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circuitpython/ports/atmel-samd
Dan Halbert 065e82015f merge from 2.2.0 + fix up board defs 5 years ago
..
asf4@0efc3407dd Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
asf4_conf samd51 peripheral clocks were defined as 12MHz, but were really 120MHz 5 years ago
boards merge from 2.2.0 + fix up board defs 5 years ago
common-hal merge from 2.2.0 + fix up board defs 5 years ago
freetouch Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
modules Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
supervisor Implement busio.I2c. 5 years ago
tools Implement busio.I2c. 5 years ago
.gitattributes Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
.gitignore Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
Makefile merge from 2.2.0 + fix up board defs 5 years ago
README.rst ports/atmel-samd: feather_m0_adalogger readme updates (#460) 5 years ago
background.c Read serial input as a background task so we can check for the interrupt character. 5 years ago
background.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
fatfs_port.c Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
flash_api.c atmel-samd: More USB polish 5 years ago
flash_api.h atmel-samd: More USB polish 5 years ago
internal_flash.c Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
internal_flash.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
mpconfigport.h Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
mpconfigport.mk atmel-samd: Enable longints for M4 builds. 5 years ago
mphalport.c Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
mphalport.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
peripherals.c Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
peripherals.h Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
pins.h Implement busio.I2c. 5 years ago
qstrdefsport.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
reset.c merge from 2.2.0 + fix up board defs 5 years ago
reset.h merge from 2.2.0 + fix up board defs 5 years ago
samd21_peripherals.c Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
samd21_peripherals.h Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
samd21_pins.c Implement busio.I2c. 5 years ago
samd21_pins.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
samd51_peripherals.c Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
samd51_peripherals.h Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
samd51_pins.c Implement busio.I2c. 5 years ago
samd51_pins.h Implement busio.I2c. 5 years ago
samd_peripherals.h Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
shared_dma.c merge from 2.2.0 + fix up board defs 5 years ago
shared_dma.h merge from 2.2.0 + fix up board defs 5 years ago
spi_flash.c Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
spi_flash.h Merge commit 'f869d6b2e339c04469c6c9ea3fb2fabd7bbb2d8c' into nrf2_merge 5 years ago
tick.c atmel-samd: Add samd21 neopixel support. 5 years ago
tick.h atmel-samd: Add samd21 neopixel support. 5 years ago
usb.c atmel-samd: Fix non-DEBUG USB cdc. 5 years ago
usb.h Implement busio.I2c. 5 years ago
usb_mass_storage.c Support SPI flash chips for CIRCUITPY, using non-DMA SPI for now. 5 years ago
usb_mass_storage.h atmel-samd: More USB polish 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`` ``D8`` / ``GREEN_LED`` ``NEOPIXEL`` ``D8`` ``D4`` / ``TX``
PA07 ``D9`` ``A3`` ``D9`` ``D9`` ``D9`` ``D9`` ``D3`` / ``RX``
PA08 ``D4`` ``MICROPHONE_DO`` ``D4`` / ``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`` / ``RED_LED`` ``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`` / ``SD_CD`` ``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**
===================== ======== ========= ========= ======= ======= ======= ========= ========= ======= ========== ========== ========= ========= ========= ============ ======= ======= =========

Setup
-----
Install required compiler packages:

.. code-block:: shell

sudo add-apt-repository ppa:team-gcc-arm-embedded/ppa
sudo apt-get install gcc-arm-embedded

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__