a Linux system via Bridge library
//
// SERIAL_PORT_HARDWARE Hardware serial port, physical RX & TX pins.
//
// SERIAL_PORT_HARDWARE_OPEN Hardware serial ports which are open for use. Their RX & TX
// pins are NOT connected to anything by default.
#define SERIAL_PORT_USBVIRTUAL SerialUSB
#define SERIAL_PORT_MONITOR Serial
// Serial has no physical pins broken out, so it's not listed as HARDWARE port
#define SERIAL_PORT_HARDWARE Serial1
#define SERIAL_PORT_HARDWARE_OPEN Serial1

#endif /* _VARIANT_ARDUINO_ZERO_ */