adding samd core files

.gitignore

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+package_avdweb_nl_pre_release_index.json
+*.bz2

avdweb_nl_samd/.gitignore

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+*.bz2
+
+bootloaders/*/build/

avdweb_nl_samd/CHANGELOG

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+SAMD CORE ?.?.?? ????.??.??
+
+SAMD CORE 1.6.21 2019.04.01
+
+* MKR boards: changed I2C to sercom2, SPI1 + Serial2 to sercom4
+* Improved accuracy of delay() function. Thanks @BenF
+* MKR 1500: Changed SARA module to be powered off on boot
+
+SAMD CORE 1.6.20 2018.11.28
+
+* Replaced boolean type with bool in examples. Thanks @per1234
+* Added c++ linker command to allow to include libstdc++ when linking. Thanks @helmut64
+* CPX driver fixes. Thanks @dhalbert
+* I2S: Changed library to use 8 MHz oscillator source if 48MHz divider does not fit in 8 bits
+* UART: Added frame error handling
+* USB: Fixed memory leak on reconnects
+* SDU: Added support for Arduino M0. Thanks @jandrassy
+* Added arduinoOTA upload keys for Arduino M0. Thanks @jandrassy
+* USB: Fixed USB Host failures and fixed memory overwrite in USBHost. Thanks @gdsports
+* USB: Added method to return USB error code. Thanks @MarkFischer
+* CDC: Clear line state on end()
+* USB: Added USB device end() method
+* Removed requirement that the DAC is on A0. Thanks @GabrielNotman
+* Added alternate ports 44, 45 to make the SWCLK and SWDIO pins available on the Zero. Thanks @helmut64
+* Added defines for MKR pin layout
+* Fixed freeze in tone()
+* Added MKR NB 1500 variant and bootloader
+* Increased the default serial buffer size to 256
+
+SAMD CORE 1.6.19 2018.07.11
+
+* Fixed bootloader tools for .org boards
+* M0: Updated pin definitions for D6, D7 and D13 to match Zero
+* SPI: Fixed interrupt mask to block. Thanks @ggajoch
+* Added MKR WiFi 1010 variant and bootloader
+* Updated Windows Drivers to 1.4.0 and re-signed Adafruit_Circuit_Playground_Express.inf
+
+SAMD CORE 1.6.18 2018.03.05
+
+* Wire: Added support for general call (broadcast)
+* SPI: Added SPI.notUsingInterrupt(...) API
+* Fixed build errors if variant disabled USB
+* Wire: TX and RX buffers are now 256 bytes (previously was 64 bytes)
+* Added samd21e sercom compatibility. Thanks @mitchellpontague
+* Fixed lock ups when outputting to UART during ISR
+* Wire: correct I2C frequency calculations, and allow variant to overide default pull up resistor rise time
+* USB: Fixed build errors when CDC_ENABLED was not set. Thanks @gdsports
+
+SAMD CORE 1.6.17 2017.11.29
+
+* More accurate approximation for multiplication factor of PLL to make 48Mhz. Thanks @joverbee
+* Fix changing trigger mode (RISING/FALLING/...) in attachInterrupt(..) during runtime. Thanks @joverbee
+* Improved ISR response time. Thanks @joverbee
+* USB power current can now be overridden in the variant. Thanks @awatterott
+* UART's now support optional RTS and CTS pins defined in the variant.
+* Added support for MKR GSM 1400 and MKR WAN 1300
+
+SAMD CORE 1.6.16 2017.08.23
+
+* Is now possible to use PWM on D7 (though it can't be used with PWM on D12 at the same time). Thanks @Adminius
+* PWMs now can perform real 16-bit resolution if analogWriteResolution(16) is set. Thanks @Adminius
+* USB CDC: fixed issue of available() getting stuck when receiving ZLP's
+* Serial (UART) tx is now buffered.
+* Improved CRYSTALLESS stability. Thanks @tannewt
+* Some fixes to Adafruit Circuit Playground Express variant. Thanks @ladyada
