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circuitpython/atmel-samd
Dan Halbert ef61b5ecb5 Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
..
asf atmel-samd: Introduce audiobusio.PDMIn for recording audio from PDM 5 years ago
asf_conf atmel-samd: Use DMA for SPI flash block transfers. 6 years ago
bindings/samd atmel-samd: Fixup autoreset after switching boot to running once. 6 years ago
boards Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
common-hal Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
freetouch@1f21fde3fe atmel-samd: Swap out pulseio for touchio based on FreeTouch. 6 years ago
modules atmel-samd: Move neopixel out of internal flash. 6 years ago
tools atmel-samd: Update README and add pinout tables that map MCU names 5 years ago
.gitattributes Include the precompiled math library from ASF. 6 years ago
.gitignore Blinking the LED works. Clocks should be set up correctly. 6 years ago
Makefile Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
README.rst atmel-samd: Update README and add pinout tables that map MCU names 5 years ago
access_vfs.c atmel-samd: Fix crash when fs mount fails and fix mounting internal flash. It was broken by the update to 1.9.1. Related to #82 5 years ago
access_vfs.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
autoreload.c atmel-samd: Fixup autoreset after switching boot to running once. 6 years ago
autoreload.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
background.c atmel-samd: Support wav file playback. Tested up to 16bit 22.1khz. Must be mono file! 6 years ago
background.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
fatfs_port.c Merge tag 'v1.9.1' 6 years ago
flash_api.c Merge tag 'v1.9.1' 6 years ago
flash_api.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
internal_flash.c atmel-samd: Introduce a nvm module for non-volatile byte-level memory access. (#203) 5 years ago
internal_flash.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
main.c atmel-samd: Introduce a nvm module for non-volatile byte-level memory access. (#203) 5 years ago
mpconfigport.h atmel-samd: Introduce a nvm module for non-volatile byte-level memory access. (#203) 5 years ago
mpconfigport.mk Fix problems that prevented use of internal frozen modules: 5 years ago
mphalport.c atmel-samd: Reboot to bootloader when a 1200 baud serial connection is 5 years ago
mphalport.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
qstrdefsport.h Compiled and linked SAMD21x18 version successfully. 6 years ago
reset.c atmel-samd: Reboot to bootloader when a 1200 baud serial connection is 5 years ago
reset.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
rgb_led_colors.h atmel-samd: Add a safe mode which detects hard faults and reboots without running user code again. 6 years ago
rgb_led_status.c atmel-samd: Rework status LED implementation 6 years ago
rgb_led_status.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
samd21_pins.c Fix ADC input def for PB07. (#195) 5 years ago
samd21_pins.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
shared_dma.c atmel-samd: Clear the error bit after the known buffer overflow and be explicit about dst increase. 5 years ago
shared_dma.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
spi_flash.c atmel-samd: Add support for a second flash chip so either may be used. 5 years ago
spi_flash.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago
tick.c atmel-samd: Rename auto-reset to auto-reload to reduce confusion with physical reset buttons. 6 years ago
tick.h Initial merge of micropython v1.9.2 into circuitpython 2.0.0 (in development) master. 5 years ago

README.rst

SAMD21x18
=========

This port brings MicroPython to SAMD21x18 based development boards under the name
CircuitPython. Supported boards include the Adafruit CircuitPlayground Express,
Adafruit Feather M0 Express, Adafruit Metro M0 Express, Arduino Zero, Adafruit
Feather M0 Basic and Adafruit M0 Bluefruit LE.

Pinout
------

All of the boards share the same core pin functionality but call pins by
different names. The table below matches the pin order in
`the datasheet <http://ww1.microchip.com/downloads/en/DeviceDoc/40001882A.pdf>`_
and omits the pins only available on the largest package because all supported
boards use smaller version.