+* Updated Stream and Print class
+* Native USB now supports USB Serial Number
+* Fixed pgm_read_ptr compatibility macro. Thanks @nkrkv
+
+SAMD CORE 1.6.15 2017.04.27
+
+* Added missing Windows driver for MKRFox1200
+* Added SDU support for MKRFox1200
+
+SAMD CORE 1.6.14 2017.04.04
+
+* Fixed platform definition for openocd
+* Added bootloader definitions for MKRFox1200
+* Added lowpower function on USB subsystem
+
+SAMD CORE 1.6.13 2017.03.31
+
+* Added SDU (SD card Updater) library.
+* Fixed 8MHz clock being generated incorrectly. Thanks @keestux
+
+SAMD CORE 1.6.12 2017.02.07
+
+* Fixed type conflict of utoa function. Thanks @kbumsik
+* Fixed pinMode(pin, OUTPUT) not working after analogRead(pin)
+* Reenabled support for Tian
+* Fixed signature for Adafruit Circuit Playground Express board
+* Added CMSIS headers for SAML21 chip series. Thanks @aethaniel
+
+SAMD CORE 1.6.11 2016.12.23
+
+* Temporarily disabled support for Arduino Tian until an upload issue is fixed
+
+SAMD CORE 1.6.10 2016.12.23
+
+* Added .org boards
+* Fixed MKRZero `build.board` property
+* linker: .data section is now aligned to 16 bytes address
+* Added support for CRYSTALLESS configurations (thanks @ladyada)
+* Added Circuits Playground board
+* Added method to automatically retrieve sketch start via linker variable
+  (see https://github.com/arduino/ArduinoCore-samd/pull/185)
+* Fixed USBDevice.epBank1EnableTransferComplete method
+* Adapted bootloader source code to CMSIS 4.5
+
+SAMD CORE 1.6.9 2016.12.12
+
+* MKR1000: Enabled PWM on pin 11, it is shared with pin A4
+* SPI: Optimized SPI.transfer(...)
+* Added linker flags for the ARM Math library
+* Added new I2S library
+* Bootloader: Check sketch vectors before waiting for double tap
+* Upgraded CMSIS version to 4.5.0, and use new CMSIS-Atmel package
+* Added Arduino MKRZero board.
+
+SAMD CORE 1.6.8 2016.10.12
+
+* Fixed regression on analogWrite. Thanks @bose-mdellisanti!
+* Fixed regression on SerialUSB.available()
+* C++ global constructors (if any) are now run after hardware initalization.
+
+SAMD CORE 1.6.7 2016.09.28
+
+* Fixed Serial.flush() blocking before any writes. Thanks @hangmoh
+* Added snprintf_P to avr/pgmspace.h stub. Thanks @jantje
+* Another small fix to String iterators. Thanks @Ivan-Perez @Chris--A
+* Fixes SerialUSB.write(...) returning 0 instead of byte written
+* Added Uart::availableForWrite()
+* Added defines for RAMSTART, RAMSIZE, RAMEND
+* Fixed writing LOW to a digital input pin blocking subsequent digitalRead attempts
+* Fixed digitalWrite() unnecessarily activating the pull-up resistor
+* Wire: Slave writes now use TX buffer
+* Added getTimeout() method to Stream.
+* Fixed glitch in PWM generation that may happen when calling analogWrite()
+* PWM frequency is now 732.4Hz (before it was 187500.0Hz)
+* Fixed PWM/analogwrite() not working on pin 13 on the Zero
+* Improved reliability of SerialUSB under heavy load (this should solve
+  all issues with MKR1000/WiFi101 firmware updater on MacOSX)
+* Improved SerialUSB.read() performance
+* Added String::toDouble()
+* Bootloader: LED now pulses and USB TX/RX blink on transfer (like Leonardo)
+* Bootloader: enabled USB string descriptors
+
+SAMD CORE 1.6.6 2016.05.19
+
+* Fixed digitalPinToInterrupt() macro, now it works as documented.
+* Added analogInputToDigitalPin macro
+* Fixed NUM_DIGITAL_PINS for Zero Board.
+* On-board RX-TX LEDs now blinks when there is activity on the native USB port
+* Fixed platform.txt, the core now compiles again with Arduino IDE <=1.6.5. Thanks @per1234
+* Fixed Wire.write(0x00) "ambiguos method" error
+* String class now supports iterators. Thanks @Chris--A
+* Remove enabling bootloader protection when burning bootloader. This enables WDT, so sketches do not work.
+* Added remote upload for Yun-Shield
+
+SAMD CORE 1.6.5 2016.04.02
+
+* Added Arduino/Genuino MKR1000 board
+* Set NVMCTRL.MANW bit to 1 (default is 0). This prevents accidental writes on program memory.
+* Bootloader: Fixed wrong UART speed (regression)
+* Fixed incorrect return value from Wire.available() when the receive buffer is not fully read.
+* Added DAC0 definition in Arduino/Genuino Zero variant file.
+* Enabled bootloader protection after "Burn bootloader".
+
+SAMD CORE 1.6.4 2016.02.19
+
+* Fixed Wire address setup when running as slave.
+* Fixed String constructor when using floating point numbers.
+* USBHost: fixed blocking USBHost.Task(). Thanks @bbx10
+* USBHost: fixed some ASCII Control codes in keyboard controller. Thanks @bbx10
+* USBHost: ported some minor fix from upstream UHS2. Thanks @bbx10
+* USBHost: fixed wrong library initialization. Thanks @bbx10 @ladyada
+* better interrupt handling in Serial::accept()
+
+SAMD CORE 1.6.3 2016.02.15
+
+* Added drivers for Arduino/Genuino MKR1000 board
+* Fixed Wire master repeated start behaviour
+* Added SerialUSB methods: readBreak(), baud(), stopbits(), paritytype(), numbits(), dtr(), rts()
+* Added SPI.transfer16(..) method
+* Bugfix: added missing Serial.begin(baud, config) method. Thanks @tuxedo0801
+* Fixed Serial baudrate calculations for 1200bps. Thanks @TomKeddie
+* Fixed Serial.flush() that now waits until the last bit has been sent. Thanks @TomKeddie
+* Fixed Serial configuration for data-bit. Thanks @TomKeddie
+* Bootloader: 32Khz external oscillator is now used, improves USB clock. Thanks @aethaniel
+* Bootloader: Clean up of makefiles and file organization. Thanks @aethaniel
+* Added PWM capability to pins A1/A2 of Arduino Zero.
+* variant.h/cpp: PWM capability is now determined by PIN_ATTR_PWM combined with
+                 PIN_ATTR_TIMER or PIN_ATTR_TIMER_ALT for timer selection.
+* Small fix to USBHost example "USB_desc.ino". Thanks @bbx10
+* USBHost: USB-Keyboard right shift key was ignored. Thanks @bbx10 
+* Wire library now support multiple instances in variant. Thanks @spiderkeys
+* Ported some SerialUSB API (readBreak(), baud(), stopbits(), paritytype(), numbits(), dtr(), rts())
+
+SAMD CORE 1.6.2 2015.11.03
+
+* Fixed bug in delay calculations
+* Fixed deadlock conditions in Wire. Thanks Erin Tomson
+* Print not aborting on write() failure. Thanks @stickbreaker
+* SPI can now be configured in variants. Thanks @aethaniel
+* Implemented Wire.end
+* Fixed external interrupt for pin 8 and 9
+* Implemented Wire.setClock. Thanks @PaoloP74
+* Wire: allow scanning bus via beginTransmission-endTransmission
+* USB Device: big refactoring and bug fix
+* USB Device: added PluggableUSB interface
+* updated bossac to version 1.6.1-arduino
+
+SAMD CORE 1.6.1 2015.07.21
+
+* Added missing ATN pin definition
+* Added missing bootloader key/value pair in boards.txt (this allows to burn bootloader with Sam-ICE too)
+* Fixed min/max functions
+* Fixed hooks for Cortex-M RTOS
+* Fixed acknowledge of UART errors
+* Enabled C11/C++11
+* Fixed initialization in USB Device
+* Updated bossac to version 1.6-arduino
+
+SAMD CORE 1.6.0  2015.06.15
+
+* First public release.
+