===================== =============== =========================== ==================== ================ ================== ========================= ================ ================
`microcontroller.pin` `board`
--------------------- -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Datasheet arduino_zero circuitplayground_express feather_m0_adalogger feather_m0_basic feather_m0_express gemma_m0 metro_m0_express trinket_m0
===================== =============== =========================== ==================== ================ ================== ========================= ================ ================
PA00 ``ACCELEROMETER_SDA`` ``APA102_MOSI`` ``APA102_MOSI``
PA01 ``ACCELEROMETER_SCL`` ``APA102_SCK`` ``APA102_SCK``
PA02 ``A0`` ``A0`` / ``SPEAKER`` ``A0`` ``A0`` ``A0`` ``A0`` / ``D1`` ``A0`` ``D1`` / ``A0``
PA03
PB08 ``A1`` ``A7`` / ``TX`` ``A1`` ``A1`` ``A1`` ``A1``
PB09 ``A2`` ``A6`` / ``RX`` ``A2`` ``A2`` ``A2`` ``A2``
PA04 ``A3`` ``IR_PROXIMITY`` ``A3`` ``A3`` ``A3`` ``D0`` / ``TX`` / ``SDA`` ``A3``
PA05 ``A4`` ``A1`` ``A4`` ``A4`` ``A4`` ``D2`` / ``RX`` / ``SCL`` ``A4``
PA06 ``D8`` ``A2`` ``NEOPIXEL`` ``D8`` ``D4`` / ``TX``
PA07 ``D9`` ``A3`` ``D9`` ``D9`` ``D9`` ``D9`` ``D3`` / ``RX``
PA08 ``D4`` ``MICROPHONE_DO`` ``SD_CS`` ``D4`` ``D0`` / ``SDA``
PA09 ``D3`` ``TEMPERATURE`` / ``A9`` ``D3`` ``D2`` / ``SCL``
PA10 ``D1`` / ``TX`` ``MICROPHONE_SCK`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D1`` / ``TX`` ``D13``
PA11 ``D0`` / ``RX`` ``LIGHT`` / ``A8`` ``D0`` / ``RX`` ``D0`` / ``RX`` ``D0`` / ``RX`` ``D0`` / ``RX``
PB10 ``MOSI`` ``MOSI`` ``MOSI`` ``MOSI`` ``MOSI``
PB11 ``SCK`` ``SCK`` ``SCK`` ``SCK`` ``SCK``
PA12 ``MISO`` ``REMOTEIN`` / ``IR_RX`` ``MISO`` ``MISO`` ``MISO`` ``MISO``
PA13 ``ACCELEROMETER_INTERRUPT`` ``FLASH_CS``
PA14 ``D2`` ``BUTTON_B`` / ``D5`` ``D2``
PA15 ``D5`` ``SLIDE_SWITCH`` / ``D7`` ``D5`` ``D5`` ``D5`` ``D5``
PA16 ``D11`` ``MISO`` ``D11`` ``D11`` ``D11`` ``D11``
PA17 ``D13`` ``D13`` ``D13`` ``D13`` ``D13`` ``D13``
PA18 ``D10`` ``D10`` ``D10`` ``D10`` ``D10``
PA19 ``D12`` ``D12`` ``D12`` ``D12`` ``D12``
PA20 ``D6`` ``MOSI`` ``D6`` ``D6`` ``D6`` ``D6``
PA21 ``D7`` ``SCK`` ``D7``
PA22 ``SDA`` ``SDA`` ``SDA`` ``SDA`` ``SDA``
PA23 ``SCL`` ``REMOTEOUT`` / ``IR_TX`` ``SCL`` ``SCL`` ``SCL`` ``L`` / ``D13`` ``SCL``
PA24
PA25
PB22 ``FLASH_CS``
PB23 ``NEOPIXEL`` / ``D8``
PA27
PA28 ``BUTTON_A`` / ``D4``
PA29
PA30 ``SPEAKER_ENABLE`` ``NEOPIXEL``
PA31
PB02 ``A5`` ``A5`` / ``SDA`` ``A5`` ``A5`` ``A5`` ``A5``
PB03 ``A4`` / ``SCL``
===================== =============== =========================== ==================== ================ ================== ========================= ================ ================

Here is a table about which pins can do what in CircuitPython terms. However,
just because something is listed, doesn't mean it will always work. Existing use
of other pins and functionality will impact your ability to use a pin for your
desired purpose. For example, only certain combinations of SPI pins will work
because they use shared hardware internally.

===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========
`microcontroller.pin` `analogio` `audioio` `bitbangio` `busio` `digitalio` `pulseio` `touchio`
--------------------- ------------------- --------- ------------------------- -------------------------------------------------------------------------------------- ------------ ---------------- ---------
Datasheet AnalogIn AnalogOut AudioOut I2C OneWire SPI I2C - SDA I2C - SCL OneWire SPI - MISO SPI - MOSI SPI - SCK UART - RX UART - TX DigitalInOut PulseIn PWMOut TouchIn
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========
PA00 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA01 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA02 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA03 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB08 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB09 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA04 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA05 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA06 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA07 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA08 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA09 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA10 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA11 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB10 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB11 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA12 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA13 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA14 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA15 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA16 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA17 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA18 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA19 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA20 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA21 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA22 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA23 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA24
PA25
PB22 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB23 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA27 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA28 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA29 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA30 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PA31 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB02 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
PB03 **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes** **Yes**
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========

Building
--------

To build for the Arduino Zero:

.. code-block:: shell

make

To build for other boards you must change it by setting ``BOARD``. For example:

.. code-block:: shell

make BOARD=feather_m0_basic

Board names are the directory names in the `boards <https://github.com/adafruit/circuitpython/tree/master/atmel-samd/boards>`_ folder.

Deploying
---------

Arduino Bootloader
^^^^^^^^^^^^^^^^^^

If your board has an existing Arduino bootloader on it then you can use bossac
to flash MicroPython. First, activate the bootloader. On Adafruit Feathers you
can double click the reset button and the #13 will fade in and out. Finally,
run bossac:

tools/bossac_osx -e -w -v -b -R build-feather_m0_basic/firmware.bin

No Bootloader via GDB
^^^^^^^^^^^^^^^^^^^^^

This method works for loading MicroPython onto the Arduino Zero via the
programming port rather than the native USB port.

Note: These instructions are tested on Mac OSX and will vary for different
platforms.

openocd -f ~/Library/Arduino15/packages/arduino/hardware/samd/1.6.6/variants/arduino_zero/openocd_scripts/arduino_zero.cfg

In another terminal from ``micropython/atmel-samd``:

arm-none-eabi-gdb build-arduino_zero/firmware.elf
(gdb) tar ext :3333
...
(gdb) load
...
(gdb) monitor reset init
...
(gdb) continue

Connecting
----------

Serial
^^^^^^

All boards are currently configured to work over USB rather than UART. To
connect to it from OSX do something like this:

screen /dev/tty.usbmodem142422 115200

You may not see a prompt immediately because it doesn't know you connected. To
get one either hit enter to get `>>>` or do CTRL-B to get the full header.

Mass storage
^^^^^^^^^^^^

All boards will also show up as a mass storage device. Make sure to eject it
before resetting or disconnecting the board.

Port Specific modules
---------------------

.. toctree::
bindings/samd/__init__