avdweb_nl_samd/README.md

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+# Arduino Core for SAMD21 CPU
+
+This repository contains the source code and configuration files of the Arduino Core
+for Atmel's SAMD21 processor (used on the Arduino/Genuino Zero, MKR1000 and MKRZero boards).
+
+## Installation on Arduino IDE
+
+This core is available as a package in the Arduino IDE cores manager.
+Just open the "Boards Manager" and install the package called:
+
+"Arduino SAMD Boards (32-bit ARM Cortex-M0+)"
+
+## Support
+
+There is a dedicated section of the Arduino Forum for general discussion and project assistance:
+
+http://forum.arduino.cc/index.php?board=98.0
+
+## Bugs or Issues
+
+If you find a bug you can submit an issue here on github:
+
+https://github.com/arduino/ArduinoCore-samd/issues
+
+Before posting a new issue, please check if the same problem has been already reported by someone else
+to avoid duplicates.
+
+## Contributions
+
+Contributions are always welcome. The preferred way to receive code cotribution is by submitting a 
+Pull Request on github.
+
+## Hourly builds
+
+This repository is under a Continuous Integration system that every hour checks if there are updates and
+builds a release for testing (the so called "Hourly builds").
+
+The hourly builds are available through Boards Manager. If you want to install them:
+  1. Open the **Preferences** of the Arduino IDE.
+  2. Add this URL `http://downloads.arduino.cc/Hourly/samd/package_samd-hourly-build_index.json` in the **Additional Boards Manager URLs** field, and click OK.
+  3. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
+  4. Install **Arduino SAMD core - Hourly build**
+  5. Select one of the boards under **SAMD Hourly build XX** in Tools->Board menu
+  6. Compile/Upload as usual
+
+If you already installed an hourly build and you want to update it with the latest:
+  1. Open the **Boards Manager** (menu Tools->Board->Board Manager...)
+  2. Remove **Arduino SAMD core - Hourly build**
+  3. Install again **Arduino SAMD core - Hourly build**, the Board Manager will download the latest build replacing the old one.
+
+## License and credits
+
+This core has been developed by Arduino LLC in collaboration with Atmel.
+
+```
+  Copyright (c) 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
+```

avdweb_nl_samd/VARIANT_COMPLIANCE_CHANGELOG

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+SAMD CORE 1.6.10
+
+* The linker script must define `__text_start__` symbol at the beginning of .text section.
+  This symbol is used to automatically determine the bootloader size.
+
+SAMD CORE 1.6.6
+
+* `digitalPinToInterrupt` #define moved to Arduino.h, variant.h must no longer define it.
+
+SAMD CORE 1.6.3
+
+* Timer for pin PWM selected based on value of `PIN_ATTR_TIMER_ALT` or `PIN_ATTR_TIMER`.
+  Prior to this "pin type" (ulPinType) was used.

avdweb_nl_samd/boards.txt

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+# Copyright (c) 2014-2017 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
+
+menu.crystalsel=Crystal Selection
+
+# SAM 15x15 (only native USB port)
+# --------------------------------------
+sam15x15.name=SAMD21
+sam15x15.vid.0=0x2341
+sam15x15.pid.0=0x804d
+sam15x15.vid.1=0x2341
+sam15x15.pid.1=0x004d
+sam15x15.vid.2=0x2341
+sam15x15.pid.2=0x824d
+sam15x15.vid.3=0x2341
+sam15x15.pid.3=0x024d
+
+sam15x15.upload.tool=bossac
+sam15x15.upload.protocol=sam-ba
+sam15x15.upload.maximum_size=262144
+sam15x15.upload.use_1200bps_touch=true
+sam15x15.upload.wait_for_upload_port=true
+sam15x15.upload.native_usb=true
+sam15x15.build.mcu=cortex-m0plus
+sam15x15.build.f_cpu=48000000L
+sam15x15.build.usb_product="Arduino Zero"
+sam15x15.build.usb_manufacturer="Arduino LLC"
+sam15x15.build.board=SAMD_ZERO
+sam15x15.build.core=arduino
+sam15x15.menu.crystalsel.withcrystal=With 32KHz Clock Crystal
+sam15x15.menu.crystalsel.withoutcrystal=Without Crystal
+sam15x15.menu.crystalsel.withoutcrystal.build.extra_flags=-DCRYSTALLESS -D__SAMD21G18A__ {build.usb_flags}
+sam15x15.menu.crystalsel.withcrystal.build.extra_flags=-D__SAMD21G18A__ {build.usb_flags}
+sam15x15.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
+sam15x15.build.openocdscript=openocd_scripts/arduino_zero.cfg
+sam15x15.build.variant=sam15x15_d21
+sam15x15.build.variant_system_lib=
+sam15x15.build.vid=0x2341
+sam15x15.build.pid=0x804d
+sam15x15.bootloader.tool=openocd
+sam15x15.bootloader.file=zero/samd21_sam_ba.bin

avdweb_nl_samd/bootloaders/mkr1000/README.md

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+
+The source code of the bootloader is in the folder:
+
+  bootloader/zero/
+
+